228 lines
13 KiB
LLVM
228 lines
13 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -loop-vectorize -mcpu=corei7-avx -S -vectorizer-min-trip-count=21 | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux"
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;
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; The source code for the test:
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;
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; void foo(float* restrict A, float* restrict B)
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; {
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; for (int i = 0; i < 20; ++i) A[i] += B[i];
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; }
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;
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;
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; This loop will be vectorized, although the trip count is below the threshold, but vectorization is explicitly forced in metadata.
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;
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define void @vectorized(float* noalias nocapture %A, float* noalias nocapture readonly %B) {
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; CHECK-LABEL: @vectorized(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
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; CHECK: vector.ph:
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; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
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; CHECK: vector.body:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds float, float* [[B:%.*]], i64 [[TMP0]]
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds float, float* [[TMP1]], i32 0
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; CHECK-NEXT: [[TMP3:%.*]] = bitcast float* [[TMP2]] to <8 x float>*
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; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <8 x float>, <8 x float>* [[TMP3]], align 4, !llvm.access.group !0
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; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[TMP0]]
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; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds float, float* [[TMP4]], i32 0
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; CHECK-NEXT: [[TMP6:%.*]] = bitcast float* [[TMP5]] to <8 x float>*
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; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <8 x float>, <8 x float>* [[TMP6]], align 4, !llvm.access.group !0
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; CHECK-NEXT: [[TMP7:%.*]] = fadd fast <8 x float> [[WIDE_LOAD]], [[WIDE_LOAD1]]
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; CHECK-NEXT: [[TMP8:%.*]] = bitcast float* [[TMP5]] to <8 x float>*
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; CHECK-NEXT: store <8 x float> [[TMP7]], <8 x float>* [[TMP8]], align 4, !llvm.access.group !0
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; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 8
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; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT]], 16
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; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP1:!llvm.loop !.*]]
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; CHECK: middle.block:
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; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 20, 16
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; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END:%.*]], label [[SCALAR_PH]]
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; CHECK: scalar.ph:
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; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 16, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[B]], i64 [[INDVARS_IV]]
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; CHECK-NEXT: [[TMP10:%.*]] = load float, float* [[ARRAYIDX]], align 4, !llvm.access.group !0
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; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV]]
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; CHECK-NEXT: [[TMP11:%.*]] = load float, float* [[ARRAYIDX2]], align 4, !llvm.access.group !0
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; CHECK-NEXT: [[ADD:%.*]] = fadd fast float [[TMP10]], [[TMP11]]
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; CHECK-NEXT: store float [[ADD]], float* [[ARRAYIDX2]], align 4, !llvm.access.group !0
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; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 20
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]], [[LOOP4:!llvm.loop !.*]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds float, float* %B, i64 %indvars.iv
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%0 = load float, float* %arrayidx, align 4, !llvm.access.group !11
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%arrayidx2 = getelementptr inbounds float, float* %A, i64 %indvars.iv
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%1 = load float, float* %arrayidx2, align 4, !llvm.access.group !11
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%add = fadd fast float %0, %1
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store float %add, float* %arrayidx2, align 4, !llvm.access.group !11
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, 20
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br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !1
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for.end:
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ret void
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}
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!1 = !{!1, !2, !{!"llvm.loop.parallel_accesses", !11}}
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!2 = !{!"llvm.loop.vectorize.enable", i1 true}
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!11 = distinct !{}
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;
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; This loop will be vectorized as the trip count is below the threshold but no
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; scalar iterations are needed thanks to folding its tail.
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;
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define void @vectorized1(float* noalias nocapture %A, float* noalias nocapture readonly %B) {
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; CHECK-LABEL: @vectorized1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
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; CHECK: vector.ph:
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; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
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; CHECK: vector.body:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <8 x i64> poison, i64 [[INDEX]], i32 0
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; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <8 x i64> [[BROADCAST_SPLATINSERT]], <8 x i64> poison, <8 x i32> zeroinitializer
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; CHECK-NEXT: [[INDUCTION:%.*]] = add <8 x i64> [[BROADCAST_SPLAT]], <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7>
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; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
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; CHECK-NEXT: [[TMP1:%.*]] = icmp ule <8 x i64> [[INDUCTION]], <i64 19, i64 19, i64 19, i64 19, i64 19, i64 19, i64 19, i64 19>
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds float, float* [[B:%.*]], i64 [[TMP0]]
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; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds float, float* [[TMP2]], i32 0
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; CHECK-NEXT: [[TMP4:%.*]] = bitcast float* [[TMP3]] to <8 x float>*
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; CHECK-NEXT: [[WIDE_MASKED_LOAD:%.*]] = call <8 x float> @llvm.masked.load.v8f32.p0v8f32(<8 x float>* [[TMP4]], i32 4, <8 x i1> [[TMP1]], <8 x float> poison), !llvm.access.group !6
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; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[TMP0]]
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; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds float, float* [[TMP5]], i32 0
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; CHECK-NEXT: [[TMP7:%.*]] = bitcast float* [[TMP6]] to <8 x float>*
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; CHECK-NEXT: [[WIDE_MASKED_LOAD1:%.*]] = call <8 x float> @llvm.masked.load.v8f32.p0v8f32(<8 x float>* [[TMP7]], i32 4, <8 x i1> [[TMP1]], <8 x float> poison), !llvm.access.group !6
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; CHECK-NEXT: [[TMP8:%.*]] = fadd fast <8 x float> [[WIDE_MASKED_LOAD]], [[WIDE_MASKED_LOAD1]]
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; CHECK-NEXT: [[TMP9:%.*]] = bitcast float* [[TMP6]] to <8 x float>*
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; CHECK-NEXT: call void @llvm.masked.store.v8f32.p0v8f32(<8 x float> [[TMP8]], <8 x float>* [[TMP9]], i32 4, <8 x i1> [[TMP1]]), !llvm.access.group !6
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; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 8
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; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], 24
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; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP7:!llvm.loop !.*]]
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; CHECK: middle.block:
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; CHECK-NEXT: br i1 true, label [[FOR_END:%.*]], label [[SCALAR_PH]]
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; CHECK: scalar.ph:
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; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 24, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[B]], i64 [[INDVARS_IV]]
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; CHECK-NEXT: [[TMP11:%.*]] = load float, float* [[ARRAYIDX]], align 4, !llvm.access.group !6
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; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV]]
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; CHECK-NEXT: [[TMP12:%.*]] = load float, float* [[ARRAYIDX2]], align 4, !llvm.access.group !6
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; CHECK-NEXT: [[ADD:%.*]] = fadd fast float [[TMP11]], [[TMP12]]
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; CHECK-NEXT: store float [[ADD]], float* [[ARRAYIDX2]], align 4, !llvm.access.group !6
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; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 20
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]], [[LOOP9:!llvm.loop !.*]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds float, float* %B, i64 %indvars.iv
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%0 = load float, float* %arrayidx, align 4, !llvm.access.group !13
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%arrayidx2 = getelementptr inbounds float, float* %A, i64 %indvars.iv
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%1 = load float, float* %arrayidx2, align 4, !llvm.access.group !13
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%add = fadd fast float %0, %1
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store float %add, float* %arrayidx2, align 4, !llvm.access.group !13
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, 20
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br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !3
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for.end:
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ret void
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}
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!3 = !{!3, !{!"llvm.loop.parallel_accesses", !13}}
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!13 = distinct !{}
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;
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; This loop will be vectorized as the trip count is below the threshold but no
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; scalar iterations are needed.
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;
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define void @vectorized2(float* noalias nocapture %A, float* noalias nocapture readonly %B) {
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; CHECK-LABEL: @vectorized2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
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; CHECK: vector.ph:
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; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
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; CHECK: vector.body:
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; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <8 x i64> poison, i64 [[INDEX]], i32 0
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; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <8 x i64> [[BROADCAST_SPLATINSERT]], <8 x i64> poison, <8 x i32> zeroinitializer
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; CHECK-NEXT: [[INDUCTION:%.*]] = add <8 x i64> [[BROADCAST_SPLAT]], <i64 0, i64 1, i64 2, i64 3, i64 4, i64 5, i64 6, i64 7>
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; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0
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; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds float, float* [[B:%.*]], i64 [[TMP0]]
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; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds float, float* [[TMP1]], i32 0
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; CHECK-NEXT: [[TMP3:%.*]] = bitcast float* [[TMP2]] to <8 x float>*
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; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <8 x float>, <8 x float>* [[TMP3]], align 4, !llvm.access.group !6
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; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds float, float* [[A:%.*]], i64 [[TMP0]]
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; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds float, float* [[TMP4]], i32 0
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; CHECK-NEXT: [[TMP6:%.*]] = bitcast float* [[TMP5]] to <8 x float>*
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; CHECK-NEXT: [[WIDE_LOAD1:%.*]] = load <8 x float>, <8 x float>* [[TMP6]], align 4, !llvm.access.group !6
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; CHECK-NEXT: [[TMP7:%.*]] = fadd fast <8 x float> [[WIDE_LOAD]], [[WIDE_LOAD1]]
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; CHECK-NEXT: [[TMP8:%.*]] = bitcast float* [[TMP5]] to <8 x float>*
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; CHECK-NEXT: store <8 x float> [[TMP7]], <8 x float>* [[TMP8]], align 4, !llvm.access.group !6
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; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 8
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; CHECK-NEXT: [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT]], 16
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; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP10:!llvm.loop !.*]]
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; CHECK: middle.block:
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; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 16, 16
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; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_END:%.*]], label [[SCALAR_PH]]
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; CHECK: scalar.ph:
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; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 16, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, float* [[B]], i64 [[INDVARS_IV]]
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; CHECK-NEXT: [[TMP10:%.*]] = load float, float* [[ARRAYIDX]], align 4, !llvm.access.group !6
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; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds float, float* [[A]], i64 [[INDVARS_IV]]
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; CHECK-NEXT: [[TMP11:%.*]] = load float, float* [[ARRAYIDX2]], align 4, !llvm.access.group !6
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; CHECK-NEXT: [[ADD:%.*]] = fadd fast float [[TMP10]], [[TMP11]]
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; CHECK-NEXT: store float [[ADD]], float* [[ARRAYIDX2]], align 4, !llvm.access.group !6
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; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
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; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 16
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; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]], [[LOOP11:!llvm.loop !.*]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds float, float* %B, i64 %indvars.iv
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%0 = load float, float* %arrayidx, align 4, !llvm.access.group !13
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%arrayidx2 = getelementptr inbounds float, float* %A, i64 %indvars.iv
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%1 = load float, float* %arrayidx2, align 4, !llvm.access.group !13
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%add = fadd fast float %0, %1
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store float %add, float* %arrayidx2, align 4, !llvm.access.group !13
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, 16
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br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !4
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for.end:
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ret void
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}
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!4 = !{!4}
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