Commit Graph

3 Commits

Author SHA1 Message Date
Matt Arsenault
c9c70b1651 R600/SI: Implement areLoadsFromSameBasePtr
This currently has a noticable effect on the kernel argument loads.
LDS and global loads are more problematic, I think because of how copies
are currently inserted to ensure that the address is a VGPR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214942 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-06 00:29:43 +00:00
Tom Stellard
40e455d992 R600/SI: Custom lower SI_IF and SI_ELSE to avoid machine verifier errors
SI_IF and SI_ELSE are terminators which also produce a value.  For
these instructions ISel always inserts a COPY to move their value
to another basic block.  This COPY ends up between SI_(IF|ELSE)
and the S_BRANCH* instruction at the end of the block.

This breaks MachineBasicBlock::getFirstTerminator() and also the
machine verifier which assumes that terminators are grouped together at
the end of blocks.

To solve this we coalesce the copy away right after ISel to make sure
there are no instructions in between terminators at the end of blocks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207591 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-29 23:12:53 +00:00
Matt Arsenault
6cd6974e56 R600: Add a test that used to be broken that I forgot to add
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207017 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-23 19:45:05 +00:00