Kill / dead info has been moved to MI's.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31764 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86FloatingPoint.cpp b/lib/Target/X86/X86FloatingPoint.cpp
index 0b4a19b..c0e46b2 100644
--- a/lib/Target/X86/X86FloatingPoint.cpp
+++ b/lib/Target/X86/X86FloatingPoint.cpp
@@ -40,6 +40,7 @@
#include "llvm/Support/Debug.h"
#include "llvm/Support/Compiler.h"
#include "llvm/ADT/DepthFirstIterator.h"
+#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/STLExtras.h"
#include <algorithm>
@@ -213,20 +214,12 @@
// Get dead variables list now because the MI pointer may be deleted as part
// of processing!
- LiveVariables::killed_iterator IB, IE;
- tie(IB, IE) = LV->dead_range(MI);
-
- DEBUG(
- const MRegisterInfo *MRI = MF.getTarget().getRegisterInfo();
- LiveVariables::killed_iterator I = LV->killed_begin(MI);
- LiveVariables::killed_iterator E = LV->killed_end(MI);
- if (I != E) {
- std::cerr << "Killed Operands:";
- for (; I != E; ++I)
- std::cerr << " %" << MRI->getName(*I);
- std::cerr << "\n";
- }
- );
+ SmallVector<unsigned, 8> DeadRegs;
+ for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
+ const MachineOperand &MO = MI->getOperand(i);
+ if (MO.isReg() && MO.isDead())
+ DeadRegs.push_back(MO.getReg());
+ }
switch (Flags & X86II::FPTypeMask) {
case X86II::ZeroArgFP: handleZeroArgFP(I); break;
@@ -241,8 +234,8 @@
// Check to see if any of the values defined by this instruction are dead
// after definition. If so, pop them.
- for (; IB != IE; ++IB) {
- unsigned Reg = *IB;
+ for (unsigned i = 0, e = DeadRegs.size(); i != e; ++i) {
+ unsigned Reg = DeadRegs[i];
if (Reg >= X86::FP0 && Reg <= X86::FP6) {
DEBUG(std::cerr << "Register FP#" << Reg-X86::FP0 << " is dead!\n");
freeStackSlotAfter(I, Reg-X86::FP0);
@@ -762,6 +755,7 @@
unsigned Op0 = getFPReg(MI->getOperand(0));
unsigned Op1 = getFPReg(MI->getOperand(2));
+ bool KillsOp1 = LV->KillsRegister(MI, X86::FP0+Op1);
// The first operand *must* be on the top of the stack.
moveToTop(Op0, I);
@@ -773,9 +767,8 @@
MI->getOperand(0).setReg(getSTReg(Op1));
MI->setOpcode(getConcreteOpcode(MI->getOpcode()));
-
// If we kill the second operand, make sure to pop it from the stack.
- if (Op0 != Op1 && LV->KillsRegister(MI, X86::FP0+Op1)) {
+ if (Op0 != Op1 && KillsOp1) {
// Get this value off of the register stack.
freeStackSlotAfter(I, Op1);
}