6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2026-04-21 23:17:16 +00:00
Code Issues Projects Releases Wiki Activity

- Change MachineInstr::findRegisterDefOperandIdx so it can also look for defs

Browse Source 
that are aliases of the specified register.
- Rename modifiesRegister to definesRegister since it's looking a def of the
specific register or one of its super-registers. It's not looking for def of a
sub-register or alias that could change the specified register.
- Added modifiesRegister to look for defs of aliases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104377 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2010-05-21 20:53:24 +00:00
parent 18b2c9d3bf
commit 1015ba7018
8 changed files with 43 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files
lib/CodeGen/PostRASchedulerList.cpp
+2 -2
View File
@@ -197,13 +197,13 @@ static bool isSchedulingBoundary(const MachineInstr *MI,
if (MI->getDesc().isTerminator() || MI->isLabel())
return true;
// Don't attempt to schedule around any instruction that modifies
// Don't attempt to schedule around any instruction that defines
// a stack-oriented pointer, as it's unlikely to be profitable. This
// saves compile time, because it doesn't require every single
// stack slot reference to depend on the instruction that does the
// modification.
const TargetLowering &TLI = *MF.getTarget().getTargetLowering();
if (MI->modifiesRegister(TLI.getStackPointerRegisterToSaveRestore()))
if (MI->definesRegister(TLI.getStackPointerRegisterToSaveRestore()))
return true;
return false;