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Coalesing bug fix - now checks for the same regType instead of the same

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regClass since FP class has two reg Types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1236 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ruchira Sasanka 2001-11-10 00:20:24 +00:00
parent ad1400924d
commit efaf9be8a4
2 changed files with 12 additions and 6 deletions
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9
lib/CodeGen/RegAlloc/LiveRangeInfo.cpp
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@ -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) ) {

9
lib/Target/SparcV9/RegAlloc/LiveRangeInfo.cpp
View File

@ -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) ) {