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baf8f6a261
With option OptForSize enabled, the Loop Vectorizer is not supposed to create tail loop. The condition checking that was invalid and was not matching to the comment above. Patch by Marianne Mailhot-Sarrasin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240556 91177308-0d34-0410-b5e6-96231b3b80d8
35 lines
1.3 KiB
LLVM
35 lines
1.3 KiB
LLVM
; This test verifies that the loop vectorizer will NOT produce a tail
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; loop with Optimize for size attibute.
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; REQUIRES: asserts
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; RUN: opt < %s -loop-vectorize -Os -debug -debug-only=loop-vectorize -S 2>&1 | FileCheck %s
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;CHECK-NOT: <2 x i8>
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;CHECK-NOT: <4 x i8>
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;CHECK: Aborting. A tail loop is required in Os.
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target datalayout = "E-m:e-p:32:32-i64:32-f64:32:64-a:0:32-n32-S128"
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@tab = common global [32 x i8] zeroinitializer, align 1
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; Function Attrs: nounwind optsize
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define i32 @foo() #0 {
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%arrayidx = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %i.08
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%0 = load i8, i8* %arrayidx, align 1
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%cmp1 = icmp eq i8 %0, 0
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%. = select i1 %cmp1, i8 2, i8 1
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store i8 %., i8* %arrayidx, align 1
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%inc = add nsw i32 %i.08, 1
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%exitcond = icmp eq i32 %i.08, 202
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret i32 0
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}
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attributes #0 = { nounwind optsize "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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