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Author SHA1 Message Date
Alexander Timofeev db7ee7660a [AMDGPU] Preliminary patch for divergence driven instruction selection. Immediate selection predicate changed 
Differential revision: https://reviews.llvm.org/D51734
Reviewers: rampitec

llvm-svn: 341928
 2018-09-11 11:56:50 +00:00
Matt Arsenault bf07a50a98 AMDGPU: Restrict extract_vector_elt combine to loads 
The intention is to enable the extract_vector_elt load combine,
and doing this for other operations interferes with more
useful optimizations on vectors.

Handle any type of load since in principle we should do the
same combine for the various load intrinsics.

llvm-svn: 341219
 2018-08-31 15:39:52 +00:00
Matt Arsenault 7121bed210 AMDGPU: Custom lower fexp 
This will allow the library to just use __builtin_expf directly
without expanding this itself. Note f64 still won't work because
there is no exp instruction for it.

llvm-svn: 339902
 2018-08-16 17:07:52 +00:00