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Switch x86 to using AltOrders instead of MethodBodies.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133325 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2011-06-18 01:14:43 +00:00
parent a566ec94e6
commit e8c38ca3b5
1 changed files with 6 additions and 67 deletions
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73
lib/Target/X86/X86RegisterInfo.td
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@ -281,44 +281,9 @@ let Namespace = "X86" in {
def GR8 : RegisterClass<"X86", [i8], 8,
(add AL, CL, DL, AH, CH, DH, BL, BH, SIL, DIL, BPL, SPL,
R8B, R9B, R10B, R11B, R14B, R15B, R12B, R13B)> {
let MethodProtos = [{
iterator allocation_order_begin(const MachineFunction &MF) const;
iterator allocation_order_end(const MachineFunction &MF) const;
}];
let MethodBodies = [{
static const unsigned X86_GR8_AO_64[] = {
X86::AL, X86::CL, X86::DL, X86::SIL, X86::DIL,
X86::R8B, X86::R9B, X86::R10B, X86::R11B,
X86::BL, X86::R14B, X86::R15B, X86::R12B, X86::R13B, X86::BPL
};
GR8Class::iterator
GR8Class::allocation_order_begin(const MachineFunction &MF) const {
const TargetMachine &TM = MF.getTarget();
const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
if (Subtarget.is64Bit())
return X86_GR8_AO_64;
else
return begin();
}
GR8Class::iterator
GR8Class::allocation_order_end(const MachineFunction &MF) const {
const TargetMachine &TM = MF.getTarget();
const TargetFrameLowering *TFI = TM.getFrameLowering();
const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
const X86MachineFunctionInfo *MFI = MF.getInfo<X86MachineFunctionInfo>();
// Does the function dedicate RBP / EBP to being a frame ptr?
if (!Subtarget.is64Bit())
// In 32-mode, none of the 8-bit registers aliases EBP or ESP.
return begin() + 8;
else if (TFI->hasFP(MF) || MFI->getReserveFP())
// If so, don't allocate SPL or BPL.
return array_endof(X86_GR8_AO_64) - 1;
else
// If not, just don't allocate SPL.
return array_endof(X86_GR8_AO_64);
}
let AltOrders = [(sub GR8, AH, BH, CH, DH)];
let AltOrderSelect = [{
return MF.getTarget().getSubtarget<X86Subtarget>().is64Bit();
}];
}
@ -394,35 +359,9 @@ def GR64_TCW64 : RegisterClass<"X86", [i64], 64, (add RAX, RCX, RDX,
// GR8_NOREX - GR8 registers which do not require a REX prefix.
def GR8_NOREX : RegisterClass<"X86", [i8], 8,
(add AL, CL, DL, AH, CH, DH, BL, BH)> {
let MethodProtos = [{
iterator allocation_order_begin(const MachineFunction &MF) const;
iterator allocation_order_end(const MachineFunction &MF) const;
}];
let MethodBodies = [{
// In 64-bit mode, it's not safe to blindly allocate H registers.
static const unsigned X86_GR8_NOREX_AO_64[] = {
X86::AL, X86::CL, X86::DL, X86::BL
};
GR8_NOREXClass::iterator
GR8_NOREXClass::allocation_order_begin(const MachineFunction &MF) const {
const TargetMachine &TM = MF.getTarget();
const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
if (Subtarget.is64Bit())
return X86_GR8_NOREX_AO_64;
else
return begin();
}
GR8_NOREXClass::iterator
GR8_NOREXClass::allocation_order_end(const MachineFunction &MF) const {
const TargetMachine &TM = MF.getTarget();
const X86Subtarget &Subtarget = TM.getSubtarget<X86Subtarget>();
if (Subtarget.is64Bit())
return array_endof(X86_GR8_NOREX_AO_64);
else
return end();
}
let AltOrders = [(sub GR8_NOREX, AH, BH, CH, DH)];
let AltOrderSelect = [{
return MF.getTarget().getSubtarget<X86Subtarget>().is64Bit();
}];
}
// GR16_NOREX - GR16 registers which do not require a REX prefix.