search for: disabletailcalls

...eciseFPMADOption, "less-precise-fpmad"); RESET_OPTION(UnsafeFPMath, "unsafe-fp-math"); RESET_OPTION(NoInfsFPMath, "no-infs-fp-math"); RESET_OPTION(NoNaNsFPMath, "no-nans-fp-math"); RESET_OPTION(UseSoftFloat, "use-soft-float"); RESET_OPTION(DisableTailCalls, "disable-tail-calls"); I cannot find the code or mechanism to turn off: NoFramePointerElim No code generator has these specialized, so this is happening for all targets. Any help?

...ew(std::nothrow) PassManagerBuilder(); if (PMBuilder == nullptr) { *error_message = strdup("memory allocation failure"); return true; } PMBuilder->OptLevel = target_machine->getOptLevel(); PMBuilder->SizeLevel = is_small ? 2 : 0; PMBuilder->DisableTailCalls = is_debug; PMBuilder->DisableUnitAtATime = is_debug; PMBuilder->DisableUnrollLoops = is_debug; PMBuilder->SLPVectorize = !is_debug; PMBuilder->LoopVectorize = !is_debug; PMBuilder->RerollLoops = !is_debug; // Leaving NewGVN as default (off) because when on it...

...- return false; - // Externally-defined functions with weak linkage should not be // tail-called on ARM when the OS does not support dynamic // pre-emption of symbols, as the AAELF spec requires normal calls @@ -2365,7 +2376,7 @@ if (!CI->isTailCall() || getTargetMachine().Options.DisableTailCalls) return false; - return !Subtarget->isThumb1Only(); + return true; } // ConstantPool, JumpTable, GlobalAddress, and ExternalSymbol are lowered as

Hi Sanjay, Thanks, I saw this flag and it's definitely should be considered, but it appeared to me to be static characteristic of target platform. I'm not sure how appropriate it would be to change its value from a front-end. It says "Has", while optional flag would rather say "Uses" meaning that implementation cares about floating point exceptions. Regards, Sergey

...44 --- a/lib/Target/TargetMachine.cpp +++ b/lib/Target/TargetMachine.cpp @@ -68,6 +68,7 @@ void TargetMachine::resetTargetOptions(const MachineFunction *MF) const { RESET_OPTION(NoNaNsFPMath, "no-nans-fp-math"); RESET_OPTION(UseSoftFloat, "use-soft-float"); RESET_OPTION(DisableTailCalls, "disable-tail-calls"); + RESET_OPTION(HonorFPExceptions, "honor-fp-exceptions"); TO.MCOptions.SanitizeAddress = F->hasFnAttribute(Attribute::SanitizeAddress); } diff --git a/lib/Transforms/InstCombine/InstCombine.h b/lib/Transforms/InstCombine/InstCombine.h index 6c0d...