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Fixes infinite loop in resolve().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30540 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky
2006-09-20 17:04:01 +00:00
parent 4563326472
commit 406fc0cb49
2 changed files with 129 additions and 87 deletions
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test/Transforms/PredicateSimplifier/2006-09-20-ResolveCycle.ll
+28
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@@ -0,0 +1,28 @@
; RUN: llvm-as < %s | opt -predsimplify -disable-output
void %gs_image_next() {
entry:
%tmp = load uint* null ; <uint> [#uses=2]
br bool false, label %cond_next21, label %UnifiedReturnBlock
cond_next21: ; preds = %entry
br bool false, label %cond_next42, label %UnifiedReturnBlock
cond_next42: ; preds = %cond_next21
br label %cond_true158
cond_next134: ; preds = %cond_true158
%tmp1571 = seteq uint 0, %min ; <bool> [#uses=0]
ret void
cond_true158: ; preds = %cond_true158, %cond_next42
%tmp47 = sub uint %tmp, 0 ; <uint> [#uses=2]
%tmp49 = setle uint %tmp47, 0 ; <bool> [#uses=1]
%min = select bool %tmp49, uint %tmp47, uint 0 ; <uint> [#uses=2]
%tmp92 = add uint %min, 0 ; <uint> [#uses=1]
%tmp101 = seteq uint %tmp92, %tmp ; <bool> [#uses=1]
br bool %tmp101, label %cond_next134, label %cond_true158
UnifiedReturnBlock: ; preds = %cond_next21, %entry
ret void
}