From 9205317bc3814acd8e898e356ccf7faed9b47090 Mon Sep 17 00:00:00 2001 From: Michael Ilseman Date: Tue, 27 Nov 2012 00:42:44 +0000 Subject: Fast-math flags for LLVM IR parsing and printing Added in the ability to read LLVM IR text that contains fast-math flags as a sequence of capital letters separated by spaces in any order. Added in the printing of the fast-math flags in a canonical order, and don't print the other flags when 'fast' is specified, as 'fast' implies all the others. llvm-svn: 168645 --- llvm/lib/AsmParser/LLParser.cpp | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'llvm/lib/AsmParser/LLParser.cpp') diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp index 41cca685769..65f42450622 100644 --- a/llvm/lib/AsmParser/LLParser.cpp +++ b/llvm/lib/AsmParser/LLParser.cpp @@ -3012,7 +3012,17 @@ int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB, } case lltok::kw_fadd: case lltok::kw_fsub: - case lltok::kw_fmul: return ParseArithmetic(Inst, PFS, KeywordVal, 2); + case lltok::kw_fmul: + case lltok::kw_fdiv: + case lltok::kw_frem: { + FastMathFlags FMF = EatFastMathFlagsIfPresent(); + int Res = ParseArithmetic(Inst, PFS, KeywordVal, 2); + if (Res != 0) + return Res; + if (FMF.any()) + Inst->setFastMathFlags(FMF); + return 0; + } case lltok::kw_sdiv: case lltok::kw_udiv: @@ -3027,8 +3037,6 @@ int LLParser::ParseInstruction(Instruction *&Inst, BasicBlock *BB, case lltok::kw_urem: case lltok::kw_srem: return ParseArithmetic(Inst, PFS, KeywordVal, 1); - case lltok::kw_fdiv: - case lltok::kw_frem: return ParseArithmetic(Inst, PFS, KeywordVal, 2); case lltok::kw_and: case lltok::kw_or: case lltok::kw_xor: return ParseLogical(Inst, PFS, KeywordVal); -- cgit v1.2.3