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author | Michael Liao <michael.liao@intel.com> | 2012-11-08 07:28:54 +0000 |
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committer | Michael Liao <michael.liao@intel.com> | 2012-11-08 07:28:54 +0000 |
commit | be02a90de17f857ba65bbd8a11653ca1bad30adc (patch) | |
tree | ca8ccf2e856410b18f269335eb1b8ed98c1c1426 /lib/Target/X86/AsmParser/X86AsmLexer.cpp | |
parent | 7629de3326318e533ab969abd1b0cbc569b3f3b7 (diff) | |
download | llvm-be02a90de17f857ba65bbd8a11653ca1bad30adc.tar.gz llvm-be02a90de17f857ba65bbd8a11653ca1bad30adc.tar.bz2 llvm-be02a90de17f857ba65bbd8a11653ca1bad30adc.tar.xz |
Add support of RTM from TSX extension
- Add RTM code generation support throught 3 X86 intrinsics:
xbegin()/xend() to start/end a transaction region, and xabort() to abort a
tranaction region
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167573 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/AsmParser/X86AsmLexer.cpp')
-rw-r--r-- | lib/Target/X86/AsmParser/X86AsmLexer.cpp | 43 |
1 files changed, 21 insertions, 22 deletions
diff --git a/lib/Target/X86/AsmParser/X86AsmLexer.cpp b/lib/Target/X86/AsmParser/X86AsmLexer.cpp index 2794e60df2..66ad353709 100644 --- a/lib/Target/X86/AsmParser/X86AsmLexer.cpp +++ b/lib/Target/X86/AsmParser/X86AsmLexer.cpp @@ -18,19 +18,19 @@ using namespace llvm; namespace { - + class X86AsmLexer : public MCTargetAsmLexer { const MCAsmInfo &AsmInfo; - + bool tentativeIsValid; AsmToken tentativeToken; - + const AsmToken &lexTentative() { tentativeToken = getLexer()->Lex(); tentativeIsValid = true; return tentativeToken; } - + const AsmToken &lexDefinite() { if (tentativeIsValid) { tentativeIsValid = false; @@ -38,7 +38,7 @@ class X86AsmLexer : public MCTargetAsmLexer { } return getLexer()->Lex(); } - + AsmToken LexTokenATT(); AsmToken LexTokenIntel(); protected: @@ -47,7 +47,7 @@ protected: SetError(SMLoc(), "No MCAsmLexer installed"); return AsmToken(AsmToken::Error, "", 0); } - + switch (AsmInfo.getAssemblerDialect()) { default: SetError(SMLoc(), "Unhandled dialect"); @@ -71,33 +71,32 @@ public: AsmToken X86AsmLexer::LexTokenATT() { AsmToken lexedToken = lexDefinite(); - + switch (lexedToken.getKind()) { default: return lexedToken; case AsmToken::Error: SetError(Lexer->getErrLoc(), Lexer->getErr()); return lexedToken; - + case AsmToken::Percent: { const AsmToken &nextToken = lexTentative(); if (nextToken.getKind() != AsmToken::Identifier) return lexedToken; - if (unsigned regID = MatchRegisterName(nextToken.getString())) { lexDefinite(); - + // FIXME: This is completely wrong when there is a space or other // punctuation between the % and the register name. StringRef regStr(lexedToken.getString().data(), - lexedToken.getString().size() + + lexedToken.getString().size() + nextToken.getString().size()); - - return AsmToken(AsmToken::Register, regStr, + + return AsmToken(AsmToken::Register, regStr, static_cast<int64_t>(regID)); } - + // Match register name failed. If this is "db[0-7]", match it as an alias // for dr[0-7]. if (nextToken.getString().size() == 3 && @@ -113,29 +112,29 @@ AsmToken X86AsmLexer::LexTokenATT() { case '6': RegNo = X86::DR6; break; case '7': RegNo = X86::DR7; break; } - + if (RegNo != -1) { lexDefinite(); // FIXME: This is completely wrong when there is a space or other // punctuation between the % and the register name. StringRef regStr(lexedToken.getString().data(), - lexedToken.getString().size() + + lexedToken.getString().size() + nextToken.getString().size()); - return AsmToken(AsmToken::Register, regStr, + return AsmToken(AsmToken::Register, regStr, static_cast<int64_t>(RegNo)); } } - - + + return lexedToken; - } + } } } AsmToken X86AsmLexer::LexTokenIntel() { const AsmToken &lexedToken = lexDefinite(); - + switch(lexedToken.getKind()) { default: return lexedToken; @@ -144,7 +143,7 @@ AsmToken X86AsmLexer::LexTokenIntel() { return lexedToken; case AsmToken::Identifier: { unsigned regID = MatchRegisterName(lexedToken.getString().lower()); - + if (regID) return AsmToken(AsmToken::Register, lexedToken.getString(), |