llvm-mirror/test/Transforms/SLPVectorizer
Matthew Simpson bcc32afd72 Reapply r257800 with fix
The fix uniques the bundle of getelementptr indices we are about to vectorize
since it's possible for the same index to be used by multiple instructions.
The original commit message is below.

[SLP] Vectorize the index computations of getelementptr instructions.

This patch seeds the SLP vectorizer with getelementptr indices. The primary
motivation in doing so is to vectorize gather-like idioms beginning with
consecutive loads (e.g., g[a[0] - b[0]] + g[a[1] - b[1]] + ...). While these
cases could be vectorized with a top-down phase, seeding the existing bottom-up
phase with the index computations avoids the complexity, compile-time, and
phase ordering issues associated with a full top-down pass. Only bundles of
single-index getelementptrs with non-constant differences are considered for
vectorization.

llvm-svn: 257918
2016-01-15 18:51:51 +00:00
..
AArch64 Reapply r257800 with fix 2016-01-15 18:51:51 +00:00
AMDGPU [SLPVectorizer] Try different vectorization factors for store chains 2015-07-08 23:40:55 +00:00
ARM [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
X86 Reapply r257105 "[Verifier] Check that debug values have proper size" 2016-01-15 00:46:17 +00:00
XCore [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00