diff options
Diffstat (limited to 'lib/CodeGen/RegAlloc/LiveRangeInfo.cpp')
| -rw-r--r-- | lib/CodeGen/RegAlloc/LiveRangeInfo.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp b/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp index a4c3aabe10..c07227539a 100644 --- a/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp +++ b/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp @@ -253,7 +253,7 @@ void LiveRangeInfo::coalesceLRs() for each machine instruction (inst) for each definition (def) in inst for each operand (op) of inst that is a use - if the def and op are of the same register class + if the def and op are of the same register type if the def and op do not interfere //i.e., not simultaneously live if (degree(LR of def) + degree(LR of op)) <= # avail regs if both LRs do not have suggested colors @@ -312,9 +312,12 @@ void LiveRangeInfo::coalesceLRs() if( LROfUse == LROfDef) // nothing to merge if they are same continue; - RegClass *const RCOfUse = LROfUse->getRegClass(); + //RegClass *const RCOfUse = LROfUse->getRegClass(); + //if( RCOfDef == RCOfUse ) { // if the reg classes are the same - if( RCOfDef == RCOfUse ) { // if the reg classes are the same + if( MRI.getRegType(LROfDef) == MRI.getRegType(LROfUse) ) { + + // If the two RegTypes are the same if( ! RCOfDef->getInterference(LROfDef, LROfUse) ) { |