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doxygenify some comments.

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llvm-svn: 108625
This commit is contained in:
Chris Lattner 2010-07-17 17:40:51 +00:00
parent efd94e6909
commit dac9788e6b
1 changed files with 19 additions and 19 deletions
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38
lib/Target/X86/X86FloatingPoint.cpp
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@ -149,20 +149,20 @@ namespace {
return StackTop == 0;
}
// getSlot - Return the stack slot number a particular register number is
// in.
/// getSlot - Return the stack slot number a particular register number is
/// in.
unsigned getSlot(unsigned RegNo) const {
assert(RegNo < 8 && "Regno out of range!");
return RegMap[RegNo];
}
// isLive - Is RegNo currently live in the stack?
/// isLive - Is RegNo currently live in the stack?
bool isLive(unsigned RegNo) const {
unsigned Slot = getSlot(RegNo);
return Slot < StackTop && Stack[Slot] == RegNo;
}
// getScratchReg - Return an FP register that is not currently in use.
/// getScratchReg - Return an FP register that is not currently in use.
unsigned getScratchReg() {
for (int i = 7; i >= 0; --i)
if (!isLive(i))
@ -170,14 +170,14 @@ namespace {
llvm_unreachable("Ran out of scratch FP registers");
}
// getStackEntry - Return the X86::FP<n> register in register ST(i).
/// getStackEntry - Return the X86::FP<n> register in register ST(i).
unsigned getStackEntry(unsigned STi) const {
assert(STi < StackTop && "Access past stack top!");
return Stack[StackTop-1-STi];
}
// getSTReg - Return the X86::ST(i) register which contains the specified
// FP<RegNo> register.
/// getSTReg - Return the X86::ST(i) register which contains the specified
/// FP<RegNo> register.
unsigned getSTReg(unsigned RegNo) const {
return StackTop - 1 - getSlot(RegNo) + llvm::X86::ST0;
}
@ -218,27 +218,27 @@ namespace {
BuildMI(*MBB, I, dl, TII->get(X86::LD_Frr)).addReg(STReg);
}
// popStackAfter - Pop the current value off of the top of the FP stack
// after the specified instruction.
/// popStackAfter - Pop the current value off of the top of the FP stack
/// after the specified instruction.
void popStackAfter(MachineBasicBlock::iterator &I);
// freeStackSlotAfter - Free the specified register from the register stack,
// so that it is no longer in a register. If the register is currently at
// the top of the stack, we just pop the current instruction, otherwise we
// store the current top-of-stack into the specified slot, then pop the top
// of stack.
/// freeStackSlotAfter - Free the specified register from the register
/// stack, so that it is no longer in a register. If the register is
/// currently at the top of the stack, we just pop the current instruction,
/// otherwise we store the current top-of-stack into the specified slot,
/// then pop the top of stack.
void freeStackSlotAfter(MachineBasicBlock::iterator &I, unsigned Reg);
// freeStackSlotBefore - Just the pop, no folding. Return the inserted
// instruction.
/// freeStackSlotBefore - Just the pop, no folding. Return the inserted
/// instruction.
MachineBasicBlock::iterator
freeStackSlotBefore(MachineBasicBlock::iterator I, unsigned FPRegNo);
// Adjust the live registers to be the set in Mask.
/// Adjust the live registers to be the set in Mask.
void adjustLiveRegs(unsigned Mask, MachineBasicBlock::iterator I);
// Shuffle the top FixCount stack entries susch that FP reg FixStack[0] is
//st(0), FP reg FixStack[1] is st(1) etc.
/// Shuffle the top FixCount stack entries susch that FP reg FixStack[0] is
/// st(0), FP reg FixStack[1] is st(1) etc.
void shuffleStackTop(const unsigned char *FixStack, unsigned FixCount,
MachineBasicBlock::iterator I);