Commit Graph

6 Commits

Author SHA1 Message Date
Matt Arsenault 687ec75d10 DAG: Change behavior of fminnum/fmaxnum nodes
Introduce new versions that follow the IEEE semantics
to help with legalization that may need quieted inputs.

There are some regressions from inserting unnecessary
canonicalizes when these are matched from fast math
fcmp + select which should be fixed in a future commit.

llvm-svn: 344914
2018-10-22 16:27:27 +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 a816073764 AMDGPU: Improve extract_vector_elt reduction combine
Handle fmul, fsub and preserve flags.

Also really test minnum/maxnum reductions.
The existing tests were only checking from
minnum/maxnum matched from a fast math compare
and select which is not the same.

llvm-svn: 339820
2018-08-15 21:34:06 +00:00
Matt Arsenault 1349a04ef5 AMDGPU: Make v2i16/v2f16 legal on VI
This usually results in better code. Fixes using
inline asm with short2, and also fixes having a different
ABI for function parameters between VI and gfx9.

Partially cleans up the mess used for lowering of the d16
operations. Making v4f16 legal will help clean this up more,
but this requires additional work.

llvm-svn: 332953
2018-05-22 06:32:10 +00:00
Farhana Aleen e24f3ff8de [AMDGPU] Support horizontal vectorization of min/max.
Author: FarhanaAleen

Reviewed By: rampitec

Subscribers: AMDGPU

Differential Revision: https://reviews.llvm.org/D46604

llvm-svn: 331920
2018-05-09 21:18:34 +00:00
Farhana Aleen e2dfe8a853 [AMDGPU] Support horizontal vectorization.
Author: FarhanaAleen

Reviewed By: rampitec, arsenm

Subscribers: llvm-commits, AMDGPU

Differential Revision: https://reviews.llvm.org/D46213

llvm-svn: 331313
2018-05-01 21:41:12 +00:00