From 7f9b5138470db1dc58f3bc05631284c653c9ed7a Mon Sep 17 00:00:00 2001 From: Melanie Blower Date: Wed, 4 Dec 2019 12:23:46 -0800 Subject: Reapply af57dbf12e54 "Add support for options -frounding-math, ftrapping-math, -ffp-model=, and -ffp-exception-behavior=" Patch was reverted because https://bugs.llvm.org/show_bug.cgi?id=44048 The original patch is modified to set the strictfp IR attribute explicitly in CodeGen instead of as a side effect of IRBuilder. In the 2nd attempt to reapply there was a windows lit test fail, the tests were fixed to use wildcard matching. Differential Revision: https://reviews.llvm.org/D62731 --- clang/lib/Frontend/CompilerInvocation.cpp | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'clang/lib/Frontend/CompilerInvocation.cpp') diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp index 74831e7..198ae69b7 100644 --- a/clang/lib/Frontend/CompilerInvocation.cpp +++ b/clang/lib/Frontend/CompilerInvocation.cpp @@ -3145,6 +3145,34 @@ static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK, Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; } + LangOptions::FPRoundingModeKind FPRM = LangOptions::FPR_ToNearest; + if (Args.hasArg(OPT_frounding_math)) { + FPRM = LangOptions::FPR_Dynamic; + } + Opts.setFPRoundingMode(FPRM); + + if (Args.hasArg(OPT_ftrapping_math)) { + Opts.setFPExceptionMode(LangOptions::FPE_Strict); + } + + if (Args.hasArg(OPT_fno_trapping_math)) { + Opts.setFPExceptionMode(LangOptions::FPE_Ignore); + } + + LangOptions::FPExceptionModeKind FPEB = LangOptions::FPE_Ignore; + if (Arg *A = Args.getLastArg(OPT_ffp_exception_behavior_EQ)) { + StringRef Val = A->getValue(); + if (Val.equals("ignore")) + FPEB = LangOptions::FPE_Ignore; + else if (Val.equals("maytrap")) + FPEB = LangOptions::FPE_MayTrap; + else if (Val.equals("strict")) + FPEB = LangOptions::FPE_Strict; + else + Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val; + } + Opts.setFPExceptionMode(FPEB); + Opts.RetainCommentsFromSystemHeaders = Args.hasArg(OPT_fretain_comments_from_system_headers); -- cgit v1.1