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7177 Commits

Author SHA1 Message Date
Dale Johannesen
454b9243bd Teach InstCombine not to use Add and Neg on FP. PR 8490. 
llvm-svn: 117510
 2010-10-27 23:45:18 +00:00
Dan Gohman
96e34e87ca Fix a case where instcombine was stripping metadata (and alignment) 
from stores when folding in bitcasts.

llvm-svn: 117265
 2010-10-25 16:16:27 +00:00
Duncan Sands
5b25503aab Fix PR8445: a block with no predecessors may be the entry block, in which case 
it isn't unreachable and should not be zapped.  The check for the entry block
was missing in one case: a block containing a unwind instruction.  While there,
do some small cleanups: "M" is not a great name for a Function* (it would be
more appropriate for a Module*), change it to "Fn"; use Fn in more places.

llvm-svn: 117224
 2010-10-24 12:23:30 +00:00
Benjamin Kramer
86b0370b66 SmallVectorize. 
llvm-svn: 117213
 2010-10-23 17:10:24 +00:00
Chandler Carruth
7799a873bb Switch attribute macros to use 'LLVM_' as a prefix. We retain the old names 
until other LLVM projects using these are cleaned up.

llvm-svn: 117200
 2010-10-23 08:10:43 +00:00
Bob Wilson
0290dbe7d4 Teach instcombine to set the alignment arguments for NEON load/store intrinsics. 
llvm-svn: 117154
 2010-10-22 21:41:48 +00:00
Duncan Sands
f7cfeda351 RetOp is not actually used for anything useful (though 
it looks like maybe it was supposed to be used in the
test...), so zap it (gcc-4.6 warning).

llvm-svn: 117023
 2010-10-21 16:05:44 +00:00
Dan Gohman
befe1767ff Reapply r116831 and r116839, converting AliasAnalysis to use 
uint64_t, plus fixes for places I missed before.

llvm-svn: 116875
 2010-10-19 22:54:46 +00:00
Dan Gohman
de3c49438f Revert r116831 and r116839, which are breaking selfhost builds. 
llvm-svn: 116858
 2010-10-19 21:06:16 +00:00
Owen Anderson
deee1e18f1 Passes do not need to recursively initialize passes that they preserve, if 
they do not also require them.  This allows us to reduce inter-pass linkage
dependencies.

llvm-svn: 116854
 2010-10-19 20:08:44 +00:00
Dan Gohman
37a9b813f5 Oops, check in all the files for converting AliasAnalysis to 
use uint64_t.

llvm-svn: 116839
 2010-10-19 18:08:27 +00:00
Owen Anderson
46990c17f7 Get rid of static constructors for pass registration. Instead, every pass exposes an initializeMyPassFunction(), which 
must be called in the pass's constructor.  This function uses static dependency declarations to recursively initialize
the pass's dependencies.

Clients that only create passes through the createFooPass() APIs will require no changes.  Clients that want to use the
CommandLine options for passes will need to manually call the appropriate initialization functions in PassInitialization.h
before parsing commandline arguments.

I have tested this with all standard configurations of clang and llvm-gcc on Darwin.  It is possible that there are problems
with the static dependencies that will only be visible with non-standard options.  If you encounter any crash in pass
registration/creation, please send the testcase to me directly.

llvm-svn: 116820
 2010-10-19 17:21:58 +00:00
Dan Gohman
6e3755905e Consistently use AliasAnalysis::UnknownSize instead of hardcoding ~0u. 
llvm-svn: 116815
 2010-10-19 17:06:23 +00:00
Mikhail Glushenkov
0c09a4b97f GlobalOpt: EvaluateFunction() must not evaluate stores to weak_odr globals. 
Fixes PR8389.

llvm-svn: 116812
 2010-10-19 16:47:23 +00:00
Mikhail Glushenkov
48553997d2 Trailing whitespace. 
llvm-svn: 116749
 2010-10-18 21:16:00 +00:00
Dan Gohman
64affb7be2 Make AliasSetTracker TBAA-aware, enabling TBAA-enabled LICM. 
llvm-svn: 116743
 2010-10-18 20:44:50 +00:00
Devang Patel
dbe2dbee5b Transfer debug loc to lowered call. 
Patch by Alexander Herz!

llvm-svn: 116733
 2010-10-18 18:53:44 +00:00
Benjamin Kramer
a0e156fe6d Eliminate some calls to Value::getNameStr. 
llvm-svn: 116670
 2010-10-16 11:28:23 +00:00
Owen Anderson
4373b4516b Generalize MemCpyOpt's handling of call slot forwarding to function properly when the call slot 
forwarding is implemented with a load/store pair rather than a memcpy.

llvm-svn: 116637
 2010-10-15 22:52:12 +00:00
Owen Anderson
c6c23bbf04 CallGraphSCC passes implicity require CallGraph analysis. 
llvm-svn: 116443
 2010-10-13 22:00:45 +00:00
Rafael Espindola
16d5617ec3 Fix PR8313 by changing ValueToValueMap use a TrackingVH. 
llvm-svn: 116390
 2010-10-13 02:08:17 +00:00
Rafael Espindola
aa5448f520 Be more consistent in using ValueToValueMapTy. 
llvm-svn: 116387
 2010-10-13 01:36:30 +00:00
Owen Anderson
63f757463c Begin adding static dependence information to passes, which will allow us to 
perform initialization without static constructors AND without explicit initialization
by the client.  For the moment, passes are required to initialize both their
(potential) dependencies and any passes they preserve.  I hope to be able to relax
the latter requirement in the future.

llvm-svn: 116334
 2010-10-12 19:48:12 +00:00
Kenneth Uildriks
e9771f15f7 Now using a variant of the existing inlining heuristics to decide whether to create a given specialization of a function in PartialSpecialization. If the total performance bonus across all callsites passing the same constant exceeds the specialization cost, we create the specialization. 
llvm-svn: 116158
 2010-10-09 22:06:36 +00:00
Dan Gohman
d64a33ade4 Filter out illegal formulae after updating offsets, not before, so that 
formulae which become illegal as a result of the offset updating don't
escape.

This is for rdar://8529692. No testcase yet, because the given cases
hit use-list ordering differences.

llvm-svn: 116093
 2010-10-08 19:33:26 +00:00
Daniel Dunbar
8b2890afae Update CMake. 
llvm-svn: 116034
 2010-10-08 02:30:03 +00:00
Dan Gohman
27e145fc97 Delete the FormulaSorter class and inline its one method into its 
one user. This code will be restructured soon and FormulaSorter
is getting in the way.

llvm-svn: 116012
 2010-10-07 23:52:18 +00:00
Dan Gohman
9b55022e83 Fix a spello. 
llvm-svn: 116011
 2010-10-07 23:43:09 +00:00
Dan Gohman
d8eb76e4e8 Charge a formula for explicit multiplies on scaled registers too, 
not just base registers.

llvm-svn: 116010
 2010-10-07 23:41:58 +00:00
Dan Gohman
aa2c086eb9 Use size_t for consistency. 
llvm-svn: 116009
 2010-10-07 23:37:58 +00:00
Dan Gohman
8cc92ffff1 When merging one use into another, transfer the offsets from 
the old use to the new one.

llvm-svn: 116008
 2010-10-07 23:36:45 +00:00
Dan Gohman
b8c38d92e4 Fix LSR to keep the RegUseTracker up to date when combining users. 
This doesn't usually matter, because the other heuristics usually
succeed regardless, but it's good to keep the register use
bookkeeping consistent.

llvm-svn: 116005
 2010-10-07 23:33:43 +00:00
Devang Patel
35201e0fd6 Remove LoopIndexSplit pass. It is neither maintained nor used by anyone. 
llvm-svn: 116004
 2010-10-07 23:29:37 +00:00
Owen Anderson
69cbf2e8b7 Now with fewer extraneous semicolons! 
llvm-svn: 115996
 2010-10-07 22:25:06 +00:00
Owen Anderson
d07798cef0 Add initialization routines for Instrumentation. 
llvm-svn: 115971
 2010-10-07 20:17:24 +00:00
Owen Anderson
8adf6f2759 Add initialization routines to InstCombine. 
llvm-svn: 115965
 2010-10-07 20:04:55 +00:00
Owen Anderson
ec9ec036a4 Add an initialization routine for libLLVMipo.a 
llvm-svn: 115933
 2010-10-07 18:09:59 +00:00
Owen Anderson
4a9acfa34a Next step on the getting-rid-of-static-ctors train: begin adding per-library 
initialization functions that initialize the set of passes implemented in
that library.  Add C bindings for these functions as well.

llvm-svn: 115927
 2010-10-07 17:55:47 +00:00
Owen Anderson
a8a7bf484f Move the pass initialization helper functions into the llvm namespace, and add 
a header declaring them all.  This is also where we will declare per-library pass-set
initializer functions down the road.

llvm-svn: 115900
 2010-10-07 04:13:08 +00:00
Owen Anderson
3bc77c4154 Since the Hello pass is built as a loadable dynamic library, don't try to convert it to new-style registration yet. 
llvm-svn: 115881
 2010-10-07 00:31:16 +00:00
Owen Anderson
a88628cd72 Now that the profitable bits of EnableFullLoadPRE have been enabled by default, rip out the remainder. 
Anyone interested in more general PRE would be better served by implementing it separately, to get real
anticipation calculation, etc.

llvm-svn: 115337
 2010-10-01 20:02:55 +00:00
Eric Christopher
792e8112b0 Fix the other half of the alignment changing issue by making sure that the 
memcpy alignment is the minimum of the incoming alignments.

Fixes PR 8266.

llvm-svn: 115305
 2010-10-01 09:02:05 +00:00
Chris Lattner
bf0f375aba fix PR8267 - Instcombine shouldn't optimizer away volatile memcpy's. 
llvm-svn: 115296
 2010-10-01 05:51:02 +00:00
Dale Johannesen
c14a1eda84 Massive rewrite of MMX: 
The x86_mmx type is used for MMX intrinsics, parameters and
return values where these use MMX registers, and is also
supported in load, store, and bitcast.

Only the above operations generate MMX instructions, and optimizations
do not operate on or produce MMX intrinsics. 

MMX-sized vectors <2 x i32> etc. are lowered to XMM or split into
smaller pieces.  Optimizations may occur on these forms and the
result casted back to x86_mmx, provided the result feeds into a
previous existing x86_mmx operation.

The point of all this is prevent optimizations from introducing
MMX operations, which is unsafe due to the EMMS problem.

llvm-svn: 115243
 2010-09-30 23:57:10 +00:00
Owen Anderson
5adba2c2ff We do want to allow LoadPRE to perform LICM-like transformations: we already consider PHI nodes to be negligible for 
code size (making this transform code size neutral), and it allows us to hoist values out of loops, which is always
a good thing.

llvm-svn: 115205
 2010-09-30 20:53:04 +00:00
Jakob Stoklund Olesen
603950c4af Try again to disable critical edge splitting in CodeGenPrepare. 
The bug that broke i386 linux has been fixed in r115191.

llvm-svn: 115204
 2010-09-30 20:51:52 +00:00
Benjamin Kramer
d1710d7fb3 Tighten up prototype verification of strchr and strrchr to avoid a crash in the very unlikely case that someone passes an integer > i64 to strchr. 
llvm-svn: 115144
 2010-09-30 11:21:59 +00:00
Benjamin Kramer
2a44a539e2 Add constant folding for strspn and strcspn to SimplifyLibCalls. 
llvm-svn: 115116
 2010-09-30 00:58:35 +00:00
Benjamin Kramer
476bfb7a10 Add strpbrk folding to SimplifyLibCalls. 
llvm-svn: 115111
 2010-09-29 23:52:12 +00:00
Benjamin Kramer
cec2603ec2 Simplify the loop in StrChrOptimizer. FileCheckize test. 
llvm-svn: 115095
 2010-09-29 22:29:12 +00:00