6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-08-15 06:29:05 +00:00
Code Issues Projects Releases Wiki Activity

When an instruction moves, make sure to update the VarInfo::Kills list as

Browse Source 
well as all of teh other stuff in livevar. This fixes the compiler crash
on fourinarow last night.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19695 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2005-01-19 17:09:15 +00:00
parent a76f04828a
commit d45be36965
1 changed files with 10 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
lib/CodeGen/LiveVariables.cpp
View File

@@ -302,12 +302,19 @@ void LiveVariables::instructionChanged(MachineInstr *OldMI,
// the instruction. // the instruction.
for (unsigned i = 0, e = OldMI->getNumOperands(); i != e; ++i) { for (unsigned i = 0, e = OldMI->getNumOperands(); i != e; ++i) {
MachineOperand &MO = OldMI->getOperand(i); MachineOperand &MO = OldMI->getOperand(i);
if (MO.isRegister() && MO.isDef() && MO.getReg() && if (MO.isRegister() && MO.getReg() &&
MRegisterInfo::isVirtualRegister(MO.getReg())) { MRegisterInfo::isVirtualRegister(MO.getReg())) {
unsigned Reg = MO.getReg(); unsigned Reg = MO.getReg();
VarInfo &VI = getVarInfo(Reg); VarInfo &VI = getVarInfo(Reg);
if (MO.isDef()) {
// Update the defining instruction.
if (VI.DefInst == OldMI) if (VI.DefInst == OldMI)
VI.DefInst = NewMI; VI.DefInst = NewMI;
} else if (MO.isUse()) {
// If this is a kill of the value, update the VI kills list.
if (VI.removeKill(OldMI))
VI.Kills.push_back(NewMI); // Yes, there was a kill of it
}
} }
} }