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| author | David Bolvansky <david.bolvansky@gmail.com> | 2019-07-10 14:43:27 +0000 |
|---|---|---|
| committer | David Bolvansky <david.bolvansky@gmail.com> | 2019-07-10 14:43:27 +0000 |
| commit | 0735cc1954d84afa742abadf78e4136489f7cd0d (patch) | |
| tree | 34b46971f5c62bb14fd7ec7df7166e5542b6f988 /llvm/lib/Object/COFFObjectFile.cpp | |
| parent | 9cd82a4fbd2ded1e4d6b3815d153b28057ee1e75 (diff) | |
| download | bcm5719-llvm-0735cc1954d84afa742abadf78e4136489f7cd0d.tar.gz bcm5719-llvm-0735cc1954d84afa742abadf78e4136489f7cd0d.zip | |
[InstCombine] pow(C,x) -> exp2(log2(C)*x)
Summary:
Transform
pow(C,x)
To
exp2(log2(C)*x)
if C > 0, C != inf, C != NaN (and C is not power of 2, since we have some fold for such case already).
log(C) is folded by the compiler and exp2 is much faster to compute than pow.
Reviewers: spatel, efriedma, evandro
Reviewed By: evandro
Subscribers: lebedev.ri, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D64099
llvm-svn: 365637
Diffstat (limited to 'llvm/lib/Object/COFFObjectFile.cpp')
0 files changed, 0 insertions, 0 deletions
