1222 lines
54 KiB
LLVM
1222 lines
54 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -S -loop-vectorize -force-vector-width=2 < %s | FileCheck %s
|
|
; RUN: opt -S -loop-vectorize -force-vector-width=2 -prefer-predicate-over-epilogue=predicate-dont-vectorize < %s | FileCheck --check-prefix TAILFOLD %s
|
|
|
|
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
|
|
|
|
define void @bottom_tested(i16* %p, i32 %n) {
|
|
; CHECK-LABEL: @bottom_tested(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = icmp sgt i32 [[N:%.*]], 0
|
|
; CHECK-NEXT: [[SMAX:%.*]] = select i1 [[TMP0]], i32 [[N]], i32 0
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add nuw i32 [[SMAX]], 1
|
|
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[TMP1]], 2
|
|
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
|
; CHECK: vector.ph:
|
|
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[TMP1]], 2
|
|
; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[TMP1]], [[N_MOD_VF]]
|
|
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
|
|
; CHECK: vector.body:
|
|
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[INDEX]], 0
|
|
; CHECK-NEXT: [[TMP3:%.*]] = sext i32 [[TMP2]] to i64
|
|
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[TMP3]]
|
|
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i16, i16* [[TMP4]], i32 0
|
|
; CHECK-NEXT: [[TMP6:%.*]] = bitcast i16* [[TMP5]] to <2 x i16>*
|
|
; CHECK-NEXT: store <2 x i16> zeroinitializer, <2 x i16>* [[TMP6]], align 4
|
|
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 2
|
|
; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
|
|
; CHECK-NEXT: br i1 [[TMP7]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP0:!llvm.loop !.*]]
|
|
; CHECK: middle.block:
|
|
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP1]], [[N_VEC]]
|
|
; CHECK-NEXT: br i1 [[CMP_N]], label [[IF_END:%.*]], label [[SCALAR_PH]]
|
|
; CHECK: scalar.ph:
|
|
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_COND]] ]
|
|
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]]
|
|
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
|
|
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_COND]], label [[IF_END]], [[LOOP2:!llvm.loop !.*]]
|
|
; CHECK: if.end:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
; TAILFOLD-LABEL: @bottom_tested(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: [[TMP0:%.*]] = icmp sgt i32 [[N:%.*]], 0
|
|
; TAILFOLD-NEXT: [[SMAX:%.*]] = select i1 [[TMP0]], i32 [[N]], i32 0
|
|
; TAILFOLD-NEXT: [[TMP1:%.*]] = add nuw i32 [[SMAX]], 1
|
|
; TAILFOLD-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
|
; TAILFOLD: vector.ph:
|
|
; TAILFOLD-NEXT: [[N_RND_UP:%.*]] = add i32 [[TMP1]], 1
|
|
; TAILFOLD-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[N_RND_UP]], 2
|
|
; TAILFOLD-NEXT: [[N_VEC:%.*]] = sub i32 [[N_RND_UP]], [[N_MOD_VF]]
|
|
; TAILFOLD-NEXT: [[TRIP_COUNT_MINUS_1:%.*]] = sub i32 [[TMP1]], 1
|
|
; TAILFOLD-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i32> poison, i32 [[TRIP_COUNT_MINUS_1]], i32 0
|
|
; TAILFOLD-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i32> [[BROADCAST_SPLATINSERT]], <2 x i32> poison, <2 x i32> zeroinitializer
|
|
; TAILFOLD-NEXT: br label [[VECTOR_BODY:%.*]]
|
|
; TAILFOLD: vector.body:
|
|
; TAILFOLD-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_STORE_CONTINUE2:%.*]] ]
|
|
; TAILFOLD-NEXT: [[VEC_IND:%.*]] = phi <2 x i32> [ <i32 0, i32 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[PRED_STORE_CONTINUE2]] ]
|
|
; TAILFOLD-NEXT: [[TMP2:%.*]] = add i32 [[INDEX]], 0
|
|
; TAILFOLD-NEXT: [[TMP3:%.*]] = add i32 [[INDEX]], 1
|
|
; TAILFOLD-NEXT: [[TMP4:%.*]] = icmp ule <2 x i32> [[VEC_IND]], [[BROADCAST_SPLAT]]
|
|
; TAILFOLD-NEXT: [[TMP5:%.*]] = sext <2 x i32> [[VEC_IND]] to <2 x i64>
|
|
; TAILFOLD-NEXT: [[TMP6:%.*]] = extractelement <2 x i1> [[TMP4]], i32 0
|
|
; TAILFOLD-NEXT: br i1 [[TMP6]], label [[PRED_STORE_IF:%.*]], label [[PRED_STORE_CONTINUE:%.*]]
|
|
; TAILFOLD: pred.store.if:
|
|
; TAILFOLD-NEXT: [[TMP7:%.*]] = extractelement <2 x i64> [[TMP5]], i32 0
|
|
; TAILFOLD-NEXT: [[TMP8:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[TMP7]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[TMP8]], align 4
|
|
; TAILFOLD-NEXT: br label [[PRED_STORE_CONTINUE]]
|
|
; TAILFOLD: pred.store.continue:
|
|
; TAILFOLD-NEXT: [[TMP9:%.*]] = extractelement <2 x i1> [[TMP4]], i32 1
|
|
; TAILFOLD-NEXT: br i1 [[TMP9]], label [[PRED_STORE_IF1:%.*]], label [[PRED_STORE_CONTINUE2]]
|
|
; TAILFOLD: pred.store.if1:
|
|
; TAILFOLD-NEXT: [[TMP10:%.*]] = extractelement <2 x i64> [[TMP5]], i32 1
|
|
; TAILFOLD-NEXT: [[TMP11:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[TMP10]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[TMP11]], align 4
|
|
; TAILFOLD-NEXT: br label [[PRED_STORE_CONTINUE2]]
|
|
; TAILFOLD: pred.store.continue2:
|
|
; TAILFOLD-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 2
|
|
; TAILFOLD-NEXT: [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], <i32 2, i32 2>
|
|
; TAILFOLD-NEXT: [[TMP12:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
|
|
; TAILFOLD-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP0:!llvm.loop !.*]]
|
|
; TAILFOLD: middle.block:
|
|
; TAILFOLD-NEXT: br i1 true, label [[IF_END:%.*]], label [[SCALAR_PH]]
|
|
; TAILFOLD: scalar.ph:
|
|
; TAILFOLD-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; TAILFOLD-NEXT: br label [[FOR_COND:%.*]]
|
|
; TAILFOLD: for.cond:
|
|
; TAILFOLD-NEXT: [[I:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_COND]] ]
|
|
; TAILFOLD-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; TAILFOLD-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
|
|
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; TAILFOLD-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
|
|
; TAILFOLD-NEXT: br i1 [[CMP]], label [[FOR_COND]], label [[IF_END]], [[LOOP2:!llvm.loop !.*]]
|
|
; TAILFOLD: if.end:
|
|
; TAILFOLD-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%i = phi i32 [ 0, %entry ], [ %inc, %for.cond ]
|
|
%iprom = sext i32 %i to i64
|
|
%b = getelementptr inbounds i16, i16* %p, i64 %iprom
|
|
store i16 0, i16* %b, align 4
|
|
%inc = add nsw i32 %i, 1
|
|
%cmp = icmp slt i32 %i, %n
|
|
br i1 %cmp, label %for.cond, label %if.end
|
|
|
|
if.end:
|
|
ret void
|
|
}
|
|
|
|
define void @early_exit(i16* %p, i32 %n) {
|
|
; CHECK-LABEL: @early_exit(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = icmp sgt i32 [[N:%.*]], 0
|
|
; CHECK-NEXT: [[SMAX:%.*]] = select i1 [[TMP0]], i32 [[N]], i32 0
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add nuw i32 [[SMAX]], 1
|
|
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ule i32 [[TMP1]], 2
|
|
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
|
; CHECK: vector.ph:
|
|
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[TMP1]], 2
|
|
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[N_MOD_VF]], 0
|
|
; CHECK-NEXT: [[TMP3:%.*]] = select i1 [[TMP2]], i32 2, i32 [[N_MOD_VF]]
|
|
; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[TMP1]], [[TMP3]]
|
|
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
|
|
; CHECK: vector.body:
|
|
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i32> [ <i32 0, i32 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[TMP4:%.*]] = add i32 [[INDEX]], 0
|
|
; CHECK-NEXT: [[TMP5:%.*]] = add i32 [[INDEX]], 1
|
|
; CHECK-NEXT: [[TMP6:%.*]] = sext i32 [[TMP4]] to i64
|
|
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[TMP6]]
|
|
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i16, i16* [[TMP7]], i32 0
|
|
; CHECK-NEXT: [[TMP9:%.*]] = bitcast i16* [[TMP8]] to <2 x i16>*
|
|
; CHECK-NEXT: store <2 x i16> zeroinitializer, <2 x i16>* [[TMP9]], align 4
|
|
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 2
|
|
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], <i32 2, i32 2>
|
|
; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
|
|
; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP4:!llvm.loop !.*]]
|
|
; CHECK: middle.block:
|
|
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP1]], [[N_VEC]]
|
|
; CHECK-NEXT: br i1 [[CMP_N]], label [[IF_END:%.*]], label [[SCALAR_PH]]
|
|
; CHECK: scalar.ph:
|
|
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]]
|
|
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
|
|
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; CHECK-NEXT: br label [[FOR_COND]], [[LOOP5:!llvm.loop !.*]]
|
|
; CHECK: if.end:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
; TAILFOLD-LABEL: @early_exit(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[FOR_COND:%.*]]
|
|
; TAILFOLD: for.cond:
|
|
; TAILFOLD-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; TAILFOLD-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N:%.*]]
|
|
; TAILFOLD-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
|
|
; TAILFOLD: for.body:
|
|
; TAILFOLD-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; TAILFOLD-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
|
|
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; TAILFOLD-NEXT: br label [[FOR_COND]]
|
|
; TAILFOLD: if.end:
|
|
; TAILFOLD-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%i = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i, %n
|
|
br i1 %cmp, label %for.body, label %if.end
|
|
|
|
for.body:
|
|
%iprom = sext i32 %i to i64
|
|
%b = getelementptr inbounds i16, i16* %p, i64 %iprom
|
|
store i16 0, i16* %b, align 4
|
|
%inc = add nsw i32 %i, 1
|
|
br label %for.cond
|
|
|
|
if.end:
|
|
ret void
|
|
}
|
|
|
|
; Same as early_exit, but with optsize to prevent the use of
|
|
; a scalar epilogue. -- Can't vectorize this in either case.
|
|
define void @optsize(i16* %p, i32 %n) optsize {
|
|
; CHECK-LABEL: @optsize(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N:%.*]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
|
|
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; CHECK-NEXT: br label [[FOR_COND]]
|
|
; CHECK: if.end:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
; TAILFOLD-LABEL: @optsize(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[FOR_COND:%.*]]
|
|
; TAILFOLD: for.cond:
|
|
; TAILFOLD-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; TAILFOLD-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N:%.*]]
|
|
; TAILFOLD-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
|
|
; TAILFOLD: for.body:
|
|
; TAILFOLD-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; TAILFOLD-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
|
|
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; TAILFOLD-NEXT: br label [[FOR_COND]]
|
|
; TAILFOLD: if.end:
|
|
; TAILFOLD-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%i = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i, %n
|
|
br i1 %cmp, label %for.body, label %if.end
|
|
|
|
for.body:
|
|
%iprom = sext i32 %i to i64
|
|
%b = getelementptr inbounds i16, i16* %p, i64 %iprom
|
|
store i16 0, i16* %b, align 4
|
|
%inc = add nsw i32 %i, 1
|
|
br label %for.cond
|
|
|
|
if.end:
|
|
ret void
|
|
}
|
|
|
|
|
|
; multiple exit - no values inside the loop used outside
|
|
define void @multiple_unique_exit(i16* %p, i32 %n) {
|
|
; CHECK-LABEL: @multiple_unique_exit(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = icmp sgt i32 [[N:%.*]], 0
|
|
; CHECK-NEXT: [[SMAX:%.*]] = select i1 [[TMP0]], i32 [[N]], i32 0
|
|
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[SMAX]], 2096
|
|
; CHECK-NEXT: [[UMIN:%.*]] = select i1 [[TMP1]], i32 [[SMAX]], i32 2096
|
|
; CHECK-NEXT: [[TMP2:%.*]] = add nuw nsw i32 [[UMIN]], 1
|
|
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ule i32 [[TMP2]], 2
|
|
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
|
; CHECK: vector.ph:
|
|
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[TMP2]], 2
|
|
; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[N_MOD_VF]], 0
|
|
; CHECK-NEXT: [[TMP4:%.*]] = select i1 [[TMP3]], i32 2, i32 [[N_MOD_VF]]
|
|
; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[TMP2]], [[TMP4]]
|
|
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
|
|
; CHECK: vector.body:
|
|
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i32> [ <i32 0, i32 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[TMP5:%.*]] = add i32 [[INDEX]], 0
|
|
; CHECK-NEXT: [[TMP6:%.*]] = add i32 [[INDEX]], 1
|
|
; CHECK-NEXT: [[TMP7:%.*]] = sext i32 [[TMP5]] to i64
|
|
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[TMP7]]
|
|
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i16, i16* [[TMP8]], i32 0
|
|
; CHECK-NEXT: [[TMP10:%.*]] = bitcast i16* [[TMP9]] to <2 x i16>*
|
|
; CHECK-NEXT: store <2 x i16> zeroinitializer, <2 x i16>* [[TMP10]], align 4
|
|
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 2
|
|
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], <i32 2, i32 2>
|
|
; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
|
|
; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP6:!llvm.loop !.*]]
|
|
; CHECK: middle.block:
|
|
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP2]], [[N_VEC]]
|
|
; CHECK-NEXT: br i1 [[CMP_N]], label [[IF_END:%.*]], label [[SCALAR_PH]]
|
|
; CHECK: scalar.ph:
|
|
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]]
|
|
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
|
|
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
|
|
; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], [[LOOP7:!llvm.loop !.*]]
|
|
; CHECK: if.end:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
; TAILFOLD-LABEL: @multiple_unique_exit(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[FOR_COND:%.*]]
|
|
; TAILFOLD: for.cond:
|
|
; TAILFOLD-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; TAILFOLD-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N:%.*]]
|
|
; TAILFOLD-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
|
|
; TAILFOLD: for.body:
|
|
; TAILFOLD-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; TAILFOLD-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
|
|
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; TAILFOLD-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
|
|
; TAILFOLD-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]]
|
|
; TAILFOLD: if.end:
|
|
; TAILFOLD-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%i = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i, %n
|
|
br i1 %cmp, label %for.body, label %if.end
|
|
|
|
for.body:
|
|
%iprom = sext i32 %i to i64
|
|
%b = getelementptr inbounds i16, i16* %p, i64 %iprom
|
|
store i16 0, i16* %b, align 4
|
|
%inc = add nsw i32 %i, 1
|
|
%cmp2 = icmp slt i32 %i, 2096
|
|
br i1 %cmp2, label %for.cond, label %if.end
|
|
|
|
if.end:
|
|
ret void
|
|
}
|
|
|
|
; multiple exit - with an lcssa phi
|
|
define i32 @multiple_unique_exit2(i16* %p, i32 %n) {
|
|
; CHECK-LABEL: @multiple_unique_exit2(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = icmp sgt i32 [[N:%.*]], 0
|
|
; CHECK-NEXT: [[SMAX:%.*]] = select i1 [[TMP0]], i32 [[N]], i32 0
|
|
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[SMAX]], 2096
|
|
; CHECK-NEXT: [[UMIN:%.*]] = select i1 [[TMP1]], i32 [[SMAX]], i32 2096
|
|
; CHECK-NEXT: [[TMP2:%.*]] = add nuw nsw i32 [[UMIN]], 1
|
|
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ule i32 [[TMP2]], 2
|
|
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
|
; CHECK: vector.ph:
|
|
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[TMP2]], 2
|
|
; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[N_MOD_VF]], 0
|
|
; CHECK-NEXT: [[TMP4:%.*]] = select i1 [[TMP3]], i32 2, i32 [[N_MOD_VF]]
|
|
; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[TMP2]], [[TMP4]]
|
|
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
|
|
; CHECK: vector.body:
|
|
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i32> [ <i32 0, i32 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[TMP5:%.*]] = add i32 [[INDEX]], 0
|
|
; CHECK-NEXT: [[TMP6:%.*]] = add i32 [[INDEX]], 1
|
|
; CHECK-NEXT: [[TMP7:%.*]] = sext i32 [[TMP5]] to i64
|
|
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[TMP7]]
|
|
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i16, i16* [[TMP8]], i32 0
|
|
; CHECK-NEXT: [[TMP10:%.*]] = bitcast i16* [[TMP9]] to <2 x i16>*
|
|
; CHECK-NEXT: store <2 x i16> zeroinitializer, <2 x i16>* [[TMP10]], align 4
|
|
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 2
|
|
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], <i32 2, i32 2>
|
|
; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
|
|
; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP8:!llvm.loop !.*]]
|
|
; CHECK: middle.block:
|
|
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP2]], [[N_VEC]]
|
|
; CHECK-NEXT: [[IND_ESCAPE:%.*]] = sub i32 [[N_VEC]], 1
|
|
; CHECK-NEXT: [[IND_ESCAPE1:%.*]] = sub i32 [[N_VEC]], 1
|
|
; CHECK-NEXT: br i1 [[CMP_N]], label [[IF_END:%.*]], label [[SCALAR_PH]]
|
|
; CHECK: scalar.ph:
|
|
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]]
|
|
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
|
|
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
|
|
; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], [[LOOP9:!llvm.loop !.*]]
|
|
; CHECK: if.end:
|
|
; CHECK-NEXT: [[I_LCSSA:%.*]] = phi i32 [ [[I]], [[FOR_BODY]] ], [ [[I]], [[FOR_COND]] ], [ [[IND_ESCAPE1]], [[MIDDLE_BLOCK]] ]
|
|
; CHECK-NEXT: ret i32 [[I_LCSSA]]
|
|
;
|
|
; TAILFOLD-LABEL: @multiple_unique_exit2(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[FOR_COND:%.*]]
|
|
; TAILFOLD: for.cond:
|
|
; TAILFOLD-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; TAILFOLD-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N:%.*]]
|
|
; TAILFOLD-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
|
|
; TAILFOLD: for.body:
|
|
; TAILFOLD-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; TAILFOLD-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
|
|
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; TAILFOLD-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
|
|
; TAILFOLD-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]]
|
|
; TAILFOLD: if.end:
|
|
; TAILFOLD-NEXT: [[I_LCSSA:%.*]] = phi i32 [ [[I]], [[FOR_BODY]] ], [ [[I]], [[FOR_COND]] ]
|
|
; TAILFOLD-NEXT: ret i32 [[I_LCSSA]]
|
|
;
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%i = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i, %n
|
|
br i1 %cmp, label %for.body, label %if.end
|
|
|
|
for.body:
|
|
%iprom = sext i32 %i to i64
|
|
%b = getelementptr inbounds i16, i16* %p, i64 %iprom
|
|
store i16 0, i16* %b, align 4
|
|
%inc = add nsw i32 %i, 1
|
|
%cmp2 = icmp slt i32 %i, 2096
|
|
br i1 %cmp2, label %for.cond, label %if.end
|
|
|
|
if.end:
|
|
ret i32 %i
|
|
}
|
|
|
|
; multiple exit w/a non lcssa phi
|
|
define i32 @multiple_unique_exit3(i16* %p, i32 %n) {
|
|
; CHECK-LABEL: @multiple_unique_exit3(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = icmp sgt i32 [[N:%.*]], 0
|
|
; CHECK-NEXT: [[SMAX:%.*]] = select i1 [[TMP0]], i32 [[N]], i32 0
|
|
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[SMAX]], 2096
|
|
; CHECK-NEXT: [[UMIN:%.*]] = select i1 [[TMP1]], i32 [[SMAX]], i32 2096
|
|
; CHECK-NEXT: [[TMP2:%.*]] = add nuw nsw i32 [[UMIN]], 1
|
|
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ule i32 [[TMP2]], 2
|
|
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
|
; CHECK: vector.ph:
|
|
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[TMP2]], 2
|
|
; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[N_MOD_VF]], 0
|
|
; CHECK-NEXT: [[TMP4:%.*]] = select i1 [[TMP3]], i32 2, i32 [[N_MOD_VF]]
|
|
; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[TMP2]], [[TMP4]]
|
|
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
|
|
; CHECK: vector.body:
|
|
; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i32> [ <i32 0, i32 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[TMP5:%.*]] = add i32 [[INDEX]], 0
|
|
; CHECK-NEXT: [[TMP6:%.*]] = add i32 [[INDEX]], 1
|
|
; CHECK-NEXT: [[TMP7:%.*]] = sext i32 [[TMP5]] to i64
|
|
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[TMP7]]
|
|
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i16, i16* [[TMP8]], i32 0
|
|
; CHECK-NEXT: [[TMP10:%.*]] = bitcast i16* [[TMP9]] to <2 x i16>*
|
|
; CHECK-NEXT: store <2 x i16> zeroinitializer, <2 x i16>* [[TMP10]], align 4
|
|
; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 2
|
|
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], <i32 2, i32 2>
|
|
; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
|
|
; CHECK-NEXT: br i1 [[TMP11]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP10:!llvm.loop !.*]]
|
|
; CHECK: middle.block:
|
|
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[TMP2]], [[N_VEC]]
|
|
; CHECK-NEXT: br i1 [[CMP_N]], label [[IF_END:%.*]], label [[SCALAR_PH]]
|
|
; CHECK: scalar.ph:
|
|
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P]], i64 [[IPROM]]
|
|
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
|
|
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
|
|
; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]], [[LOOP11:!llvm.loop !.*]]
|
|
; CHECK: if.end:
|
|
; CHECK-NEXT: [[EXIT:%.*]] = phi i32 [ 0, [[FOR_COND]] ], [ 1, [[FOR_BODY]] ], [ 0, [[MIDDLE_BLOCK]] ]
|
|
; CHECK-NEXT: ret i32 [[EXIT]]
|
|
;
|
|
; TAILFOLD-LABEL: @multiple_unique_exit3(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[FOR_COND:%.*]]
|
|
; TAILFOLD: for.cond:
|
|
; TAILFOLD-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; TAILFOLD-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N:%.*]]
|
|
; TAILFOLD-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
|
|
; TAILFOLD: for.body:
|
|
; TAILFOLD-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; TAILFOLD-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
|
|
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; TAILFOLD-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
|
|
; TAILFOLD-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END]]
|
|
; TAILFOLD: if.end:
|
|
; TAILFOLD-NEXT: [[EXIT:%.*]] = phi i32 [ 0, [[FOR_COND]] ], [ 1, [[FOR_BODY]] ]
|
|
; TAILFOLD-NEXT: ret i32 [[EXIT]]
|
|
;
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%i = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i, %n
|
|
br i1 %cmp, label %for.body, label %if.end
|
|
|
|
for.body:
|
|
%iprom = sext i32 %i to i64
|
|
%b = getelementptr inbounds i16, i16* %p, i64 %iprom
|
|
store i16 0, i16* %b, align 4
|
|
%inc = add nsw i32 %i, 1
|
|
%cmp2 = icmp slt i32 %i, 2096
|
|
br i1 %cmp2, label %for.cond, label %if.end
|
|
|
|
if.end:
|
|
%exit = phi i32 [0, %for.cond], [1, %for.body]
|
|
ret i32 %exit
|
|
}
|
|
|
|
; multiple exits w/distinct target blocks
|
|
define i32 @multiple_exit_blocks(i16* %p, i32 %n) {
|
|
; CHECK-LABEL: @multiple_exit_blocks(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N:%.*]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
|
|
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
|
|
; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END2:%.*]]
|
|
; CHECK: if.end:
|
|
; CHECK-NEXT: ret i32 0
|
|
; CHECK: if.end2:
|
|
; CHECK-NEXT: ret i32 1
|
|
;
|
|
; TAILFOLD-LABEL: @multiple_exit_blocks(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[FOR_COND:%.*]]
|
|
; TAILFOLD: for.cond:
|
|
; TAILFOLD-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; TAILFOLD-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N:%.*]]
|
|
; TAILFOLD-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
|
|
; TAILFOLD: for.body:
|
|
; TAILFOLD-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; TAILFOLD-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
|
|
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; TAILFOLD-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
|
|
; TAILFOLD-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END2:%.*]]
|
|
; TAILFOLD: if.end:
|
|
; TAILFOLD-NEXT: ret i32 0
|
|
; TAILFOLD: if.end2:
|
|
; TAILFOLD-NEXT: ret i32 1
|
|
;
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%i = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i, %n
|
|
br i1 %cmp, label %for.body, label %if.end
|
|
|
|
for.body:
|
|
%iprom = sext i32 %i to i64
|
|
%b = getelementptr inbounds i16, i16* %p, i64 %iprom
|
|
store i16 0, i16* %b, align 4
|
|
%inc = add nsw i32 %i, 1
|
|
%cmp2 = icmp slt i32 %i, 2096
|
|
br i1 %cmp2, label %for.cond, label %if.end2
|
|
|
|
if.end:
|
|
ret i32 0
|
|
|
|
if.end2:
|
|
ret i32 1
|
|
}
|
|
|
|
; LCSSA, common value each exit
|
|
define i32 @multiple_exit_blocks2(i16* %p, i32 %n) {
|
|
; CHECK-LABEL: @multiple_exit_blocks2(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N:%.*]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
|
|
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
|
|
; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END2:%.*]]
|
|
; CHECK: if.end:
|
|
; CHECK-NEXT: [[I_LCSSA:%.*]] = phi i32 [ [[I]], [[FOR_COND]] ]
|
|
; CHECK-NEXT: ret i32 [[I_LCSSA]]
|
|
; CHECK: if.end2:
|
|
; CHECK-NEXT: [[I_LCSSA1:%.*]] = phi i32 [ [[I]], [[FOR_BODY]] ]
|
|
; CHECK-NEXT: ret i32 [[I_LCSSA1]]
|
|
;
|
|
; TAILFOLD-LABEL: @multiple_exit_blocks2(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[FOR_COND:%.*]]
|
|
; TAILFOLD: for.cond:
|
|
; TAILFOLD-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; TAILFOLD-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N:%.*]]
|
|
; TAILFOLD-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
|
|
; TAILFOLD: for.body:
|
|
; TAILFOLD-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; TAILFOLD-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
|
|
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; TAILFOLD-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
|
|
; TAILFOLD-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END2:%.*]]
|
|
; TAILFOLD: if.end:
|
|
; TAILFOLD-NEXT: [[I_LCSSA:%.*]] = phi i32 [ [[I]], [[FOR_COND]] ]
|
|
; TAILFOLD-NEXT: ret i32 [[I_LCSSA]]
|
|
; TAILFOLD: if.end2:
|
|
; TAILFOLD-NEXT: [[I_LCSSA1:%.*]] = phi i32 [ [[I]], [[FOR_BODY]] ]
|
|
; TAILFOLD-NEXT: ret i32 [[I_LCSSA1]]
|
|
;
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%i = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i, %n
|
|
br i1 %cmp, label %for.body, label %if.end
|
|
|
|
for.body:
|
|
%iprom = sext i32 %i to i64
|
|
%b = getelementptr inbounds i16, i16* %p, i64 %iprom
|
|
store i16 0, i16* %b, align 4
|
|
%inc = add nsw i32 %i, 1
|
|
%cmp2 = icmp slt i32 %i, 2096
|
|
br i1 %cmp2, label %for.cond, label %if.end2
|
|
|
|
if.end:
|
|
ret i32 %i
|
|
|
|
if.end2:
|
|
ret i32 %i
|
|
}
|
|
|
|
; LCSSA, distinct value each exit
|
|
define i32 @multiple_exit_blocks3(i16* %p, i32 %n) {
|
|
; CHECK-LABEL: @multiple_exit_blocks3(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N:%.*]]
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
|
|
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; CHECK-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
|
|
; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END2:%.*]]
|
|
; CHECK: if.end:
|
|
; CHECK-NEXT: [[I_LCSSA:%.*]] = phi i32 [ [[I]], [[FOR_COND]] ]
|
|
; CHECK-NEXT: ret i32 [[I_LCSSA]]
|
|
; CHECK: if.end2:
|
|
; CHECK-NEXT: [[INC_LCSSA:%.*]] = phi i32 [ [[INC]], [[FOR_BODY]] ]
|
|
; CHECK-NEXT: ret i32 [[INC_LCSSA]]
|
|
;
|
|
; TAILFOLD-LABEL: @multiple_exit_blocks3(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[FOR_COND:%.*]]
|
|
; TAILFOLD: for.cond:
|
|
; TAILFOLD-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY:%.*]] ]
|
|
; TAILFOLD-NEXT: [[CMP:%.*]] = icmp slt i32 [[I]], [[N:%.*]]
|
|
; TAILFOLD-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[IF_END:%.*]]
|
|
; TAILFOLD: for.body:
|
|
; TAILFOLD-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; TAILFOLD-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
|
|
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; TAILFOLD-NEXT: [[CMP2:%.*]] = icmp slt i32 [[I]], 2096
|
|
; TAILFOLD-NEXT: br i1 [[CMP2]], label [[FOR_COND]], label [[IF_END2:%.*]]
|
|
; TAILFOLD: if.end:
|
|
; TAILFOLD-NEXT: [[I_LCSSA:%.*]] = phi i32 [ [[I]], [[FOR_COND]] ]
|
|
; TAILFOLD-NEXT: ret i32 [[I_LCSSA]]
|
|
; TAILFOLD: if.end2:
|
|
; TAILFOLD-NEXT: [[INC_LCSSA:%.*]] = phi i32 [ [[INC]], [[FOR_BODY]] ]
|
|
; TAILFOLD-NEXT: ret i32 [[INC_LCSSA]]
|
|
;
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%i = phi i32 [ 0, %entry ], [ %inc, %for.body ]
|
|
%cmp = icmp slt i32 %i, %n
|
|
br i1 %cmp, label %for.body, label %if.end
|
|
|
|
for.body:
|
|
%iprom = sext i32 %i to i64
|
|
%b = getelementptr inbounds i16, i16* %p, i64 %iprom
|
|
store i16 0, i16* %b, align 4
|
|
%inc = add nsw i32 %i, 1
|
|
%cmp2 = icmp slt i32 %i, 2096
|
|
br i1 %cmp2, label %for.cond, label %if.end2
|
|
|
|
if.end:
|
|
ret i32 %i
|
|
|
|
if.end2:
|
|
ret i32 %inc
|
|
}
|
|
|
|
; unique exit case but with a switch as two edges between the same pair of
|
|
; blocks is an often missed edge case
|
|
define i32 @multiple_exit_switch(i16* %p, i32 %n) {
|
|
; CHECK-LABEL: @multiple_exit_switch(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_COND]] ]
|
|
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
|
|
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; CHECK-NEXT: switch i32 [[I]], label [[FOR_COND]] [
|
|
; CHECK-NEXT: i32 2096, label [[IF_END:%.*]]
|
|
; CHECK-NEXT: i32 2097, label [[IF_END]]
|
|
; CHECK-NEXT: ]
|
|
; CHECK: if.end:
|
|
; CHECK-NEXT: [[I_LCSSA:%.*]] = phi i32 [ [[I]], [[FOR_COND]] ], [ [[I]], [[FOR_COND]] ]
|
|
; CHECK-NEXT: ret i32 [[I_LCSSA]]
|
|
;
|
|
; TAILFOLD-LABEL: @multiple_exit_switch(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[FOR_COND:%.*]]
|
|
; TAILFOLD: for.cond:
|
|
; TAILFOLD-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_COND]] ]
|
|
; TAILFOLD-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; TAILFOLD-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
|
|
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; TAILFOLD-NEXT: switch i32 [[I]], label [[FOR_COND]] [
|
|
; TAILFOLD-NEXT: i32 2096, label [[IF_END:%.*]]
|
|
; TAILFOLD-NEXT: i32 2097, label [[IF_END]]
|
|
; TAILFOLD-NEXT: ]
|
|
; TAILFOLD: if.end:
|
|
; TAILFOLD-NEXT: [[I_LCSSA:%.*]] = phi i32 [ [[I]], [[FOR_COND]] ], [ [[I]], [[FOR_COND]] ]
|
|
; TAILFOLD-NEXT: ret i32 [[I_LCSSA]]
|
|
;
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%i = phi i32 [ 0, %entry ], [ %inc, %for.cond ]
|
|
%iprom = sext i32 %i to i64
|
|
%b = getelementptr inbounds i16, i16* %p, i64 %iprom
|
|
store i16 0, i16* %b, align 4
|
|
%inc = add nsw i32 %i, 1
|
|
switch i32 %i, label %for.cond [
|
|
i32 2096, label %if.end
|
|
i32 2097, label %if.end
|
|
]
|
|
|
|
if.end:
|
|
ret i32 %i
|
|
}
|
|
|
|
; multiple exit case but with a switch as multiple exiting edges from
|
|
; a single block is a commonly missed edge case
|
|
define i32 @multiple_exit_switch2(i16* %p, i32 %n) {
|
|
; CHECK-LABEL: @multiple_exit_switch2(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[FOR_COND:%.*]]
|
|
; CHECK: for.cond:
|
|
; CHECK-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_COND]] ]
|
|
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
|
|
; CHECK-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; CHECK-NEXT: switch i32 [[I]], label [[FOR_COND]] [
|
|
; CHECK-NEXT: i32 2096, label [[IF_END:%.*]]
|
|
; CHECK-NEXT: i32 2097, label [[IF_END2:%.*]]
|
|
; CHECK-NEXT: ]
|
|
; CHECK: if.end:
|
|
; CHECK-NEXT: ret i32 0
|
|
; CHECK: if.end2:
|
|
; CHECK-NEXT: ret i32 1
|
|
;
|
|
; TAILFOLD-LABEL: @multiple_exit_switch2(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[FOR_COND:%.*]]
|
|
; TAILFOLD: for.cond:
|
|
; TAILFOLD-NEXT: [[I:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_COND]] ]
|
|
; TAILFOLD-NEXT: [[IPROM:%.*]] = sext i32 [[I]] to i64
|
|
; TAILFOLD-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
|
|
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I]], 1
|
|
; TAILFOLD-NEXT: switch i32 [[I]], label [[FOR_COND]] [
|
|
; TAILFOLD-NEXT: i32 2096, label [[IF_END:%.*]]
|
|
; TAILFOLD-NEXT: i32 2097, label [[IF_END2:%.*]]
|
|
; TAILFOLD-NEXT: ]
|
|
; TAILFOLD: if.end:
|
|
; TAILFOLD-NEXT: ret i32 0
|
|
; TAILFOLD: if.end2:
|
|
; TAILFOLD-NEXT: ret i32 1
|
|
;
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond:
|
|
%i = phi i32 [ 0, %entry ], [ %inc, %for.cond ]
|
|
%iprom = sext i32 %i to i64
|
|
%b = getelementptr inbounds i16, i16* %p, i64 %iprom
|
|
store i16 0, i16* %b, align 4
|
|
%inc = add nsw i32 %i, 1
|
|
switch i32 %i, label %for.cond [
|
|
i32 2096, label %if.end
|
|
i32 2097, label %if.end2
|
|
]
|
|
|
|
if.end:
|
|
ret i32 0
|
|
|
|
if.end2:
|
|
ret i32 1
|
|
}
|
|
|
|
define i32 @multiple_latch1(i16* %p) {
|
|
; CHECK-LABEL: @multiple_latch1(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[I_02:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY_BACKEDGE:%.*]] ]
|
|
; CHECK-NEXT: [[INC]] = add nsw i32 [[I_02]], 1
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[INC]], 16
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY_BACKEDGE]], label [[FOR_SECOND:%.*]]
|
|
; CHECK: for.second:
|
|
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I_02]] to i64
|
|
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
|
|
; CHECK-NEXT: [[CMPS:%.*]] = icmp sgt i32 [[INC]], 16
|
|
; CHECK-NEXT: br i1 [[CMPS]], label [[FOR_BODY_BACKEDGE]], label [[FOR_END:%.*]]
|
|
; CHECK: for.body.backedge:
|
|
; CHECK-NEXT: br label [[FOR_BODY]]
|
|
; CHECK: for.end:
|
|
; CHECK-NEXT: ret i32 0
|
|
;
|
|
; TAILFOLD-LABEL: @multiple_latch1(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[FOR_BODY:%.*]]
|
|
; TAILFOLD: for.body:
|
|
; TAILFOLD-NEXT: [[I_02:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY_BACKEDGE:%.*]] ]
|
|
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I_02]], 1
|
|
; TAILFOLD-NEXT: [[CMP:%.*]] = icmp slt i32 [[INC]], 16
|
|
; TAILFOLD-NEXT: br i1 [[CMP]], label [[FOR_BODY_BACKEDGE]], label [[FOR_SECOND:%.*]]
|
|
; TAILFOLD: for.second:
|
|
; TAILFOLD-NEXT: [[IPROM:%.*]] = sext i32 [[I_02]] to i64
|
|
; TAILFOLD-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
|
|
; TAILFOLD-NEXT: [[CMPS:%.*]] = icmp sgt i32 [[INC]], 16
|
|
; TAILFOLD-NEXT: br i1 [[CMPS]], label [[FOR_BODY_BACKEDGE]], label [[FOR_END:%.*]]
|
|
; TAILFOLD: for.body.backedge:
|
|
; TAILFOLD-NEXT: br label [[FOR_BODY]]
|
|
; TAILFOLD: for.end:
|
|
; TAILFOLD-NEXT: ret i32 0
|
|
;
|
|
entry:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%i.02 = phi i32 [ 0, %entry ], [ %inc, %for.body.backedge]
|
|
%inc = add nsw i32 %i.02, 1
|
|
%cmp = icmp slt i32 %inc, 16
|
|
br i1 %cmp, label %for.body.backedge, label %for.second
|
|
|
|
for.second:
|
|
%iprom = sext i32 %i.02 to i64
|
|
%b = getelementptr inbounds i16, i16* %p, i64 %iprom
|
|
store i16 0, i16* %b, align 4
|
|
%cmps = icmp sgt i32 %inc, 16
|
|
br i1 %cmps, label %for.body.backedge, label %for.end
|
|
|
|
for.body.backedge:
|
|
br label %for.body
|
|
|
|
for.end:
|
|
ret i32 0
|
|
}
|
|
|
|
|
|
; two back branches - loop simplify with convert this to the same form
|
|
; as previous before vectorizer sees it, but show that.
|
|
define i32 @multiple_latch2(i16* %p) {
|
|
; CHECK-LABEL: @multiple_latch2(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
|
|
; CHECK: for.body:
|
|
; CHECK-NEXT: [[I_02:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY_BACKEDGE:%.*]] ]
|
|
; CHECK-NEXT: [[INC]] = add nsw i32 [[I_02]], 1
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[INC]], 16
|
|
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY_BACKEDGE]], label [[FOR_SECOND:%.*]]
|
|
; CHECK: for.body.backedge:
|
|
; CHECK-NEXT: br label [[FOR_BODY]]
|
|
; CHECK: for.second:
|
|
; CHECK-NEXT: [[IPROM:%.*]] = sext i32 [[I_02]] to i64
|
|
; CHECK-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; CHECK-NEXT: store i16 0, i16* [[B]], align 4
|
|
; CHECK-NEXT: [[CMPS:%.*]] = icmp sgt i32 [[INC]], 16
|
|
; CHECK-NEXT: br i1 [[CMPS]], label [[FOR_BODY_BACKEDGE]], label [[FOR_END:%.*]]
|
|
; CHECK: for.end:
|
|
; CHECK-NEXT: ret i32 0
|
|
;
|
|
; TAILFOLD-LABEL: @multiple_latch2(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[FOR_BODY:%.*]]
|
|
; TAILFOLD: for.body:
|
|
; TAILFOLD-NEXT: [[I_02:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY_BACKEDGE:%.*]] ]
|
|
; TAILFOLD-NEXT: [[INC]] = add nsw i32 [[I_02]], 1
|
|
; TAILFOLD-NEXT: [[CMP:%.*]] = icmp slt i32 [[INC]], 16
|
|
; TAILFOLD-NEXT: br i1 [[CMP]], label [[FOR_BODY_BACKEDGE]], label [[FOR_SECOND:%.*]]
|
|
; TAILFOLD: for.body.backedge:
|
|
; TAILFOLD-NEXT: br label [[FOR_BODY]]
|
|
; TAILFOLD: for.second:
|
|
; TAILFOLD-NEXT: [[IPROM:%.*]] = sext i32 [[I_02]] to i64
|
|
; TAILFOLD-NEXT: [[B:%.*]] = getelementptr inbounds i16, i16* [[P:%.*]], i64 [[IPROM]]
|
|
; TAILFOLD-NEXT: store i16 0, i16* [[B]], align 4
|
|
; TAILFOLD-NEXT: [[CMPS:%.*]] = icmp sgt i32 [[INC]], 16
|
|
; TAILFOLD-NEXT: br i1 [[CMPS]], label [[FOR_BODY_BACKEDGE]], label [[FOR_END:%.*]]
|
|
; TAILFOLD: for.end:
|
|
; TAILFOLD-NEXT: ret i32 0
|
|
;
|
|
entry:
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%i.02 = phi i32 [ 0, %entry ], [ %inc, %for.body ], [%inc, %for.second]
|
|
%inc = add nsw i32 %i.02, 1
|
|
%cmp = icmp slt i32 %inc, 16
|
|
br i1 %cmp, label %for.body, label %for.second
|
|
|
|
for.second:
|
|
%iprom = sext i32 %i.02 to i64
|
|
%b = getelementptr inbounds i16, i16* %p, i64 %iprom
|
|
store i16 0, i16* %b, align 4
|
|
%cmps = icmp sgt i32 %inc, 16
|
|
br i1 %cmps, label %for.body, label %for.end
|
|
|
|
for.end:
|
|
ret i32 0
|
|
}
|
|
|
|
|
|
; Check interaction between block predication and early exits. We need the
|
|
; condition on the early exit to remain dead (i.e. not be used when forming
|
|
; the predicate mask).
|
|
define void @scalar_predication(float* %addr) {
|
|
; CHECK-LABEL: @scalar_predication(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
|
; CHECK: vector.ph:
|
|
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
|
|
; CHECK: vector.body:
|
|
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_STORE_CONTINUE2:%.*]] ]
|
|
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[PRED_STORE_CONTINUE2]] ]
|
|
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
|
|
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr float, float* [[ADDR:%.*]], i64 [[TMP0]]
|
|
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr float, float* [[TMP1]], i32 0
|
|
; CHECK-NEXT: [[TMP3:%.*]] = bitcast float* [[TMP2]] to <2 x float>*
|
|
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x float>, <2 x float>* [[TMP3]], align 4
|
|
; CHECK-NEXT: [[TMP4:%.*]] = fcmp oeq <2 x float> [[WIDE_LOAD]], zeroinitializer
|
|
; CHECK-NEXT: [[TMP5:%.*]] = xor <2 x i1> [[TMP4]], <i1 true, i1 true>
|
|
; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x i1> [[TMP5]], i32 0
|
|
; CHECK-NEXT: br i1 [[TMP6]], label [[PRED_STORE_IF:%.*]], label [[PRED_STORE_CONTINUE:%.*]]
|
|
; CHECK: pred.store.if:
|
|
; CHECK-NEXT: store float 1.000000e+01, float* [[TMP1]], align 4
|
|
; CHECK-NEXT: br label [[PRED_STORE_CONTINUE]]
|
|
; CHECK: pred.store.continue:
|
|
; CHECK-NEXT: [[TMP7:%.*]] = extractelement <2 x i1> [[TMP5]], i32 1
|
|
; CHECK-NEXT: br i1 [[TMP7]], label [[PRED_STORE_IF1:%.*]], label [[PRED_STORE_CONTINUE2]]
|
|
; CHECK: pred.store.if1:
|
|
; CHECK-NEXT: [[TMP8:%.*]] = add i64 [[INDEX]], 1
|
|
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr float, float* [[ADDR]], i64 [[TMP8]]
|
|
; CHECK-NEXT: store float 1.000000e+01, float* [[TMP9]], align 4
|
|
; CHECK-NEXT: br label [[PRED_STORE_CONTINUE2]]
|
|
; CHECK: pred.store.continue2:
|
|
; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 2
|
|
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], <i64 2, i64 2>
|
|
; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], 200
|
|
; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP12:!llvm.loop !.*]]
|
|
; CHECK: middle.block:
|
|
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 201, 200
|
|
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
|
|
; CHECK: scalar.ph:
|
|
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 200, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[GEP:%.*]] = getelementptr float, float* [[ADDR]], i64 [[IV]]
|
|
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV]], 200
|
|
; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT]], label [[LOOP_BODY:%.*]]
|
|
; CHECK: loop.body:
|
|
; CHECK-NEXT: [[TMP11:%.*]] = load float, float* [[GEP]], align 4
|
|
; CHECK-NEXT: [[PRED:%.*]] = fcmp oeq float [[TMP11]], 0.000000e+00
|
|
; CHECK-NEXT: br i1 [[PRED]], label [[LOOP_LATCH]], label [[THEN:%.*]]
|
|
; CHECK: then:
|
|
; CHECK-NEXT: store float 1.000000e+01, float* [[GEP]], align 4
|
|
; CHECK-NEXT: br label [[LOOP_LATCH]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]], [[LOOP13:!llvm.loop !.*]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
; TAILFOLD-LABEL: @scalar_predication(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; TAILFOLD: loop.header:
|
|
; TAILFOLD-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; TAILFOLD-NEXT: [[GEP:%.*]] = getelementptr float, float* [[ADDR:%.*]], i64 [[IV]]
|
|
; TAILFOLD-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV]], 200
|
|
; TAILFOLD-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT:%.*]], label [[LOOP_BODY:%.*]]
|
|
; TAILFOLD: loop.body:
|
|
; TAILFOLD-NEXT: [[TMP0:%.*]] = load float, float* [[GEP]], align 4
|
|
; TAILFOLD-NEXT: [[PRED:%.*]] = fcmp oeq float [[TMP0]], 0.000000e+00
|
|
; TAILFOLD-NEXT: br i1 [[PRED]], label [[LOOP_LATCH]], label [[THEN:%.*]]
|
|
; TAILFOLD: then:
|
|
; TAILFOLD-NEXT: store float 1.000000e+01, float* [[GEP]], align 4
|
|
; TAILFOLD-NEXT: br label [[LOOP_LATCH]]
|
|
; TAILFOLD: loop.latch:
|
|
; TAILFOLD-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
|
|
; TAILFOLD-NEXT: br label [[LOOP_HEADER]]
|
|
; TAILFOLD: exit:
|
|
; TAILFOLD-NEXT: ret void
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%gep = getelementptr float, float* %addr, i64 %iv
|
|
%exitcond.not = icmp eq i64 %iv, 200
|
|
br i1 %exitcond.not, label %exit, label %loop.body
|
|
|
|
loop.body:
|
|
%0 = load float, float* %gep, align 4
|
|
%pred = fcmp oeq float %0, 0.0
|
|
br i1 %pred, label %loop.latch, label %then
|
|
|
|
then:
|
|
store float 10.0, float* %gep, align 4
|
|
br label %loop.latch
|
|
|
|
loop.latch:
|
|
%iv.next = add nuw nsw i64 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define i32 @me_reduction(i32* %addr) {
|
|
; CHECK-LABEL: @me_reduction(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
|
|
; CHECK: vector.ph:
|
|
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
|
|
; CHECK: vector.body:
|
|
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <2 x i32> [ zeroinitializer, [[VECTOR_PH]] ], [ [[TMP5:%.*]], [[VECTOR_BODY]] ]
|
|
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
|
|
; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[INDEX]], 1
|
|
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr i32, i32* [[ADDR:%.*]], i64 [[TMP0]]
|
|
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr i32, i32* [[TMP2]], i32 0
|
|
; CHECK-NEXT: [[TMP4:%.*]] = bitcast i32* [[TMP3]] to <2 x i32>*
|
|
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x i32>, <2 x i32>* [[TMP4]], align 4
|
|
; CHECK-NEXT: [[TMP5]] = add <2 x i32> [[VEC_PHI]], [[WIDE_LOAD]]
|
|
; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 2
|
|
; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], <i64 2, i64 2>
|
|
; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT]], 200
|
|
; CHECK-NEXT: br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP14:!llvm.loop !.*]]
|
|
; CHECK: middle.block:
|
|
; CHECK-NEXT: [[RDX_SHUF:%.*]] = shufflevector <2 x i32> [[TMP5]], <2 x i32> poison, <2 x i32> <i32 1, i32 undef>
|
|
; CHECK-NEXT: [[BIN_RDX:%.*]] = add <2 x i32> [[TMP5]], [[RDX_SHUF]]
|
|
; CHECK-NEXT: [[TMP7:%.*]] = extractelement <2 x i32> [[BIN_RDX]], i32 0
|
|
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 201, 200
|
|
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
|
|
; CHECK: scalar.ph:
|
|
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 200, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
|
|
; CHECK-NEXT: [[BC_MERGE_RDX:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[TMP7]], [[MIDDLE_BLOCK]] ]
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[ACCUM:%.*]] = phi i32 [ [[BC_MERGE_RDX]], [[SCALAR_PH]] ], [ [[ACCUM_NEXT:%.*]], [[LOOP_LATCH]] ]
|
|
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[ADDR]], i64 [[IV]]
|
|
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV]], 200
|
|
; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT]], label [[LOOP_LATCH]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: [[TMP8:%.*]] = load i32, i32* [[GEP]], align 4
|
|
; CHECK-NEXT: [[ACCUM_NEXT]] = add i32 [[ACCUM]], [[TMP8]]
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
|
|
; CHECK-NEXT: [[EXITCOND2_NOT:%.*]] = icmp eq i64 [[IV]], 400
|
|
; CHECK-NEXT: br i1 [[EXITCOND2_NOT]], label [[EXIT]], label [[LOOP_HEADER]], [[LOOP15:!llvm.loop !.*]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: [[LCSSA:%.*]] = phi i32 [ 0, [[LOOP_HEADER]] ], [ [[ACCUM_NEXT]], [[LOOP_LATCH]] ], [ [[TMP7]], [[MIDDLE_BLOCK]] ]
|
|
; CHECK-NEXT: ret i32 [[LCSSA]]
|
|
;
|
|
; TAILFOLD-LABEL: @me_reduction(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; TAILFOLD: loop.header:
|
|
; TAILFOLD-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; TAILFOLD-NEXT: [[ACCUM:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[ACCUM_NEXT:%.*]], [[LOOP_LATCH]] ]
|
|
; TAILFOLD-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[ADDR:%.*]], i64 [[IV]]
|
|
; TAILFOLD-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV]], 200
|
|
; TAILFOLD-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT:%.*]], label [[LOOP_LATCH]]
|
|
; TAILFOLD: loop.latch:
|
|
; TAILFOLD-NEXT: [[TMP0:%.*]] = load i32, i32* [[GEP]], align 4
|
|
; TAILFOLD-NEXT: [[ACCUM_NEXT]] = add i32 [[ACCUM]], [[TMP0]]
|
|
; TAILFOLD-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
|
|
; TAILFOLD-NEXT: [[EXITCOND2_NOT:%.*]] = icmp eq i64 [[IV]], 400
|
|
; TAILFOLD-NEXT: br i1 [[EXITCOND2_NOT]], label [[EXIT]], label [[LOOP_HEADER]]
|
|
; TAILFOLD: exit:
|
|
; TAILFOLD-NEXT: [[LCSSA:%.*]] = phi i32 [ 0, [[LOOP_HEADER]] ], [ [[ACCUM_NEXT]], [[LOOP_LATCH]] ]
|
|
; TAILFOLD-NEXT: ret i32 [[LCSSA]]
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%accum = phi i32 [0, %entry], [%accum.next, %loop.latch]
|
|
%gep = getelementptr i32, i32* %addr, i64 %iv
|
|
%exitcond.not = icmp eq i64 %iv, 200
|
|
br i1 %exitcond.not, label %exit, label %loop.latch
|
|
|
|
loop.latch:
|
|
%0 = load i32, i32* %gep, align 4
|
|
%accum.next = add i32 %accum, %0
|
|
%iv.next = add nuw nsw i64 %iv, 1
|
|
%exitcond2.not = icmp eq i64 %iv, 400
|
|
br i1 %exitcond2.not, label %exit, label %loop.header
|
|
|
|
exit:
|
|
%lcssa = phi i32 [0, %loop.header], [%accum.next, %loop.latch]
|
|
ret i32 %lcssa
|
|
}
|
|
|
|
; TODO: The current definition of reduction is too strict, we can vectorize
|
|
; this. There's an analogous single exit case where we extract the N-1
|
|
; value of the reduction that we can also handle. If we fix the later, the
|
|
; multiple exit case probably falls out.
|
|
define i32 @me_reduction2(i32* %addr) {
|
|
; CHECK-LABEL: @me_reduction2(
|
|
; CHECK-NEXT: entry:
|
|
; CHECK-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; CHECK: loop.header:
|
|
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; CHECK-NEXT: [[ACCUM:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[ACCUM_NEXT:%.*]], [[LOOP_LATCH]] ]
|
|
; CHECK-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[ADDR:%.*]], i64 [[IV]]
|
|
; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV]], 200
|
|
; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT:%.*]], label [[LOOP_LATCH]]
|
|
; CHECK: loop.latch:
|
|
; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[GEP]], align 4
|
|
; CHECK-NEXT: [[ACCUM_NEXT]] = add i32 [[ACCUM]], [[TMP0]]
|
|
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
|
|
; CHECK-NEXT: br label [[LOOP_HEADER]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: [[ACCUM_LCSSA:%.*]] = phi i32 [ [[ACCUM]], [[LOOP_HEADER]] ]
|
|
; CHECK-NEXT: ret i32 [[ACCUM_LCSSA]]
|
|
;
|
|
; TAILFOLD-LABEL: @me_reduction2(
|
|
; TAILFOLD-NEXT: entry:
|
|
; TAILFOLD-NEXT: br label [[LOOP_HEADER:%.*]]
|
|
; TAILFOLD: loop.header:
|
|
; TAILFOLD-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
|
|
; TAILFOLD-NEXT: [[ACCUM:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[ACCUM_NEXT:%.*]], [[LOOP_LATCH]] ]
|
|
; TAILFOLD-NEXT: [[GEP:%.*]] = getelementptr i32, i32* [[ADDR:%.*]], i64 [[IV]]
|
|
; TAILFOLD-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV]], 200
|
|
; TAILFOLD-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT:%.*]], label [[LOOP_LATCH]]
|
|
; TAILFOLD: loop.latch:
|
|
; TAILFOLD-NEXT: [[TMP0:%.*]] = load i32, i32* [[GEP]], align 4
|
|
; TAILFOLD-NEXT: [[ACCUM_NEXT]] = add i32 [[ACCUM]], [[TMP0]]
|
|
; TAILFOLD-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
|
|
; TAILFOLD-NEXT: br label [[LOOP_HEADER]]
|
|
; TAILFOLD: exit:
|
|
; TAILFOLD-NEXT: [[ACCUM_LCSSA:%.*]] = phi i32 [ [[ACCUM]], [[LOOP_HEADER]] ]
|
|
; TAILFOLD-NEXT: ret i32 [[ACCUM_LCSSA]]
|
|
;
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
%accum = phi i32 [0, %entry], [%accum.next, %loop.latch]
|
|
%gep = getelementptr i32, i32* %addr, i64 %iv
|
|
%exitcond.not = icmp eq i64 %iv, 200
|
|
br i1 %exitcond.not, label %exit, label %loop.latch
|
|
|
|
loop.latch:
|
|
%0 = load i32, i32* %gep, align 4
|
|
%accum.next = add i32 %accum, %0
|
|
%iv.next = add nuw nsw i64 %iv, 1
|
|
br label %loop.header
|
|
|
|
exit:
|
|
ret i32 %accum
|
|
}
|
|
|