Commit Graph

6 Commits

Author SHA1 Message Date
Changpeng Fang ba92059ca9 AMDGPU/SI: Extend promoting alloca to vector to arrays of up to 16 elements
Summary:
  This patch extends the promotion of alloca to vector to the arrays of up to 16 elements. Also we introduce
an option, -disable-promote-alloca-to-vector, to switch promotion to vector off, if needed.

Reviewers:
  arsenm

Differential Revision:
  https://reviews.llvm.org/D33559

llvm-svn: 325372
2018-02-16 19:14:17 +00:00
Yaxun Liu 2a22c5deff [AMDGPU] Switch to the new addr space mapping by default
This requires corresponding clang change.

Differential Revision: https://reviews.llvm.org/D40955

llvm-svn: 324101
2018-02-02 16:07:16 +00:00
Matt Arsenault 8728c5f2db AMDGPU: Cleanup subtarget features
Try to avoid mutually exclusive features. Don't use
a real default GPU, and use a fake "generic". The goal
is to make it easier to see which set of features are
incompatible between feature strings.

Most of the test changes are due to random scheduling changes
from not having a default fullspeed model.

llvm-svn: 310258
2017-08-07 14:58:04 +00:00
Matt Arsenault 3dbeefa978 AMDGPU: Mark all unspecified CC functions in tests as amdgpu_kernel
Currently the default C calling convention functions are treated
the same as compute kernels. Make this explicit so the default
calling convention can be changed to a non-kernel.

Converted with perl -pi -e 's/define void/define amdgpu_kernel void/'
on the relevant test directories (and undoing in one place that actually
wanted a non-kernel).

llvm-svn: 298444
2017-03-21 21:39:51 +00:00
Konstantin Zhuravlyov 1d65026ca6 [AMDGPU] Wave and register controls
- Implemented amdgpu-flat-work-group-size attribute
- Implemented amdgpu-num-active-waves-per-eu attribute
- Implemented amdgpu-num-sgpr attribute
- Implemented amdgpu-num-vgpr attribute
- Dynamic LDS constraints are in a separate patch

Patch by Tom Stellard and Konstantin Zhuravlyov

Differential Revision: https://reviews.llvm.org/D21562

llvm-svn: 280747
2016-09-06 20:22:28 +00:00
Matt Arsenault 8a028bf4d7 AMDGPU: Fix promote alloca pass creating huge arrays
This was assuming it could use all memory before, which is
a bad decision because it restricts occupancy.

By default, only try to use enough space that could reduce
occupancy to 7, an arbitrarily chosen limit.

Based on the exist LDS usage, try to round up to the limit
in the current tier instead of further hurting occupancy.
This isn't ideal, because it doesn't accurately know how much
space is going to be used for alignment padding.

llvm-svn: 269708
2016-05-16 21:19:59 +00:00