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Author SHA1 Message Date
Ryan Prichard d202201410 Reland "[builtins] Define fmax and scalbn inline" 
This reverts commit 680f836c2f.

Disable the non-default-rounding-mode scalbn[f] tests when we're using
the MSVC libraries.

Differential Revision: https://reviews.llvm.org/D91841
 2021-02-26 16:20:14 -08:00
Ryan Prichard 680f836c2f Revert "[builtins] Define fmax and scalbn inline" 
This reverts commit 341889ee9e.

The new unit tests fail on sanitizer-windows.
 2021-02-24 14:47:48 -08:00
Ryan Prichard 341889ee9e [builtins] Define fmax and scalbn inline 
Define inline versions of __compiler_rt_fmax* and __compiler_rt_scalbn*
rather than depend on the versions in libm. As with
__compiler_rt_logbn*, these functions are only defined for single,
double, and quad precision (binary128).

Fixes PR32279 for targets using only these FP formats (e.g. Android
on arm/arm64/x86/x86_64).

For single and double precision, on AArch64, use __builtin_fmax[f]
instead of the new inline function, because the builtin expands to the
AArch64 fmaxnm instruction.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D91841
 2021-02-24 14:27:37 -08:00