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ARM handle :lower16: and :upper16: after a '#' prefix.

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rdar://11252521

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154862 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2012-04-16 21:18:46 +00:00
parent 39ac3252e8
commit b8768dc32d
1 changed files with 17 additions and 13 deletions
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30
lib/Target/ARM/AsmParser/ARMAsmParser.cpp
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@ -4526,22 +4526,26 @@ bool ARMAsmParser::parseOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands,
case AsmToken::Dollar:
case AsmToken::Hash: {
// #42 -> immediate.
// TODO: ":lower16:" and ":upper16:" modifiers after # before immediate
S = Parser.getTok().getLoc();
Parser.Lex();
bool isNegative = Parser.getTok().is(AsmToken::Minus);
const MCExpr *ImmVal;
if (getParser().ParseExpression(ImmVal))
return true;
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ImmVal);
if (CE) {
int32_t Val = CE->getValue();
if (isNegative && Val == 0)
ImmVal = MCConstantExpr::Create(INT32_MIN, getContext());
if (Parser.getTok().isNot(AsmToken::Colon)) {
bool isNegative = Parser.getTok().is(AsmToken::Minus);
const MCExpr *ImmVal;
if (getParser().ParseExpression(ImmVal))
return true;
const MCConstantExpr *CE = dyn_cast<MCConstantExpr>(ImmVal);
if (CE) {
int32_t Val = CE->getValue();
if (isNegative && Val == 0)
ImmVal = MCConstantExpr::Create(INT32_MIN, getContext());
}
E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
Operands.push_back(ARMOperand::CreateImm(ImmVal, S, E));
return false;
}
E = SMLoc::getFromPointer(Parser.getTok().getLoc().getPointer() - 1);
Operands.push_back(ARMOperand::CreateImm(ImmVal, S, E));
return false;
// w/ a ':' after the '#', it's just like a plain ':'.
// FALLTHROUGH
}
case AsmToken::Colon: {
// ":lower16:" and ":upper16:" expression prefixes