Anton Korobeynikov [Wed, 20 Feb 2008 11:24:05 +0000 (11:24 +0000)]
Fix code style
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47370
91177308-0d34-0410-b5e6-
96231b3b80d8
Anton Korobeynikov [Wed, 20 Feb 2008 11:22:39 +0000 (11:22 +0000)]
Remove bunch of gcc 4.3-related warnings from Target
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47369
91177308-0d34-0410-b5e6-
96231b3b80d8
Anton Korobeynikov [Wed, 20 Feb 2008 11:10:28 +0000 (11:10 +0000)]
Update gcc 4.3 warnings fix patch with recent head changes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47368
91177308-0d34-0410-b5e6-
96231b3b80d8
Anton Korobeynikov [Wed, 20 Feb 2008 11:08:44 +0000 (11:08 +0000)]
Unbreak build with gcc 4.3: provide missed includes and silence most annoying warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47367
91177308-0d34-0410-b5e6-
96231b3b80d8
Bill Wendling [Wed, 20 Feb 2008 09:15:16 +0000 (09:15 +0000)]
Added some comments and reformatted others. No functionality change.
Added two "FIXMEs" for code that looks dubious to me (but I could be
wrong).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47366
91177308-0d34-0410-b5e6-
96231b3b80d8
Bill Wendling [Wed, 20 Feb 2008 09:14:09 +0000 (09:14 +0000)]
Fixed typo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47365
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Wed, 20 Feb 2008 08:23:02 +0000 (08:23 +0000)]
When performing return slot optimization, remember to inform memdep when we're removing the memcpy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47364
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Wed, 20 Feb 2008 07:55:26 +0000 (07:55 +0000)]
Added memmove to interpreter external functions list. Patch by Daniel Dunbar.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47363
91177308-0d34-0410-b5e6-
96231b3b80d8
Bill Wendling [Wed, 20 Feb 2008 07:36:31 +0000 (07:36 +0000)]
More constification of things. More comments added. No functionality
changes. (Sorry for any formatting changes that creeped in.)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47362
91177308-0d34-0410-b5e6-
96231b3b80d8
Nick Lewycky [Wed, 20 Feb 2008 06:58:55 +0000 (06:58 +0000)]
Use getConstant for ConstantInts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47361
91177308-0d34-0410-b5e6-
96231b3b80d8
Nick Lewycky [Wed, 20 Feb 2008 06:48:22 +0000 (06:48 +0000)]
Add 'umax' similar to 'smax' SCEV. Closes PR2003.
Parse reversed smax and umax as smin and umin and express them with negative
or binary-not SCEVs (which are really just subtract under the hood).
Parse 'xor %x, -1' as (-1 - %x).
Remove dead code (ConstantInt::get always returns a ConstantInt).
Don't use getIntegerSCEV(-1, Ty). The first value is an int, then it gets
passed into a uint64_t. Instead, create the -1 directly from
ConstantInt::getAllOnesValue().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47360
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Wed, 20 Feb 2008 06:28:01 +0000 (06:28 +0000)]
Fix an incredibly subtle bug exposed by Ted's change to APInt profiling.
AddNodeIDNode does profiling for a ConstantSDNode, but so does
SelectionDAG::getConstant. This profiling should be moved to a common
static function in ConstantSDNode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47359
91177308-0d34-0410-b5e6-
96231b3b80d8
Bill Wendling [Wed, 20 Feb 2008 06:10:21 +0000 (06:10 +0000)]
No functionality change:
- Constified some MachineOperand values.
- Added/Modified some comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47358
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Wed, 20 Feb 2008 02:38:58 +0000 (02:38 +0000)]
XFAIL this for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47355
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Wed, 20 Feb 2008 02:29:17 +0000 (02:29 +0000)]
Disable for now. This is pessimizing code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47354
91177308-0d34-0410-b5e6-
96231b3b80d8
Dan Gohman [Wed, 20 Feb 2008 01:07:51 +0000 (01:07 +0000)]
Add some comments to Intrinsic::getDeclaration to clarify how to
get declarations for overloaded intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47353
91177308-0d34-0410-b5e6-
96231b3b80d8
Dale Johannesen [Tue, 19 Feb 2008 23:51:49 +0000 (23:51 +0000)]
Add Alignment field to ParameterAttributes and
treat more or less rationally in interface
functions, subject to change. No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47352
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Tue, 19 Feb 2008 23:36:51 +0000 (23:36 +0000)]
Add hidden option -x86-fold-and-in-test to test the effect the test / and folding change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47351
91177308-0d34-0410-b5e6-
96231b3b80d8
Devang Patel [Tue, 19 Feb 2008 22:27:01 +0000 (22:27 +0000)]
regenerate
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47350
91177308-0d34-0410-b5e6-
96231b3b80d8
Devang Patel [Tue, 19 Feb 2008 22:26:37 +0000 (22:26 +0000)]
Parse
%b = getresult {i32, i32} %a, i32 1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47349
91177308-0d34-0410-b5e6-
96231b3b80d8
Devang Patel [Tue, 19 Feb 2008 22:15:16 +0000 (22:15 +0000)]
Add GetResultInst. First step for multiple return value support.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47348
91177308-0d34-0410-b5e6-
96231b3b80d8
Dale Johannesen [Tue, 19 Feb 2008 21:40:51 +0000 (21:40 +0000)]
Generated files for checkin 47342.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47344
91177308-0d34-0410-b5e6-
96231b3b80d8
Dale Johannesen [Tue, 19 Feb 2008 21:40:10 +0000 (21:40 +0000)]
Forgot a file, goes with 47342.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47343
91177308-0d34-0410-b5e6-
96231b3b80d8
Dale Johannesen [Tue, 19 Feb 2008 21:38:47 +0000 (21:38 +0000)]
Expand ParameterAttributes to 32 bits (in preparation
for adding alignment info, not there yet). Clean up
interfaces to reference ParameterAttributes consistently.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47342
91177308-0d34-0410-b5e6-
96231b3b80d8
Ted Kremenek [Tue, 19 Feb 2008 20:50:41 +0000 (20:50 +0000)]
Fixed bug in APInt::Profile() where the BitWidth field was not included in the
profile of the APSInt object. This caused unexpected Profile collisions where
none should have occurred.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47338
91177308-0d34-0410-b5e6-
96231b3b80d8
Andrew Lenharth [Tue, 19 Feb 2008 19:47:54 +0000 (19:47 +0000)]
fix some byval problems in the cbe. Closes PR2065
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47337
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Tue, 19 Feb 2008 18:49:08 +0000 (18:49 +0000)]
random cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47334
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Tue, 19 Feb 2008 18:07:46 +0000 (18:07 +0000)]
this test requires sse2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47331
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Tue, 19 Feb 2008 17:37:35 +0000 (17:37 +0000)]
Don't fold and's into test instructions if they have multiple uses.
This compiles test-nofold.ll into:
_test:
movl $15, %ecx
andl 4(%esp), %ecx
testl %ecx, %ecx
movl $42, %eax
cmove %ecx, %eax
ret
instead of:
_test:
movl 4(%esp), %eax
movl %eax, %ecx
andl $15, %ecx
testl $15, %eax
movl $42, %eax
cmove %ecx, %eax
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47330
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Tue, 19 Feb 2008 17:33:52 +0000 (17:33 +0000)]
rename tests to avoid a test- prefix when they aren't related to the test instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47329
91177308-0d34-0410-b5e6-
96231b3b80d8
Duncan Sands [Tue, 19 Feb 2008 09:28:48 +0000 (09:28 +0000)]
Fix a compiler warning.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47328
91177308-0d34-0410-b5e6-
96231b3b80d8
Tanya Lattner [Tue, 19 Feb 2008 08:07:33 +0000 (08:07 +0000)]
Remove llvm-upgrade and update tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47325
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Tue, 19 Feb 2008 07:58:11 +0000 (07:58 +0000)]
dead pass
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47324
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Tue, 19 Feb 2008 07:49:17 +0000 (07:49 +0000)]
remove the LowerSelect pass. The last client was the old Sparc backend, which is long dead by now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47323
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Tue, 19 Feb 2008 07:39:17 +0000 (07:39 +0000)]
remove the lower packed pass. It can never work and even the parts that
could work don't work fully. This fixes PR1705. Oh yeah, we don't have
packed types anymore either ;-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47322
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Tue, 19 Feb 2008 07:07:51 +0000 (07:07 +0000)]
Refactor this method a bit, and correct a test that was completely wrong but happened to work out anyways. :-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47321
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Tue, 19 Feb 2008 06:53:20 +0000 (06:53 +0000)]
isa+cast -> dyncast.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47320
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Tue, 19 Feb 2008 06:52:38 +0000 (06:52 +0000)]
simplify this code again, try 2 :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47319
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Tue, 19 Feb 2008 06:51:23 +0000 (06:51 +0000)]
Fix a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47318
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Tue, 19 Feb 2008 06:47:18 +0000 (06:47 +0000)]
In addition to arguments passed to it, memcpy (and all other calls) can ModRef pointers that alias their arguments as well. This fixes PR2057.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47317
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Tue, 19 Feb 2008 06:35:43 +0000 (06:35 +0000)]
Major improvements to yesterday's return slot optimization. Remove some unneccessary constraints,
and add some others that should have been in from the first place. Document the whole thing better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47315
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Tue, 19 Feb 2008 06:22:12 +0000 (06:22 +0000)]
Fix some minor issues folding undef, PR2052
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47314
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Tue, 19 Feb 2008 06:12:18 +0000 (06:12 +0000)]
fdiv/frem of undef can produce undef, because the undef operand
can be a SNaN. We could be more aggressive and turn this into
unreachable, but that is less nice, and not really worth it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47313
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Tue, 19 Feb 2008 04:36:25 +0000 (04:36 +0000)]
regenerate
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47312
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Tue, 19 Feb 2008 04:36:07 +0000 (04:36 +0000)]
Fix PR2060 by rejecting invalid types for integer constants.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47311
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Tue, 19 Feb 2008 03:27:34 +0000 (03:27 +0000)]
Factor the profitability check for return slot optimization out into a static function.
At some point in the future, this check will become smarter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47310
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Tue, 19 Feb 2008 03:15:29 +0000 (03:15 +0000)]
An sret parameter is required to be the first parameter, so there's no need to loop
over all the parameters of the callee looking for it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47309
91177308-0d34-0410-b5e6-
96231b3b80d8
Nick Lewycky [Tue, 19 Feb 2008 03:11:47 +0000 (03:11 +0000)]
Don't spew stats to stderr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47308
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Tue, 19 Feb 2008 03:09:45 +0000 (03:09 +0000)]
Cleanup some of my patches from yesterday. Refactor the check for which xform
to apply to a memcpy into processInstruction. Also, fix a bug in the check due to
missing braces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47307
91177308-0d34-0410-b5e6-
96231b3b80d8
Nick Lewycky [Tue, 19 Feb 2008 02:58:36 +0000 (02:58 +0000)]
Fix up the run line for this new test.
llc: for the -info-output-file option: requires a value!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47306
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Tue, 19 Feb 2008 02:53:23 +0000 (02:53 +0000)]
Fix Transforms/GVN/memcpy.ll, which Chris broke in r47275 by reordering the branches. memcpy's are a kind of CallInst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47305
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Tue, 19 Feb 2008 02:09:58 +0000 (02:09 +0000)]
New test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47302
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Tue, 19 Feb 2008 02:09:37 +0000 (02:09 +0000)]
PR1909: Tail merging pass ran wild. It makes no sense to merge blocks in order to save a single instruction since a branch will be inserted for each BB.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47301
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Tue, 19 Feb 2008 02:05:16 +0000 (02:05 +0000)]
Me not like duplicated comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47300
91177308-0d34-0410-b5e6-
96231b3b80d8
Tanya Lattner [Tue, 19 Feb 2008 01:44:26 +0000 (01:44 +0000)]
Remove llvm-upgrade and update tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47297
91177308-0d34-0410-b5e6-
96231b3b80d8
Tanya Lattner [Tue, 19 Feb 2008 01:41:04 +0000 (01:41 +0000)]
Remove llvm-upgrade and update tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47296
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Mon, 18 Feb 2008 23:04:32 +0000 (23:04 +0000)]
- When DAG combiner is folding a bit convert into a BUILD_VECTOR, it should check if it's essentially a SCALAR_TO_VECTOR. Avoid turning (v8i16) <10, u, u, u> to <10, 0, u, u, u, u, u, u>. Instead, simply convert it to a SCALAR_TO_VECTOR of the proper type.
- X86 now normalize SCALAR_TO_VECTOR to (BIT_CONVERT (v4i32 SCALAR_TO_VECTOR)). Get rid of X86ISD::S2VEC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47290
91177308-0d34-0410-b5e6-
96231b3b80d8
Nick Lewycky [Mon, 18 Feb 2008 22:48:05 +0000 (22:48 +0000)]
Correctly fold divide-by-constant, even when faced with overflow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47287
91177308-0d34-0410-b5e6-
96231b3b80d8
Dan Gohman [Mon, 18 Feb 2008 19:34:53 +0000 (19:34 +0000)]
Chris pointed out that it's not necessary to set i64 MUL to Expand
on x86-32 since i64 itself is not a Legal type. And, update some
comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47282
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Mon, 18 Feb 2008 18:56:31 +0000 (18:56 +0000)]
- Remove the previous check which broke coalescer-commute3.ll
- For now, conservatively ignore copy MI whose source is a physical register. Commuting its def MI can cause a physical register live interval to be live through a loop (since we know it's live coming into the def MI).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47281
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Mon, 18 Feb 2008 18:46:39 +0000 (18:46 +0000)]
upgrade some tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47280
91177308-0d34-0410-b5e6-
96231b3b80d8
Nate Begeman [Mon, 18 Feb 2008 18:39:23 +0000 (18:39 +0000)]
Add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47279
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Mon, 18 Feb 2008 18:30:13 +0000 (18:30 +0000)]
Add a note about sext from i1 plus flags use.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47278
91177308-0d34-0410-b5e6-
96231b3b80d8
Dan Gohman [Mon, 18 Feb 2008 17:55:26 +0000 (17:55 +0000)]
Don't mark scalar integer multiplication as Expand on x86, since x86
has plain one-result scalar integer multiplication instructions.
This avoids expanding such instructions into MUL_LOHI sequences that
must be special-cased at isel time, and avoids the problem with that
code that provented memory operands from being folded.
This fixes PR1874, addressesing the most common case. The uncommon
cases of optimizing multiply-high operations will require work
in DAGCombiner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47277
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Mon, 18 Feb 2008 17:50:16 +0000 (17:50 +0000)]
Transforming -A + -B --> -(A + B) isn't safe for FP, thanks
to Dale for noticing this!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47276
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Mon, 18 Feb 2008 17:47:29 +0000 (17:47 +0000)]
minor code simplification, no functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47275
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Mon, 18 Feb 2008 17:33:10 +0000 (17:33 +0000)]
make this just a bit more strict.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47274
91177308-0d34-0410-b5e6-
96231b3b80d8
Duncan Sands [Mon, 18 Feb 2008 17:32:13 +0000 (17:32 +0000)]
Simplify caller updating using a CallSite, as
requested by Chris. While there, do the same
for an existing function committed by someone
called "lattner" :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47273
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Mon, 18 Feb 2008 17:28:21 +0000 (17:28 +0000)]
don't bother calling getUnderlyingObject for non-pointers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47272
91177308-0d34-0410-b5e6-
96231b3b80d8
Dan Gohman [Mon, 18 Feb 2008 17:15:45 +0000 (17:15 +0000)]
Fix a missing space in the description of the find-bugs option.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47271
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Mon, 18 Feb 2008 10:11:00 +0000 (10:11 +0000)]
Since we're not checking for the more general AllocationInst first, we need to explicitly check
that Object is an Argument before casting it to one.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47268
91177308-0d34-0410-b5e6-
96231b3b80d8
Roman Levenstein [Mon, 18 Feb 2008 09:35:30 +0000 (09:35 +0000)]
New helper function getMBBFromIndex() that given an index in any instruction of an MBB returns a pointer the MBB. Reviewed by Evan.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47267
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Mon, 18 Feb 2008 09:24:53 +0000 (09:24 +0000)]
Add support to GVN for performing sret return slot optimization. This means that, if an sret function tail calls
another sret function, it should pass its own sret parameter to the tail callee, allowing it to fill in the correct
return value. llvm-gcc does not emit this by default. Instead, it allocates space in the caller for the sret of
the tail call and then uses memcpy to copy the result into the caller's sret parameter. This optimization detects
and optimizes that case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47265
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Mon, 18 Feb 2008 09:22:21 +0000 (09:22 +0000)]
I got the predicate backwards in my last patch. The comment is correct, the code was not.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47264
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Mon, 18 Feb 2008 09:11:02 +0000 (09:11 +0000)]
This check is not correct for mallocs, so exclude them earlier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47263
91177308-0d34-0410-b5e6-
96231b3b80d8
Evan Cheng [Mon, 18 Feb 2008 08:40:53 +0000 (08:40 +0000)]
For now, avoid commuting def MI for copy MI's whose source is not killed. That simply trade a live interval for another and because only the non-two-address operands can be folded into loads, may end up pessimising code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47262
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Mon, 18 Feb 2008 07:42:56 +0000 (07:42 +0000)]
switch simplifycfg from using vectors for most things to smallvectors,
this speeds it up 2.3% on eon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47261
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Mon, 18 Feb 2008 06:12:38 +0000 (06:12 +0000)]
optimize away stackrestore calls that have no intervening alloca or call.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47258
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Mon, 18 Feb 2008 06:11:00 +0000 (06:11 +0000)]
upgrade this test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47257
91177308-0d34-0410-b5e6-
96231b3b80d8
Duncan Sands [Mon, 18 Feb 2008 04:19:38 +0000 (04:19 +0000)]
Clarify that 'sret' only applies to pointers, and
only applies to the first parameter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47256
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Mon, 18 Feb 2008 04:09:01 +0000 (04:09 +0000)]
Make the definition of the noalias attribute clearer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47255
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Mon, 18 Feb 2008 04:06:26 +0000 (04:06 +0000)]
Duncan pointed out that we can fast fail here, because the sret parameter of
a function must be the first parameter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47254
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Mon, 18 Feb 2008 03:52:21 +0000 (03:52 +0000)]
Fix a comment, and a bug where we weren't applying the tail call logic in cases that failed the first test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47253
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Mon, 18 Feb 2008 02:31:23 +0000 (02:31 +0000)]
Fix bugs that Chris noticed in my last patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47252
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Mon, 18 Feb 2008 02:18:25 +0000 (02:18 +0000)]
simplify some code, BreakUpSubtract always returns nonnull now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47251
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Mon, 18 Feb 2008 02:11:28 +0000 (02:11 +0000)]
bitcasts of pointers are always pointers.
If we see a memcpy of a pointer, make sure to check later
uses of the pointer as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47250
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Mon, 18 Feb 2008 00:10:55 +0000 (00:10 +0000)]
Add support for setting parameters to CallSite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47249
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Sun, 17 Feb 2008 23:22:28 +0000 (23:22 +0000)]
Add a predicate to Argument to check for the StructRet attribute.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47248
91177308-0d34-0410-b5e6-
96231b3b80d8
Owen Anderson [Sun, 17 Feb 2008 21:29:08 +0000 (21:29 +0000)]
Teach getModRefInfo that memcpy, memmove, and memset don't "capture" memory addresses.
Also, noalias arguments are be considered "like" stack allocated ones for this purpose, because
the only way they can be modref'ed is if they escape somewhere in the current function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47247
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Sun, 17 Feb 2008 21:03:36 +0000 (21:03 +0000)]
Fold (-x + -y) -> -(x+y) which promotes better association, fixing
the second half of PR2047
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47244
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Sun, 17 Feb 2008 20:54:40 +0000 (20:54 +0000)]
fix pasto
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47242
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Sun, 17 Feb 2008 20:51:26 +0000 (20:51 +0000)]
Split up subtracts into add+negate if they have a reassociable use or operand
that is also a subtract. This implements PR2047 and Transforms/Reassociate/subtest2.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47241
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Sun, 17 Feb 2008 20:48:43 +0000 (20:48 +0000)]
upgrade and simplify this test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47240
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Sun, 17 Feb 2008 20:44:51 +0000 (20:44 +0000)]
make the logic for breaking up subtracts more explicit, no
functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47239
91177308-0d34-0410-b5e6-
96231b3b80d8
Tanya Lattner [Sun, 17 Feb 2008 20:02:20 +0000 (20:02 +0000)]
Remove llvm-upgrade.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47238
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Sun, 17 Feb 2008 19:43:57 +0000 (19:43 +0000)]
move PR2053 to here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47237
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Sun, 17 Feb 2008 00:15:25 +0000 (00:15 +0000)]
fix this test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47232
91177308-0d34-0410-b5e6-
96231b3b80d8
Tanya Lattner [Sun, 17 Feb 2008 00:15:09 +0000 (00:15 +0000)]
Remove llvm-upgrade
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47231
91177308-0d34-0410-b5e6-
96231b3b80d8
Tanya Lattner [Sun, 17 Feb 2008 00:13:09 +0000 (00:13 +0000)]
Remove llvm-upgrade.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47230
91177308-0d34-0410-b5e6-
96231b3b80d8
Chris Lattner [Sun, 17 Feb 2008 00:12:03 +0000 (00:12 +0000)]
this test isn't useful since we added @ notation for globals.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47229
91177308-0d34-0410-b5e6-
96231b3b80d8