f5b32e52db
SplitBlockPredecessors uses ArrayRef instead of Data and Size.
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llvm-svn: 146277
2011-12-09 21:19:53 +00:00
d04d152998
Add -unroll-runtime for unrolling loops with run-time trip counts.
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Patch by Brendon Cahoon!
This extends the existing LoopUnroll and LoopUnrollPass. Brendon
measured no regressions in the llvm test suite with -unroll-runtime
enabled. This implementation works by using the existing loop
unrolling code to unroll the loop by a power-of-two (default 8). It
generates an if-then-else sequence of code prior to the loop to
execute the extra iterations before entering the unrolled loop.
llvm-svn: 146245
2011-12-09 06:19:40 +00:00
fe970725cc
Fix infinite loop in DSE when deleting a free in a reachable loop that's also
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trivially infinite.
llvm-svn: 146197
2011-12-08 22:36:35 +00:00
b3bd019cd7
Push StringRefs through the metadata interface.
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llvm-svn: 145934
2011-12-06 11:50:26 +00:00
5df9096584
LSR: prune undesirable formulae early.
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It's always good to prune early, but formulae that are unsatisfactory
in their own right need to be removed before running any other pruning
heuristics. We easily avoid generating such formulae, but we need them
as an intermediate basis for forming other good formulae.
llvm-svn: 145906
2011-12-06 03:13:31 +00:00
3277557741
Update comment.
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llvm-svn: 145866
2011-12-05 22:53:09 +00:00
19446a07a7
Make the MemCpyOptimizer a bit more aggressive. I can't think of a scenerio
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where this would be bad as the backend shouldn't have a problem inlining small
memcpys.
rdar://10510150
llvm-svn: 145865
2011-12-05 22:37:00 +00:00
3924cb0267
Add support for vectors of pointers.
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llvm-svn: 145801
2011-12-05 06:29:09 +00:00
e03fe83d98
Fixed deadstoreelimination bug where negative indices were incorrectly causing the optimisation to occur
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Turns out long long + unsigned long long is unsigned. Doh!
Fixes http://llvm.org/bugs/show_bug.cgi?id=11455
llvm-svn: 145731
2011-12-03 00:04:30 +00:00
43a33066b4
Fix a few more places where TargetData/TargetLibraryInfo is not being passed.
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Add FIXMEs to places that are non-trivial to fix.
llvm-svn: 145661
2011-12-02 01:26:24 +00:00
e6de63dfc5
Last bit of TargetLibraryInfo propagation. Also fixed a case for TargetData
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where it appeared beneficial to pass.
More of rdar://10500969
llvm-svn: 145630
2011-12-01 21:29:16 +00:00
c24b86ffbe
Propagate TargetLibraryInfo throughout ConstantFolding.cpp and
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InstructionSimplify.cpp. Other fixups as needed.
Part of rdar://10500969
llvm-svn: 145559
2011-12-01 03:08:23 +00:00
6cff9df298
Make GlobalMerge honor the preferred alignment on globals without an explicitly specified alignment.
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<rdar://problem/10497732>.
llvm-svn: 145523
2011-11-30 21:54:15 +00:00
31798ef3c0
Potential bug in RewriteLoopBodyWithConditionConstant: use iterator should not be changed inside the uses enumeration loop.
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llvm-svn: 145432
2011-11-29 20:34:39 +00:00
539d0a8a09
build/CMake: Finish removal of add_llvm_library_dependencies.
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llvm-svn: 145420
2011-11-29 19:25:30 +00:00
d25089f8e0
SCEV fix. In general, Add/Mul expressions should not inherit NSW/NUW.
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This reverts r139450, fixes r139453, and adds much needed comments and a
unit test.
llvm-svn: 145367
2011-11-29 02:16:38 +00:00
a8bdb7cbf1
Remove the temporary flag -disable-unroll-scev and dead code.
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SCEV should now be used for trip count analysis, not LoopInfo.
llvm-svn: 145262
2011-11-28 19:22:09 +00:00
7ba71be392
Move code into anonymous namespaces.
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llvm-svn: 145154
2011-11-26 23:01:57 +00:00
612d70b19d
Refactor code to use new attribute getters on CallSite for NoCapture and ByVal.
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Suggested in code review by Eli.
That code in InstCombine looks kinda suspicious.
llvm-svn: 145013
2011-11-20 19:09:04 +00:00
489c0ff4a4
Add support for custom names for library functions in TargetLibraryInfo. Add a custom name for fwrite and fputs on x86-32 OSX. Make SimplifyLibCalls honor the custom
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names for fwrite and fputs.
Fixes <rdar://problem/9815881>.
llvm-svn: 144876
2011-11-17 01:27:36 +00:00
c7f1e7993c
Merge isObjectPointerWithTrustworthySize with getPointerSize. Use it when
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looking at the size of the pointee. Fixes PR11390!
llvm-svn: 144773
2011-11-16 03:49:48 +00:00
51f71054b6
Fix MSVC warnings by adding a cast.
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llvm-svn: 144721
2011-11-15 22:54:21 +00:00
b106bcc536
StringRefize and simplify.
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llvm-svn: 144675
2011-11-15 19:12:09 +00:00
ecb453805d
Make sure scalarrepl picks the correct alloca when it rewrites a bitcast. Fixes PR11353.
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llvm-svn: 144442
2011-11-12 02:07:50 +00:00
0a309292c4
Get rid of an optimization in SCCP which appears to have many issues. Specifically, it doesn't handle many cases involving undef correctly, and it is missing other checks which
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lead to it trying to re-mark a value marked as a constant with a different value. It also appears to trigger very rarely.
Fixes PR11357.
llvm-svn: 144352
2011-11-11 01:16:15 +00:00
a4237c380e
Fixed bug in DeadStoreElimination commit r144239
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Size of data being pointed to wasn't always being checked so some small writes were killing big writes
Fixes <rdar://problem/10426753>
llvm-svn: 144312
2011-11-10 20:22:08 +00:00
856977cb15
DeadStoreElimination can now trim the size of a store if the end of the store is dead.
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Currently checks alignment and killing stores on a power of 2 boundary as this is likely
to trim the size of the earlier store without breaking large vector stores into scalar ones.
Fixes <rdar://problem/10140300>
llvm-svn: 144239
2011-11-09 23:07:35 +00:00
9ee220915b
LICM pass now understands invariant load metadata. Nothing generates this yet so it will currently never get used in real tests
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llvm-svn: 144107
2011-11-08 19:30:00 +00:00
f2905afe62
Do simple cross-block DSE when we encounter a free statement. Fixes PR11240.
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llvm-svn: 143808
2011-11-05 10:48:42 +00:00
e6d40de414
Speculatively revert "DeadStoreElimination can now trim the size of a store if
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the end of it is dead.", which appears to break bootstrapping LLVM.
llvm-svn: 143668
2011-11-04 00:48:26 +00:00
bf9bba47a1
build: Add initial cut at LLVMBuild.txt files.
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llvm-svn: 143634
2011-11-03 18:53:17 +00:00
8a95aedb5d
DeadStoreElimination can now trim the size of a store if the end of it is dead.
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Only currently done if the later store is writing to a power of 2 address or
has the same alignment as the earlier store as then its likely to not break up
large stores into smaller ones
Fixes <rdar://problem/10140300>
llvm-svn: 143630
2011-11-03 18:01:56 +00:00
c2c79c90f2
Rewrite LinearFunctionTestReplace to handle pointer-type IVs.
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We've been hitting asserts in this code due to the many supported
combintions of modes (iv-rewrite/no-iv-rewrite) and IV types. This
second rewrite of the code attempts to deal with these cases systematically.
llvm-svn: 143546
2011-11-02 17:19:57 +00:00
9dba8af074
Add parentheses to disambiguate the precedence of these operations and
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silence -Wparentheses.
llvm-svn: 143534
2011-11-02 05:43:44 +00:00
0dae890346
Broaden an assert to handle enable-iv-rewrite=true following r143183.
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Narrowest possible fix for PR11279.
llvm-svn: 143522
2011-11-02 00:02:45 +00:00
594ee77964
SimplifyLibCalls: Use IRBuilder.CreateGlobalString when creating a string for printf->puts, which correctly sets the unnamed_addr bit on the resulting GlobalVariable.
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Fixes PR11264.
llvm-svn: 143289
2011-10-29 19:43:31 +00:00
effdca9441
LFTR should avoid a type mismatch with null pointer IVs.
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Fixes rdar://10359193 Indvar LinearFunctionTestReplace assertion
llvm-svn: 143183
2011-10-28 03:45:11 +00:00
73beaf7bbc
It is not safe to sink an alloca into a stacksave/stackrestore pair, so don't do that. <rdar://problem/10352360>
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llvm-svn: 143093
2011-10-27 01:33:51 +00:00
057fbb1a10
The element insertion code in scalar replacement doesn't handle incorrect
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element types, even though the element extraction code does. It is surprising
that this bug has been here for so long. Fixes <rdar://problem/10318778>.
llvm-svn: 142740
2011-10-23 07:02:10 +00:00
32f8051d66
A non-escaping malloc in the entry block is not unlike an alloca. Do dead-store
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elimination on them too.
llvm-svn: 142735
2011-10-22 21:59:35 +00:00
88b4fa21c8
Initialze ScalarEvalution dependency.
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Patch by Pranav Bhandarkar!
llvm-svn: 142556
2011-10-19 23:56:07 +00:00
a7107f992e
Teach the ARC optimizer about the !clang.arc.copy_on_escape metadata
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tag on objc_retainBlock calls, which indicates that they may be
optimized away. rdar://10211286.
llvm-svn: 142298
2011-10-17 22:53:25 +00:00
1736c14b85
Suppress partial retain+release elimination when there's a
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possibility that it will span multiple CFG diamonds/triangles which
could have different controlling predicates. rdar://10282956
llvm-svn: 142222
2011-10-17 18:48:25 +00:00
63a4ea1859
Correct over-zealous removal of hack.
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Some code want to check that *any* call within a function has the 'returns
twice' attribute, not just that the current function has one.
llvm-svn: 142221
2011-10-17 18:43:40 +00:00
2a83a71c2a
Now that we have the ReturnsTwice function attribute, this method is
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obsolete. Check the attribute instead.
<rdar://problem/8031714>
llvm-svn: 142212
2011-10-17 18:22:52 +00:00
0050f59665
Fix CMake build.
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llvm-svn: 142204
2011-10-17 17:50:39 +00:00
76c8563239
svn mv Target/ARM/ARMGlobalMerge.cpp Transforms/Scalar/GlobalMerge.cpp
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There is no reason to have simple IR level pass in lib/Target.
llvm-svn: 142200
2011-10-17 17:17:43 +00:00
0a7e9ccf04
When looking for dependencies on the src pointer, scan the src pointer. Scanning
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on the memcpy call will pull up other unrelated stuff. Fixes PR11142.
llvm-svn: 142150
2011-10-16 20:13:32 +00:00
f537a6edd4
Don't replace all dominated uses if there is only one use, since that
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use can't be dominated, saving one domtree lookup.
llvm-svn: 142066
2011-10-15 11:13:42 +00:00
d50861c831
Fix indvars randomness by removing iteration over a map.
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I rewrote the algorithm a while back so it doesn't require map lookup,
but neglected to change the data structure. This was caught by
llvm-gcc self host, not because there's anything special about
llvm-gcc, but because it is the only test for nondeterminism we
currently have. Unit tests don't work well for everything; we should
always try to have a nondeterminism stress test running.
Fixes PR11133: llvm-gcc self host .o mismatch after enable-iv-rewrite=false
llvm-svn: 142036
2011-10-15 01:38:14 +00:00
Jakub Staszak