Anton Korobeynikov [Tue, 17 Jun 2008 17:38:31 +0000 (17:38 +0000)]
Unbreak non-PPC builds
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52419
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Anton Korobeynikov [Tue, 17 Jun 2008 17:30:05 +0000 (17:30 +0000)]
Provide generic hooks for icache invalidation. Add PPC implementation.
Patch by Gary Benson!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52418
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Chris Lattner [Tue, 17 Jun 2008 17:06:43 +0000 (17:06 +0000)]
revert recent patch which is causing widespread breakage.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52415
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Evan Cheng [Tue, 17 Jun 2008 16:49:02 +0000 (16:49 +0000)]
Don't forget to initialize SymbolSearchingDisabled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52414
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Duncan Sands [Tue, 17 Jun 2008 15:55:30 +0000 (15:55 +0000)]
Fix typo that changed the logic to something wrong.
Spotted by Nick Lewycky.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52411
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Duncan Sands [Tue, 17 Jun 2008 14:27:01 +0000 (14:27 +0000)]
Split type expansion into ExpandInteger and ExpandFloat
rather than bundling them together. Rename FloatToInt
to PromoteFloat (better, if not perfect). Reorganize
files by types rather than by operations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52408
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Matthijs Kooijman [Tue, 17 Jun 2008 13:54:33 +0000 (13:54 +0000)]
Forgot to commit the ValueTracking header file along with r52396.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52401
91177308-0d34-0410-b5e6-
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Matthijs Kooijman [Tue, 17 Jun 2008 12:20:24 +0000 (12:20 +0000)]
Learn IPConstProp to propagate arguments that are directly returned. Strictly
speaking these are not constant values. However, when a function always returns
one of its arguments, then from the point of view of each caller the return
value is constant (or at least a known value) and can be replaced.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52397
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Matthijs Kooijman [Tue, 17 Jun 2008 12:02:52 +0000 (12:02 +0000)]
Learn IPConstProp to look at individual return values and propagate them
individually.
Also learn IPConstProp how returning first class aggregates work, in addition
to old style multiple return instructions.
Modify the return-constants testscase to confirm this behaviour.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52396
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Matthijs Kooijman [Tue, 17 Jun 2008 08:26:32 +0000 (08:26 +0000)]
80 column fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52391
91177308-0d34-0410-b5e6-
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Matthijs Kooijman [Tue, 17 Jun 2008 08:24:37 +0000 (08:24 +0000)]
Use a SmallVector instead of an array, since auto_ptr doesn't handle arrays
properly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52390
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Chris Lattner [Tue, 17 Jun 2008 06:09:18 +0000 (06:09 +0000)]
add a new -enable-value-prop flag for llcbeta, that enables propagation
of value info (sign/zero ext info) from one MBB to another. This doesn't
handle much right now because of two limitations:
1) only handles zext/sext, not random bit propagation (no assert exists
for this)
2) doesn't handle phis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52383
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Duncan Sands [Tue, 17 Jun 2008 03:24:13 +0000 (03:24 +0000)]
Fix spelling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52381
91177308-0d34-0410-b5e6-
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Evan Cheng [Tue, 17 Jun 2008 02:01:22 +0000 (02:01 +0000)]
Rather than avoiding to wrap ISD::DECLARE GV operand in X86ISD::Wrapper, simply handle it at dagisel time with x86 specific isel code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52377
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Chris Lattner [Mon, 16 Jun 2008 23:06:51 +0000 (23:06 +0000)]
Add a missing ~ (dtor became ctor) which caused crashes on a bunch of stuff.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52374
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Evan Cheng [Mon, 16 Jun 2008 22:52:53 +0000 (22:52 +0000)]
Do not issue identity copies.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52373
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Dan Gohman [Mon, 16 Jun 2008 22:34:15 +0000 (22:34 +0000)]
Refine the change in r52258 for avoiding use-before-def conditions
when changing the stride of a comparison so that it's slightly
more precise, by having it scan the instruction list to determine
if there is a use of the condition after the point where the
condition will be inserted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52371
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Chris Lattner [Mon, 16 Jun 2008 21:20:58 +0000 (21:20 +0000)]
switch TypeHasCycleThroughItself from using an std::set to using a SmallPtrSet,
this speeds up the linking testcase in PR1860 by 44% (.379 -> 0.263)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52365
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Chris Lattner [Mon, 16 Jun 2008 21:17:12 +0000 (21:17 +0000)]
stop making PATypeHolder's so crazily.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52364
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Evan Cheng [Mon, 16 Jun 2008 21:16:24 +0000 (21:16 +0000)]
Horizontal-add instructions are not commutative.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52363
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Evan Cheng [Mon, 16 Jun 2008 21:08:17 +0000 (21:08 +0000)]
Switch over to SetVector to ensure same order of iterations do not vary across runs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52361
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Gabor Greif [Mon, 16 Jun 2008 21:06:12 +0000 (21:06 +0000)]
Move some documentation from the header file into ProgrammersManual. About to improve.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52360
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Chris Lattner [Mon, 16 Jun 2008 21:00:18 +0000 (21:00 +0000)]
use a real associative container for type association instead of using
a vector with a linear search. This speeds up the linking testcase
in PR1860 from 0.965s to 0.385s on my system.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52357
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Evan Cheng [Mon, 16 Jun 2008 20:29:38 +0000 (20:29 +0000)]
- Add "Commutative" property to intrinsics. This allows tblgen to generate the commuted variants for dagisel matching code.
- Mark lots of X86 intrinsics as "Commutative" to allow load folding.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52353
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Evan Cheng [Mon, 16 Jun 2008 20:25:59 +0000 (20:25 +0000)]
mpsadbw is commutable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52352
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Chris Lattner [Mon, 16 Jun 2008 20:03:01 +0000 (20:03 +0000)]
bail out sooner if we have two concrete but different types.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52351
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Chris Lattner [Mon, 16 Jun 2008 19:55:40 +0000 (19:55 +0000)]
simplify some code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52350
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Chris Lattner [Mon, 16 Jun 2008 19:48:08 +0000 (19:48 +0000)]
Apply a patch from Nathan Keynes, which speeds up llvm-link on
the testcases in PR1860 from taking more than 1 hour (when I killed it)
to taking 1s.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52347
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Owen Anderson [Mon, 16 Jun 2008 19:32:40 +0000 (19:32 +0000)]
Remove special case handling of empty MBBs now that we assign indices to them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52345
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Chris Lattner [Mon, 16 Jun 2008 18:27:53 +0000 (18:27 +0000)]
handle vectors. Any integers that got here would necessarily be different already.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52341
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Chris Lattner [Mon, 16 Jun 2008 18:19:05 +0000 (18:19 +0000)]
Simplify ResolveTypes by pulling the null case out into the one
client that cares and simplifying its control flow.
Remove the DestST argument to ResolveTypes and RecursiveResolveTypes*
which are dead now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52340
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Evan Cheng [Mon, 16 Jun 2008 18:17:09 +0000 (18:17 +0000)]
Iterating over SmallPtrSet is not deterministic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52339
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Chris Lattner [Mon, 16 Jun 2008 18:11:40 +0000 (18:11 +0000)]
simplify RecursiveResolveTypes and ResolveTypes by pulling the naming out of
ResolveTypes into the one place that needs it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52338
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Chris Lattner [Mon, 16 Jun 2008 17:44:14 +0000 (17:44 +0000)]
Add a new flag that disables symbol lookup with dlsym when set. This allows
a JIT client to completely control symbol lookup with the LazyFunctionCreator
interface.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52335
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Chris Lattner [Mon, 16 Jun 2008 17:04:06 +0000 (17:04 +0000)]
Add support for icache invalidation on non-darwin ppc systems.
Patch by Gary Benson!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52332
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Owen Anderson [Mon, 16 Jun 2008 16:58:24 +0000 (16:58 +0000)]
Re-enable empty block indexing by default, since it doesn't seem to have any
impact on code quality or compile time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52329
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Matthijs Kooijman [Mon, 16 Jun 2008 14:13:46 +0000 (14:13 +0000)]
Make BuildSubAggregate use FindInsertedElement again to prevent it from
inserting extractvalues. In particular, this prevents the insertion of
extractvalues that can't be folded away later. Also add an example of when this
stuff is needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52328
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Matthijs Kooijman [Mon, 16 Jun 2008 13:28:31 +0000 (13:28 +0000)]
Make the InsertBefore argument to FindInsertedValue optional, so you can find an inserted value without modifying the code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52319
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Matthijs Kooijman [Mon, 16 Jun 2008 13:13:08 +0000 (13:13 +0000)]
Pass around Instruction* instead of Instruction& in FindInsertedValue and friends.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52318
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Matthijs Kooijman [Mon, 16 Jun 2008 13:03:44 +0000 (13:03 +0000)]
Make testcase check for extractvalue instead of extractelement.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52317
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Matthijs Kooijman [Mon, 16 Jun 2008 12:57:37 +0000 (12:57 +0000)]
80 column fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52316
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Matthijs Kooijman [Mon, 16 Jun 2008 12:48:21 +0000 (12:48 +0000)]
Move FindScalarValue from InstructionCombining.cpp to ValueTracking.cpp. While
I'm at it, rename it to FindInsertedValue.
The only functional change is that newly created instructions are no longer
added to instcombine's worklist, but that is not really necessary anyway (and
I'll commit some improvements next that will completely remove the need).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52315
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Matthijs Kooijman [Mon, 16 Jun 2008 12:21:25 +0000 (12:21 +0000)]
Store the result of multiple identical run lines in a temporary file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52314
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Matthijs Kooijman [Mon, 16 Jun 2008 12:20:05 +0000 (12:20 +0000)]
Add comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52313
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Argyrios Kyrtzidis [Mon, 16 Jun 2008 10:14:09 +0000 (10:14 +0000)]
Minor comment fix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52312
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Matthijs Kooijman [Mon, 16 Jun 2008 09:38:23 +0000 (09:38 +0000)]
Fix PR numbers, I accidentally switched two digits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52311
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Duncan Sands [Mon, 16 Jun 2008 08:14:38 +0000 (08:14 +0000)]
Allow these transforms for types like i256 while
still excluding types like i1 (not byte sized)
and i120 (loading an i120 requires loading an i64,
an i32, an i16 and an i8, which is expensive).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52310
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Evan Cheng [Mon, 16 Jun 2008 07:34:17 +0000 (07:34 +0000)]
Fix read after free found by valgrind.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52309
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Evan Cheng [Mon, 16 Jun 2008 07:33:11 +0000 (07:33 +0000)]
Add option to commuteInstruction() which forces it to create a new (commuted) instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52308
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Owen Anderson [Mon, 16 Jun 2008 07:10:49 +0000 (07:10 +0000)]
Make indexing empty basic blocks an option for the moment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52306
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Chris Lattner [Mon, 16 Jun 2008 06:43:06 +0000 (06:43 +0000)]
add a const version of stripPointerCasts
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52305
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Chris Lattner [Mon, 16 Jun 2008 06:38:26 +0000 (06:38 +0000)]
simplify some code by using a helper function. This really really
wants a 'nocapture' predicate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52304
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Chris Lattner [Mon, 16 Jun 2008 06:30:22 +0000 (06:30 +0000)]
move a bunch of predicates up into their own section
in this file, no other changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52303
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Chris Lattner [Mon, 16 Jun 2008 06:28:01 +0000 (06:28 +0000)]
Other parts of this code treat noalias arguments as objects for
the purposes of escape analysis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52302
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Chris Lattner [Mon, 16 Jun 2008 06:19:11 +0000 (06:19 +0000)]
If we are checking to see if the result of a call aliases a
pointer derived from a local allocation, if the local allocation
never escapes, the pointers can't alias. This implements PR2436
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52301
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Owen Anderson [Mon, 16 Jun 2008 06:18:41 +0000 (06:18 +0000)]
Assign indices to empty basic blocks. This will be necessary for StrongPHIElimination in the near future.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52300
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Chris Lattner [Mon, 16 Jun 2008 06:10:11 +0000 (06:10 +0000)]
Refactor basicaa's main alias function somethin' fierce.
This fixes several minor bugs (such as returning noalias
for comparisons between external weak functions an null) but
is mostly a cleanup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52299
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Chris Lattner [Mon, 16 Jun 2008 04:25:39 +0000 (04:25 +0000)]
this is unneeded now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52298
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Chris Lattner [Mon, 16 Jun 2008 04:25:29 +0000 (04:25 +0000)]
Switch from generating the int128 typedefs based on targetdata to generating
them based on the end-compiler's capabilities. This fixes PR2453
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52297
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Chris Lattner [Mon, 16 Jun 2008 04:22:39 +0000 (04:22 +0000)]
resolve PR2453 by adding a run line.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52296
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Chris Lattner [Mon, 16 Jun 2008 04:10:21 +0000 (04:10 +0000)]
Fix the crash on SimplifyLibCalls/2005-05-20-sprintf-crash.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52295
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Chris Lattner [Mon, 16 Jun 2008 04:02:40 +0000 (04:02 +0000)]
fix pr2460
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52294
91177308-0d34-0410-b5e6-
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Duncan Sands [Sun, 15 Jun 2008 20:12:31 +0000 (20:12 +0000)]
The transforms in visitEXTRACT_VECTOR_ELT are
not valid if the load is volatile. Hopefully
all wrong DAG combiner transforms of volatile
loads and stores have now been caught.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52293
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Duncan Sands [Sun, 15 Jun 2008 20:00:14 +0000 (20:00 +0000)]
LegalizeTypes support for INSERT_VECTOR_ELT with
a non-constant index.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52292
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Wojciech Matyjewicz [Sun, 15 Jun 2008 19:07:39 +0000 (19:07 +0000)]
Fix PR2434. When scanning for exising binary operator to reuse don't
take into account the instrucion pointed by InsertPt. Thanks to it,
returning the new value of InsertPt to the InsertBinop() caller can be
avoided. The bug was, actually, in visitAddRecExpr() method which wasn't
correctly handling changes of InsertPt. There shouldn't be any
performance regression, as -gvn pass (run after -indvars) removes any
redundant binops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52291
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Wojciech Matyjewicz [Sun, 15 Jun 2008 18:02:47 +0000 (18:02 +0000)]
Add a missing semicolon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52290
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Argyrios Kyrtzidis [Sun, 15 Jun 2008 15:20:16 +0000 (15:20 +0000)]
Add an "exe" suffix only if the output file has no suffix at all.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52289
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Argyrios Kyrtzidis [Sun, 15 Jun 2008 15:15:19 +0000 (15:15 +0000)]
Fix the sys::Path::getSuffix() implementation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52288
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Argyrios Kyrtzidis [Sun, 15 Jun 2008 13:48:12 +0000 (13:48 +0000)]
Make sure all produced executable files have "exe" suffix on Windows.
With this more general way, -native and -native-cbe options are handled too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52287
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Argyrios Kyrtzidis [Sun, 15 Jun 2008 12:07:01 +0000 (12:07 +0000)]
Make sure that the current executable filename has "exe" suffix on Windows.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52286
91177308-0d34-0410-b5e6-
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Argyrios Kyrtzidis [Sun, 15 Jun 2008 12:01:16 +0000 (12:01 +0000)]
Append "exe" suffix to executable files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52285
91177308-0d34-0410-b5e6-
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Argyrios Kyrtzidis [Sun, 15 Jun 2008 03:54:39 +0000 (03:54 +0000)]
Fix the environment block that is passed to the CreateProcess function.
This bug made llvm-ld unable to function with "-native" option, since the process that was used to call 'gcc' was crashing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52284
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Duncan Sands [Sat, 14 Jun 2008 17:48:34 +0000 (17:48 +0000)]
Remove a redundant AfterLegalize check. Turn
on some code when !AfterLegalize - but since
this whole code section is turned off by an
"if (0)" it's not really turning anything on.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52276
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Wojciech Matyjewicz [Sat, 14 Jun 2008 16:48:22 +0000 (16:48 +0000)]
Change 'while' loop to 'do' loop.
Add a safety measure. It isn't safe to assume in ScalarEvolutionExpander that
all loops are in canonical form (but it should be safe for loops that have
AddRecs).
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52275
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Andrew Lenharth [Sat, 14 Jun 2008 05:48:15 +0000 (05:48 +0000)]
add missing atomic intrinsic from gcc
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52270
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Chris Lattner [Sat, 14 Jun 2008 00:49:48 +0000 (00:49 +0000)]
Fix a case where tailcallelim wouldn't set the changed bit when it made a change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52267
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Evan Cheng [Fri, 13 Jun 2008 23:58:02 +0000 (23:58 +0000)]
Teach the spiller to commute instructions in order to fold a reload. This hits 410 times on 444.namd and 122 times on 252.eon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52266
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Eli Friedman [Fri, 13 Jun 2008 22:12:16 +0000 (22:12 +0000)]
Remove unnecessary target lines.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52261
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Eli Friedman [Fri, 13 Jun 2008 22:10:32 +0000 (22:10 +0000)]
Remove unnecessary target lines.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52260
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Eli Friedman [Fri, 13 Jun 2008 22:02:12 +0000 (22:02 +0000)]
Don't skip over instructions other than loads that might read memory
when trying to sink stores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52259
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Dan Gohman [Fri, 13 Jun 2008 21:43:41 +0000 (21:43 +0000)]
Protect ChangeCompareStride from situations in which it is possible
for it to generate use-before-def IR, such as in this testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52258
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Eli Friedman [Fri, 13 Jun 2008 21:17:49 +0000 (21:17 +0000)]
Make sure SimplifyStoreAtEndOfBlock doesn't mess with loops; the
structure checks are incorrect if the blocks aren't distinct.
Fixes PR2435.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52257
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Duncan Sands [Fri, 13 Jun 2008 19:07:40 +0000 (19:07 +0000)]
Disable some DAG combiner optimizations that may be
wrong for volatile loads and stores. In fact this
is almost all of them! There are three types of
problems: (1) it is wrong to change the width of
a volatile memory access. These may be used to
do memory mapped i/o, in which case a load can have
an effect even if the result is not used. Consider
loading an i32 but only using the lower 8 bits. It
is wrong to change this into a load of an i8, because
you are no longer tickling the other three bytes. It
is also unwise to make a load/store wider. For
example, changing an i16 load into an i32 load is
wrong no matter how aligned things are, since the
fact of loading an additional 2 bytes can have
i/o side-effects. (2) it is wrong to change the
number of volatile load/stores: they may be counted
by the hardware. (3) it is wrong to change a volatile
load/store that requires one memory access into one
that requires several. For example on x86-32, you
can store a double in one processor operation, but to
store an i64 requires two (two i32 stores). In a
multi-threaded program you may want to bitcast an i64
to a double and store as a double because that will
occur atomically, and be indivisible to other threads.
So it would be wrong to convert the store-of-double
into a store of an i64, because this will become two
i32 stores - no longer atomic. My policy here is
to say that the number of processor operations for
an illegal operation is undefined. So it is alright
to change a store of an i64 (requires at least two
stores; but could be validly lowered to memcpy for
example) into a store of double (one processor op).
In short, if the new store is legal and has the same
size then I say that the transform is ok. It would
also be possible to say that transforms are always
ok if before they were illegal, whether after they
are illegal or not, but that's more awkward to do
and I doubt it buys us anything much.
However this exposed an interesting thing - on x86-32
a store of i64 is considered legal! That is because
operations are marked legal by default, regardless of
whether the type is legal or not. In some ways this
is clever: before type legalization this means that
operations on illegal types are considered legal;
after type legalization there are no illegal types
so now operations are only legal if they really are.
But I consider this to be too cunning for mere mortals.
Better to do things explicitly by testing AfterLegalize.
So I have changed things so that operations with illegal
types are considered illegal - indeed they can never
map to a machine operation. However this means that
the DAG combiner is more conservative because before
it was "accidentally" performing transforms where the
type was illegal because the operation was nonetheless
marked legal. So in a few such places I added a check
on AfterLegalize, which I suppose was actually just
forgotten before. This causes the DAG combiner to do
slightly more than it used to, which resulted in the X86
backend blowing up because it got a slightly surprising
node it wasn't expecting, so I tweaked it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52254
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Dan Gohman [Fri, 13 Jun 2008 17:55:57 +0000 (17:55 +0000)]
Fix an error in the two-address example.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52253
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Wojciech Matyjewicz [Fri, 13 Jun 2008 17:02:03 +0000 (17:02 +0000)]
Use recently added getTruncateOrZeroExtend method to make the code shorter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52251
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Matthijs Kooijman [Fri, 13 Jun 2008 16:52:35 +0000 (16:52 +0000)]
XFAIL some tests that became failing due to the extra error reporting recently. PR's are created for these.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52250
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Nick Lewycky [Fri, 13 Jun 2008 04:38:55 +0000 (04:38 +0000)]
Crash less. The i64 restriction in BinomialCoefficient caused some problems
with code that was expecting different bit widths for different values.
Make getTruncateOrZeroExtend a method on ScalarEvolution, and use it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52248
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Gabor Greif [Thu, 12 Jun 2008 21:51:29 +0000 (21:51 +0000)]
fix a minor deviation from the original in my previous commit
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52247
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Gabor Greif [Thu, 12 Jun 2008 21:37:33 +0000 (21:37 +0000)]
op_iterator-ify some loops, low hanging fruit only, there is more
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52246
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Evan Cheng [Thu, 12 Jun 2008 21:23:38 +0000 (21:23 +0000)]
Fix some tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52245
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Evan Cheng [Thu, 12 Jun 2008 21:15:59 +0000 (21:15 +0000)]
Do not speculatively execute an instruction by hoisting it to its predecessor BB if any of its operands are defined but not used in BB. The transformation will prevent the operand from being sunk into the use block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52244
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Evan Cheng [Thu, 12 Jun 2008 20:55:39 +0000 (20:55 +0000)]
Revert 52223.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52243
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Owen Anderson [Thu, 12 Jun 2008 19:25:32 +0000 (19:25 +0000)]
Switch GVN to use ScopedHashTable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52242
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Dale Johannesen [Thu, 12 Jun 2008 17:04:09 +0000 (17:04 +0000)]
Improve description of -emit-llvm.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52238
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Matthijs Kooijman [Thu, 12 Jun 2008 13:44:26 +0000 (13:44 +0000)]
Don't try to compile tests for the ev56 alpha subtarget, which hasn't been
supported since r33492.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52237
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Matthijs Kooijman [Thu, 12 Jun 2008 13:12:11 +0000 (13:12 +0000)]
Pass -silence-passes to bugpoint in testcases, this makes two out of three bugpoint testcases work again.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52236
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Matthijs Kooijman [Thu, 12 Jun 2008 13:09:43 +0000 (13:09 +0000)]
Let bugpoint display generated messages on stderr only if no interpreter was
found, this ensures that messages like "Found gcc" end up on stdout where they
belong.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52235
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Matthijs Kooijman [Thu, 12 Jun 2008 13:02:26 +0000 (13:02 +0000)]
Add -silence-passes option to bugpoint. This option suppresses output generated
when bugpoint is running passes in a child process.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52234
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Matthijs Kooijman [Thu, 12 Jun 2008 12:53:35 +0000 (12:53 +0000)]
Fix redirection of stderr in sys::Program::ExecuteAndWait. There was logic
error that caused it to redirect stderr to stdout too often.
This fix is applied identically to the win32 code as well, but that is
untested.
--Thi line, and those below, will be ignored--
M System/Unix/Program.inc
M System/Win32/Program.inc
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52233
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Matthijs Kooijman [Thu, 12 Jun 2008 10:47:18 +0000 (10:47 +0000)]
Make I/O redirection handling in sys::Program a bit more consistent. No
functional changes. Win32 code is untested, but should work fine.
In the unix variant, rename RedirectFD to RedirectIO and let that function
handle empty and null paths instead of doing that in the caller 3 times. This
is the same as win32 already does it.
In the win32 variant, use Path::isEmpty() instead of checking the resulting
c_str() manually. This is the same as unix already does it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52230
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