maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Add support for one argument OneArgFP instructions 

llvm-svn: 11094
This commit is contained in:
Chris Lattner 2004-02-03 07:27:34 +00:00
parent 3d100ef0ca
commit 8161306139
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
llvm/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??");