Commit Graph

78353 Commits

Author SHA1 Message Date
Eli Friedman
c4c2a02485 Make SelectionDAG::InferPtrAlignment use llvm::ComputeMaskedBits instead of duplicating the logic for globals. Make llvm::ComputeMaskedBits handle GlobalVariables slightly more aggressively, to match what InferPtrAlignment knew how to do.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145304 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 22:48:22 +00:00
Evan Cheng
ed1c0c7f58 Revert r145273 and fix in SelectionDAG::InferPtrAlignment() instead.
Conservatively returns zero when the GV does not specify an alignment nor is it
initialized. Previously it returns ABI alignment for type of the GV. However, if
the type is a "packed" type, then the under-specified alignments is attached to
the load / store instructions. In that case, the alignment of the type cannot be
trusted.
rdar://10464621


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145300 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 22:37:34 +00:00
Daniel Dunbar
a483fc8e6f Fix some possible gcc-4.2 may be used uninitialized warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145292 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 22:19:32 +00:00
Nick Lewycky
a3980cccf7 Don't define these unless we plan to use them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145289 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 22:14:02 +00:00
Joe Abbey
54d3b83929 Merging two bullet points into one
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145287 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 22:07:12 +00:00
Evan Cheng
1c487869f5 DAG combine should not increase alignment of loads / stores with alignment less
than ABI alignment. These are loads / stores from / to "packed" data structures.
Their alignments are intentionally under-specified.

rdar://10301431


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145273 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 20:42:56 +00:00
Evan Cheng
678cda052c Add missing avx pattern.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145272 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 20:27:23 +00:00
Peter Collingbourne
f7fea72e16 Add OpenCL blurb to release notes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145270 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 20:04:12 +00:00
Chad Rosier
aa5656c6b9 80-column.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145267 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 19:59:09 +00:00
Bill Wendling
c80383095e Remove dead llvm.eh.sjlj.dispatchsetup intrinsic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145263 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 19:23:13 +00:00
Andrew Trick
ed38f1ca2e Remove the temporary flag -disable-unroll-scev and dead code.
SCEV should now be used for trip count analysis, not LoopInfo.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145262 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 19:22:09 +00:00
Eli Friedman
f9b1cd0c7f Add back a line I deleted by accident in r145141. Fixes uninitialized variable warnings and runtime failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145256 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 18:50:37 +00:00
Michael J. Spencer
60f790c329 Add object file related release notes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145254 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 18:20:09 +00:00
Jakob Stoklund Olesen
87f95dc852 Explain what ExeDepsFix does.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145253 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 18:03:11 +00:00
Rafael Espindola
30c5fa2499 Fix spelling/grammar errors found by Duncan.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145250 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 17:06:58 +00:00
Benjamin Kramer
39a2eb7dea Handle more cases in APInt::getLowBitsSet's fast path.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145249 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 16:56:38 +00:00
Bill Wendling
64acc57b23 Support a 'final' release candidate tag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145243 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 11:45:10 +00:00
Duncan Sands
4c0c5451c7 Silence wrong warnings from GCC about variables possibly being used
uninitialized: GCC doesn't understand that the variables are only used
if !UseImm, in which case they have been initialized.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145239 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 10:31:27 +00:00
Craig Topper
70b883b3a7 Add X86 instruction selection for VPERM2I128 when AVX2 is enabled. Merge VPERMILPS/VPERMILPD detection since they are pretty similar.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145238 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 10:14:51 +00:00
Bob Wilson
ae7e2a4bbb Add an optional separate install prefix for internal components. rdar://10217046
Some files installed by clang are not relevant for general users and we'd like
to be able to install them to a different location.  This adds a new
--with-internal-prefix configure option and a corresponding PROJ_internal_prefix
makefile variable, which defaults to the standard prefix.  A tool makefile
can specify that it should be installed to this internal prefix by defining
INTERNAL_TOOL.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145234 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 07:59:52 +00:00
NAKAMURA Takumi
f86186ee24 test/lit.cfg: Enable the feature 'asserts' to check output of llc -version.
llc knows whether he is compiled with -DNDEBUG.
|  Optimized build with assertions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145230 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 05:09:15 +00:00
NAKAMURA Takumi
b0c95fbaf9 lit/TestRunner.py: Use RemoveForce().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145223 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 01:55:08 +00:00
NAKAMURA Takumi
fc1a1870b5 lit/TestRunner.py: [Win32] Introduce WinWaitReleased(f), to wait for file handles to be released by children.
When wait() has finished, opened handles (especially writing stdout to file) might not be released immediately.
To wait for released, poll to attempt renaming.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145222 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 01:55:01 +00:00
Jakob Stoklund Olesen
09e61ca6af Add a blurb about the new ExecutionDepsFix pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145220 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 01:46:19 +00:00
Craig Topper
71c4c12232 Make isCommutedVSHUFP more like the way isCommutedSHUFP is handled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145218 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 01:14:24 +00:00
NAKAMURA Takumi
c73f3d1ce7 configure, config.h.in: Regenerate.
config.h.cmake: Synchronize to config.h.in.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145217 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 01:07:19 +00:00
Dylan Noblesmith
38831b014a use llvm-config.h in public header
The config.h file's macros collide with other projects that include
LLVM and shouldn't get exported.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145215 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 00:49:01 +00:00
Dylan Noblesmith
08b73a30bb rename ENABLE_THREADS to LLVM_ENABLE_THREADS
Now that it needs to be exported in a public header (Valgrind.h)
it should be prefixed to avoid collision with other projects.
Add it to llvm-config.h as well.

This'll require regenerating the configure script after this
commit, but I don't have the required autoconf version.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145214 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 00:48:58 +00:00
Dylan Noblesmith
81818fc770 update description of LLVM_DEFAULT_TARGET_TRIPLE
It was out of sync with the description in configure.ac/config.h.in.
Also re-alphabetize it from its position when it was LLVM_HOST_TRIPLE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145213 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28 00:48:53 +00:00
Nick Lewycky
bba40db072 Place the "cfg checksum" around a test. This was recently added in April 2011 to
gcc, though I thought it was older (my gcc 4.4 has it as a local patch. Whoops!)
This fixes PR10589.

Also add some debugging statements.

Remove GcnoFiles, the mapping from CompilationUnit to raw_ostream. Now that we
start by iterating over each CU and descending into them, there's no need to
maintain a mapping.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145208 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 23:22:20 +00:00
Chris Lattner
7c224460b6 dwarf parsing stuff.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145207 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 22:39:23 +00:00
Chris Lattner
d6cc2c2092 first pass of writing complete!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145206 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 22:36:22 +00:00
Chris Lattner
1cc489b71b arm and carve out a place ot mention segmented stacks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145204 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 22:12:32 +00:00
Rafael Espindola
70d2b17d52 Add a description of the status of segmented stacks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145201 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 22:05:46 +00:00
Chris Lattner
2f20602de3 optimize, mc, x86
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145200 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 22:03:34 +00:00
Craig Topper
9d7025b56b Merge detecting and handling for VSHUFPSY and VSHUFPDY since a lot of the code was similar for both.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145199 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 21:41:12 +00:00
Chris Lattner
064caf9f07 some writing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145198 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 21:30:28 +00:00
Chris Lattner
f5a3c426bd fix some out-of-date attribution.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145197 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 21:02:12 +00:00
Chris Lattner
1c80fbfeca distribute various bullets to different sections.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145196 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 20:51:47 +00:00
Chandler Carruth
51901d85f7 Prevent rotating the blocks of a loop (and thus getting a backedge to be
fallthrough) in cases where we might fail to rotate an exit to an outer
loop onto the end of the loop chain.

Having *some* rotation, but not performing this rotation, is the primary
fix of thep performance regression with -enable-block-placement for
Olden/em3d (a whopping 30% regression). Still working on reducing the
test case that actually exercises this and the new rotation strategy out
of this code, but I want to check if this regresses other test cases
first as that may indicate it isn't the correct fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145195 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 20:18:00 +00:00
Chris Lattner
70e2201628 rewrite the known problems section. Including a short list of individual bugs per target isn't particularly useful. Link to the target features matrix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145193 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 19:38:20 +00:00
Chris Lattner
4f0fe43fa0 move the detailed information about the EH rewrite to a comment, Bill is
blog'izing it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145192 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 19:26:30 +00:00
Chris Lattner
9e89671976 tweak subprojects' section
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145191 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 18:53:41 +00:00
Chris Lattner
1ab8ce9372 some random notes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145190 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 18:47:37 +00:00
Chris Lattner
c608b708ef remove a test that is using old-style llvm.dbg intrinsics, apparently only
fails on ppc and arm hosts.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145188 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 18:13:47 +00:00
Chandler Carruth
fac1305da1 Take two on rotating the block ordering of loops. My previous attempt
was centered around the premise of laying out a loop in a chain, and
then rotating that chain. This is good for preserving contiguous layout,
but bad for actually making sane rotations. In order to keep it safe,
I had to essentially make it impossible to rotate deeply nested loops.
The information needed to correctly reason about a deeply nested loop is
actually available -- *before* we layout the loop. We know the inner
loops are already fused into chains, etc. We lose information the moment
we actually lay out the loop.

The solution was the other alternative for this algorithm I discussed
with Benjamin and some others: rather than rotating the loop
after-the-fact, try to pick a profitable starting block for the loop's
layout, and then use our existing layout logic. I was worried about the
complexity of this "pick" step, but it turns out such complexity is
needed to handle all the important cases I keep teasing out of benchmarks.

This is, I'm afraid, a bit of a work-in-progress. It is still
misbehaving on some likely important cases I'm investigating in Olden.
It also isn't really tested. I'm going to try to craft some interesting
nested-loop test cases, but it's likely to be extremely time consuming
and I don't want to go there until I'm sure I'm testing the correct
behavior. Sadly I can't come up with a way of getting simple, fine
grained test cases for this logic. We need complex loop structures to
even trigger much of it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145183 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 13:34:33 +00:00
Chandler Carruth
790552c20f Revert r145180 as it is causing test failures on all the bots.
Original commit message:
Fixed ObjectFile functions:
- getSymbolOffset() renamed as getSymbolFileOffset()
- getSymbolFileOffset(), getSymbolAddress(), getRelocationAddress() returns same result for ELFObjectFile, MachOObjectFile and COFFObjectFile.
- added getRelocationOffset()
- fixed MachOObjectFile::getSymbolSize()
- fixed MachOObjectFile::getSymbolSection()
- fixed MachOObjectFile::getSymbolOffset() for symbols without section data.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145182 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 10:37:47 +00:00
Chandler Carruth
7096692fd9 Fix an impressive type-o / spell-o Duncan noticed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145181 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 10:32:16 +00:00
Danil Malyshev
9b24738bd1 Fixed ObjectFile functions:
- getSymbolOffset() renamed as getSymbolFileOffset()
- getSymbolFileOffset(), getSymbolAddress(), getRelocationAddress() returns same result for ELFObjectFile, MachOObjectFile and COFFObjectFile.
- added getRelocationOffset()
- fixed MachOObjectFile::getSymbolSize()
- fixed MachOObjectFile::getSymbolSection()
- fixed MachOObjectFile::getSymbolOffset() for symbols without section data.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145180 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 10:12:52 +00:00
Chandler Carruth
2eb5a744b1 Rework a bit of the implementation of loop block rotation to not rely so
heavily on AnalyzeBranch. That routine doesn't behave as we want given
that rotation occurs mid-way through re-ordering the function. Instead
merely check that there are not unanalyzable branching constructs
present, and then reason about the CFG via successor lists. This
actually simplifies my mental model for all of this as well.

The concrete result is that we now will rotate more loop chains. I've
added a test case from Olden highlighting the effect. There is still
a bit more to do here though in order to regain all of the performance
in Olden.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145179 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-27 09:22:53 +00:00