Jozef Kolek [Mon, 12 Jan 2015 12:03:34 +0000 (12:03 +0000)]
[mips][microMIPS] Implement BEQZ16 and BNEZ16 instructions
Differential Revision: http://reviews.llvm.org/D5271
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225627
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Richard Smith [Mon, 12 Jan 2015 08:50:47 +0000 (08:50 +0000)]
Put this test's input in the Inputs directory where it belongs, rather than
reusing a file from a different test directory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225621
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Chandler Carruth [Mon, 12 Jan 2015 04:43:18 +0000 (04:43 +0000)]
Add a new utility script that helps update very simple regression tests.
This script is currently specific to x86 and limited to use with very
small regression or feature tests using 'llc' and 'FileCheck' in
a reasonably canonical way. It is in no way general purpose or robust at
this point. However, it works quite well for simple examples. Here is
the intended workflow:
- Make a change that requires updating N test files and M functions'
assertions within those files.
- Stash the change.
- Update those N test files' RUN-lines to look "canonical"[1].
- Refresh the FileCheck lines for either the entire file or select
functions by running this script.
- The script will parse the RUN lines and run the 'llc' binary you
give it according to each line, collecting the asm.
- It will then annotate each function with the appropriate FileCheck
comments to check every instruction from the start of the first
basic block to the last return.
- There will be numerous cases where the script either fails to remove
the old lines, or inserts checks which need to be manually editted,
but the manual edits tend to be deletions or replacements of
registers with FileCheck variables which are fast manual edits.
- A common pattern is to have the script insert complete checking of
every instruction, and then edit it down to only check the relevant
ones.
- Be careful to do all of these cleanups though! The script is
designed to make transferring and formatting the asm output of llc
into a test case fast, it is *not* designed to be authoratitive
about what constitutes a good test!
- Commit the nice fresh baseline of checks.
- Unstash your change and rebuild llc.
- Re-run script to regenerate the FileCheck annotations
- Remember to re-cleanup these annotations!!!
- Check the diff to make sure this is sane, checking the things you
expected it to, and check that the newly updated tests actually pass.
- Profit!
Also, I'm *terrible* at writing Python, and frankly I didn't spend a lot
of time making this script beautiful or well engineered. But it's useful
to me and may be useful to others so I thought I'd send it out.
http://reviews.llvm.org/D5546
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225618
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Hal Finkel [Mon, 12 Jan 2015 04:34:47 +0000 (04:34 +0000)]
[PowerPC] Fix calls to non-function objects
Looking at r225438 inspired me to see how the PowerPC backend handled the
situation (calling a bitcasted TLS global), and it turns out we also produced
an error (cannot select ...). What it means to "call" something that is not a
function is implementation and platform specific, but in the name of doing
something (besides crashing), this makes sure we do what GCC does (treat all
such calls as calls through a function pointer -- meaning that the pointer is
assumed, as is the convention on PPC, to point to a function descriptor
structure holding the actual code address along with the function's TOC pointer
and environment pointer). As GCC does, we now do the same for calling regular
(non-TLS) non-function globals too.
I'm not sure whether this is the most useful way to define the behavior, but at
least we won't be alone.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225617
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Simon Pilgrim [Sun, 11 Jan 2015 22:08:01 +0000 (22:08 +0000)]
[X86][SSE] Minor fix to VPBLENDW AVX2 commutation.
D6015 / rL221313 enabled commutation for SSE immediate blend instructions, but due to a typo the AVX2 VPBLENDW ymm instructions weren't flagged as commutative along with the others in the tables, but were still being commuted in code and tested for.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225612
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Daniel Sanders [Sun, 11 Jan 2015 10:48:20 +0000 (10:48 +0000)]
Fix silly mistake in release notes for Mips.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225608
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Daniel Sanders [Sun, 11 Jan 2015 10:34:52 +0000 (10:34 +0000)]
Added release notes for the Mips target.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225607
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David Majnemer [Sun, 11 Jan 2015 07:29:51 +0000 (07:29 +0000)]
Revert most of r225597
We can't rely on a DataLayout enlightened constant folder.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225599
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David Majnemer [Sun, 11 Jan 2015 05:08:57 +0000 (05:08 +0000)]
X86: Properly decode shuffle masks when the constant pool type is weird
It's possible for the constant pool entry for the shuffle mask to come
from a completely different operation. This occurs when Constants have
the same bit pattern but have different types.
Make DecodePSHUFBMask tolerant of types which, after a bitcast, are
appropriately sized vector types.
This fixes PR22188.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225597
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Saleem Abdulrasool [Sun, 11 Jan 2015 04:39:24 +0000 (04:39 +0000)]
X86: teach X86TargetLowering about L,M,O constraints
Teach the ISelLowering for X86 about the L,M,O target specific constraints.
Although, for the moment, clang performs constraint validation and prevents
passing along inline asm which may have immediate constant constraints violated,
the backend should be able to cope with the invalid inline asm a bit better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225596
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Saleem Abdulrasool [Sun, 11 Jan 2015 04:39:18 +0000 (04:39 +0000)]
ARM: add support for segment base relocations (SBREL)
This adds support for parsing and emitting the SBREL relocation variant for the
ARM target. Handling this relocation variant is necessary for supporting the
full ARM ELF specification. Addresses PR22128.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225595
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Chandler Carruth [Sun, 11 Jan 2015 01:36:20 +0000 (01:36 +0000)]
[x86] Remove some windows line endings that snuck into the tests here.
Folks on Windows, remember to set up your subversion to strip these when
submitting...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225593
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Chandler Carruth [Sun, 11 Jan 2015 01:16:26 +0000 (01:16 +0000)]
[ADT] Remove the unused default constructor for iterator_range.
This default constructor is a bit weird. It left the range in an invalid
state. That might be reasonable so that you can construct a local
iterator range and assign to it based on some logic to compute the range
you want. If folks would like to support that use case, I can add it
back, but in 238-odd usages none have actually wanted to do this. ;]
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225592
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Sanjoy Das [Sat, 10 Jan 2015 23:41:24 +0000 (23:41 +0000)]
Fix PR22179.
We were incorrectly inferring nsw for certain SCEVs. We can be more
aggressive here (see Richard Smith's comment on
http://llvm.org/bugs/show_bug.cgi?id=22179) but this change just
focuses on correctness.
Differential Revision: http://reviews.llvm.org/D6914
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225591
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Joerg Sonnenberger [Sat, 10 Jan 2015 21:49:36 +0000 (21:49 +0000)]
Revert r225500, it leads to infinite loops.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225590
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Simon Pilgrim [Sat, 10 Jan 2015 19:45:33 +0000 (19:45 +0000)]
[X86][SSE] Improved (v)insertps shuffle matching
In the current code we only attempt to match against insertps if we have exactly one element from the second input vector, irrespective of how much of the shuffle result is zeroable.
This patch checks to see if there is a single non-zeroable element from either input that requires insertion. It also supports matching of cases where only one of the inputs need to be referenced.
We also split insertps shuffle matching off into a new lowerVectorShuffleAsInsertPS function.
Differential Revision: http://reviews.llvm.org/D6879
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225589
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Ramkumar Ramachandra [Sat, 10 Jan 2015 19:11:29 +0000 (19:11 +0000)]
.gitignore: add some rules for tagging programs
Often, we miss committing new files, and 'arc diff' is supposed to warn
us about this. Unfortunately, because of the spurious output of the
command (due to unignored untracked files), we tend to ignore it and
lose information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225588
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Hal Finkel [Sat, 10 Jan 2015 08:21:59 +0000 (08:21 +0000)]
[PowerPC] Mark zext of a small scalar load as free
This initial implementation of PPCTargetLowering::isZExtFree marks as free
zexts of small scalar loads (that are not sign-extending). This callback is
used by SelectionDAGBuilder's RegsForValue::getCopyToRegs, and thus to
determine whether a zext or an anyext is used to lower illegally-typed PHIs.
Because later truncates of zero-extended values are nops, this allows for the
elimination of later unnecessary truncations.
Fixes the initial complaint associated with PR22120.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225584
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Justin Hibbits [Sat, 10 Jan 2015 07:50:31 +0000 (07:50 +0000)]
Remove some whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225583
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Dmitri Gribenko [Sat, 10 Jan 2015 05:03:29 +0000 (05:03 +0000)]
ConvertUTFTest: fix misleading empty line
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225580
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Saleem Abdulrasool [Sat, 10 Jan 2015 02:53:25 +0000 (02:53 +0000)]
tests: fix previous commit
The previous commit accidentally missed changes to the test output checking,
resulting in an errant failure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225577
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Saleem Abdulrasool [Sat, 10 Jan 2015 02:48:29 +0000 (02:48 +0000)]
test: merge ARM relocations test
There is a fair number of relocations that are part of the AAELF specification.
Simply merge the tests into a single test file, otherwise, we will end up with
far too many test files to test each relocation type. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225576
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Saleem Abdulrasool [Sat, 10 Jan 2015 02:48:25 +0000 (02:48 +0000)]
tests: convert a couple of ARM relocation tests to readobj
These tests are checking the relocation generation. Use the readobj output as
it is much easier to follow when glancing over the tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225575
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Justin Hibbits [Sat, 10 Jan 2015 01:57:21 +0000 (01:57 +0000)]
Fully fix Bug #22115.
Summary:
In the previous commit, the register was saved, but space was not allocated.
This resulted in the parameter save area potentially clobbering r30, leading to
nasty results.
Test Plan: Tests updated
Reviewers: hfinkel
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D6906
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225573
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Alexey Samsonov [Sat, 10 Jan 2015 00:46:38 +0000 (00:46 +0000)]
Fix undefined behavior (shift of negative value) in RuntimeDyldMachOAArch64::encodeAddend.
Test Plan: regression test suite with/without UBSan.
Reviewers: lhames, ributzka
Subscribers: aemerson, llvm-commits
Differential Revision: http://reviews.llvm.org/D6908
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225568
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Hal Finkel [Sat, 10 Jan 2015 00:31:10 +0000 (00:31 +0000)]
[PowerPC] Readjust the loop unrolling threshold
Now that the way that the partial unrolling threshold for small loops is used
to compute the unrolling factor as been corrected, a slightly smaller threshold
is preferable. This is expected; other targets may need to re-tune as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225566
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Hal Finkel [Sat, 10 Jan 2015 00:30:55 +0000 (00:30 +0000)]
[LoopUnroll] Fix the partial unrolling threshold for small loop sizes
When we compute the size of a loop, we include the branch on the backedge and
the comparison feeding the conditional branch. Under normal circumstances,
these don't get replicated with the rest of the loop body when we unroll. This
led to the somewhat surprising behavior that really small loops would not get
unrolled enough -- they could be unrolled more and the resulting loop would be
below the threshold, because we were assuming they'd take
(LoopSize * UnrollingFactor) instructions after unrolling, instead of
(((LoopSize-2) * UnrollingFactor)+2) instructions. This fixes that computation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225565
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Rafael Espindola [Sat, 10 Jan 2015 00:07:30 +0000 (00:07 +0000)]
Use the DiagnosticHandler to print diagnostics when reading bitcode.
The bitcode reading interface used std::error_code to report an error to the
callers and it is the callers job to print diagnostics.
This is not ideal for error handling or diagnostic reporting:
* For error handling, all that the callers care about is 3 possibilities:
* It worked
* The bitcode file is corrupted/invalid.
* The file is not bitcode at all.
* For diagnostic, it is user friendly to include far more information
about the invalid case so the user can find out what is wrong with the
bitcode file. This comes up, for example, when a developer introduces a
bug while extending the format.
The compromise we had was to have a lot of error codes.
With this patch we use the DiagnosticHandler to communicate with the
human and std::error_code to communicate with the caller.
This allows us to have far fewer error codes and adds the infrastructure to
print better diagnostics. This is so because the diagnostics are printed when
he issue is found. The code that detected the problem in alive in the stack and
can pass down as much context as needed. As an example the patch updates
test/Bitcode/invalid.ll.
Using a DiagnosticHandler also moves the fatal/non-fatal error decision to the
caller. A simple one like llvm-dis can just use fatal errors. The gold plugin
needs a bit more complex treatment because of being passed non-bitcode files. An
hypothetical interactive tool would make all bitcode errors non-fatal.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225562
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Alexey Samsonov [Fri, 9 Jan 2015 23:17:25 +0000 (23:17 +0000)]
Fix UBSan error reports in ValueMapCallbackVH and AssertingVH<T> empty/tombstone keys generation.
Summary:
One more attempt to fix UBSan reports: make sure DenseMapInfo::getEmptyKey()
and DenseMapInfo::getTombstoneKey() doesn't do any upcasts/downcasts to/from Value*.
Test Plan: check-llvm test suite with/without UBSan bootstrap
Reviewers: chandlerc, dexonsmith
Subscribers: llvm-commits, majnemer
Differential Revision: http://reviews.llvm.org/D6903
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225558
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Alexey Samsonov [Fri, 9 Jan 2015 23:17:23 +0000 (23:17 +0000)]
Disable Go bindings test under UBSan.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225557
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Andrew Kaylor [Fri, 9 Jan 2015 22:53:24 +0000 (22:53 +0000)]
Fix the JIT event listeners and replace the associated tests.
The changes to EventListenerCommon.h were contributed by Arch Robison.
This fixes bug 22095.
http://reviews.llvm.org/D6905
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225554
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Michael Zolotukhin [Fri, 9 Jan 2015 22:15:06 +0000 (22:15 +0000)]
Update comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225553
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Hans Wennborg [Fri, 9 Jan 2015 22:13:31 +0000 (22:13 +0000)]
SimplifyCFG: check uses of constant-foldable instrs in switch destinations (PR20210)
The previous code assumed that such instructions could not have any uses
outside CaseDest, with the motivation that the instruction could not
dominate CommonDest because CommonDest has phi nodes in it. That simply
isn't true; e.g., CommonDest could have an edge back to itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225552
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Simon Pilgrim [Fri, 9 Jan 2015 22:03:19 +0000 (22:03 +0000)]
[X86][SSE] Avoid vector byte shuffles with zero by using pshufb to create zeros
pshufb can shuffle in zero bytes as well as bytes from a source vector - we can use this to avoid having to shuffle 2 vectors and ORing the result when the used inputs from a vector are all zeroable.
Differential Revision: http://reviews.llvm.org/D6878
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225551
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Kevin Enderby [Fri, 9 Jan 2015 21:55:03 +0000 (21:55 +0000)]
Fix an ASAN failure introduced with r225537 (adding the -universal-headers to llvm-obdump).
And a fly by fix to some formatting issues with the same commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225550
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Rafael Espindola [Fri, 9 Jan 2015 20:55:09 +0000 (20:55 +0000)]
Add a testcase of llvm-lto error handling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225545
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Michael Zolotukhin [Fri, 9 Jan 2015 20:36:19 +0000 (20:36 +0000)]
Remove duplicating code. NFC.
The removed condition is checked in the previous loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225542
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Kevin Enderby [Fri, 9 Jan 2015 19:22:37 +0000 (19:22 +0000)]
Add the option, -universal-headers, used with -macho to print the Mach-O universal headers to llvm-objdump.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225537
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Tim Northover [Fri, 9 Jan 2015 19:19:56 +0000 (19:19 +0000)]
Re-reapply r221924: "[GVN] Perform Scalar PRE on gep indices that feed loads before
doing Load PRE"
It's not really expected to stick around, last time it provoked a weird LTO
build failure that I can't reproduce now, and the bot logs are long gone. I'll
re-revert it if the failures recur.
Original description: Perform Scalar PRE on gep indices that feed loads before
doing Load PRE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225536
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Lang Hames [Fri, 9 Jan 2015 18:55:42 +0000 (18:55 +0000)]
Recommit r224935 with a fix for the ObjC++/AArch64 bug that that revision
introduced.
A test case for the bug was already committed in r225385.
Patch by Rafael Espindola.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225534
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Duncan P. N. Exon Smith [Fri, 9 Jan 2015 17:53:27 +0000 (17:53 +0000)]
Revert "Bitcode: Move the DEBUG_LOC record to DEBUG_LOC_OLD"
This reverts commit r225498 (but leaves r225499, which was a worthy
cleanup).
My plan was to change `DEBUG_LOC` to store the `MDNode` directly rather
than its operands (patch was to go out this morning), but on reflection
it's not clear that it's strictly better. (I had missed that the
current code is unlikely to emit the `MDNode` at all.)
Conflicts:
lib/Bitcode/Reader/BitcodeReader.cpp (due to r225499)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225531
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Daniel Sanders [Fri, 9 Jan 2015 17:21:30 +0000 (17:21 +0000)]
[mips] Add support for accessing $gp as a named register.
Summary:
Mips Linux uses $gp to hold a pointer to thread info structure and accesses it
with a named register. This makes this work for LLVM.
The N32 ABI doesn't quite work yet since the frontend generates incorrect IR
for this case. It neglects to truncate the 64-bit GPR to a 32-bit value before
converting to a pointer. Given correct IR (as in the testcase in this patch),
it works correctly.
Reviewers: sstankovic, vmedic, atanasyan
Reviewed By: atanasyan
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D6893
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225529
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Sanjay Patel [Fri, 9 Jan 2015 17:11:51 +0000 (17:11 +0000)]
fix typos; remove names from comments; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225528
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Sanjay Patel [Fri, 9 Jan 2015 16:47:20 +0000 (16:47 +0000)]
remove names from comments; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225526
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Sanjay Patel [Fri, 9 Jan 2015 16:35:37 +0000 (16:35 +0000)]
fix typos; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225525
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Sanjay Patel [Fri, 9 Jan 2015 16:29:50 +0000 (16:29 +0000)]
fix typo; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225524
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Sanjay Patel [Fri, 9 Jan 2015 16:28:15 +0000 (16:28 +0000)]
more efficient use of a dyn_cast; no functional change intended
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225523
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Hal Finkel [Fri, 9 Jan 2015 15:51:16 +0000 (15:51 +0000)]
[PowerPC] Enable late partial unrolling on the POWER7
The P7 benefits from not have really-small loops so that we either have
multiple dispatch groups in the loop and/or the ability to form more-full
dispatch groups during scheduling. Setting the partial unrolling threshold to
44 seems good, empirically, for the P7. Compared to using no late partial
unrolling, this yields the following test-suite speedups:
SingleSource/Benchmarks/Adobe-C++/simple_types_constant_folding
-66.3253% +/- 24.1975%
SingleSource/Benchmarks/Misc-C++/oopack_v1p8
-44.0169% +/- 29.4881%
SingleSource/Benchmarks/Misc/pi
-27.8351% +/- 12.2712%
SingleSource/Benchmarks/Stanford/Bubblesort
-30.9898% +/- 22.4647%
I've speculatively added a similar setting for the P8. Also, I've noticed that
the unroller does not quite calculate the unrolling factor correctly for really
tiny loops because it neglects to account for the fact that not every loop body
replicant contains an ending branch and counter increment. I'll fix that later.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225522
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Toma Tabacu [Fri, 9 Jan 2015 15:00:30 +0000 (15:00 +0000)]
[mips] Add comment which explains why we need to change the assembler options before and after inline asm blocks. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225521
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Suyog Sarda [Fri, 9 Jan 2015 10:23:48 +0000 (10:23 +0000)]
Assumption that "VectorizedValue" will always be an Instruction is not correct.
It can be a constant or a vector argument.
ex :
define i32 @hadd(<4 x i32> %a) #0 {
entry:
%vecext = extractelement <4 x i32> %a, i32 0
%vecext1 = extractelement <4 x i32> %a, i32 1
%add = add i32 %vecext, %vecext1
%vecext2 = extractelement <4 x i32> %a, i32 2
%add3 = add i32 %add, %vecext2
%vecext4 = extractelement <4 x i32> %a, i32 3
%add5 = add i32 %add3, %vecext4
ret i32 %add5
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225517
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Saleem Abdulrasool [Fri, 9 Jan 2015 06:57:24 +0000 (06:57 +0000)]
ARM: add support for R_ARM_ABS16
Add support for R_ARM_ABS16 relocation mapping. Addresses PR22156.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225510
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Saleem Abdulrasool [Fri, 9 Jan 2015 06:57:18 +0000 (06:57 +0000)]
test: add additional test for SVN r225507
Add an additional test case to ensure that we generate the relocation even if
the thumb target is used.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225509
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Saleem Abdulrasool [Fri, 9 Jan 2015 05:59:12 +0000 (05:59 +0000)]
ARM: add support for R_ARM_ABS8 relocations
Add support for R_ARM_ABS8 relocation. Addresses PR22126.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225507
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Matthias Braun [Fri, 9 Jan 2015 03:01:31 +0000 (03:01 +0000)]
RegisterCoalescer: Fix removeCopyByCommutingDef with subreg liveness
The code that eliminated additional coalescable copies in
removeCopyByCommutingDef() used MergeValueNumberInto() which internally
may merge A into B or B into A. In this case A and B had different Def
points, so we have to reset ValNo.Def to the intended one after merging.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225503
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Matthias Braun [Fri, 9 Jan 2015 03:01:28 +0000 (03:01 +0000)]
RegisterCoalescer: Some cleanup in removeCopyByCommutingDef(), NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225502
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Matthias Braun [Fri, 9 Jan 2015 03:01:26 +0000 (03:01 +0000)]
RegisterCoalescer: No need to set kill flags, they are recompute later anyway
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225501
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Matthias Braun [Fri, 9 Jan 2015 03:01:23 +0000 (03:01 +0000)]
RegisterCoalescer: Turn some impossible conditions into asserts
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225500
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Duncan P. N. Exon Smith [Fri, 9 Jan 2015 02:51:45 +0000 (02:51 +0000)]
Bitcode: Share logic for last instruction, NFC
Share logic for getting the last instruction emitted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225499
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Duncan P. N. Exon Smith [Fri, 9 Jan 2015 02:48:48 +0000 (02:48 +0000)]
Bitcode: Move the DEBUG_LOC record to DEBUG_LOC_OLD
Prepare to simplify the `DebugLoc` record.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225498
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Hal Finkel [Fri, 9 Jan 2015 02:03:11 +0000 (02:03 +0000)]
[PowerPC] Add a flag for experimenting with subreg liveness tracking
This cannot yet be enabled by default, it causes ~50 miscompiles in the test
suite.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225497
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Hal Finkel [Fri, 9 Jan 2015 01:34:30 +0000 (01:34 +0000)]
[PowerPC] Fold [sz]ext with fp_to_int lowering where possible
On modern cores with lfiw[az]x, we can fold a sign or zero extension from i32
to i64 into the load necessary for an i64 -> fp conversion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225493
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Hal Finkel [Fri, 9 Jan 2015 01:29:29 +0000 (01:29 +0000)]
[DAGCombine] Remainder of fix to r225380 (More FMA folding opportunities)
As pointed out by Aditya (and Owen), when we elide an FP extend to form an FMA,
we need to extend the incoming operands so that the resulting node will really
be legal. This is currently enabled only for PowerPC, and it happens to work
there regardless, but this should fix the functionality for everyone else
should anyone else wish to use it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225492
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Chandler Carruth [Fri, 9 Jan 2015 01:24:36 +0000 (01:24 +0000)]
[x86] Add a flag to control the vector shuffle legality predicates that
complements the new vector shuffle lowering code path. This flag,
naturally, is *off* because we've not tested or evaluated the results of
this at all. However, the flag will make it much easier to evaluate
whether we can be this aggressive and whether there are missing vector
shuffle lowering optimizations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225491
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Chandler Carruth [Fri, 9 Jan 2015 00:48:47 +0000 (00:48 +0000)]
Cleaup ValueHandle to no longer keep a PointerIntPair for the Value*.
This was used previously for metadata but is no longer needed there. Not
doing this simplifies ValueHandle and will make it easier to fix things
like AssertingVH's DenseMapInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225487
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Hal Finkel [Fri, 9 Jan 2015 00:45:54 +0000 (00:45 +0000)]
Partial fix to r225380 (More FMA folding opportunities)
As pointed out by Aditya (and Owen), there are two things wrong with this code.
First, it adds patterns which elide FP extends when forming FMAs, and that might
not be profitable on all targets (it belongs behind the pre-existing
aggressive-FMA-formation flag). This is fixed by this change.
Second, the resulting nodes might have operands of different types (the
extensions need to be re-added). That will be fixed in the follow-up commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225485
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Philip Reames [Fri, 9 Jan 2015 00:26:45 +0000 (00:26 +0000)]
[REFACTOR] Push logic from MemDepPrinter into getNonLocalPointerDependency
Previously, MemDepPrinter handled volatile and unordered accesses without involving MemoryDependencyAnalysis. By making a slight tweak to the documented interface - which is respected by both callers - we can move this responsibility to MDA for the benefit of any future callers. This is basically just cleanup.
In the future, we may decide to extend MDA's non local dependency analysis to return useful results for ordered or volatile loads. I believe (but have not really checked in detail) that local dependency analyis does get useful results for ordered, but not volatile, loads.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225483
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Hans Wennborg [Fri, 9 Jan 2015 00:21:26 +0000 (00:21 +0000)]
ReleaseNotes.rst: these are for 3.6
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225482
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Philip Reames [Fri, 9 Jan 2015 00:04:22 +0000 (00:04 +0000)]
[Refactor] Have getNonLocalPointerDependency take the query instruction
Previously, MemoryDependenceAnalysis::getNonLocalPointerDependency was taking a list of properties about the instruction being queried. Since I'm about to need one more property to be passed down through the infrastructure - I need to know a query instruction is non-volatile in an inner helper - fix the interface once and for all.
I also added some assertions and behaviour clarifications around volatile and ordered field accesses. At the moment, this is mostly to document expected behaviour. The only non-standard instructions which can currently reach this are atomic, but unordered, loads and stores. Neither ordered or volatile accesses can reach here.
The call in GVN is protected by an isSimple check when it first considers the load. The calls in MemDepPrinter are protected by isUnordered checks. Both utilities also check isVolatile for loads and stores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225481
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Duncan P. N. Exon Smith [Thu, 8 Jan 2015 23:50:26 +0000 (23:50 +0000)]
LangRef: Add usage points for distinct MDNodes
Omission pointed out by Sean Silva!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225479
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Duncan P. N. Exon Smith [Thu, 8 Jan 2015 22:43:19 +0000 (22:43 +0000)]
IR: Drop TODO now that PR22111 is finished
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225477
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Duncan P. N. Exon Smith [Thu, 8 Jan 2015 22:42:30 +0000 (22:42 +0000)]
Utils: Keep distinct MDNodes distinct in MapMetadata()
Create new copies of distinct `MDNode`s instead of following the
uniquing `MDNode` logic.
Just like self-references (or other cycles), `MapMetadata()` creates a
new node. In practice most calls use `RF_NoModuleLevelChanges`, in
which case nothing is duplicated anyway.
Part of PR22111.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225476
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Duncan P. N. Exon Smith [Thu, 8 Jan 2015 22:38:29 +0000 (22:38 +0000)]
IR: Add 'distinct' MDNodes to bitcode and assembly
Propagate whether `MDNode`s are 'distinct' through the other types of IR
(assembly and bitcode). This adds the `distinct` keyword to assembly.
Currently, no one actually calls `MDNode::getDistinct()`, so these nodes
only get created for:
- self-references, which are never uniqued, and
- nodes whose operands are replaced that hit a uniquing collision.
The concept of distinct nodes is still not quite first-class, since
distinct-ness doesn't yet survive across `MapMetadata()`.
Part of PR22111.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225474
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Sanjay Patel [Thu, 8 Jan 2015 22:36:56 +0000 (22:36 +0000)]
remove function names from comments; NFC
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225473
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Hal Finkel [Thu, 8 Jan 2015 22:11:49 +0000 (22:11 +0000)]
[PowerPC] Mark all instructions as non-cheap for MachineLICM
MachineLICM uses a callback named hasLowDefLatency to determine if an
instruction def operand has a 'low' latency. If all relevant operands have a
'low' latency, the instruction is considered too cheap to hoist out of loops
even in low-register-pressure situations. On PowerPC cores, both the embedded
cores and the others, there is no reason to believe that this is a good choice:
all instructions have a cost inside a loop, and hoisting them when not limited
by register pressure is a reasonable default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225471
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Hal Finkel [Thu, 8 Jan 2015 22:10:48 +0000 (22:10 +0000)]
[MachineLICM] A command-line option to hoist even cheap instructions
Add a command-line option to enable hoisting even cheap instructions (in
low-register-pressure situations). This is turned off by default, but has
proved useful for testing purposes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225470
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Duncan P. N. Exon Smith [Thu, 8 Jan 2015 21:07:55 +0000 (21:07 +0000)]
CodeGen: Use handy new-fangled post-increment, NFC
Drive-by cleanup; I noticed this when reviewing the patch that became
r225466.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225468
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Akira Hatanaka [Thu, 8 Jan 2015 20:44:50 +0000 (20:44 +0000)]
[ARM] Fix a bug in constant island pass that was triggering an assertion.
The assert was being triggered when the distance between a constant pool entry
and its user exceeded the maximally allowed distance after thumb2 branch
shortening. A padding was inserted after a thumb2 branch instruction was shrunk,
which caused the user to be out of range. This is wrong as the padding should
have been inserted by the layout algorithm so that the distance between two
instructions doesn't grow later during thumb2 instruction optimization.
This commit fixes the code in ARMConstantIslands::createNewWater to call
computeBlockSize and set BasicBlock::Unalign when a branch instruction is
inserted to create new water after a basic block. A non-zero Unalign causes
the worst-case padding to be inserted when adjustBBOffsetsAfter is called to
recompute the basic block offsets.
rdar://problem/
19130476
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225467
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Duncan P. N. Exon Smith [Thu, 8 Jan 2015 20:44:33 +0000 (20:44 +0000)]
CodeGen: Use range-based for loops, NFC
Patch by Ramkumar Ramachandra!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225466
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Matt Arsenault [Thu, 8 Jan 2015 20:09:34 +0000 (20:09 +0000)]
Fix fcmp + fabs instcombines when using the intrinsic
This was only handling the libcall. This is another example
of why only the intrinsic should ever be used when it exists.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225465
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Eric Christopher [Thu, 8 Jan 2015 19:07:01 +0000 (19:07 +0000)]
The Kaleidoscope tutorial should be using "mcjit" for the library,
"jit" doesn't exist anymore.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225462
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Lang Hames [Thu, 8 Jan 2015 18:52:15 +0000 (18:52 +0000)]
[MCJIT] Remove a few redundant MCJIT tests, and drop the extraneous datalayout
strings from the copies that remain.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225460
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Eric Christopher [Thu, 8 Jan 2015 18:18:57 +0000 (18:18 +0000)]
Make the TargetMachine in MipsSubtarget a reference rather
than a pointer to make unifying code a bit easier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225459
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Eric Christopher [Thu, 8 Jan 2015 18:18:54 +0000 (18:18 +0000)]
Update include - this class doesn't use the target machine, but
only the subtarget.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225458
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Eric Christopher [Thu, 8 Jan 2015 18:18:53 +0000 (18:18 +0000)]
Fix a couple of odd formatting issues.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225457
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Eric Christopher [Thu, 8 Jan 2015 18:18:50 +0000 (18:18 +0000)]
This routine is in InstrInfo, there's no need to access it again.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225456
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Ahmed Bougacha [Thu, 8 Jan 2015 17:49:48 +0000 (17:49 +0000)]
[X86] Reflow comment. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225455
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Rafael Espindola [Thu, 8 Jan 2015 16:25:01 +0000 (16:25 +0000)]
clang-format. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225454
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Rafael Espindola [Thu, 8 Jan 2015 16:11:18 +0000 (16:11 +0000)]
Make this test a bit stricter.
It now checks for the end of the line or the opening '{'.
While at it, remove empty comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225451
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Justin Hibbits [Thu, 8 Jan 2015 15:47:19 +0000 (15:47 +0000)]
Add saving and restoring of r30 to the prologue and epilogue, respectively
Summary: The PIC additions didn't update the prologue and epilogue code to save and restore r30 (PIC base register). This does that.
Test Plan: Tests updated.
Reviewers: hfinkel
Reviewed By: hfinkel
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D6876
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225450
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Rafael Espindola [Thu, 8 Jan 2015 15:39:50 +0000 (15:39 +0000)]
Explicitly handle LinkOnceODRAutoHideLinkage. NFC. We already have a test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225449
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Rafael Espindola [Thu, 8 Jan 2015 15:36:32 +0000 (15:36 +0000)]
Update naming style and clang-format. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225448
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Kristof Beyls [Thu, 8 Jan 2015 15:09:14 +0000 (15:09 +0000)]
Fix large stack alignment codegen for ARM and Thumb2 targets
This partially fixes PR13007 (ARM CodeGen fails with large stack
alignment): for ARM and Thumb2 targets, but not for Thumb1, as it
seems stack alignment for Thumb1 targets hasn't been supported at
all.
Producing an aligned stack pointer is done by zero-ing out the lower
bits of the stack pointer. The BIC instruction was used for this.
However, the immediate field of the BIC instruction only allows to
encode an immediate that can zero out up to a maximum of the 8 lower
bits. When a larger alignment is requested, a BIC instruction cannot
be used; llvm was silently producing incorrect code in this case.
This commit fixes code generation for large stack aligments by
using the BFC instruction instead, when the BFC instruction is
available. When not, it uses 2 instructions: a right shift,
followed by a left shift to zero out the lower bits.
The lowering of ARM::Int_eh_sjlj_dispatchsetup still has code
that unconditionally uses BIC to realign the stack pointer, so it
very likely has the same problem. However, I wasn't able to
produce a test case for that. This commit adds an assert so that
the compiler will fail the assert instead of silently generating
wrong code if this is ever reached.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225446
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Tom Stellard [Thu, 8 Jan 2015 15:08:17 +0000 (15:08 +0000)]
R600/SI: Remove SIISelLowering::legalizeOperands()
Its functionality has been replaced by calling
SIInstrInfo::legalizeOperands() from
SIISelLowering::AdjstInstrPostInstrSelection() and running the
SIFoldOperands and SIShrinkInstructions passes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225445
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Elena Demikhovsky [Thu, 8 Jan 2015 12:29:19 +0000 (12:29 +0000)]
Masked Load/Store - fixed a bug in type legalization.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225441
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Michael Kuperstein [Thu, 8 Jan 2015 12:05:02 +0000 (12:05 +0000)]
Fix a think-o in the test for r225438.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225440
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Michael Kuperstein [Thu, 8 Jan 2015 11:59:43 +0000 (11:59 +0000)]
Fix include ordering, NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225439
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Michael Kuperstein [Thu, 8 Jan 2015 11:50:58 +0000 (11:50 +0000)]
[X86] Don't try to generate direct calls to TLS globals
The call lowering assumes that if the callee is a global, we want to emit a direct call.
This is correct for regular globals, but not for TLS ones.
Differential Revision: http://reviews.llvm.org/D6862
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225438
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Michael Kuperstein [Thu, 8 Jan 2015 11:04:38 +0000 (11:04 +0000)]
Move SPAdj logic from PEI into the targets (NFC)
PEI tries to keep track of how much starting or ending a call sequence adjusts the stack pointer by, so that it can resolve frame-index references. Currently, it takes a very simplistic view of how SP adjustments are done - both FrameStartOpcode and FrameDestroyOpcode adjust it exactly by the amount written in its first argument.
This view is in fact incorrect for some targets (e.g. due to stack re-alignment, or because it may want to adjust the stack pointer in multiple steps). However, that doesn't cause breakage, because most targets (the only in-tree exception appears to be 32-bit ARM) rely on being able to simplify the call frame pseudo-instructions earlier, so this code is never hit.
Moving the computation into TargetInstrInfo allows targets to override the way the adjustment is computed if they need to have a non-zero SPAdj.
Differential Revision: http://reviews.llvm.org/D6863
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225437
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Craig Topper [Thu, 8 Jan 2015 07:57:27 +0000 (07:57 +0000)]
Fix test case I missed in r225432.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225434
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Craig Topper [Thu, 8 Jan 2015 07:41:30 +0000 (07:41 +0000)]
[X86] Don't print 'dword ptr' or 'qword ptr' on the operand to some of the LEA variants in Intel syntax. The memory operand is inherently unsized.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225432
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