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| author | Ruchira Sasanka <sasanka@students.uiuc.edu> | 2001-10-15 16:58:50 +0000 |
|---|---|---|
| committer | Ruchira Sasanka <sasanka@students.uiuc.edu> | 2001-10-15 16:58:50 +0000 |
| commit | b8354a8e4f2cd93fa5f82a77b300f1d327354816 (patch) | |
| tree | f737a0ecdf03e232dfd2cf2b48cd0deeed252fe9 /lib/Analysis | |
| parent | a90e77061d52076d9edf09b2f1ae42db04ff14d4 (diff) | |
| download | external_llvm-b8354a8e4f2cd93fa5f82a77b300f1d327354816.zip external_llvm-b8354a8e4f2cd93fa5f82a77b300f1d327354816.tar.gz external_llvm-b8354a8e4f2cd93fa5f82a77b300f1d327354816.tar.bz2 | |
--added support for implicit operands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@832 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis')
| -rw-r--r-- | lib/Analysis/LiveVar/LiveVarSet.cpp | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/lib/Analysis/LiveVar/LiveVarSet.cpp b/lib/Analysis/LiveVar/LiveVarSet.cpp index 07dc128..1ca65f0 100644 --- a/lib/Analysis/LiveVar/LiveVarSet.cpp +++ b/lib/Analysis/LiveVar/LiveVarSet.cpp @@ -14,27 +14,34 @@ void LiveVarSet::applyTranferFuncForMInst(const MachineInstr *const MInst) for( MachineInstr::val_op_const_iterator OpI(MInst); !OpI.done() ; OpI++) { - if( OpI.isDef() ) { // kill only if this operand is a def + if( OpI.isDef() ) // kill only if this operand is a def remove(*OpI); // this definition kills any uses - } + } + // do for implicit operands as well + for( unsigned i=0; i < MInst->getNumImplicitRefs(); ++i) { + if( MInst->implicitRefIsDefined(i) ) + remove( MInst->getImplicitRef(i) ); } + for( MachineInstr::val_op_const_iterator OpI(MInst); !OpI.done() ; OpI++) { if ( ((*OpI)->getType())->isLabelType()) continue; // don't process labels - - if( ! OpI.isDef() ) { // add only if this operand is a use + + if( ! OpI.isDef() ) // add only if this operand is a use add( *OpI ); // An operand is a use - so add to use set - } } -} - - - + // do for implicit operands as well + for( unsigned i=0; i < MInst->getNumImplicitRefs(); ++i) { + if( ! MInst->implicitRefIsDefined(i) ) + add( MInst->getImplicitRef(i) ); + } +} + #if 0 void LiveVarSet::applyTranferFuncForInst(const Instruction *const Inst) |