6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-01 02:33:44 +00:00
Code Issues Projects Releases Wiki Activity

Only run CoalesceExtSubRegs when we can expect LiveIntervalAnalysis to clean up

Browse Source 
the inserted INSERT_SUBREGs after us.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106345 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2010-06-18 23:10:20 +00:00
parent 86050dc8cc
commit fe181f4848
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
lib/CodeGen/TwoAddressInstructionPass.cpp
View File

@ -1397,8 +1397,11 @@ bool TwoAddressInstructionPass::EliminateRegSequences() {
MI->eraseFromParent(); MI->eraseFromParent();
} }
// Try coalescing some EXTRACT_SUBREG instructions. // Try coalescing some EXTRACT_SUBREG instructions. This can create
CoalesceExtSubRegs(RealSrcs, DstReg); // INSERT_SUBREG instructions that must have <undef> flags added by
// LiveIntervalAnalysis, so only run it when LiveVariables is available.
if (LV)
CoalesceExtSubRegs(RealSrcs, DstReg);
} }
RegSequences.clear(); RegSequences.clear();