forked from OSchip/llvm-project
38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
; RUN: opt < %s -basicaa -licm -S | FileCheck %s
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; Make sure we don't hoist a conditionally-executed store out of the loop;
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; it would violate the concurrency memory model
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@g = common global i32 0, align 4
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define void @bar(i32 %n, i32 %b) nounwind uwtable ssp {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %inc5, %for.inc ]
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%cmp = icmp slt i32 %i.0, %n
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%tobool = icmp eq i32 %b, 0
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br i1 %tobool, label %for.inc, label %if.then
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if.then: ; preds = %for.body
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%tmp3 = load i32, i32* @g, align 4
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%inc = add nsw i32 %tmp3, 1
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store i32 %inc, i32* @g, align 4
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br label %for.inc
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; CHECK: load i32, i32*
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; CHECK-NEXT: add
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; CHECK-NEXT: store i32
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for.inc: ; preds = %for.body, %if.then
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%inc5 = add nsw i32 %i.0, 1
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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}
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