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37 lines
1.7 KiB
LLVM
37 lines
1.7 KiB
LLVM
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; RUN: opt -S -mtriple=x86_64-pc_linux -loop-vectorize -instcombine < %s | FileCheck %s --check-prefix=NORMAL
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; RUN: opt -S -mtriple=x86_64-pc_linux -loop-vectorize -instcombine -mcpu=slm < %s | FileCheck %s --check-prefix=NORMAL
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; RUN: opt -S -mtriple=x86_64-pc_linux -loop-vectorize -instcombine -mcpu=atom < %s | FileCheck %s --check-prefix=ATOM
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; NORMAL-LABEL: foo
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; NORMAL: %[[WIDE:.*]] = load <8 x i32>, <8 x i32>* %{{.*}}, align 4
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; NORMAL: %[[STRIDED1:.*]] = shufflevector <8 x i32> %[[WIDE]], <8 x i32> undef, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
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; NORMAL: %[[STRIDED2:.*]] = shufflevector <8 x i32> %wide.vec, <8 x i32> undef, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
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; NORMAL: add nsw <4 x i32> %[[STRIDED2]], %[[STRIDED1]]
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; ATOM-LABEL: foo
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; ATOM: load i32
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; ATOM: load i32
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; ATOM: store i32
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define void @foo(i32* noalias nocapture %a, i32* noalias nocapture readonly %b) {
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entry:
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br label %for.body
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for.cond.cleanup: ; preds = %for.body
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ret void
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for.body: ; preds = %for.body, %entry
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%0 = shl nsw i64 %indvars.iv, 1
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%arrayidx = getelementptr inbounds i32, i32* %b, i64 %0
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%1 = load i32, i32* %arrayidx, align 4
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%2 = or i64 %0, 1
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%arrayidx3 = getelementptr inbounds i32, i32* %b, i64 %2
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%3 = load i32, i32* %arrayidx3, align 4
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%add4 = add nsw i32 %3, %1
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%arrayidx6 = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
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store i32 %add4, i32* %arrayidx6, align 4
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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, 1024
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br i1 %exitcond, label %for.cond.cleanup, label %for.body
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}
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