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Ignore debug values when performing MachineVerifier liveness checks. Fixes 

PR8822.

llvm-svn: 122207
This commit is contained in:
Cameron Zwarich 2010-12-20 00:08:10 +00:00
parent 1064992c84
commit 1b67d6c565
1 changed files with 3 additions and 1 deletions
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4
llvm/lib/CodeGen/MachineVerifier.cpp
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@ -587,7 +587,9 @@ MachineVerifier::visitMachineOperand(const MachineOperand *MO, unsigned MONum) {
return;
// Check Live Variables.
if (MO->isUndef()) {
if (MI->isDebugValue()) {
// Liveness checks are not valid for debug values.
} else if (MO->isUndef()) {
// An <undef> doesn't refer to any register, so just skip it.
} else if (MO->isUse()) {
regsLiveInButUnused.erase(Reg);