70 lines
3.7 KiB
LLVM
70 lines
3.7 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -loop-vectorize -force-vector-interleave=3 -force-vector-width=2 -S | FileCheck %s
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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; Make sure the loop is vectorized and unrolled under -Os without folding its
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; tail based on its trip-count being provably divisible by chosen VFxIC.
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define dso_local void @constTC(i32* noalias nocapture %A) optsize {
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; CHECK-LABEL: @constTC(
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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 i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
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; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i32> poison, i32 [[INDEX]], i32 0
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; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i32> [[BROADCAST_SPLATINSERT]], <2 x i32> poison, <2 x i32> zeroinitializer
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; CHECK-NEXT: [[INDUCTION:%.*]] = add <2 x i32> [[BROADCAST_SPLAT]], <i32 0, i32 1>
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; CHECK-NEXT: [[INDUCTION1:%.*]] = add <2 x i32> [[BROADCAST_SPLAT]], <i32 2, i32 3>
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; CHECK-NEXT: [[INDUCTION2:%.*]] = add <2 x i32> [[BROADCAST_SPLAT]], <i32 4, i32 5>
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; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[INDEX]], 0
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; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[INDEX]], 2
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; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[INDEX]], 4
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; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i32 [[TMP0]]
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; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i32, i32* [[A]], i32 [[TMP1]]
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; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i32, i32* [[A]], i32 [[TMP2]]
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; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, i32* [[TMP3]], i32 0
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; CHECK-NEXT: [[TMP7:%.*]] = bitcast i32* [[TMP6]] to <2 x i32>*
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; CHECK-NEXT: store <2 x i32> <i32 13, i32 13>, <2 x i32>* [[TMP7]], align 1
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; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, i32* [[TMP3]], i32 2
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; CHECK-NEXT: [[TMP9:%.*]] = bitcast i32* [[TMP8]] to <2 x i32>*
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; CHECK-NEXT: store <2 x i32> <i32 13, i32 13>, <2 x i32>* [[TMP9]], align 1
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; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, i32* [[TMP3]], i32 4
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; CHECK-NEXT: [[TMP11:%.*]] = bitcast i32* [[TMP10]] to <2 x i32>*
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; CHECK-NEXT: store <2 x i32> <i32 13, i32 13>, <2 x i32>* [[TMP11]], align 1
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; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 6
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; CHECK-NEXT: [[TMP12:%.*]] = icmp eq i32 [[INDEX_NEXT]], 1800
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; CHECK-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP0:!llvm.loop !.*]]
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; CHECK: middle.block:
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; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 1800, 1800
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; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]]
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; CHECK: scalar.ph:
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; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ 1800, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: br label [[LOOP:%.*]]
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; CHECK: loop:
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; CHECK-NEXT: [[RIV:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[RIVPLUS1:%.*]], [[LOOP]] ]
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[A]], i32 [[RIV]]
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; CHECK-NEXT: store i32 13, i32* [[ARRAYIDX]], align 1
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; CHECK-NEXT: [[RIVPLUS1]] = add nuw nsw i32 [[RIV]], 1
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[RIVPLUS1]], 1800
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; CHECK-NEXT: br i1 [[COND]], label [[EXIT]], label [[LOOP]], [[LOOP2:!llvm.loop !.*]]
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; CHECK: exit:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %loop
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loop:
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%riv = phi i32 [ 0, %entry ], [ %rivPlus1, %loop ]
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%arrayidx = getelementptr inbounds i32, i32* %A, i32 %riv
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store i32 13, i32* %arrayidx, align 1
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%rivPlus1 = add nuw nsw i32 %riv, 1
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%cond = icmp eq i32 %rivPlus1, 1800
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br i1 %cond, label %exit, label %loop
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exit:
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ret void
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}
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