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[PowerPC] PR16512 - Support TLS call sequences in the asm parser

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This patch now adds support for recognizing TLS call sequences in
the asm parser.  This needs a new pattern BL8_TLS, which is like
BL8_NOP_TLS except without nop.  That pattern is used for the
asm parser only.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185478 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ulrich Weigand
2013-07-02 21:31:59 +00:00
parent a17a7e1868
commit 25b9bbae69
3 changed files with 40 additions and 2 deletions
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25
lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
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@@ -940,8 +940,29 @@ ParseOperand(SmallVectorImpl<MCParsedAsmOperand*> &Operands) {
// Push the parsed operand into the list of operands
Operands.push_back(Op);
// Check for D-form memory operands
if (getLexer().is(AsmToken::LParen)) {
// Check whether this is a TLS call expression
bool TLSCall = false;
if (const MCSymbolRefExpr *Ref = dyn_cast<MCSymbolRefExpr>(EVal))
TLSCall = Ref->getSymbol().getName() == "__tls_get_addr";
if (TLSCall && getLexer().is(AsmToken::LParen)) {
const MCExpr *TLSSym;
Parser.Lex(); // Eat the '('.
S = Parser.getTok().getLoc();
if (ParseExpression(TLSSym))
return Error(S, "invalid TLS call expression");
if (getLexer().isNot(AsmToken::RParen))
return Error(Parser.getTok().getLoc(), "missing ')'");
E = Parser.getTok().getLoc();
Parser.Lex(); // Eat the ')'.
Op = PPCOperand::CreateExpr(TLSSym, S, E, isPPC64());
Operands.push_back(Op);
}
// Otherwise, check for D-form memory operands
if (!TLSCall && getLexer().is(AsmToken::LParen)) {
Parser.Lex(); // Eat the '('.
S = Parser.getTok().getLoc();