[llvm-dev] Override TargetOptions for block of code?

Hal Finkel via llvm-dev llvm-dev at lists.llvm.org
Wed Jun 28 10:53:40 PDT 2017

Hi, Jason,

You shouldn't need to use UsafeFPMath at all now. Instead, use fast-math 
flags on the relevant instructions. See: 


On 06/28/2017 12:29 PM, Jason via llvm-dev wrote:
> Hi, we generally run our JIT with UnsafeFPMath enabled, but there are 
> a few specific instances where a block of code needs to follow strict 
> FPMath. Is there a way to temporarily override TargetOptions for a 
> specific block of IR?
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Hal Finkel
Lead, Compiler Technology and Programming Languages
Leadership Computing Facility
Argonne National Laboratory

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