6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-10 04:33:40 +00:00
Code Issues Projects Releases Wiki Activity

when previous scratch register is killed, flag the value as no longer tracking

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83653 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2009-10-09 17:33:33 +00:00
parent e8e72be33a
commit 71c8dc9b20
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
lib/CodeGen/PrologEpilogInserter.cpp
View File

@ -797,10 +797,13 @@ void PEI::scavengeFrameVirtualRegs(MachineFunction &Fn) {
if (Reg == PrevScratchReg) {
if (MO.isUse()) {
// Two-address operands implicitly kill
if (MO.isKill() || MI->isRegTiedToDefOperand(i))
if (MO.isKill() || MI->isRegTiedToDefOperand(i)) {
havePrevValue = false;
PrevScratchReg = 0;
}
} else {
assert (MO.isDef());
havePrevValue = false;
PrevScratchReg = 0;
}
}