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3 Commits

Author SHA1 Message Date
Matt Arsenault
14a4d319dd AMDGPU: Add some private element size tests 
llvm-svn: 269712
 2016-05-16 22:17:27 +00:00
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