llvm dev - Sep 2012 - [LLVMdev] unsafe math

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Junjie Gu

2012-Sep-13 21:39 UTC

[LLVMdev] unsafe math

I tried a simple float math (a + b - b) using llc's option
–enable-unsafe-fp-math,  but I still have add and sub in the code
(x86).

Does LLVM perform any float/double reassociation, etc under unsafe
math or fast-math ?

Thanks
Junjie

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