llvm-project

Commit Graph

Author	SHA1	Message	Date
Matt Arsenault	3a61985b2f	AMDGPU: More bits of frame index are known to be zero The maximum private allocation for the whole GPU is 4G, so the maximum possible index for a single workitem is the maximum size divided by the smallest granularity for a dispatch. This increases the number of known zero high bits, which enables more offset folding. The maximum private size per workitem with this is 128M but may be smaller still. llvm-svn: 262153	2016-02-27 20:26:57 +00:00
Matt Arsenault	f2ddbf00ed	AMDGPU: Prepare for reducing private element size. Tests for the new scalarize all private access options will be included with a future commit. The only functional change is to make the split/scalarize behavior for private access of > 4 element vectors to be consistent with the flat/global handling. This makes the spilling worse in the two changed tests. llvm-svn: 260804	2016-02-13 04:18:53 +00:00

Author

SHA1

Message

Date

Matt Arsenault

3a61985b2f

AMDGPU: More bits of frame index are known to be zero

The maximum private allocation for the whole GPU is 4G,
so the maximum possible index for a single workitem is the
maximum size divided by the smallest granularity for a dispatch.

This increases the number of known zero high bits, which
enables more offset folding. The maximum private size per
workitem with this is 128M but may be smaller still.

llvm-svn: 262153

2016-02-27 20:26:57 +00:00

Matt Arsenault

f2ddbf00ed

AMDGPU: Prepare for reducing private element size.

Tests for the new scalarize all private access options will be
included with a future commit.

The only functional change is to make the split/scalarize behavior
for private access of > 4 element vectors to be consistent
with the flat/global handling. This makes the spilling worse
in the two changed tests.

llvm-svn: 260804

2016-02-13 04:18:53 +00:00

2 Commits