Bill Wendling
15db556b56
Update to new EH scheme.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138927 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-01 01:02:41 +00:00
Bill Wendling
aeaa9a8b25
Update some tests to the new EH scheme.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138925 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-01 00:58:03 +00:00
Bill Wendling
b5d92d83b4
Reenable test.
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2011-08-31 23:08:05 +00:00
Bill Wendling
3b5e99d79e
Revert accidental commit
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138915 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-31 23:07:46 +00:00
Eli Friedman
1b73866505
Disable this test until Bill fixes it properly.
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2011-08-31 23:03:30 +00:00
Bill Wendling
08c2862540
Update to new EH scheme.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138908 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-31 21:50:07 +00:00
Bill Wendling
935903191f
Update more tests to the new EH scheme.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138903 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-31 21:39:05 +00:00
Eli Friedman
24adac8b79
Add tests for the transformations SCCP can do on atomic loads and stores (which are safe without any modifications).
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138902 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-31 21:37:06 +00:00
Bill Wendling
ab98f9d155
Update more tests to the new EH scheme.
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2011-08-31 21:04:11 +00:00
Bill Wendling
b072dd9ba4
Update the tests to the new EH scheme.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138891 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-31 20:55:40 +00:00
Rafael Espindola
f940a1a869
Remove the old tail duplication pass. It is not used and is unable to update
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ssa, so it has to be run really early in the pipeline. Any replacement
should probably use the SSAUpdater.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138841 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-30 23:03:45 +00:00
Owen Anderson
1333abc785
Remove empty file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138830 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-30 21:17:20 +00:00
Owen Anderson
54c4735db3
Speculatively revert r138809 in an attempt to fix DragonEgg.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138829 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-30 21:11:06 +00:00
Owen Anderson
6e4be237b0
When walking backwards to eliminate final stores to allocas at the end of a function, encountering an unrelated store should not cause us to give up like encountering a load does.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138809 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-30 18:51:55 +00:00
Bill Wendling
6af6824eb4
Update tests to new EH model. Add landingpad instructions to landing pads.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138759 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-29 20:39:23 +00:00
Nadav Rotem
89879ec76b
Fixes following the CR by Chris and Duncan:
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Optimize chained bitcasts of the form A->B->A.
Undo r138722 and change isEliminableCastPair to allow this case.
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2011-08-29 19:58:36 +00:00
Nadav Rotem
be6ceb6ebc
Bitcasts are transitive. Bitcast-Bitcast-X becomes Bitcast-X.
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2011-08-28 11:51:08 +00:00
Bill Wendling
df77a71790
Auto upgrade the old EH scheme to use the new one. This is on a trial basis. If
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things to disasterously over night, this can be reverted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138702 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-27 06:11:03 +00:00
Bill Wendling
2b18881185
Don't sink landingpad instructions during ind-var simplification.
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2011-08-26 20:40:15 +00:00
Andrew Trick
6ca06cd8a8
Use %% for literals in RUN lines.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138647 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26 20:09:48 +00:00
Benjamin Kramer
98d6d2372f
SimplifyCFG: If we have a PHI node that can evaluate to NULL and do a load or store to the address returned by the PHI node then we can consider this incoming value as dead and remove the edge pointing there, unless there are instructions that can affect control flow executed in between.
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In theory this could be extended to other instructions, eg. division by zero, but it's likely that it will "miscompile" some code because people depend on div by zero not trapping. NULL pointer dereference usually leads to a crash so we should be on the safe side.
This shrinks the size of a Release clang by 16k on x86_64.
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2011-08-26 01:22:29 +00:00
Nadav Rotem
4c7c0f2353
Implement Constant::isAllOnesValue(). Fix ConstantFolding to use the new api.
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2011-08-24 20:18:38 +00:00
Eric Christopher
acc8f2d938
Revert "Address Duncan's CR request:"
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This reverts commit 20a05be15e
. (svn rev 138340)
Conflicts:
test/Transforms/InstCombine/bitcast.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138366 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-23 20:11:10 +00:00
Nadav Rotem
46634f5f92
Fix a typo in the test from the previous commit.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138342 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-23 17:56:54 +00:00
Nadav Rotem
20a05be15e
Address Duncan's CR request:
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1. Cleanup the tests in ConstantFolding.cpp
2. Implement isAllOnes for Constant, ConstantFP, ConstantVector
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138340 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-23 17:48:43 +00:00
Dan Gohman
1b31ea8f93
Constant pointers to objects don't need reference counting.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138242 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-22 17:29:11 +00:00
Dan Gohman
986b865c03
Make a few tests slightly more strict.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138241 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-22 17:27:02 +00:00
Nadav Rotem
1c9fe0361b
Add constant folding support for bitcasts of splat vectors to integers.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138206 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-20 14:02:29 +00:00
Eric Christopher
a510a1c931
Add file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138083 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-19 21:21:20 +00:00
Dan Gohman
e6d5e88c12
Track a retain+release nesting level independently of the
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known-incremented level, because the two concepts can be used
to prove the saftey of a retain+release removal in different
ways.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138016 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-19 00:26:36 +00:00
Eli Friedman
56efe24431
Atomic load/store handling for the passes using memdep (GVN, DSE, memcpyopt).
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137888 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-17 22:22:24 +00:00
Eli Friedman
447f95202a
Silly mistake from r137777; restore significant isStructTy() checks. While here, be a bit more defensive
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with unknown instructions.
Fixes PR10687.
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2011-08-17 18:10:43 +00:00
Eli Friedman
bfd5040ddc
An additional atomic test; related to r137662.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137786 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-16 23:29:17 +00:00
Eli Friedman
054ddf799b
A bunch of misc fixes to SCCPSolver::ResolvedUndefsIn, including a fix to stop
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making random bad assumptions about instructions which are not explicitly listed.
Includes fix for rdar://9956541, a version of "undef ^ undef should return
0 because it's easier than arguing with users".
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2011-08-16 22:06:31 +00:00
Eli Friedman
1fc291f0d3
Minor bug in SCCP found by inspection. (I don't think it's possible to hit this with a normal pass pipeline, but fixing for completeness.)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137755 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-16 21:12:35 +00:00
Eli Friedman
34fd67c7bc
Fix test.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137703 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-16 01:42:56 +00:00
Eli Friedman
2199dfb0e6
Revert a bit of r137667; the logic in question can safely handle atomic load/store.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137702 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-16 01:28:22 +00:00
Eric Christopher
89a01a0cbd
Migrate this test from llvm/test/FrontendC++/ptr-to-method-devirt.cpp and
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FileCheckize. It is more properly an optimizer test.
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2011-08-16 01:17:17 +00:00
Eli Friedman
8176388d65
Update SimplifyCFG for atomic operations.
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This commit includes a mention of the landingpad instruction, but it's not
changing the behavior around it. I think the current behavior is correct,
though. Bill, can you double-check that?
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137691 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-15 23:59:28 +00:00
Eli Friedman
fd06b3cfa1
Add comments and test for atomic load/store and mem2reg.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137690 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-15 23:55:52 +00:00
Eli Friedman
cc4a0435b7
Update instcombine for atomic load/store.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137664 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-15 22:09:40 +00:00
Eli Friedman
97671565ff
Atomic load/store support in LICM.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137648 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-15 20:52:09 +00:00
Eric Christopher
f000957aad
Add an ipsccp test. Migrated from test/FrontendC++.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137646 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-15 20:50:36 +00:00
Nick Lewycky
28b84ff4ce
This transform is not safe. Thanks to Eli for pointing that out!
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2011-08-14 04:51:49 +00:00
Nick Lewycky
7f0170c197
Don't attempt to add 'nsw' when intermediate instructions had no such guarantee.
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2011-08-14 03:41:33 +00:00
Nick Lewycky
daf27ea899
Teach instcombine to preserve the nsw bit by doing an after-the-fact analysis
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when combining add and sub instructions. Patch by Pranav Bhandarkar!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137570 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-14 01:45:19 +00:00
Eli Friedman
f03bb260c9
Move "atomic" and "volatile" designations on instructions after the opcode
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of the instruction.
Note that this change affects the existing non-atomic load and store
instructions; the parser now accepts both forms, and the change is noted
in the release notes.
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2011-08-12 22:50:01 +00:00
Dan Gohman
126a54f1fa
Don't convert objc_autoreleaseReturnValue to objc_autorelease if the result
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is returned through a bitcast.
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2011-08-12 00:36:31 +00:00
Dan Gohman
a7f7db2ebd
Don't let arbitrary calls disrupt nested retain+release pairs if
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the retains and releases all use the same SSA pointer value.
Also, don't let CFG hazards disrupt nested retain+release pair
optimizations.
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2011-08-12 00:26:31 +00:00
Andrew Trick
30039de2e9
A slew of unit tests for the recent LoopInfo::updateUnloop feature
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checked in at r137276 and r137341.
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2011-08-11 23:38:09 +00:00