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

After PostRA scheduling, don't set kill flags on undef operands. 

This should fix the ATOM buildbot failing on break-avx-dep.ll.

llvm-svn: 192824
This commit is contained in:
Andrew Trick 2013-10-16 18:30:23 +00:00
parent bab2afbfbe
commit 811a2ef96e
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
llvm/lib/CodeGen/PostRASchedulerList.cpp
View File

@ -515,11 +515,11 @@ void SchedulePostRATDList::FixupKills(MachineBasicBlock *MBB) {
// Examine all used registers and set/clear kill flag. When a // Examine all used registers and set/clear kill flag. When a
// register is used multiple times we only set the kill flag on // register is used multiple times we only set the kill flag on
// the first use. // the first use. Don't set kill flags on undef operands.
killedRegs.reset(); killedRegs.reset();
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
MachineOperand &MO = MI->getOperand(i); MachineOperand &MO = MI->getOperand(i);
if (!MO.isReg() || !MO.isUse()) continue; if (!MO.isReg() || !MO.isUse() || MO.isUndef()) continue;
unsigned Reg = MO.getReg(); unsigned Reg = MO.getReg();
if ((Reg == 0) || MRI.isReserved(Reg)) continue; if ((Reg == 0) || MRI.isReserved(Reg)) continue;