https://bugs.llvm.org/show_bug.cgi?id=17686
Vlad Tsyrklevich <v...@tsyrklevich.net> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |v...@tsyrklevich.net
Resolution|FIXED |---
Status|RESOLVED |REOPENED
--- Comment #11 from Vlad Tsyrklevich <v...@tsyrklevich.net> ---
The reproducer in https://bugs.llvm.org/show_bug.cgi?id=30885 still continues
to reproduce. We're generating code that can cause an FPU exception in Jay's
example and his code is totally legal. It seems like Simon's patch fixed the
behavior when it was *profitable* but when it's not profitable it's still not
correct. e.g. Jay's example works correctly with -march=haswell but not
without. However, I'm not familiar enough with the codegen to say if
X86TargetLowering::shouldUseStrictFP_TO_INT() should always return true or what
the correct fix is.
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