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-rw-r--r--lib/Frontend/CompilerInvocation.cpp17
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 943cb20e2d..cf08913e3b 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -759,6 +759,11 @@ static void LangOptsToArgs(const LangOptions &Opts, ToArgsList &Res) {
Res.push_back("-ftrapv-handler", Opts.OverflowHandler);
break;
}
+ switch (Opts.getFPContractMode()) {
+ case LangOptions::FPC_Off: Res.push_back("-ffp-contract=off"); break;
+ case LangOptions::FPC_On: Res.push_back("-ffp-contract=on"); break;
+ case LangOptions::FPC_Fast: Res.push_back("-ffp-contract=fast"); break;
+ }
if (Opts.HeinousExtensions)
Res.push_back("-fheinous-gnu-extensions");
// Optimize is implicit.
@@ -1975,6 +1980,18 @@ static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
Diags.Report(diag::err_drv_invalid_value)
<< Args.getLastArg(OPT_fvisibility)->getAsString(Args) << Vis;
+ if (Arg *A = Args.getLastArg(OPT_ffp_contract)) {
+ StringRef Val = A->getValue(Args);
+ if (Val == "fast")
+ Opts.setFPContractMode(LangOptions::FPC_Fast);
+ else if (Val == "on")
+ Opts.setFPContractMode(LangOptions::FPC_On);
+ else if (Val == "off")
+ Opts.setFPContractMode(LangOptions::FPC_Off);
+ else
+ Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << Val;
+ }
+
if (Args.hasArg(OPT_fvisibility_inlines_hidden))
Opts.InlineVisibilityHidden = 1;