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Add support for one argument OneArgFP instructions

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11094 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-02-03 07:27:34 +00:00
parent 4e7854407c
commit b97046ae4f
2 changed files with 8 additions and 6 deletions
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7
lib/Target/X86/FloatingPoint.cpp
View File

@ -383,10 +383,11 @@ void FPS::handleZeroArgFP(MachineBasicBlock::iterator &I) {
///
void FPS::handleOneArgFP(MachineBasicBlock::iterator &I) {
MachineInstr *MI = *I;
assert(MI->getNumOperands() == 5 && "Can only handle fst* instructions!");
assert((MI->getNumOperands() == 5 || MI->getNumOperands() == 1) &&
"Can only handle fst* & ftst instructions!");
// Is this the last use of the source register?
unsigned Reg = getFPReg(MI->getOperand(4));
unsigned Reg = getFPReg(MI->getOperand(MI->getNumOperands()-1));
bool KillsSrc = false;
for (LiveVariables::killed_iterator KI = LV->killed_begin(MI),
E = LV->killed_end(MI); KI != E; ++KI)
@ -403,7 +404,7 @@ void FPS::handleOneArgFP(MachineBasicBlock::iterator &I) {
} else {
moveToTop(Reg, I); // Move to the top of the stack...
}
MI->RemoveOperand(4); // Remove explicit ST(0) operand
MI->RemoveOperand(MI->getNumOperands()-1); // Remove explicit ST(0) operand
if (MI->getOpcode() == X86::FSTPr80 || MI->getOpcode() == X86::FISTPr64) {
assert(StackTop > 0 && "Stack empty??");

7
lib/Target/X86/X86FloatingPoint.cpp
View File

@ -383,10 +383,11 @@ void FPS::handleZeroArgFP(MachineBasicBlock::iterator &I) {
///
void FPS::handleOneArgFP(MachineBasicBlock::iterator &I) {
MachineInstr *MI = *I;
assert(MI->getNumOperands() == 5 && "Can only handle fst* instructions!");
assert((MI->getNumOperands() == 5 || MI->getNumOperands() == 1) &&
"Can only handle fst* & ftst instructions!");
// Is this the last use of the source register?
unsigned Reg = getFPReg(MI->getOperand(4));
unsigned Reg = getFPReg(MI->getOperand(MI->getNumOperands()-1));
bool KillsSrc = false;
for (LiveVariables::killed_iterator KI = LV->killed_begin(MI),
E = LV->killed_end(MI); KI != E; ++KI)
@ -403,7 +404,7 @@ void FPS::handleOneArgFP(MachineBasicBlock::iterator &I) {
} else {
moveToTop(Reg, I); // Move to the top of the stack...
}
MI->RemoveOperand(4); // Remove explicit ST(0) operand
MI->RemoveOperand(MI->getNumOperands()-1); // Remove explicit ST(0) operand
if (MI->getOpcode() == X86::FSTPr80 || MI->getOpcode() == X86::FISTPr64) {
assert(StackTop > 0 && "Stack empty??");