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| author | Sanjay Patel <spatel@rotateright.com> | 2015-12-09 16:17:20 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2015-12-09 16:17:20 +0000 |
| commit | 07410ed234702081a1fa42f1bc950421147c2c6c (patch) | |
| tree | 7e4dcec3fc4000af7680054a9dfcdc73b53140e7 /llvm/lib/Target/WebAssembly/WebAssemblyArgumentMove.cpp | |
| parent | b000bbdec22c555746686f7d937ce9b7c7fd77e9 (diff) | |
| download | bcm5719-llvm-07410ed234702081a1fa42f1bc950421147c2c6c.tar.gz bcm5719-llvm-07410ed234702081a1fa42f1bc950421147c2c6c.zip | |
[InstCombine] fold bitcasts around an extractelement
Example:
bitcast (extractelement (bitcast <2 x float> %X to <2 x i32>), 1) to float
--->
extractelement <2 x float> %X, i32 1
This is part of fixing PR25543:
https://llvm.org/bugs/show_bug.cgi?id=25543
The next step will be to generalize this fold:
trunc ( lshr ( bitcast X) ) -> extractelement (X)
Ie, I'm hoping to replace the existing transform of:
bitcast ( trunc ( lshr ( bitcast X)))
added by:
http://reviews.llvm.org/rL112232
with 2 less specific transforms to catch the case in the bug report.
Differential Revision: http://reviews.llvm.org/D14879
llvm-svn: 255124
Diffstat (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyArgumentMove.cpp')
0 files changed, 0 insertions, 0 deletions
