42 lines
1.1 KiB
LLVM
42 lines
1.1 KiB
LLVM
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; RUN: opt -passes="scc-oz-module-inliner,function(loop-mssa(no-op-loop)),recompute-globalsaa,function(loop-mssa(simple-loop-unswitch<nontrivial>))" -disable-output < %s
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; Check that don't crash if the Alias Analysis returns better results than
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; before when cloning loop's memoryssa.
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@a = internal global i16 0
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define void @h() {
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entry:
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br label %end
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body: ; No predecessors!
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call void @g(ptr null)
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br label %end
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end: ; preds = %while.body, %entry
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ret void
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}
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define internal void @g(ptr %a) #0 {
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entry:
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br label %while.cond
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while.cond: ; preds = %while.body, %entry
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%0 = load i16, ptr %a, align 1
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%tobool.not = icmp eq i16 %0, 0
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br i1 %tobool.not, label %while.end, label %while.body
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while.body: ; preds = %while.cond
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call void @f()
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br label %while.cond
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while.end: ; preds = %while.cond
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ret void
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}
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define internal void @f() #0 {
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store i16 0, ptr @a, align 1
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ret void
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}
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attributes #0 = { noinline }
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