Commit Graph

6 Commits

Author SHA1 Message Date
Pirama Arumuga Nainar fbfba29d74 [CodeGen] Mark fma as const for Android
Summary:
r318093 sets fma, fmaf, fmal as const for Gnu and MSVC.  Android also
does not set errno for these functions.  So mark these const for
Android.

Reviewers: spatel, efriedma, srhines, chh, enh

Subscribers: cfe-commits, llvm-commits

Differential Revision: https://reviews.llvm.org/D44852

llvm-svn: 328552
2018-03-26 17:03:34 +00:00
Benjamin Kramer dfecbe9ad8 Add support for a limited subset of TS 18661-3 math builtins.
These just overloads for _Float128. They're supported by GCC 7 and used
by glibc. APFloat support is already there so just add the overloads.

__builtin_copysignf128
__builtin_fabsf128
__builtin_huge_valf128
__builtin_inff128
__builtin_nanf128
__builtin_nansf128

This is the same support that GCC has, according to the documentation,
but limited to _Float128.

llvm-svn: 321948
2018-01-06 21:49:54 +00:00
Sanjay Patel 08fba37e9d [CodeGen] fix mapping from fmod calls to frem instruction
Similar to D40044 and discussed in D40594.

llvm-svn: 319619
2017-12-02 17:52:00 +00:00
Sanjay Patel 3e287b4d35 [CodeGen] convert math libcalls/builtins to equivalent LLVM intrinsics
There are 20 LLVM math intrinsics that correspond to mathlib calls according to the LangRef:
http://llvm.org/docs/LangRef.html#standard-c-library-intrinsics

We were only converting 3 mathlib calls (sqrt, fma, pow) and 12 builtin calls (ceil, copysign, 
fabs, floor, fma, fmax, fmin, nearbyint, pow, rint, round, trunc) to their intrinsic-equivalents.

This patch pulls the transforms together and handles all 20 cases. The switch is guarded by a 
check for const-ness to make sure we're not doing the transform if errno could possibly be set by
the libcall or builtin.

Differential Revision: https://reviews.llvm.org/D40044

llvm-svn: 319593
2017-12-01 23:15:52 +00:00
Sanjay Patel 33f83995a8 [CodeGen] fix const-ness of cbrt and fma
cbrt() is always constant because it can't overflow or underflow. Therefore, it can't set errno.

fma() is not always constant because it can overflow or underflow. Therefore, it can set errno.
But we know that it never sets errno on GNU / MSVC, so make it constant in those environments.

Differential Revision: https://reviews.llvm.org/D39641

llvm-svn: 318093
2017-11-13 22:11:49 +00:00
Sanjay Patel 040fbe3027 [CodeGen] split math and complex tests into separate files; NFCI
The files are already large, and we may need to add even more RUNs to 
distinguish differences based on OS, environment, or other platform things.

llvm-svn: 317583
2017-11-07 15:13:22 +00:00