32 lines
722 B
LLVM
32 lines
722 B
LLVM
; RUN: opt -S -loop-vectorize < %s | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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; Check that we vectorize only bottom-tested loops.
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; This is a reduced testcase from PR21302.
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;
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; rdar://problem/18886083
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%struct.X = type { i32, i16 }
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; CHECK-LABEL: @foo(
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; CHECK-NOT: vector.body
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define void @foo(i32 %n) {
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entry:
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br label %for.cond
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for.cond:
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%i = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%cmp = icmp slt i32 %i, %n
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br i1 %cmp, label %for.body, label %if.end
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for.body:
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%iprom = sext i32 %i to i64
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%b = getelementptr inbounds %struct.X, %struct.X* undef, i64 %iprom, i32 1
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store i16 0, i16* %b, align 4
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%inc = add nsw i32 %i, 1
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br label %for.cond
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if.end:
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ret void
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}
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