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[mips][microMIPS] Implement 16-bit instructions registers including ZERO instead of S0

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Implement microMIPS 16-bit instructions register set: $0, $2-$7 and $17.

Differential Revision: http://reviews.llvm.org/D5780


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222652 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jozef Kolek
2014-11-24 14:25:53 +00:00
parent 39e9ec3049
commit d49e74eaa5
3 changed files with 41 additions and 0 deletions
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12
lib/Target/Mips/AsmParser/MipsAsmParser.cpp
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@@ -663,6 +663,11 @@ public:
Inst.addOperand(MCOperand::CreateReg(getGPRMM16Reg()));
}
void addGPRMM16AsmRegZeroOperands(MCInst &Inst, unsigned N) const {
assert(N == 1 && "Invalid number of operands!");
Inst.addOperand(MCOperand::CreateReg(getGPRMM16Reg()));
}
/// Render the operand to an MCInst as a GPR64
/// Asserts if the wrong number of operands are requested, or the operand
/// is not a k_RegisterIndex compatible with RegKind_GPR
@@ -964,6 +969,13 @@ public:
return ((RegIdx.Index >= 2 && RegIdx.Index <= 7)
|| RegIdx.Index == 16 || RegIdx.Index == 17);
}
bool isMM16AsmRegZero() const {
if (!(isRegIdx() && RegIdx.Kind))
return false;
return (RegIdx.Index == 0 ||
(RegIdx.Index >= 2 && RegIdx.Index <= 7) ||
RegIdx.Index == 17);
}
bool isFGRAsmReg() const {
// AFGR64 is $0-$15 but we handle this in getAFGR64()
return isRegIdx() && RegIdx.Kind & RegKind_FGR && RegIdx.Index <= 31;