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ARM assembly parsing and encoding for VMRS/FMSTAT.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141025 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2011-10-03 21:12:43 +00:00
parent dda4a07cd8
commit 5cd5ac6ad4
4 changed files with 22 additions and 2 deletions
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4
lib/Target/ARM/ARMInstrFormats.td
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@ -227,6 +227,10 @@ class tInstAlias<string Asm, dag Result, bit Emit = 0b1>
: InstAlias<Asm, Result, Emit>, Requires<[IsThumb]>;
class t2InstAlias<string Asm, dag Result, bit Emit = 0b1>
: InstAlias<Asm, Result, Emit>, Requires<[IsThumb2]>;
class VFP2InstAlias<string Asm, dag Result, bit Emit = 0b1>
: InstAlias<Asm, Result, Emit>, Requires<[HasVFP2]>;
class VFP3InstAlias<string Asm, dag Result, bit Emit = 0b1>
: InstAlias<Asm, Result, Emit>, Requires<[HasVFP3]>;
//===----------------------------------------------------------------------===//
// ARM Instruction templates.

7
lib/Target/ARM/ARMInstrVFP.td
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@ -1148,3 +1148,10 @@ def FCONSTS : VFPAI<(outs SPR:$Sd), (ins vfp_f32imm:$imm),
let Inst{3-0} = imm{3-0};
}
}
//===----------------------------------------------------------------------===//
// Assembler aliases.
//
def : VFP2InstAlias<"fmstat${p}", (FMSTAT pred:$p)>;

7
lib/Target/ARM/AsmParser/ARMAsmParser.cpp
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@ -3046,6 +3046,7 @@ bool ARMAsmParser::parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands,
Error(Parser.getTok().getLoc(), "unexpected token in operand");
return true;
case AsmToken::Identifier: {
// If this is VMRS, check for the apsr_nzcv operand.
if (!tryParseRegisterWithWriteBack(Operands))
return false;
int Res = tryParseShiftRegister(Operands);
@ -3053,6 +3054,12 @@ bool ARMAsmParser::parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands,
return false;
else if (Res == -1) // irrecoverable error
return true;
if (Mnemonic == "vmrs" && Parser.getTok().getString() == "apsr_nzcv") {
S = Parser.getTok().getLoc();
Parser.Lex();
Operands.push_back(ARMOperand::CreateToken("apsr_nzcv", S));
return false;
}
// Fall though for the Identifier case that is not a register or a
// special name.

6
test/MC/ARM/simple-fp-encoding.s
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@ -114,8 +114,10 @@
@ CHECK: vnmls.f32 s1, s2, s0 @ encoding: [0x00,0x0a,0x51,0xee]
vnmls.f32 s1, s2, s0
@ FIXME: vmrs apsr_nzcv, fpscr @ encoding: [0x10,0xfa,0xf1,0xee]
@ vmrs apsr_nzcv, fpscr
@ CHECK: vmrs apsr_nzcv, fpscr @ encoding: [0x10,0xfa,0xf1,0xee]
@ CHECK: vmrs apsr_nzcv, fpscr @ encoding: [0x10,0xfa,0xf1,0xee]
vmrs apsr_nzcv, fpscr
fmstat
@ CHECK: vnegne.f64 d16, d16 @ encoding: [0x60,0x0b,0xf1,0x1e]
vnegne.f64 d16, d16