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| author | Pete Cooper <peter_cooper@apple.com> | 2012-07-19 23:40:38 +0000 |
|---|---|---|
| committer | Pete Cooper <peter_cooper@apple.com> | 2012-07-19 23:40:38 +0000 |
| commit | dcf94db67729814dc8c2fcacaeebd03c0a228116 (patch) | |
| tree | 9caef1e5da1f91c19a2181aafed729f2530cc324 /llvm/lib | |
| parent | 3136cf9d5b3dacf053c99cebe391c5106f94b308 (diff) | |
| download | bcm5719-llvm-dcf94db67729814dc8c2fcacaeebd03c0a228116.tar.gz bcm5719-llvm-dcf94db67729814dc8c2fcacaeebd03c0a228116.zip | |
Fix crash in machine verifier when trying to print the def of a register which has no def
llvm-svn: 160531
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/MachineVerifier.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachineVerifier.cpp b/llvm/lib/CodeGen/MachineVerifier.cpp index fca051effaf..d8dece66d88 100644 --- a/llvm/lib/CodeGen/MachineVerifier.cpp +++ b/llvm/lib/CodeGen/MachineVerifier.cpp @@ -837,6 +837,8 @@ void MachineVerifier::checkLiveness(const MachineOperand *MO, unsigned MONum) { // Reserved registers may be used even when 'dead'. if (!isReserved(Reg)) report("Using an undefined physical register", MO, MONum); + } else if (MRI->def_empty(Reg)) { + report("Reading virtual register without a def", MO, MONum); } else { BBInfo &MInfo = MBBInfoMap[MI->getParent()]; // We don't know which virtual registers are live in, so only complain |
