[PowerPC] PR16512 - Support TLS call sequences in the asm parser
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.
llvm-svn: 185478
diff --git a/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp b/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
index 7a654ea..4892963 100644
--- a/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
+++ b/llvm/lib/Target/PowerPC/AsmParser/PPCAsmParser.cpp
@@ -940,8 +940,29 @@
// 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();