[llvm-commits] [llvm] r49544 - /llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp
Evan Cheng
evan.cheng at apple.com
Fri Apr 11 10:55:47 PDT 2008
Author: evancheng
Date: Fri Apr 11 12:55:47 2008
New Revision: 49544
URL: http://llvm.org/viewvc/llvm-project?rev=49544&view=rev
Log:
Do not add empty live intervals to handled_. They should never be undone for backtracking.
Modified:
llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp
Modified: llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp?rev=49544&r1=49543&r2=49544&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp (original)
+++ llvm/trunk/lib/CodeGen/RegAllocLinearScan.cpp Fri Apr 11 12:55:47 2008
@@ -519,7 +519,6 @@
DOUT << tri_->getName(physReg) << '\n';
// Note the register is not really in use.
vrm_->assignVirt2Phys(cur->reg, physReg);
- handled_.push_back(cur);
return;
}
@@ -539,7 +538,7 @@
if (vni->def && vni->def != ~1U && vni->def != ~0U) {
MachineInstr *CopyMI = li_->getInstructionFromIndex(vni->def);
unsigned SrcReg, DstReg;
- if (tii_->isMoveInstr(*CopyMI, SrcReg, DstReg)) {
+ if (CopyMI && tii_->isMoveInstr(*CopyMI, SrcReg, DstReg)) {
unsigned Reg = 0;
if (TargetRegisterInfo::isPhysicalRegister(SrcReg))
Reg = SrcReg;
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