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author | Reid Kleckner <reid@kleckner.net> | 2014-04-24 20:14:34 +0000 |
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committer | Reid Kleckner <reid@kleckner.net> | 2014-04-24 20:14:34 +0000 |
commit | 710c1a449dd7bee747ecf9c344a6f6d5461a158d (patch) | |
tree | 112a9b219c12b5a90996ac964c861b3526f25266 /lib/AsmParser/LLParser.h | |
parent | 870200a833584ca4e05f5d1258265451d8b871eb (diff) | |
download | llvm-710c1a449dd7bee747ecf9c344a6f6d5461a158d.tar.gz llvm-710c1a449dd7bee747ecf9c344a6f6d5461a158d.tar.bz2 llvm-710c1a449dd7bee747ecf9c344a6f6d5461a158d.tar.xz |
Add 'musttail' marker to call instructions
This is similar to the 'tail' marker, except that it guarantees that
tail call optimization will occur. It also comes with convervative IR
verification rules that ensure that tail call optimization is possible.
Reviewers: nicholas
Differential Revision: http://llvm-reviews.chandlerc.com/D3240
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207143 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AsmParser/LLParser.h')
-rw-r--r-- | lib/AsmParser/LLParser.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/AsmParser/LLParser.h b/lib/AsmParser/LLParser.h index f5c8a5a26d..e2bf46290b 100644 --- a/lib/AsmParser/LLParser.h +++ b/lib/AsmParser/LLParser.h @@ -372,6 +372,8 @@ namespace llvm { bool ParseFunctionBody(Function &Fn); bool ParseBasicBlock(PerFunctionState &PFS); + enum TailCallType { TCT_None, TCT_Tail, TCT_MustTail }; + // Instruction Parsing. Each instruction parsing routine can return with a // normal result, an error result, or return having eaten an extra comma. enum InstResult { InstNormal = 0, InstError = 1, InstExtraComma = 2 }; @@ -398,7 +400,8 @@ namespace llvm { bool ParseShuffleVector(Instruction *&I, PerFunctionState &PFS); int ParsePHI(Instruction *&I, PerFunctionState &PFS); bool ParseLandingPad(Instruction *&I, PerFunctionState &PFS); - bool ParseCall(Instruction *&I, PerFunctionState &PFS, bool isTail); + bool ParseCall(Instruction *&I, PerFunctionState &PFS, + CallInst::TailCallKind IsTail); int ParseAlloc(Instruction *&I, PerFunctionState &PFS); int ParseLoad(Instruction *&I, PerFunctionState &PFS); int ParseStore(Instruction *&I, PerFunctionState &PFS); |