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Implement HexagonInstrInfo::analyzeCompare.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174901 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Krzysztof Parzyszek 2013-02-11 20:04:29 +00:00
parent 86494d7991
commit ce55d91ec9
2 changed files with 86 additions and 0 deletions
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82
lib/Target/Hexagon/HexagonInstrInfo.cpp
View File

@ -305,6 +305,88 @@ unsigned HexagonInstrInfo::RemoveBranch(MachineBasicBlock &MBB) const {
}
/// \brief For a comparison instruction, return the source registers in
/// \p SrcReg and \p SrcReg2 if having two register operands, and the value it
/// compares against in CmpValue. Return true if the comparison instruction
/// can be analyzed.
bool HexagonInstrInfo::analyzeCompare(const MachineInstr *MI,
unsigned &SrcReg, unsigned &SrcReg2,
int &Mask, int &Value) const {
unsigned Opc = MI->getOpcode();
// Set mask and the first source register.
switch (Opc) {
case Hexagon::CMPEHexagon4rr:
case Hexagon::CMPEQri:
case Hexagon::CMPEQrr:
case Hexagon::CMPGT64rr:
case Hexagon::CMPGTU64rr:
case Hexagon::CMPGTUri:
case Hexagon::CMPGTUrr:
case Hexagon::CMPGTri:
case Hexagon::CMPGTrr:
case Hexagon::CMPLTUrr:
case Hexagon::CMPLTrr:
SrcReg = MI->getOperand(1).getReg();
Mask = ~0;
break;
case Hexagon::CMPbEQri_V4:
case Hexagon::CMPbEQrr_sbsb_V4:
case Hexagon::CMPbEQrr_ubub_V4:
case Hexagon::CMPbGTUri_V4:
case Hexagon::CMPbGTUrr_V4:
case Hexagon::CMPbGTrr_V4:
SrcReg = MI->getOperand(1).getReg();
Mask = 0xFF;
break;
case Hexagon::CMPhEQri_V4:
case Hexagon::CMPhEQrr_shl_V4:
case Hexagon::CMPhEQrr_xor_V4:
case Hexagon::CMPhGTUri_V4:
case Hexagon::CMPhGTUrr_V4:
case Hexagon::CMPhGTrr_shl_V4:
SrcReg = MI->getOperand(1).getReg();
Mask = 0xFFFF;
break;
}
// Set the value/second source register.
switch (Opc) {
case Hexagon::CMPEHexagon4rr:
case Hexagon::CMPEQrr:
case Hexagon::CMPGT64rr:
case Hexagon::CMPGTU64rr:
case Hexagon::CMPGTUrr:
case Hexagon::CMPGTrr:
case Hexagon::CMPbEQrr_sbsb_V4:
case Hexagon::CMPbEQrr_ubub_V4:
case Hexagon::CMPbGTUrr_V4:
case Hexagon::CMPbGTrr_V4:
case Hexagon::CMPhEQrr_shl_V4:
case Hexagon::CMPhEQrr_xor_V4:
case Hexagon::CMPhGTUrr_V4:
case Hexagon::CMPhGTrr_shl_V4:
case Hexagon::CMPLTUrr:
case Hexagon::CMPLTrr:
SrcReg2 = MI->getOperand(2).getReg();
return true;
case Hexagon::CMPEQri:
case Hexagon::CMPGTUri:
case Hexagon::CMPGTri:
case Hexagon::CMPbEQri_V4:
case Hexagon::CMPbGTUri_V4:
case Hexagon::CMPhEQri_V4:
case Hexagon::CMPhGTUri_V4:
SrcReg2 = 0;
Value = MI->getOperand(2).getImm();
return true;
}
return false;
}
void HexagonInstrInfo::copyPhysReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I, DebugLoc DL,
unsigned DestReg, unsigned SrcReg,

4
lib/Target/Hexagon/HexagonInstrInfo.h
View File

@ -66,6 +66,10 @@ public:
const SmallVectorImpl<MachineOperand> &Cond,
DebugLoc DL) const;
virtual bool analyzeCompare(const MachineInstr *MI,
unsigned &SrcReg, unsigned &SrcReg2,
int &Mask, int &Value) const;
virtual void copyPhysReg(MachineBasicBlock &MBB,
MachineBasicBlock::iterator I, DebugLoc DL,
unsigned DestReg, unsigned SrcReg,