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05e65cf9e4
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2267 Commits

Author SHA1 Message Date
Dan Gohman
05e65cf9e4 Make the code that updates ScalarEvolution's internal state in response 
to a loop deletion more thorough. Don't prune the def-use tree search at
instructions that don't have SCEVs computed, because an instruction with
a user that has a computed SCEV may itself lack a computed SCEV.  Also,
remove loop-related values from the ValuesAtScopes and
ConstantEvolutionLoopExitValues maps as well.

This fixes a regression in 483.xalancbmk.

llvm-svn: 75030
 2009-07-08 19:23:34 +00:00
Owen Anderson
332aae685b Switch GlobalVariable ctors to a sane API, where *either* a context or a module is required. 
llvm-svn: 75025
 2009-07-08 19:03:57 +00:00
Nick Lewycky
d46a7b2d22 Remove the vicmp and vfcmp instructions. Because we never had a release with 
these instructions, no autoupgrade or backwards compatibility support is
provided.

llvm-svn: 74991
 2009-07-08 03:04:38 +00:00
Owen Anderson
7a1f69e433 Push LLVMContext through GlobalVariables and IRBuilder. 
llvm-svn: 74985
 2009-07-08 01:26:06 +00:00
Owen Anderson
9647245825 Re-LLVMContext-ize DebugInfo, now with less breakage. 
llvm-svn: 74920
 2009-07-07 17:12:53 +00:00
Dan Gohman
dd7f97c496 Change all SCEV* to SCEV *. 
llvm-svn: 74918
 2009-07-07 17:06:11 +00:00
Owen Anderson
cbed5c5f4b Revert part of r74873 that broke Clang's debug info generation. 
llvm-svn: 74910
 2009-07-07 16:31:25 +00:00
Owen Anderson
121f736d9c "LLVMContext* " --> "LLVMContext *" 
llvm-svn: 74878
 2009-07-06 23:00:19 +00:00
Owen Anderson
5f268720e9 Finish LLVMContext-ing lib/Analysis. This required pushing LLVMContext's through the ValueTracking API. 
llvm-svn: 74873
 2009-07-06 22:37:39 +00:00
Owen Anderson
ad3229d281 Thread LLVMContext through the constant folding APIs, which touches a lot of files. 
llvm-svn: 74844
 2009-07-06 18:42:36 +00:00
Nick Lewycky
d9573d899d When comparing constants, consider a less wide constant to be "less complex" 
than a wider one, before trying to compare their contents which will crash
if their sizes are different.

llvm-svn: 74792
 2009-07-04 17:24:52 +00:00
Andreas Bolka
195aca7d25 Minor improvement to the LDA debug output. 
llvm-svn: 74754
 2009-07-03 01:42:52 +00:00
Devang Patel
5f93a737f6 Simplify debug info intrisinc lowering. 
llvm-svn: 74733
 2009-07-02 22:43:26 +00:00
Devang Patel
5a12c3ba50 Fix typo. 
Thanks Duncan!

llvm-svn: 74706
 2009-07-02 17:17:03 +00:00
Chris Lattner
54c0359890 do not try to analyze bitcasts from i64 to <2 x i32> in ComputedMaskedBits. While 
we could do this, doing so requires adjusting the demanded mask and the code isn't 
doing that yet.  This fixes PR4495

llvm-svn: 74699
 2009-07-02 16:04:08 +00:00
Devang Patel
8726708137 Add debug info utility routines. 
llvm-svn: 74680
 2009-07-02 01:15:24 +00:00
Devang Patel
0349a19e60 Keep DIDescriptor methods together. 
No functionality change.

llvm-svn: 74652
 2009-07-01 22:10:23 +00:00
Andreas Bolka
3ba7d77eff Use AA to check objects before LDA. 
llvm-svn: 74647
 2009-07-01 21:45:23 +00:00
Chris Lattner
4bdaace06e improve the APIs for creating struct and function types with no arguments/elements 
to not have to create a temporary vector (in the API at least).  Patch by Jay Foad!

llvm-svn: 74584
 2009-07-01 04:13:31 +00:00
Dan Gohman
b3c5210779 Minor code cleanups. 
llvm-svn: 74551
 2009-06-30 20:13:32 +00:00
Owen Anderson
4b4ba9f06c Fix the build on Cygwin. Patch by Aaron Gray. 
llvm-svn: 74510
 2009-06-30 05:33:46 +00:00
Andreas Bolka
71ef361d1d Array accesses are independent if the underlying arrays differ. 
llvm-svn: 74499
 2009-06-30 02:12:10 +00:00
Dan Gohman
cb466d07fb Minor formatting, whitespace, and 80-column fixes. 
llvm-svn: 74492
 2009-06-30 01:25:30 +00:00
Dan Gohman
ab49c8abe9 Use getSCEV instead of getUnknown to create a SCEV for a 
Constant. This lets ConstantInts be handled as SCEVConstant instead
of SCEVUnknown, as getUnknown no longer has special-case code for
ConstantInt and friends. This usually doesn't affect the final
output, since the constants end up getting folded later, but it
does make intermediate expressions more obvious in many cases.

llvm-svn: 74459
 2009-06-29 21:31:18 +00:00
Dan Gohman
d496b35af0 Don't cache PHI exit values from exhaustive evaluations, because 
an individual exhaustive evaluation reflects only the exit value
implied by an individual exit, which may differ from the actual
exit value of the loop if there are other exits. This fixes PR4477.

llvm-svn: 74447
 2009-06-29 20:34:13 +00:00
Andreas Bolka
e9be816964 Relax LDA memory instruction checks. 
llvm-svn: 74439
 2009-06-29 18:51:11 +00:00
Torok Edwin
9c5c74d4ca Call doInitialization(), releaseMemory(), and doFinalization() for on-the-fly passes as well. 
Also don't call finalizers for LoopPass if initialization was not called.
Add a unittest that tests that these methods are called, in the proper
order, and the correct number of times.

llvm-svn: 74438
 2009-06-29 18:49:09 +00:00
Dan Gohman
011d5bd123 Simplify this code, and avoid using APInt(). This fixes 
(otherwise harmless) uninitialized value warnings that
Duncan found with gcc-4.4.

llvm-svn: 74437
 2009-06-29 18:25:52 +00:00
Andreas Bolka
3fd2d1c6a5 Missed one. 
llvm-svn: 74416
 2009-06-29 00:53:49 +00:00
Andreas Bolka
32493b35ba Fix case in LDA util function names. 
llvm-svn: 74415
 2009-06-29 00:50:26 +00:00
Andreas Bolka
bed5622fb7 Print pairwise dependence results, add testcases. 
llvm-svn: 74402
 2009-06-28 00:35:22 +00:00
Andreas Bolka
1bb3ea724e Minimal LDA interface, maximally conservative tester. 
llvm-svn: 74401
 2009-06-28 00:21:21 +00:00
Andreas Bolka
f31c966606 LDA analysis output scaffolding. 
llvm-svn: 74400
 2009-06-28 00:16:08 +00:00
Dan Gohman
e25e17d91e Eliminate a layer of indirection in LoopInfo and MachineLoopInfo. 
llvm-svn: 74394
 2009-06-27 21:22:48 +00:00
Dan Gohman
592d4b6ee0 Convert ScalarEvolution to use BumpPtrAllocator and FoldingSet, instead 
of a team of individual allocations and a team of std::maps.

llvm-svn: 74393
 2009-06-27 21:21:31 +00:00
Dan Gohman
36f9ee7670 Change SCEVExpander to use an IRBuilder to emit instructions. 
llvm-svn: 74391
 2009-06-27 21:18:18 +00:00
Dan Gohman
4f74e815f1 Incorporate the insertion point into the key of SCEVExpander's CSE map. 
This helps it avoid reusing an instruction that doesn't dominate all
of the users, in cases where the original instruction was inserted
before all of the users were known.  This may result in redundant
expansions of sub-expressions that depend on loop-unpredictable values
in some cases, however this isn't very common, and it primarily impacts
IndVarSimplify, so GVN can be expected to clean these up.

This eliminates the need for IndVarSimplify's FixUsesBeforeDefs,
which fixes several bugs.

llvm-svn: 74352
 2009-06-26 22:53:46 +00:00
Dan Gohman
9e78d55440 Fix ScalarEvolution::getAddRecExpr's code which canonicalized the 
nesting order of nested AddRec expressions to skip the transformation
if it would introduce an AddRec with operands not loop-invariant
with respect to its loop.

llvm-svn: 74343
 2009-06-26 22:36:20 +00:00
Dan Gohman
e8b1947a18 Fix SCEVAddRecExpr::isLoopInvariant to test if all of its operands 
are loop invariant, not just the start operand.

llvm-svn: 74338
 2009-06-26 22:17:21 +00:00
Douglas Gregor
6d9b0e8c19 Fix linking of llvm-ld and lli with CMake, from Xerxes Rånby 
llvm-svn: 74285
 2009-06-26 15:37:00 +00:00
Devang Patel
84a8914a4a Remove debug info anchors - llvm.dbg.compile_units, llvm.dbg.subprograms 
and llvm.dbg.global_variables.

llvm-svn: 74251
 2009-06-26 01:49:18 +00:00
Owen Anderson
e52105541d Use a more correct atomic increment style. This isn't really necessary in 
this case, but it should help avoid issues in the future.

llvm-svn: 74178
 2009-06-25 16:32:45 +00:00
Owen Anderson
74964377a6 Make this thread-safe. 
llvm-svn: 74129
 2009-06-24 22:16:52 +00:00
Owen Anderson
68b4197830 Get rid of a static boolean. 
llvm-svn: 74125
 2009-06-24 22:08:59 +00:00
Andreas Bolka
141dde15bb Scaffolding for LDA pass. 
llvm-svn: 74120
 2009-06-24 21:29:13 +00:00
Owen Anderson
90f7655f57 Get rid of the global CFGOnly flag by threading a ShortNames parameters through the GraphViz rendering code. 
Update other uses in the codebase for this change.

llvm-svn: 74084
 2009-06-24 17:37:09 +00:00
Dan Gohman
34b8ca6976 Minor whitespace cleanups. 
llvm-svn: 74074
 2009-06-24 14:49:00 +00:00
Dan Gohman
b4e1f166e1 Simplify [su]max(MAX, n) to MAX. This comes up in loop tripcount 
computations in loops with multiple exits.

Adjust the testcase for PR4436 so that the relevant portion isn't
optimized away.

llvm-svn: 74073
 2009-06-24 14:46:22 +00:00
Dan Gohman
19c3326fc9 Delete some orphaned comments, fix some 80-column violations, 
and tidy up a few other formatting issues.

llvm-svn: 74060
 2009-06-24 04:48:43 +00:00
Dan Gohman
4f4bda36df Extend ScalarEvolution's multiple-exit support to compute exact 
trip counts in more cases.

Generalize ScalarEvolution's isLoopGuardedByCond code to recognize
And and Or conditions, splitting the code out into an
isNecessaryCond helper function so that it can evaluate Ands and Ors
recursively, and make SCEVExpander be much more aggressive about
hoisting instructions out of loops.

test/CodeGen/X86/pr3495.ll has an additional instruction now, but
it appears to be due to an arbitrary register allocation difference.

llvm-svn: 74048
 2009-06-24 01:18:18 +00:00