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Move some knowledge about registers out of the code emitter into the register info.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27770 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-04-17 21:07:20 +00:00
parent f7d2372b74
commit 369503f841
3 changed files with 47 additions and 41 deletions
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42
lib/Target/PowerPC/PPCCodeEmitter.cpp
View File

@ -141,52 +141,12 @@ void PPCCodeEmitter::emitBasicBlock(MachineBasicBlock &MBB) {
}
}
static unsigned enumRegToMachineReg(unsigned enumReg) {
switch (enumReg) {
case PPC::R0 : case PPC::F0 : case PPC::V0 : case PPC::CR0: return 0;
case PPC::R1 : case PPC::F1 : case PPC::V1 : case PPC::CR1: return 1;
case PPC::R2 : case PPC::F2 : case PPC::V2 : case PPC::CR2: return 2;
case PPC::R3 : case PPC::F3 : case PPC::V3 : case PPC::CR3: return 3;
case PPC::R4 : case PPC::F4 : case PPC::V4 : case PPC::CR4: return 4;
case PPC::R5 : case PPC::F5 : case PPC::V5 : case PPC::CR5: return 5;
case PPC::R6 : case PPC::F6 : case PPC::V6 : case PPC::CR6: return 6;
case PPC::R7 : case PPC::F7 : case PPC::V7 : case PPC::CR7: return 7;
case PPC::R8 : case PPC::F8 : case PPC::V8 : return 8;
case PPC::R9 : case PPC::F9 : case PPC::V9 : return 9;
case PPC::R10: case PPC::F10: case PPC::V10: return 10;
case PPC::R11: case PPC::F11: case PPC::V11: return 11;
case PPC::R12: case PPC::F12: case PPC::V12: return 12;
case PPC::R13: case PPC::F13: case PPC::V13: return 13;
case PPC::R14: case PPC::F14: case PPC::V14: return 14;
case PPC::R15: case PPC::F15: case PPC::V15: return 15;
case PPC::R16: case PPC::F16: case PPC::V16: return 16;
case PPC::R17: case PPC::F17: case PPC::V17: return 17;
case PPC::R18: case PPC::F18: case PPC::V18: return 18;
case PPC::R19: case PPC::F19: case PPC::V19: return 19;
case PPC::R20: case PPC::F20: case PPC::V20: return 20;
case PPC::R21: case PPC::F21: case PPC::V21: return 21;
case PPC::R22: case PPC::F22: case PPC::V22: return 22;
case PPC::R23: case PPC::F23: case PPC::V23: return 23;
case PPC::R24: case PPC::F24: case PPC::V24: return 24;
case PPC::R25: case PPC::F25: case PPC::V25: return 25;
case PPC::R26: case PPC::F26: case PPC::V26: return 26;
case PPC::R27: case PPC::F27: case PPC::V27: return 27;
case PPC::R28: case PPC::F28: case PPC::V28: return 28;
case PPC::R29: case PPC::F29: case PPC::V29: return 29;
case PPC::R30: case PPC::F30: case PPC::V30: return 30;
case PPC::R31: case PPC::F31: case PPC::V31: return 31;
default:
std::cerr << "Unhandled reg in enumRegToRealReg!\n";
abort();
}
}
int PPCCodeEmitter::getMachineOpValue(MachineInstr &MI, MachineOperand &MO) {
int rv = 0; // Return value; defaults to 0 for unhandled cases
// or things that get fixed up later by the JIT.
if (MO.isRegister()) {
rv = enumRegToMachineReg(MO.getReg());
rv = PPCRegisterInfo::getRegisterNumbering(MO.getReg());
// Special encoding for MTCRF and MFOCRF, which uses a bit mask for the
// register, not the register number directly.

42
lib/Target/PowerPC/PPCRegisterInfo.cpp
View File

@ -35,6 +35,48 @@
#include <iostream>
using namespace llvm;
/// getRegisterNumbering - Given the enum value for some register, e.g.
/// PPC::F14, return the number that it corresponds to (e.g. 14).
unsigned PPCRegisterInfo::getRegisterNumbering(unsigned RegEnum) {
switch (RegEnum) {
case PPC::R0 : case PPC::F0 : case PPC::V0 : case PPC::CR0: return 0;
case PPC::R1 : case PPC::F1 : case PPC::V1 : case PPC::CR1: return 1;
case PPC::R2 : case PPC::F2 : case PPC::V2 : case PPC::CR2: return 2;
case PPC::R3 : case PPC::F3 : case PPC::V3 : case PPC::CR3: return 3;
case PPC::R4 : case PPC::F4 : case PPC::V4 : case PPC::CR4: return 4;
case PPC::R5 : case PPC::F5 : case PPC::V5 : case PPC::CR5: return 5;
case PPC::R6 : case PPC::F6 : case PPC::V6 : case PPC::CR6: return 6;
case PPC::R7 : case PPC::F7 : case PPC::V7 : case PPC::CR7: return 7;
case PPC::R8 : case PPC::F8 : case PPC::V8 : return 8;
case PPC::R9 : case PPC::F9 : case PPC::V9 : return 9;
case PPC::R10: case PPC::F10: case PPC::V10: return 10;
case PPC::R11: case PPC::F11: case PPC::V11: return 11;
case PPC::R12: case PPC::F12: case PPC::V12: return 12;
case PPC::R13: case PPC::F13: case PPC::V13: return 13;
case PPC::R14: case PPC::F14: case PPC::V14: return 14;
case PPC::R15: case PPC::F15: case PPC::V15: return 15;
case PPC::R16: case PPC::F16: case PPC::V16: return 16;
case PPC::R17: case PPC::F17: case PPC::V17: return 17;
case PPC::R18: case PPC::F18: case PPC::V18: return 18;
case PPC::R19: case PPC::F19: case PPC::V19: return 19;
case PPC::R20: case PPC::F20: case PPC::V20: return 20;
case PPC::R21: case PPC::F21: case PPC::V21: return 21;
case PPC::R22: case PPC::F22: case PPC::V22: return 22;
case PPC::R23: case PPC::F23: case PPC::V23: return 23;
case PPC::R24: case PPC::F24: case PPC::V24: return 24;
case PPC::R25: case PPC::F25: case PPC::V25: return 25;
case PPC::R26: case PPC::F26: case PPC::V26: return 26;
case PPC::R27: case PPC::F27: case PPC::V27: return 27;
case PPC::R28: case PPC::F28: case PPC::V28: return 28;
case PPC::R29: case PPC::F29: case PPC::V29: return 29;
case PPC::R30: case PPC::F30: case PPC::V30: return 30;
case PPC::R31: case PPC::F31: case PPC::V31: return 31;
default:
std::cerr << "Unhandled reg in PPCRegisterInfo::getRegisterNumbering!\n";
abort();
}
}
PPCRegisterInfo::PPCRegisterInfo()
: PPCGenRegisterInfo(PPC::ADJCALLSTACKDOWN, PPC::ADJCALLSTACKUP) {
ImmToIdxMap[PPC::LD] = PPC::LDX; ImmToIdxMap[PPC::STD] = PPC::STDX;

4
lib/Target/PowerPC/PPCRegisterInfo.h
View File

@ -26,6 +26,10 @@ class PPCRegisterInfo : public PPCGenRegisterInfo {
std::map<unsigned, unsigned> ImmToIdxMap;
public:
PPCRegisterInfo();
/// getRegisterNumbering - Given the enum value for some register, e.g.
/// PPC::F14, return the number that it corresponds to (e.g. 14).
static unsigned getRegisterNumbering(unsigned RegEnum);
/// Code Generation virtual methods...
void storeRegToStackSlot(MachineBasicBlock &MBB,