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9 Commits

Author SHA1 Message Date
Konstantin Zhuravlyov 0a1a7b6b23 Revert "AMDGPU: Enable ConstrainCopy DAG mutation" 
This reverts commit r287146.

This breaks few conformance tests.

llvm-svn: 287233
 2016-11-17 16:41:49 +00:00
Matt Arsenault 3b36bb1d87 AMDGPU: Enable ConstrainCopy DAG mutation 
This fixes a probably unintended divergence from the default
scheduler behavior.

llvm-svn: 287146
 2016-11-16 20:35:23 +00:00
Matt Arsenault fa5f767a38 AMDGPU: Improve splitting 64-bit bit ops by constants 
This addresses a TODO to handle operations besides and. This
also starts eliminating no-op operations with a constant that
can emerge later.

llvm-svn: 281488
 2016-09-14 15:19:03 +00:00
Changpeng Fang 71369b3a39 AMDGPU/SI: Enable load-store-opt by default. 
Summary: Enable load-store-opt by default, and update LIT tests.

Reviewers: arsenm

Differential Revision: http://reviews.llvm.org/D20694

llvm-svn: 270894
 2016-05-26 19:35:29 +00:00
Matthias Braun 97d0ffbe06 ScheduleDAGInstrs: Rework schedule graph builder. 
Re-comitting with a change that avoids undefined uses getting put into
the VRegUses list.

The new algorithm remembers the uses encountered while walking backwards
until a matching def is found. Contrary to the previous version this:
- Works without LiveIntervals being available
- Allows to increase the precision to subregisters/lanemasks
  (not used for now)

The changes in the AMDGPU tests are necessary because the R600 scheduler
is not stable with respect to the order of nodes in the ready queues.

Differential Revision: http://reviews.llvm.org/D9068

llvm-svn: 254683
 2015-12-04 01:51:19 +00:00
Matthias Braun 2fd672a221 Revert "ScheduleDAGInstrs: Rework schedule graph builder." 
This works mostly fine but breaks some stage 1 builders when compiling
compiler-rt on i386. Revert for further investigation as I can't see an
obvious cause/fix.

This reverts commit r254577.

llvm-svn: 254586
 2015-12-03 03:01:10 +00:00
Matthias Braun d35fe3d984 ScheduleDAGInstrs: Rework schedule graph builder. 
The new algorithm remembers the uses encountered while walking backwards
until a matching def is found. Contrary to the previous version this:
- Works without LiveIntervals being available
- Allows to increase the precision to subregisters/lanemasks
  (not used for now)

The changes in the AMDGPU tests are necessary because the R600 scheduler
is not stable with respect to the order of nodes in the ready queues.

Differential Revision: http://reviews.llvm.org/D9068

llvm-svn: 254577
 2015-12-03 02:05:27 +00:00
Tom Stellard e48fe2a27a AMDGPU/SI: Add support for shrinking v_cndmask_b32_e32 instructions 
Reviewers: arsenm

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11061

llvm-svn: 242146
 2015-07-14 14:15:03 +00:00
Tom Stellard 45bb48ea19 R600 -> AMDGPU rename 
llvm-svn: 239657
 2015-06-13 03:28:10 +00:00