34 lines
1.1 KiB
LLVM
34 lines
1.1 KiB
LLVM
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; RUN: opt -loop-idiom < %s -S | FileCheck %s
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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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declare void @ff()
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define void @test(i8* noalias nocapture %base, i64 %size) #1 {
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entry:
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%cmp3 = icmp eq i64 %size, 0
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br i1 %cmp3, label %for.end, label %for.body.preheader
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for.body.preheader: ; preds = %entry
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br label %for.body
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for.body: ; preds = %for.body.preheader, %for.body
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; CHECK-LABEL: @test(
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; CHECK-NOT: llvm.memset
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%indvars.iv = phi i64 [ 0, %for.body.preheader ], [ %indvars.iv.next, %for.body ]
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tail call void @ff()
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%arrayidx = getelementptr inbounds i8, i8* %base, i64 %indvars.iv
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store i8 0, i8* %arrayidx, align 1
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%indvars.iv.next = add i64 %indvars.iv, 1
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%exitcond = icmp ne i64 %indvars.iv.next, %size
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br i1 %exitcond, label %for.body, label %for.end.loopexit
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for.end.loopexit: ; preds = %for.body
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br label %for.end
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for.end: ; preds = %for.end.loopexit, %entry
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ret void
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}
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attributes #1 = { uwtable }
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