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| author | Daniel Sanders <daniel_l_sanders@apple.com> | 2017-10-23 18:19:24 +0000 |
|---|---|---|
| committer | Daniel Sanders <daniel_l_sanders@apple.com> | 2017-10-23 18:19:24 +0000 |
| commit | d66e0901aea59c485fb7e94652217842fadac267 (patch) | |
| tree | 796e7680a287cd0a6a2b9578f45b96e47001691b /llvm/unittests/Support/FormatVariadicTest.cpp | |
| parent | e140b3d122ec2bf8ac4184ee58dd5dca7af6cff7 (diff) | |
| download | bcm5719-llvm-d66e0901aea59c485fb7e94652217842fadac267.tar.gz bcm5719-llvm-d66e0901aea59c485fb7e94652217842fadac267.zip | |
[globalisel][tablegen] Import stores and allow GISel to automatically substitute zero regs like WZR/XZR/$zero.
This patch enables the import of stores. Unfortunately, doing so by itself,
loses an optimization where storing 0 to memory makes use of WZR/XZR.
To mitigate this, this patch also introduces a new feature that allows register
operands to nominate a zero register. When this is done, GlobalISel will
substitute (G_CONSTANT 0) with the nominated register automatically. This
is currently configured to only apply to the stores.
Applying it to GPR32/GPR64 register classes in general will be done after
review see (https://reviews.llvm.org/D39150).
llvm-svn: 316360
Diffstat (limited to 'llvm/unittests/Support/FormatVariadicTest.cpp')
0 files changed, 0 insertions, 0 deletions
