}
-/// handleOneArgFPRW - fchs - ST(0) = -ST(0)
+/// handleOneArgFPRW: Handle instructions that read from the top of stack and
+/// replace the value with a newly computed value. These instructions may have
+/// non-fp operands after their FP operands.
+///
+/// Examples:
+/// R1 = fchs R2
+/// R1 = fadd R2, [mem]
///
void FPS::handleOneArgFPRW(MachineBasicBlock::iterator &I) {
MachineInstr *MI = I;
- assert(MI->getNumOperands() == 2 && "Can only handle fst* instructions!");
+ assert(MI->getNumOperands() >= 2 && "FPRW instructions must have 2 ops!!");
// Is this the last use of the source register?
unsigned Reg = getFPReg(MI->getOperand(1));
}
-/// handleOneArgFPRW - fchs - ST(0) = -ST(0)
+/// handleOneArgFPRW: Handle instructions that read from the top of stack and
+/// replace the value with a newly computed value. These instructions may have
+/// non-fp operands after their FP operands.
+///
+/// Examples:
+/// R1 = fchs R2
+/// R1 = fadd R2, [mem]
///
void FPS::handleOneArgFPRW(MachineBasicBlock::iterator &I) {
MachineInstr *MI = I;
- assert(MI->getNumOperands() == 2 && "Can only handle fst* instructions!");
+ assert(MI->getNumOperands() >= 2 && "FPRW instructions must have 2 ops!!");
// Is this the last use of the source register?
unsigned Reg = getFPReg(MI->getOperand(1));