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| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2014-06-24 22:13:39 +0000 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2014-06-24 22:13:39 +0000 |
| commit | 257d48d22cadb5677b1be4a756b5bc74f286139b (patch) | |
| tree | a8e73efc0ab8383bbcf8fffa4807b5954a758130 /clang/lib/Frontend/InitPreprocessor.cpp | |
| parent | 6008924508d0c8fdb82ff338a13d073a0650a51c (diff) | |
| download | llvm-257d48d22cadb5677b1be4a756b5bc74f286139b.zip llvm-257d48d22cadb5677b1be4a756b5bc74f286139b.tar.gz llvm-257d48d22cadb5677b1be4a756b5bc74f286139b.tar.bz2 | |
R600: Fix inconsistency in rsq instructions.
R600 was using a clamped version of rsq, but SI was not. Add a
new rsq_clamped intrinsic and use them consistently.
It's unclear to me from the documentation what behavior
the R600 instructions have, so I assume they have the legacy behavior
described by the SI documents. For R600, use RECIPSQRT_IEEE
for both llvm.AMDGPU.rsq.legacy and llvm.AMDGPU.rsq. R600 also
has RECIPSQRT_FF, which I'm not sure how it fits in here.
llvm-svn: 211637
Diffstat (limited to 'clang/lib/Frontend/InitPreprocessor.cpp')
0 files changed, 0 insertions, 0 deletions