Kevin Enderby [Thu, 8 Jan 2015 00:25:24 +0000 (00:25 +0000)]
Run clang-format on tools/llvm-objdump/MachODump.cpp again as some of my
previous changes got in with incorrect formatting. No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225417
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Matthias Braun [Thu, 8 Jan 2015 00:21:23 +0000 (00:21 +0000)]
RegisterCoalescer: Do not remove IMPLICIT_DEFS if they are required for subranges.
The register coalescer used to remove implicit_defs when they are
covered by the main range anyway. With subreg liveness tracking we can't
do that anymore in places where the IMPLICIT_DEF is required as begin of
a subregister liverange.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225416
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Matthias Braun [Wed, 7 Jan 2015 23:58:38 +0000 (23:58 +0000)]
RegisterCoalescer: Fix valuesIdentical() in some subrange merge cases.
I got confused and assumed SrcIdx/DstIdx of the CoalescerPair is a
subregister index in SrcReg/DstReg, but they are actually subregister
indices of the coalesced register that get you back to SrcReg/DstReg
when applied.
Fixed the bug, improved comments and simplified code accordingly.
Testcase by Tom Stellard!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225415
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Matthias Braun [Wed, 7 Jan 2015 23:35:11 +0000 (23:35 +0000)]
LiveInterval: Implement feedback by Quentin Colombet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225413
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Philip Reames [Wed, 7 Jan 2015 22:48:01 +0000 (22:48 +0000)]
[GC] improve testing around gc.relocate and fix a test
Patch by: Ramkumar Ramachandra <artagnon@gmail.com>
"This patch started out as an exploration of gc.relocate, and an attempt
to write a simple test in call-lowering. I then noticed that the
arguments of gc.relocate were not checked fully, so I went in and fixed
a few things. Finally, the most important outcome of this patch is that
my new error handling code caught a bug in a callsite in
stackmap-format."
Differential Revision: http://reviews.llvm.org/D6824
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225412
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Ahmed Bougacha [Wed, 7 Jan 2015 22:47:46 +0000 (22:47 +0000)]
[CodeGen] Add MVT::isValid to replace manual validity checks. NFC.
Now that we have MVT::FIRST_VALUETYPE (r225362), we can provide a method
checking that the MVT is valid, that is, it's in
[FIRST_VALUETYPE, LAST_VALUETYPE[.
This commit also uses it in a few asserts, that would previously accept
invalid MVTs, such as the default constructed -1. In that case,
the code following those asserts would do an out-of-bounds array access.
Using MVT::isValid, those assertions fail as expected when passed
invalid MVTs.
It feels clunky to have such a validity checking function, but it's
at least better than the alternative of broken manual checks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225411
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Tom Stellard [Wed, 7 Jan 2015 22:44:19 +0000 (22:44 +0000)]
R600/SI: Commute instructions to enable more folding opportunities
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225410
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Duncan P. N. Exon Smith [Wed, 7 Jan 2015 22:24:46 +0000 (22:24 +0000)]
IR: Add MDNode::getDistinct()
Allow distinct `MDNode`s to be explicitly created. There's no way (yet)
of representing their distinctness in assembly/bitcode, however, so this
still isn't first-class.
Part of PR22111.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225406
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Tom Stellard [Wed, 7 Jan 2015 22:18:27 +0000 (22:18 +0000)]
R600/SI: Only fold immediates that have one use
Folding the same immediate into multiple instruction will increase
program size, which can hurt performance.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225405
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Sean Silva [Wed, 7 Jan 2015 22:07:33 +0000 (22:07 +0000)]
Test commit.
Hopefully this one won't kill the git mirror...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225404
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Duncan P. N. Exon Smith [Wed, 7 Jan 2015 21:35:38 +0000 (21:35 +0000)]
IR: Add MDNode::isDistinct()
Add API to indicate whether an `MDNode` is distinct. A distinct node is
not stored in the MDNode uniquing tables, and will never be returned by
`MDNode::get()`.
Although distinct nodes are only currently created by uniquing
collisions (when operands change), PR22111 will allow these nodes to be
explicitly created.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225401
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Sean Silva [Wed, 7 Jan 2015 21:35:14 +0000 (21:35 +0000)]
[LangRef] PR22118: Hyphen is allowed in IR identifiers.
E.g. %-foo and %fo-o.
Thanks to eagle-eyed reporter Tomas Brukner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225400
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Adrian Prantl [Wed, 7 Jan 2015 21:35:13 +0000 (21:35 +0000)]
Update a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225399
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Duncan P. N. Exon Smith [Wed, 7 Jan 2015 21:32:27 +0000 (21:32 +0000)]
Linker: Don't use MDNode::replaceOperandWith()
`MDNode::replaceOperandWith()` changes all instances of metadata. Stop
using it when linking module flags, since (due to uniquing) the flag
values could be used by other metadata.
Instead, use new API `NamedMDNode::setOperand()` to update the reference
directly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225397
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Alexey Samsonov [Wed, 7 Jan 2015 21:27:26 +0000 (21:27 +0000)]
XFAIL several MCJIT EH tests under ASan and MSan bootstrap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225393
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Ahmed Bougacha [Wed, 7 Jan 2015 21:27:10 +0000 (21:27 +0000)]
[CodeGen] Use MVT iterator_ranges in legality loops. NFC intended.
A few loops do trickier things than just iterating on an MVT subset,
so I'll leave them be for now.
Follow-up of r225387.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225392
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Ahmed Bougacha [Wed, 7 Jan 2015 21:15:38 +0000 (21:15 +0000)]
[CodeGen] Add iterator_range for the MVT::SimpleValueType enum.
This commit adds a simple iterator over that enum, and a few
functions to create iterator ranges over the most common types.
Differential Revision: http://reviews.llvm.org/D6537
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225387
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Alexey Samsonov [Wed, 7 Jan 2015 21:13:30 +0000 (21:13 +0000)]
Fix uninitialized memory read in llvm-dsymutil for the second time.
This was already fixed by r224481, but apparently was accidentally
reverted in r225207.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225386
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Rafael Espindola [Wed, 7 Jan 2015 21:10:25 +0000 (21:10 +0000)]
Add a test that would have found the issue in r224935.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225385
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Chandler Carruth [Wed, 7 Jan 2015 21:08:54 +0000 (21:08 +0000)]
[git] Mark the llgo directory in the LLVM gitignore.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225384
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Kevin Enderby [Wed, 7 Jan 2015 21:02:18 +0000 (21:02 +0000)]
Slightly refactor things for llvm-objdump and the -macho option so it can be used with
options other than just -disassemble so that universal files can be used with other
options combined with -arch options.
No functional change to existing options and use. One test case added for the
additional functionality with a universal file an a -arch option.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225383
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Tom Stellard [Wed, 7 Jan 2015 20:59:25 +0000 (20:59 +0000)]
R600/SI: Remove VReg_32 register class
Use VGPR_32 register class instead. These two register classes were
identical and having separate classes was causing
SIInstrInfo::isLegalOperands() to be overly conservative in some cases.
This change is necessary to prevent future paches from missing a folding
opportunity in fneg-fabs.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225382
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Olivier Sallenave [Wed, 7 Jan 2015 20:54:17 +0000 (20:54 +0000)]
More FMA folding opportunities.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225380
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Adrian Prantl [Wed, 7 Jan 2015 20:52:22 +0000 (20:52 +0000)]
Reapply: Teach SROA how to update debug info for fragmented variables.
The two buildbot failures were addressed in LLVM r225378 and CFE r225359.
This rapplies commit 225272 without modifications.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225379
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Adrian Prantl [Wed, 7 Jan 2015 20:48:58 +0000 (20:48 +0000)]
Debug info: Allow aggregate types to be described by constants.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225378
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Colin LeMahieu [Wed, 7 Jan 2015 20:43:38 +0000 (20:43 +0000)]
[Hexagon] Fix 225372 USR register is not fully complete. Removing Uses = [USR] maintains existing functionality to old instructions without encodings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225377
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Colin LeMahieu [Wed, 7 Jan 2015 20:28:57 +0000 (20:28 +0000)]
[Hexagon] Adding floating point classification and creation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225374
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Tom Stellard [Wed, 7 Jan 2015 20:27:25 +0000 (20:27 +0000)]
R600/SI: Add a V_MOV_B64 pseudo instruction
This is used to simplify the SIFoldOperands pass and make it easier to
fold immediates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225373
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Colin LeMahieu [Wed, 7 Jan 2015 20:24:09 +0000 (20:24 +0000)]
[Hexagon] Adding encodings for v5 floating point instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225372
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Colin LeMahieu [Wed, 7 Jan 2015 20:07:28 +0000 (20:07 +0000)]
[Hexagon] Adding encoding for popcount, fastcorner, dword asr with rounding.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225371
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Tom Stellard [Wed, 7 Jan 2015 19:56:17 +0000 (19:56 +0000)]
R600/SI: Teach SIFoldOperands to split 64-bit constants when folding
This allows folding of sequences like:
s[0:1] = s_mov_b64 4
v_add_i32 v0, s0, v0
v_addc_u32 v1, s1, v1
into
v_add_i32 v0, 4, v0
v_add_i32 v1, 0, v1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225369
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Olivier Sallenave [Wed, 7 Jan 2015 19:45:17 +0000 (19:45 +0000)]
Test commit
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225368
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Ahmed Bougacha [Wed, 7 Jan 2015 19:38:50 +0000 (19:38 +0000)]
[X86] Fix 512->256 typo in comments. NFC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225367
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Philip Reames [Wed, 7 Jan 2015 19:13:28 +0000 (19:13 +0000)]
Add a missing file from 225365
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225366
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Philip Reames [Wed, 7 Jan 2015 19:07:50 +0000 (19:07 +0000)]
Introduce an example statepoint GC strategy
This change includes the most basic possible GCStrategy for a GC which is using the statepoint lowering code. At the moment, this GCStrategy doesn't really do much - aside from actually generate correct stackmaps that is - but I went ahead and added a few extra correctness checks as proof of concept. It's mostly here to provide documentation on how to do one, and to provide a point for various optimization legality hooks I'd like to add going forward. (For context, see the TODOs in InstCombine around gc.relocate.)
Most of the validation logic added here as proof of concept will soon move in to the Verifier. That move is dependent on http://reviews.llvm.org/D6811
There was discussion in the review thread about addrspace(1) being reserved for something. I'm going to follow up on a seperate llvmdev thread. If needed, I'll update all the code at once.
Note that I am deliberately not making a GCStrategy required to use gc.statepoints with this change. I want to give folks out of tree - including myself - a chance to migrate. In a week or two, I'll make having a GCStrategy be required for gc.statepoints. To this end, I added the gc tag to one of the test cases but not others.
Differential Revision: http://reviews.llvm.org/D6808
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225365
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Ahmed Bougacha [Wed, 7 Jan 2015 18:39:00 +0000 (18:39 +0000)]
[CodeGen] Add MVT::FIRST_VALUETYPE to avoid explicit 0. NFC.
Many places reference MVT::LAST_VALUETYPE when iterating over all
valid MVTs, but they usually start with 0.
With FIRST_VALUETYPE, we can avoid explicit constants when we really
should be using MVT::SimpleValueType.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225362
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David Majnemer [Wed, 7 Jan 2015 18:14:07 +0000 (18:14 +0000)]
X86: Allow the stack probe size to be configurable per function
LLVM emits stack probes on Windows targets to ensure that the stack is
correctly accessed. However, the amount of stack allocated before
emitting such a probe is hardcoded to 4096.
It is desirable to have this be configurable so that a function might
opt-out of stack probes. Our level of granularity is at the function
level instead of, say, the module level to permit proper generation of
code after LTO.
Patch by Andrew H!
N.B. The inliner needs to be updated to properly consider what happens
after inlining a function with a specific stack-probe-size into another
function with a different stack-probe-size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225360
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Tom Stellard [Wed, 7 Jan 2015 17:42:16 +0000 (17:42 +0000)]
R600/SI: Refactor SIFoldOperands to simplify immediate folding
This will make a future patch much less intrusive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225358
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Ahmed Bougacha [Wed, 7 Jan 2015 17:33:03 +0000 (17:33 +0000)]
[X86] Teach FCOPYSIGN lowering to recognize constant magnitudes.
For code like:
float foo(float x) { return copysign(1.0, x); }
We used to generate:
andps <-0.
000000e+00,0,0,0>, %xmm0
movss <1.
000000e+00>, %xmm1
andps <nan>, %xmm1
orps %xmm0, %xmm1
Basically doing an abs(1.0f) in the two middle instructions.
We now generate:
andps <-0.
000000e+00,0,0,0>, %xmm0
orps <1.
000000e+00,0,0,0>, %xmm0
Builds on cleanups r223415, r223542.
rdar://
19049548
Differential Revision: http://reviews.llvm.org/D6555
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225357
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Rafael Espindola [Wed, 7 Jan 2015 15:52:51 +0000 (15:52 +0000)]
Improvements to emacs packages for llvm and tablegen mode.
* Both files have valid package headers and footers (you can verify
with M-x checkdoc).
* Fixed style warnings generated by checkdoc.
* Fixed a byte-compiler warning in llvm-mode.el.
* Ensure that the modes are autoloaded, so users do not need to
(require 'llvm-mode) to use them.
Patch by Wilfred Hughes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225356
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Aaron Ballman [Wed, 7 Jan 2015 14:47:12 +0000 (14:47 +0000)]
Reverting r225319; since there is a folder named Examples, attempting to add a target of the same name causes problems for IDEs like Visual Studio.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225355
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Aaron Ballman [Wed, 7 Jan 2015 14:26:07 +0000 (14:26 +0000)]
Manually specify the folder that Kaleidescope should reside in for CMake-produced solutions that care about such things (like MSVC). This takes the Kaleidescope target out of the root solution folder and places it into the Examples folder where it belongs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225354
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Aaron Ballman [Wed, 7 Jan 2015 14:19:15 +0000 (14:19 +0000)]
Manually specify the folder that llvm-ranlib should reside in for CMake-produced solutions that care about such things (like MSVC). This takes llvm-ranlib out of the root solution folder and places it into the Tools folder where it belongs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225353
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Jonas Paulsson [Wed, 7 Jan 2015 13:38:29 +0000 (13:38 +0000)]
New method SDep::isNormalMemoryOrBarrier() in ScheduleDAGInstrs.cpp.
Used to iterate over previously added memory dependencies in
adjustChainDeps() and iterateChainSucc().
SDep::isCtrl() was previously used in these places, that also gave
anti and output edges. The code may be worse if these are followed,
because MisNeedChainEdge() will conservatively return true since a
non-memory instruction has no memory operands, and a false chain dep
will be added. It is also unnecessary since all memory accesses of
interest will be reached by memory dependencies, and there is a budget
limit for the number of edges traversed.
This problem was found on an out-of-tree target with enabled alias
analysis. No test case for an in-tree target has been found.
Reviewed by Hal Finkel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225351
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Jonas Paulsson [Wed, 7 Jan 2015 13:20:57 +0000 (13:20 +0000)]
Fix typos in comment and option help texts.
For -enable-aa-sched-mi and -use-tbaa-in-sched-mi.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225350
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Charlie Turner [Wed, 7 Jan 2015 11:37:40 +0000 (11:37 +0000)]
[ARM] Add missing Tag_DIV_use tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225348
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Asiri Rathnayake [Wed, 7 Jan 2015 11:22:58 +0000 (11:22 +0000)]
Fix regression in r225266.
The change in r225266 was reviewed under D6722. But the commit r225266 has a
typo, causing some MCHammer failures. This patch fixes it.
Change-Id: I573efcff25003af7478ac02548ebbe929fc7f5fd
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225347
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Chandler Carruth [Wed, 7 Jan 2015 11:14:51 +0000 (11:14 +0000)]
[PM] Give slightly less horrible names to the utility pass templates for
requiring and invalidating specific analyses. Also make their printed
names match their class names. Writing these out as prose really doesn't
make sense to me any more.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225346
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Craig Topper [Wed, 7 Jan 2015 08:10:38 +0000 (08:10 +0000)]
[X86] Merge a switch statement inside a default case of another switch statement on the same variable. There was no additional code in the default so this should be no functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225345
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Craig Topper [Wed, 7 Jan 2015 08:10:36 +0000 (08:10 +0000)]
[X86] Don't mark the shift by 1 instructions as isConvertibleToThreeAddress. There is no handling for them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225344
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Craig Topper [Wed, 7 Jan 2015 07:47:52 +0000 (07:47 +0000)]
[X86] Remove some unused TYPE enums from the disassembler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225343
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Karthik Bhat [Wed, 7 Jan 2015 06:34:34 +0000 (06:34 +0000)]
Revert r225165 and r225169
Even thouh gcc produces simialr instructions as Owen pointed out the two patterns aren’t equivalent in the case
where the original subtraction could have caused an overflow.
Reverting the same.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225341
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Ahmed Bougacha [Wed, 7 Jan 2015 02:42:01 +0000 (02:42 +0000)]
[ADT][SmallVector] Flip an assert comparison to avoid overflows yielding false-negatives. NFC.
r221973 changed SmallVector::operator[] to use size_t instead of unsigned.
Before that, on 64bit platforms, when a large index (say -1) was passed,
truncating it to unsigned avoided an overflow when computing 'begin() + idx',
and failed the range checking assertion, as expected.
With r221973, idx isn't truncated, so the addition wraps to
'(char*)begin() - 1', and doesn't fire anymore when it should have done so.
This commit changes the comparison to instead compute 'end() - begin()'
(i.e., 'size()'), which avoids potentially overflowing additions, and
correctly triggers the assertion when values such as -1 are passed.
Note that the problem already existed before that revision, on platforms
where sizeof(size_t) == sizeof(unsigned).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225338
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Duncan P. N. Exon Smith [Wed, 7 Jan 2015 02:10:42 +0000 (02:10 +0000)]
IR: Remove MDNode::getWhenValsUnresolved()
Remove dead code. Use `MDNode::get()` instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225335
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Duncan P. N. Exon Smith [Wed, 7 Jan 2015 02:09:51 +0000 (02:09 +0000)]
Remove invalid TODO
We can't drop support for RAUW entirely in `MDNode`s, since it's
required for graph construction. This comment was from before I'd done
the math on that (out-of-tree), and never should have been committed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225334
91177308-0d34-0410-b5e6-
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Chandler Carruth [Wed, 7 Jan 2015 01:58:35 +0000 (01:58 +0000)]
[PM] Fix a pretty nasty bug where the new pass manager would invalidate
passes too many time.
I think this is actually the issue that someone raised with me at the
developer's meeting and in an email, but that we never really got to the
bottom of. Having all the testing utilities made it much easier to dig
down and uncover the core issue.
When a pass manager is running many passes over a single function, we
need it to invalidate the analyses between each run so that they can be
re-computed as needed. We also need to track the intersection of
preserved higher-level analyses across all the passes that we run (for
example, if there is one module analysis which all the function analyses
preserve, we want to track that and propagate it). Unfortunately, this
interacted poorly with any enclosing pass adaptor between two IR units.
It would see the intersection of preserved analyses, and need to
invalidate any other analyses, but some of the un-preserved analyses
might have already been invalidated *and recomputed*! We would fail to
propagate the fact that the analysis had already been invalidated.
The solution to this struck me as really strange at first, but the more
I thought about it, the more natural it seemed. After a nice discussion
with Duncan about it on IRC, it seemed even nicer. The idea is that
invalidating an analysis *causes* it to be preserved! Preserving the
lack of result is trivial. If it is recomputed, great. Until something
*else* invalidates it again, we're good.
The consequence of this is that the invalidate methods on the analysis
manager which operate over many passes now consume their
PreservedAnalyses object, update it to "preserve" every analysis pass to
which it delivers an invalidation (regardless of whether the pass
chooses to be removed, or handles the invalidation itself by updating
itself). Then we return this augmented set from the invalidate routine,
letting the pass manager take the result and use the intersection of
*that* across each pass run to compute the final preserved set. This
accounts for all the places where the early invalidation of an analysis
has already "preserved" it for a future run.
I've beefed up the testing and adjusted the assertions to show that we
no longer repeatedly invalidate or compute the analyses across nested
pass managers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225333
91177308-0d34-0410-b5e6-
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Tom Stellard [Wed, 7 Jan 2015 01:17:37 +0000 (01:17 +0000)]
R600/SI: Add check for amdgcn triple forgotten in r225276.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225331
91177308-0d34-0410-b5e6-
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David Majnemer [Wed, 7 Jan 2015 00:39:50 +0000 (00:39 +0000)]
Analysis: Reformulate WillNotOverflowUnsignedAdd for reusability
WillNotOverflowUnsignedAdd's smarts will live in ValueTracking as
computeOverflowForUnsignedAdd. It now returns a tri-state result:
never overflows, always overflows and sometimes overflows.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225329
91177308-0d34-0410-b5e6-
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David Majnemer [Wed, 7 Jan 2015 00:39:42 +0000 (00:39 +0000)]
InstCombine: Just a small tidy-up
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225328
91177308-0d34-0410-b5e6-
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Hal Finkel [Wed, 7 Jan 2015 00:15:29 +0000 (00:15 +0000)]
[PowerPC] Transform a README.txt entry into a FIXME
Remove the README.txt entry regarding register allocation of CR logical ops,
and replace it with a FIXME in PPCInstrInfo.td. The text in the README.txt was
not really accurate, and thanks goes to Pat Haugen (and Bill Schmidt) from IBM
for clarifying what was intended and highlighting the relevant text in the ISA
specification.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225325
91177308-0d34-0410-b5e6-
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Duncan P. N. Exon Smith [Tue, 6 Jan 2015 23:52:35 +0000 (23:52 +0000)]
cmake: Fix 'examples' target after r225319
Add the missing `DEPENDS` keyword. r225319 did almost the right thing
(I didn't notice the problem with it because `Kaleidoscope-Ch8` wasn't
building at all).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225321
91177308-0d34-0410-b5e6-
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Duncan P. N. Exon Smith [Tue, 6 Jan 2015 23:48:22 +0000 (23:48 +0000)]
Kaleidoscope: Value => Metadata
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225320
91177308-0d34-0410-b5e6-
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Duncan P. N. Exon Smith [Tue, 6 Jan 2015 23:42:49 +0000 (23:42 +0000)]
cmake: Add 'examples' target
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225319
91177308-0d34-0410-b5e6-
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Duncan P. N. Exon Smith [Tue, 6 Jan 2015 23:39:37 +0000 (23:39 +0000)]
cmake: Add Kaleidoscope target
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225318
91177308-0d34-0410-b5e6-
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Eric Christopher [Tue, 6 Jan 2015 23:23:24 +0000 (23:23 +0000)]
Add a subdirectory in CMake for Chapter 8.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225315
91177308-0d34-0410-b5e6-
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Lang Hames [Tue, 6 Jan 2015 23:04:36 +0000 (23:04 +0000)]
Revert r224935 "Refactor duplicated code. No intended functionality change."
This is affecting the behavior of some ObjC++ / AArch64 test cases on Darwin.
Reverting to get the bots green while I track down the source of the changed
behavior.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225311
91177308-0d34-0410-b5e6-
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Matt Arsenault [Tue, 6 Jan 2015 23:00:46 +0000 (23:00 +0000)]
R600/SI: Add combine for isinfinite pattern
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225310
91177308-0d34-0410-b5e6-
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Matt Arsenault [Tue, 6 Jan 2015 23:00:44 +0000 (23:00 +0000)]
Add isNegative helper to ConstantFPSDNode
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225309
91177308-0d34-0410-b5e6-
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Matt Arsenault [Tue, 6 Jan 2015 23:00:43 +0000 (23:00 +0000)]
Add isInfinity helper to ConstantFPSDNode
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225308
91177308-0d34-0410-b5e6-
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Matt Arsenault [Tue, 6 Jan 2015 23:00:41 +0000 (23:00 +0000)]
R600/SI: Pattern match isinf to v_cmp_class instructions
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225307
91177308-0d34-0410-b5e6-
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Matt Arsenault [Tue, 6 Jan 2015 23:00:39 +0000 (23:00 +0000)]
R600/SI: Add basic DAG combines for fp_class
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225306
91177308-0d34-0410-b5e6-
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Matt Arsenault [Tue, 6 Jan 2015 23:00:37 +0000 (23:00 +0000)]
R600/SI: Add class intrinsic
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225305
91177308-0d34-0410-b5e6-
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Matt Arsenault [Tue, 6 Jan 2015 23:00:33 +0000 (23:00 +0000)]
Fix using wrong intrinsic in test
This is a leftover from renaming the intrinsic.
It's surprising the unknown llvm. intrinsic wasn't rejected.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225304
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Rafael Espindola [Tue, 6 Jan 2015 22:55:16 +0000 (22:55 +0000)]
Change the .ll syntax for comdats and add a syntactic sugar.
In order to make comdats always explicit in the IR, we decided to make
the syntax a bit more compact for the case of a GlobalObject in a
comdat with the same name.
Just dropping the $name causes problems for
@foo = globabl i32 0, comdat
$bar = comdat ...
and
declare void @foo() comdat
$bar = comdat ...
So the syntax is changed to
@g1 = globabl i32 0, comdat($c1)
@g2 = globabl i32 0, comdat
and
declare void @foo() comdat($c1)
declare void @foo() comdat
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225302
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Hal Finkel [Tue, 6 Jan 2015 22:31:02 +0000 (22:31 +0000)]
[PowerPC] Reuse a load operand in int->fp conversions
int->fp conversions on PPC must be done through memory loads and stores. On a
modern core, this process begins by storing the int value to memory, then
loading it using a (sometimes special) FP load instruction. Unfortunately, we
would do this even when the value to be converted was itself a load, and we can
just use that same memory location instead of copying it to another first.
There is a slight complication when handling int_to_fp(fp_to_int(x)) pairs,
because the fp_to_int operand has not been lowered when the int_to_fp is being
lowered. We handle this specially by invoking fp_to_int's lowering logic
(partially) and getting the necessary memory location (some trivial refactoring
was done to make this possible).
This is all somewhat ugly, and it would be nice if some later CodeGen stage
could just clean this stuff up, but because doing so would involve modifying
target-specific nodes (or instructions), it is not immediately clear how that
would work.
Also, remove a related entry from the README.txt for which we now generate
reasonable code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225301
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Mehdi Amini [Tue, 6 Jan 2015 20:05:02 +0000 (20:05 +0000)]
Use a Factory Method for MachineFunctionInfo Creation
The goal is to allows MachineFunctionInfo to override this create
function to customize the creation.
No change intended in existing backend in this patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225292
91177308-0d34-0410-b5e6-
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Colin LeMahieu [Tue, 6 Jan 2015 20:03:31 +0000 (20:03 +0000)]
[Hexagon] Adding compound jump encodings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225291
91177308-0d34-0410-b5e6-
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Tom Stellard [Tue, 6 Jan 2015 19:52:07 +0000 (19:52 +0000)]
R600/SI: Insert s_waitcnt before s_barrier instructions.
This ensures that all memory operations are complete when all threads
reach the barrier.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225290
91177308-0d34-0410-b5e6-
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Tom Stellard [Tue, 6 Jan 2015 19:52:04 +0000 (19:52 +0000)]
R600/SI: Fix dependency calculation for DS writes instructions in SIInsertWaits
In DS write instructions, the address operand comes before the value
operand(s) which is reversed from every other instruction type.
The SIInsertWait assumed that the first use for each instruction
was the value, so for DS write it was protecting the address
operand with s_waitcnt instructions when it should have been
protecting the value operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225289
91177308-0d34-0410-b5e6-
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Adrian Prantl [Tue, 6 Jan 2015 19:47:27 +0000 (19:47 +0000)]
Revert "Reapply: Teach SROA how to update debug info for fragmented variables."
because of a tsan buildbot failure.
This reverts commit 225272.
Fix should be coming soon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225288
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Colin LeMahieu [Tue, 6 Jan 2015 19:03:20 +0000 (19:03 +0000)]
[Hexagon] Adding encoding for misc v4 instructions: boundscheck, tlbmatch, dcfetch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225283
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Sanjoy Das [Tue, 6 Jan 2015 19:02:56 +0000 (19:02 +0000)]
This patch teaches IndVarSimplify to add nuw and nsw to certain kinds
of operations that provably don't overflow. For example, we can prove
%civ.inc below does not sign-overflow. With this change,
IndVarSimplify changes %civ.inc to an add nsw.
define i32 @foo(i32* %array, i32* %length_ptr, i32 %init) {
entry:
%length = load i32* %length_ptr, !range !0
%len.sub.1 = sub i32 %length, 1
%upper = icmp slt i32 %init, %len.sub.1
br i1 %upper, label %loop, label %exit
loop:
%civ = phi i32 [ %init, %entry ], [ %civ.inc, %latch ]
%civ.inc = add i32 %civ, 1
%cmp = icmp slt i32 %civ.inc, %length
br i1 %cmp, label %latch, label %break
latch:
store i32 0, i32* %array
%check = icmp slt i32 %civ.inc, %len.sub.1
br i1 %check, label %loop, label %break
break:
ret i32 %civ.inc
exit:
ret i32 42
}
Differential Revision: http://reviews.llvm.org/D6748
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225282
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Colin LeMahieu [Tue, 6 Jan 2015 18:38:26 +0000 (18:38 +0000)]
[Hexagon] Adding encoding information for absolute address loads.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225279
91177308-0d34-0410-b5e6-
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Mehdi Amini [Tue, 6 Jan 2015 18:20:04 +0000 (18:20 +0000)]
SelectionDAGBuilder: move constant initialization out of loop
No semantic change intended.
Reviewers: resistor
Differential Revision: http://reviews.llvm.org/D6834
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225278
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Tom Stellard [Tue, 6 Jan 2015 18:00:21 +0000 (18:00 +0000)]
R600/SI: Add a stub GCNTargetMachine
This is equivalent to the AMDGPUTargetMachine now, but it is the
starting point for separating R600 and GCN functionality into separate
targets.
It is recommened that users start using the gcn triple for GCN-based
GPUs, because using the r600 triple for these GPUs will be deprecated in
the future.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225277
91177308-0d34-0410-b5e6-
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Tom Stellard [Tue, 6 Jan 2015 18:00:00 +0000 (18:00 +0000)]
Triple: Add amdgcn triple
This will be used for AMD GPUs with the Graphics Core Next architecture,
which are currently using by the r600 triple.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225276
91177308-0d34-0410-b5e6-
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Tom Stellard [Tue, 6 Jan 2015 17:59:56 +0000 (17:59 +0000)]
R600/SI: Remove MachineFunction dump from AsmPrinter
The dump was dependent on a feature string, which meant that it couldn't
be disabled or enable on a per compile basis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225275
91177308-0d34-0410-b5e6-
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Andrea Di Biagio [Tue, 6 Jan 2015 17:41:18 +0000 (17:41 +0000)]
[CodeGenPrepare] Improved logic to speculate calls to cttz/ctlz.
This patch improves the logic added at revision 224899 (see review D6728) that
teaches the backend when it is profitable to speculate calls to cttz/ctlz.
The original algorithm conservatively avoided speculating more than one
instruction from a basic block in a control flow grap modelling an if-statement.
In particular, the only allowed instruction (excluding the terminator) was a
call to cttz/ctlz. However, there are cases where we could be less conservative
and still be able to speculate a call to cttz/ctlz.
With this patch, CodeGenPrepare now tries to speculate a cttz/ctlz if the
result is zero extended/truncated in the same basic block, and the zext/trunc
instruction is "free" for the target.
Added new test cases to CodeGen/X86/cttz-ctlz.ll
Differential Revision: http://reviews.llvm.org/D6853
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225274
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Adrian Prantl [Tue, 6 Jan 2015 17:14:10 +0000 (17:14 +0000)]
Reapply: Teach SROA how to update debug info for fragmented variables.
This also rolls in the changes discussed in http://reviews.llvm.org/D6766.
Defers migrating the debug info for new allocas until after all partitions
are created.
Thanks to Chandler for reviewing!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225272
91177308-0d34-0410-b5e6-
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Filipe Cabecinhas [Tue, 6 Jan 2015 17:08:26 +0000 (17:08 +0000)]
Don't loop endlessly for MachO files with 0 ncmds
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225271
91177308-0d34-0410-b5e6-
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Colin LeMahieu [Tue, 6 Jan 2015 16:52:38 +0000 (16:52 +0000)]
[Hexagon] Fix 225267. GP register is not yet fully implemented. Removing Uses [GP] maintains existing behavior.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225270
91177308-0d34-0410-b5e6-
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Adrian Prantl [Tue, 6 Jan 2015 16:50:25 +0000 (16:50 +0000)]
Implement a very basic colored syntax highlighting for llvm-dwarfdump.
The color scheme is the same as the one used by the colorize dwarfdump
script on Darwin.
A new --color option can be used to forcibly turn color on or off.
http://reviews.llvm.org/D6852
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225269
91177308-0d34-0410-b5e6-
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Hal Finkel [Tue, 6 Jan 2015 16:46:37 +0000 (16:46 +0000)]
[PowerPC] Add a regression test for r225251
In r225251, I removed an old entry from the README.txt file. While there are
several contributing factors (including pieces in Clang's ABI code), upon
further reflection, the backend part deserves a regression test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225268
91177308-0d34-0410-b5e6-
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Colin LeMahieu [Tue, 6 Jan 2015 16:15:15 +0000 (16:15 +0000)]
[Hexagon] Adding dealloc_return encoding and absolute address stores.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225267
91177308-0d34-0410-b5e6-
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Asiri Rathnayake [Tue, 6 Jan 2015 15:55:09 +0000 (15:55 +0000)]
[ARM] Cleanup so_imm* tblgen defintions
No functional changes. Support for ARM's modified immediate syntax was added
in r223113 and r223115 (review: D6408). That patch introduced the mod_imm*
tblegen definitions which renders the existing so_imm* definitions redundant.
This patch gets rid of them completely.
Reviewed as: D6722
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225266
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Matt Arsenault [Tue, 6 Jan 2015 15:50:59 +0000 (15:50 +0000)]
Convert fcmp with 0.0 from casted integers to icmp
This is already handled in general when it is known the
conversion can't lose bits with smaller integer types
casted into wider floating point types.
This pattern happens somewhat often in GPU programs that cast
workitem intrinsics to float, which are often compared with 0.
Specifically handle the special case of compares with zero which
should also be known to not lose information. I had a more general
version of this which allows equality compares if the casted float is
exactly representable in the integer, but I'm not 100% confident that
is always correct.
Also fold cases that aren't integers to true / false.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225265
91177308-0d34-0410-b5e6-
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NAKAMURA Takumi [Tue, 6 Jan 2015 09:44:44 +0000 (09:44 +0000)]
[CMake] Silence stderr on "COMMAND ${CMAKE_C_COMPILER} -Wl,--version". It was noisy during configuraion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225260
91177308-0d34-0410-b5e6-
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NAKAMURA Takumi [Tue, 6 Jan 2015 09:44:29 +0000 (09:44 +0000)]
Reformat.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225259
91177308-0d34-0410-b5e6-
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Chandler Carruth [Tue, 6 Jan 2015 09:10:47 +0000 (09:10 +0000)]
[PM] Hide a function we only use in an assert behind NDEBUG.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225258
91177308-0d34-0410-b5e6-
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Chandler Carruth [Tue, 6 Jan 2015 09:06:35 +0000 (09:06 +0000)]
[PM] Introduce a utility pass that preserves no analyses.
Use this to test that path of invalidation. This test actually shows
redundant invalidation here that is really bad. I'm going to work on
fixing that next, but wanted to commit the test harness now that its all
working.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225257
91177308-0d34-0410-b5e6-
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