maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

PR4662: Fix a crash introduced by the recent LLVMContext changes. 

llvm-svn: 77716
This commit is contained in:
Eli Friedman 2009-07-31 19:36:47 +00:00
parent 01ea674c5b
commit ca9a4f1045
2 changed files with 16 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
llvm/lib/Transforms/Scalar/TailDuplication.cpp
View File

@ -360,7 +360,8 @@ void TailDup::eliminateUnconditionalBranch(BranchInst *Branch) {
Instruction *Inst = BI++;
if (isInstructionTriviallyDead(Inst))
Inst->eraseFromParent();
else if (Constant *C = ConstantFoldInstruction(Inst, BI->getContext())) {
else if (Constant *C = ConstantFoldInstruction(Inst,
Inst->getContext())) {
Inst->replaceAllUsesWith(C);
Inst->eraseFromParent();
}

14
llvm/test/Transforms/TailDup/2009-07-31-phicrash.ll Normal file
View File

@ -0,0 +1,14 @@
; RUN: llvm-as < %s | opt -tailduplicate -disable-output
; PR4662
define void @a() {
BB:
br label %BB6
BB6:
%tmp9 = phi i64 [ 0, %BB ], [ 5, %BB34 ]
br label %BB34
BB34:
br label %BB6
}