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[Sparc] Emit correct encoding for atomic instructions. Also, add support for parsing CAS instructions to test the CAS encoding.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200963 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Venkatraman Govindaraju
2014-02-07 07:34:49 +00:00
parent fabdd6632a
commit 464d664971
5 changed files with 51 additions and 12 deletions
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19
lib/Target/Sparc/AsmParser/SparcAsmParser.cpp
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@@ -546,7 +546,24 @@ parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands,
Parser.getTok().getLoc()));
Parser.Lex(); // Eat the [
ResTy = parseMEMOperand(Operands);
if (Mnemonic == "cas" || Mnemonic == "casx") {
SMLoc S = Parser.getTok().getLoc();
if (getLexer().getKind() != AsmToken::Percent)
return MatchOperand_NoMatch;
Parser.Lex(); // eat %
unsigned RegNo, RegKind;
if (!matchRegisterName(Parser.getTok(), RegNo, RegKind))
return MatchOperand_NoMatch;
Parser.Lex(); // Eat the identifier token.
SMLoc E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer()-1);
Operands.push_back(SparcOperand::CreateReg(RegNo, RegKind, S, E));
ResTy = MatchOperand_Success;
} else {
ResTy = parseMEMOperand(Operands);
}
if (ResTy != MatchOperand_Success)
return ResTy;