Changes in directory llvm/lib/CodeGen:
VirtRegMap.cpp updated: 1.98 -> 1.99
---
Log message:
Reuse extends the liveness of a register. Transfer the kill to the operand that
reuse it.
---
Diffs of the changes: (+6 -1)
VirtRegMap.cpp | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletion(-)
Index: llvm/lib/CodeGen/VirtRegMap.cpp
diff -u llvm/lib/CodeGen/VirtRegMap.cpp:1.98
llvm/lib/CodeGen/VirtRegMap.cpp:1.99
--- llvm/lib/CodeGen/VirtRegMap.cpp:1.98 Thu Feb 22 19:13:26 2007
+++ llvm/lib/CodeGen/VirtRegMap.cpp Fri Feb 23 15:47:50 2007
@@ -665,8 +665,13 @@
// Extend the live range of the MI that last kill the register if
// necessary.
MachineOperand *MOK = SSMI->findRegisterUseOperand(PhysReg, true);
- if (MOK)
+ if (MOK) {
MOK->unsetIsKill();
+ if (ti == -1)
+ // Unless it's the use of a two-address code, transfer the kill
+ // of the reused register to this use.
+ MI.getOperand(i).setIsKill();
+ }
// The only technical detail we have is that we don't know that
// PhysReg won't be clobbered by a reloaded stack slot that occurs
_______________________________________________
llvm-commits mailing list
llvm-commits@cs.uiuc.edu
http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
