47 lines
1.5 KiB
LLVM
47 lines
1.5 KiB
LLVM
; RUN: opt -basicaa -loop-vectorize -force-vector-interleave=1 -S -mcpu=core-avx2
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@b = common global [256 x i32] zeroinitializer, align 16
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@a = common global [256 x i32] zeroinitializer, align 16
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; unsigned int a[256], b[256];
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; void foo() {
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; for (i = 0; i < 256; i++) {
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; if (b[i] > a[i])
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; a[i] = b[i];
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; }
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; }
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; CHECK-LABEL: foo
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; CHECK: load <8 x i32>
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; CHECK: icmp ugt <8 x i32>
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; CHECK: masked.store
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define void @foo() {
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entry:
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br label %for.body
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for.body: ; preds = %for.inc, %entry
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.inc ]
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%arrayidx = getelementptr inbounds [256 x i32], [256 x i32]* @b, i64 0, i64 %indvars.iv
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%0 = load i32, i32* %arrayidx, align 4
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%arrayidx2 = getelementptr inbounds [256 x i32], [256 x i32]* @a, i64 0, i64 %indvars.iv
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%1 = load i32, i32* %arrayidx2, align 4
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%cmp3 = icmp ugt i32 %0, %1
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br i1 %cmp3, label %if.then, label %for.inc
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if.then: ; preds = %for.body
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store i32 %0, i32* %arrayidx2, align 4
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br label %for.inc
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for.inc: ; preds = %for.body, %if.then
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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, 256
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.inc
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ret void
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}
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