llvm-project

Commit Graph

Author	SHA1	Message	Date
Matt Arsenault	a4e71f01c0	Assume ieee behavior without denormal-fp-math attribute	2020-03-07 12:10:56 -05:00
Matt Arsenault	a3c814d234	Separately track input and output denormal mode AMDGPU and x86 at least both have separate controls for whether denormal results are flushed on output, and for whether denormals are implicitly treated as 0 as an input. The current DAGCombiner use only really cares about the input treatment of denormals.	2020-02-04 12:59:21 -05:00
Sjoerd Meijer	0a8d4216ad	This adds new options -fdenormal-fp-math and passes through option -ffast-math to CC1, which are translated to function attributes and can e.g. be mapped on build attributes FP_exceptions and FP_denormal. Setting these build attributes allows better selection of floating point libraries. Differential Revision: https://reviews.llvm.org/D23840 llvm-svn: 280064	2016-08-30 08:09:45 +00:00

Author

SHA1

Message

Date

Matt Arsenault

a4e71f01c0

Assume ieee behavior without denormal-fp-math attribute

2020-03-07 12:10:56 -05:00

Matt Arsenault

a3c814d234

Separately track input and output denormal mode

AMDGPU and x86 at least both have separate controls for whether
denormal results are flushed on output, and for whether denormals are
implicitly treated as 0 as an input. The current DAGCombiner use only
really cares about the input treatment of denormals.

2020-02-04 12:59:21 -05:00

Sjoerd Meijer

0a8d4216ad

This adds new options -fdenormal-fp-math and passes through option -ffast-math

to CC1, which are translated to function attributes and can e.g. be mapped on
build attributes FP_exceptions and FP_denormal. Setting these build attributes
allows better selection of floating point libraries.

Differential Revision: https://reviews.llvm.org/D23840

llvm-svn: 280064

2016-08-30 08:09:45 +00:00

3 Commits