Commit Graph

19 Commits

Author SHA1 Message Date
Evan Cheng
835580fc3a Canonicalize X86ISD::MOVDDUP nodes to v2f64 to make sure all cases match. Also eliminate unneeded isel patterns. rdar://8520311
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115977 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-07 20:50:20 +00:00
Dan Gohman
fe5e4dabbf Teach EmitLiveInCopies to omit copies for unused virtual registers,
and to clean up unused incoming physregs from the live-in list.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106805 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-24 22:23:02 +00:00
Jakob Stoklund Olesen
bfcd61b907 Enable -sse-domain-fix by default. Now with tests!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99954 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-30 22:47:00 +00:00
Evan Cheng
bdc652bab8 Turning off post-ra scheduling for x86. It isn't a consistent win.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98810 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-18 06:55:42 +00:00
Chris Lattner
d1b7382983 Fix some issues in WalkChainUsers dealing with
CopyToReg/CopyFromReg/INLINEASM.  These are annoying because
they have the same opcode before an after isel.  Fix this by
setting their NodeID to -1 to indicate that they are selected,
just like what automatically happens when selecting things that
end up being machine nodes.

With that done, give IsLegalToFold a new flag that causes it to
ignore chains.  This lets the HandleMergeInputChains routine be
the one place that validates chains after a match is successful,
enabling the new hotness in chain processing.  This smarter
chain processing eliminates the need for "PreprocessRMW" in the
X86 and MSP430 backends and enables MSP to start matching it's
multiple mem operand instructions more aggressively.

I currently #if out the dead code in the X86 backend and MSP 
backend, I'll remove it for real in a follow-on patch.

The testcase changes are:
  test/CodeGen/X86/sse3.ll: we generate better code
  test/CodeGen/X86/store_op_load_fold2.ll: PreprocessRMW was 
      miscompiling this before, we now generate correct code
      Convert it to filecheck while I'm at it.
  test/CodeGen/MSP430/Inst16mm.ll: Add a testcase for mem/mem
      folding to make anton happy. :)




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97596 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 22:20:06 +00:00
Evan Cheng
00a99a3584 Run codegen dce pass for all targets at all optimization levels. Previously it's
only run for x86 with fastisel. I've found it being very effective in
eliminating some obvious dead code as result of formal parameter lowering
especially when tail call optimization eliminated the need for some of the loads
from fixed frame objects. It also shrinks a number of the tests. A couple of
tests no longer make sense and are now eliminated.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95493 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-06 09:07:11 +00:00
Dan Gohman
d84ea47b89 Don't enable the post-RA scheduler on x86 except at -O3. In its
current form, it is too expensive in compile time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90781 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-07 19:04:31 +00:00
Eric Christopher
761411c21b Fix a couple of shuffle patterns to use movhlps instead
of movhps as the constraint.  Changes optimizations so
update testcases as appropriate as well.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86360 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-07 08:45:53 +00:00
Evan Cheng
b6c215b63f Update tests for 84931.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84932 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-23 05:58:34 +00:00
David Goodwin
4c3715c2e5 Allow the target to select the level of anti-dependence breaking that should be performed by the post-RA scheduler. The default is none.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84911 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-22 23:19:17 +00:00
Dan Gohman
c1ae8c9b8f Revert r84658 and r84691. They were causing llvm-gcc bootstrap to fail.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84727 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-21 01:44:44 +00:00
David Goodwin
480c529e02 Checkpoint more aggressive anti-dependency breaking for post-ra scheduler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84658 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-20 19:54:44 +00:00
Evan Cheng
d36076e4a3 Turn on post-alloc scheduling for x86.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84431 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-18 19:57:27 +00:00
Dan Gohman
36a0947820 Eliminate more uses of llvm-as and llvm-dis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81290 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-08 23:54:48 +00:00
Chris Lattner
d842962e27 change selectiondag to add the sign extended versions of immediate operands
to instructions instead of zero extended ones.  This makes the asmprinter
print signed values more consistently.  This apparently only really affects
the X86 backend.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81265 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-08 23:05:44 +00:00
Chris Lattner
d04fee1e2b specify a target triple so global variable manglings are consistent etc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79118 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-15 17:35:05 +00:00
Chris Lattner
8e1fad4bb7 merge a bunch more sse3 tests into sse3.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79115 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-15 17:21:44 +00:00
Chris Lattner
075ee999d3 convert test to filecheck format.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79114 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-15 17:05:03 +00:00
Chris Lattner
bd0463098b rename test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79113 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-15 17:01:44 +00:00