Commit Graph

314325 Commits

Author SHA1 Message Date
Artem Dergachev 7d4694547a [analyzer] Escape pointers stored into top-level parameters with destructors.
Writing stuff into an argument variable is usually equivalent to writing stuff
to a local variable: it will have no effect outside of the function.
There's an important exception from this rule: if the argument variable has
a non-trivial destructor, the destructor would be invoked on
the parent stack frame, exposing contents of the otherwise dead
argument variable to the caller.

If such argument is the last place where a pointer is stored before the function
exits and the function is the one we've started our analysis from (i.e., we have
no caller context for it), we currently diagnose a leak. This is incorrect
because the destructor of the argument still has access to the pointer.
The destructor may deallocate the pointer or even pass it further.

Treat writes into such argument regions as "escapes" instead, suppressing
spurious memory leak reports but not messing with dead symbol removal.

Differential Revision: https://reviews.llvm.org/D60112

llvm-svn: 358321
2019-04-13 02:01:45 +00:00
Kostya Serebryany 5e67abd91f [libFuzzer] speedup the merge step in the fork mode by merging only the files that have unique features.
llvm-svn: 358320
2019-04-13 01:57:33 +00:00
Philip Reames cebf0b3ab5 [StackMaps] Add explicit location size accessor to the stackmap parser
The reserved uint8 field in the location block of the stackmap record is used to denote the size of the location.

Patch By: jacob.hughes@kcl.ac.uk
Differential Revision: https://reviews.llvm.org/D59167

llvm-svn: 358319
2019-04-13 01:50:50 +00:00
Amara Emerson 93e58d2396 [AArch64][GlobalISel] Enable copy elision in the pre-legalizer combine and fix a crash.
This enables the simple copy combine that already exists in the CombinerHelper.
However, it exposed a bug in the GISelChangeObserver where it wouldn't clear a
set of MIs to process, and so would end up causing a crash when deleted MIs were
being added to the combiner worklist again.

Differential Revision: https://reviews.llvm.org/D60579

llvm-svn: 358318
2019-04-13 00:33:25 +00:00
Kostya Serebryany 4614cc3dfd [libFuzzer] add -features_dir= flag to dump unique input features on disk
llvm-svn: 358317
2019-04-13 00:20:31 +00:00
Julian Lettner c77bf89dcc [TSan][libdispatch] Move libdispatch tests out of Darwin folder
The libdispatch tests are now not tied to Darwin anymore. Move them to
their own platform-independent folder.

llvm-svn: 358316
2019-04-12 23:07:00 +00:00
Thomas Lively fef8de66a6 [WebAssembly] Add DataCount section to object files
Summary:
This ensures that object files will continue to validate as
WebAssembly modules in the presence of bulk memory operations. Engines
that don't support bulk memory operations will not recognize the
DataCount section and will report validation errors, but that's ok
because object files aren't supposed to be run directly anyway.

Reviewers: aheejin, dschuff, sbc100

Subscribers: jgravelle-google, hiraditya, sunfish, rupprecht, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60623

llvm-svn: 358315
2019-04-12 22:27:48 +00:00
Amara Emerson bdb5e4e4ca [GlobalISel] Fix a crash when handling an invalid MVT during call lowering.
This crash was introduced in r358032 as we try to construct an EVT from an MVT
in order to find the register type for the calling conv. Fall back instead of
trying to do this with an invalid MVT coming from i256.

llvm-svn: 358314
2019-04-12 22:05:46 +00:00
Alina Sbirlea f9f073a861 [MemorySSA] Add previous def to cache when found, even if trivial.
Summary:
When inserting a new Def, MemorySSA may be have non-minimal number of Phis.
While inserting, the walk to find the previous definition may cleanup minimal Phis.
When the last definition is trivial to obtain, we do not cache it.

It is possible while getting the previous definition for a Def to get two different answers:
- one that was straight-forward to find when walking the first path (a trivial phi in this case), and
- another that follows a cleanup of the trivial phi, it determines it may need additional Phi nodes, it inserts them and returns a new phi in the same position as the former trivial one.
While the Phis added for the second path are all redundant, they are not complete (the walk is only done upwards), and they are not properly cleaned up afterwards.

A way to fix this problem is to cache the straight-forward answer we got on the first walk.
The caching is only kept for the duration of a getPreviousDef call, and for Phis we use TrackingVH, so removing the trivial phi will lead to replacing it with the next dominating phi in the cache.
Resolves PR40749.

Reviewers: george.burgess.iv

Subscribers: jlebar, Prazek, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60634

llvm-svn: 358313
2019-04-12 21:58:52 +00:00
Amara Emerson 2806fd01a1 [AArch64][GlobalISel] Fix a crash when selecting shufflevectors with an undef mask element.
If a shufflevector's mask vector has an element with "undef" then the generic
instruction defining that element register is a G_IMPLICT_DEF instead of G_CONSTANT.
This fixes the selector to handle this case, and for now assumes that undef just means
zero. In future we'll optimize this case properly.

llvm-svn: 358312
2019-04-12 21:31:21 +00:00
Max Moroz b6e6d3c740 [libFuzzer] Fix DataFlow.cpp logic when tracing long inputs.
Summary:
1. Do not create DFSan labels for the bytes which we do not trace. This is where we run out of labels at the first place.
2. When dumping the traces on the disk, make sure to offset the label identifiers by the number of the first byte in the trace range.
3. For the last label, make sure to write it at the last position of the trace bit string, as that label represents the input size, not any particular byte.

Also fixed the bug with division in python which I've introduced when migrated the scripts to Python3 (`//` is required for integral division).

Otherwise, the scripts are wasting too much time unsuccessfully trying to
collect and process traces from the long inputs. For more context, see
https://github.com/google/oss-fuzz/issues/1632#issuecomment-481761789

Reviewers: kcc

Reviewed By: kcc

Subscribers: delcypher, #sanitizers, llvm-commits

Tags: #llvm, #sanitizers

Differential Revision: https://reviews.llvm.org/D60538

llvm-svn: 358311
2019-04-12 21:00:12 +00:00
Thomas Lively 9e27514996 [WebAssembly] Add mutable-globals to bleeding-edge CPU
Summary: This brings the backend in line with Clang.

Reviewers: aheejin, dschuff

Subscribers: sbc100, jgravelle-google, hiraditya, sunfish, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60594

llvm-svn: 358310
2019-04-12 20:39:53 +00:00
Julian Lettner 6636978243 [TSan][libdispatch] Don't link against Foundation
Now that our tests don't depend on Foundation anymore,
don't link it in.

llvm-svn: 358309
2019-04-12 20:27:05 +00:00
Julian Lettner bfcbd677c8 [TSan][libdispatch] Replace NSTemporaryDirectory in tests
After this change, most tests don't have a dependency on Foundation.

Note: To hold the file name `tempnam` allocates a new buffer. We leak
      this buffer (omit the free), but I don't think we need to care.

Reviewed By: kubamracek

Differential Revision: https://reviews.llvm.org/D60591

llvm-svn: 358308
2019-04-12 20:27:02 +00:00
Amy Huang 0d0334fe1b Relanding r357928 with fixed debuginfo check.
[MS] Add metadata for __declspec(allocator)

Original summary:
Emit !heapallocsite in the metadata for calls to functions marked with
__declspec(allocator). Eventually this will be emitted as S_HEAPALLOCSITE debug
info in codeview.

Differential Revision: https://reviews.llvm.org/D60237

llvm-svn: 358307
2019-04-12 20:25:30 +00:00
Kostya Serebryany 65132e2118 [libFuzzer] support -runs=N in the fork mode. Make sure we see one-line reports from ubsan in the fork mode. Test both
llvm-svn: 358306
2019-04-12 20:20:57 +00:00
Nikita Popov 3dc7c7ca31 [ConstantRange] Clarify makeGuaranteedNoWrapRegion() guarantees; NFC
makeGuaranteedNoWrapRegion() is actually makeExactNoWrapRegion() as
long as only one of NUW or NSW is specified. This is not obvious from
the current documentation, and some code seems to think that it is
only exact for single-element ranges. Clarify docs and add tests to
be more confident this really holds.

There are currently no users of makeGuaranteedNoWrapRegion() that
pass both NUW and NSW. I think it would be best to drop support for
this entirely and then rename the function to makeExactNoWrapRegion().

Knowing that the no-wrap region is exact is useful, because we can
backwards-constrain values. What I have in mind in particular is
that LVI should be able to constrain values on edges where the
with.overflow overflow flag is false.

Differential Revision: https://reviews.llvm.org/D60598

llvm-svn: 358305
2019-04-12 19:36:47 +00:00
Alina Sbirlea 2312a06c87 [SCEV] Add option to forget everything in SCEV.
Summary:
Create a method to forget everything in SCEV.
Add a cl::opt and PassManagerBuilder option to use this in LoopUnroll.

Motivation: Certain Halide applications spend a very long time compiling in forgetLoop, and prefer to forget everything and rebuild SCEV from scratch.
Sample difference in compile time reduction: 21.04 to 14.78 using current ToT release build.
Testcase showcasing this cannot be opensourced and is fairly large.

The option disabled by default, but it may be desirable to enable by
default. Evidence in favor (two difference runs on different days/ToT state):

File Before (s) After (s)
clang-9.bc 7267.91 6639.14
llvm-as.bc 194.12 194.12
llvm-dis.bc 62.50 62.50
opt.bc 1855.85 1857.53

File Before (s) After (s)
clang-9.bc 8588.70 7812.83
llvm-as.bc 196.20 194.78
llvm-dis.bc 61.55 61.97
opt.bc 1739.78 1886.26

Reviewers: sanjoy

Subscribers: mehdi_amini, jlebar, zzheng, javed.absar, dmgreen, jdoerfert, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60144

llvm-svn: 358304
2019-04-12 19:16:07 +00:00
Alina Sbirlea 57769382b1 [MemorySSA] Small fix for the clobber limit.
Summary:
After introducing the limit for clobber walking, `walkToPhiOrClobber` would assert that the limit is at least 1 on entry.
The test included triggered that assert.

The callsite in `tryOptimizePhi` making the calls to `walkToPhiOrClobber` is structured like this:
```
while (true) {
   if (getBlockingAccess()) { // calls walkToPhiOrClobber
   }
   for (...) {
     walkToPhiOrClobber();
   }
}
```

The cleanest fix is to check if the limit was reached inside `walkToPhiOrClobber`, and give an allowence of 1.
This approach not make any alias() calls (no calls to instructionClobbersQuery), so the performance condition is enforced.
The limit is set back to 0 if not used, as this provides info on the fact that we stopped before reaching a true clobber.

Reviewers: george.burgess.iv

Subscribers: jlebar, Prazek, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60479

llvm-svn: 358303
2019-04-12 18:48:46 +00:00
Louis Dionne 11bbb5831b [NFC] Add explicit return from main() in tests
llvm-svn: 358302
2019-04-12 18:38:58 +00:00
Nicolas Lesser b95559c964 [NFC] Move the export attribute after extern "C".
Not all compilers support attributes before `extern "C"`. gcc is the main one
that doesn't support it.

llvm-svn: 358301
2019-04-12 18:34:19 +00:00
Julian Lettner 43e27eb87f [TSan][libdispatch] Fix failing test
The ThreadSanitizer-x86_64-iossim configuration (different SDK) seems to
require an additional #include.

rdar://49856637

llvm-svn: 358300
2019-04-12 18:31:09 +00:00
Philip Reames b091cc081d [InstCombine] Fix a nasty miscompile introduced w/masked.gather demanded elts
This fixes a miscompile which was introduced in r356510 (https://reviews.llvm.org/D57372).

The problem is that the original patch removed pointer operands where the load results we're demanded, but without considering the legality of the load itself.  If the masked.gather had active, but undemanded, lanes, then we could end up creating a load which loaded from an undef address.  The result could be a segfault, or, in theory, an arbitrary read from a random memory location into an used register.  

llvm-svn: 358299
2019-04-12 18:26:56 +00:00
Nikita Popov 00a0d5d1de [CVP] Set NSW/NUW flags when simplifying with.overflow
When CVP determines that a with.overflow intrinsic cannot overflow,
it currently inserts a simple add/sub. As we already determined that
there can be no overflow, we should add the appropriate NUW/NSW flag.

Differential Revision: https://reviews.llvm.org/D60585

llvm-svn: 358298
2019-04-12 18:18:17 +00:00
Nikita Popov 7671fc71f6 [KnownBits] Add computeForAddCarry()
This is for D60460. computeForAddSub() essentially already supports
carries because it has to deal with subtractions. This revision
extracts a lower-level computeForAddCarry() function, which allows
computing the known bits for add (carry known zero), sub (carry known
one) and addcarry (carry unknown).

As we don't seem to have any yet, I've added a unit test file for
KnownBits and exhaustive tests for the new computeForAddCarry()
functionality, as well the existing computeForAddSub() function.

Differential Revision: https://reviews.llvm.org/D60522

llvm-svn: 358297
2019-04-12 18:18:08 +00:00
Philip Reames 7a60cd38af [Tests] Checkin a test demonstrating a miscompile so that patch which fixes it shows a clear diff
llvm-svn: 358296
2019-04-12 18:11:58 +00:00
Lang Hames c7c1f21525 Simplify decoupling between RuntimeDyld/RuntimeDyldChecker, add 'got_addr' util.
This patch reduces the number of functions in the interface between RuntimeDyld
and RuntimeDyldChecker by combining "GetXAddress" and "GetXContent" functions
into "GetXInfo" functions that return a struct describing both the address and
content. The GetStubOffset function is also replaced with a pair of utilities,
GetStubInfo and GetGOTInfo, that fit the new scheme. For RuntimeDyld both of
these functions will return the same result, but for the new JITLink linker
(https://reviews.llvm.org/D58704) these will provide the addresses of PLT stubs
and GOT entries respectively.

For JITLink's use, a 'got_addr' utility has been added to the rtdyld-check
language, and the syntax of 'got_addr' and 'stub_addr' has been changed: both
functions now take two arguments, a 'stub container name' and a target symbol
name. For llvm-rtdyld/RuntimeDyld the stub container name is the object file
name and section name, separated by a slash. E.g.:

rtdyld-check: *{8}(stub_addr(foo.o/__text, y)) = y

For the upcoming llvm-jitlink utility, which creates stubs on a per-file basis
rather than a per-section basis, the container name is just the file name. E.g.:

jitlink-check: *{8}(got_addr(foo.o, y)) = y
llvm-svn: 358295
2019-04-12 18:07:28 +00:00
Louis Dionne e4d6ac5d19 [libc++] Run back-deployment CI against previously-released libc++abi dylibs
We used to do it against the current system's libc++abi, which is not as
good as doing it with the libc++abi that matches the libc++ we're running
against.

Note that I made sure we were indeed picking up the provided libc++abi
by replacing it by something that doesn't work and watching it burn.

llvm-svn: 358294
2019-04-12 16:58:25 +00:00
Kadir Cetinkaya 5757bfbd54 [clangd] Fix an overflow inside a test
llvm-svn: 358293
2019-04-12 16:40:54 +00:00
Brendon Cahoon 4df216cd62 [Hexagon] Fix reuse bug in Vector Loop Carried Reuse pass
The Hexagon Vector Loop Carried Reuse pass was allowing reuse between
two shufflevectors with different masks. The reason is that the masks
are not instruction objects, so the code that checks each operand
just skipped over the operands.

This patch fixes the bug by checking if the operands are the same
when they are not instruction objects. If the objects are not the
same, then the code assumes that reuse cannot occur.

Differential Revision: https://reviews.llvm.org/D60019

llvm-svn: 358292
2019-04-12 16:37:12 +00:00
Sanjay Patel 5e4ad39af7 [DAGCombiner] narrow shuffle of concatenated vectors
// shuffle (concat X, undef), (concat Y, undef), Mask -->
// concat (shuffle X, Y, Mask0), (shuffle X, Y, Mask1)

The ARM changes with 'vtrn' and narrowed 'vuzp' are improvements.

The x86 changes look neutral or better. There's one test with an
extra instruction, but that could be reversed for a subtarget with
the right attributes. But by default, we want to avoid the 256-bit
op when possible (in my motivating benchmark, a handful of ymm ops
sprinkled into a sequence of xmm ops are triggering frequency
throttling on Haswell resulting in significantly worse perf).

Differential Revision: https://reviews.llvm.org/D60545

llvm-svn: 358291
2019-04-12 16:31:56 +00:00
Yaxun Liu 7bd8c37b17 [HIP] Use -mlink-builtin-bitcode to link device library
Use -mlink-builtin-bitcode instead of llvm-link to link
device library so that device library bitcode and user
device code can be compiled in a consistent way.

This is the same approach used by CUDA and OpenMP.

Differential Revision: https://reviews.llvm.org/D60513

llvm-svn: 358290
2019-04-12 16:23:31 +00:00
Zachary Turner e1bc9758cb [PDB Docs] Add some prose describing public and global symbols.
llvm-svn: 358289
2019-04-12 15:51:40 +00:00
Bruno Ricci 061865093f [AST][NFC] Add const children() accessors to all AST nodes
Systematically add the const-qualified version of children()
to all statement/expression nodes. Previously the const-qualified
variant was only defined for some nodes. NFC.

Patch by: Nicolas Manichon

Differential Revision: https://reviews.llvm.org/D60029

Reviewed By: riccibruno

llvm-svn: 358288
2019-04-12 15:36:02 +00:00
Hiroshi Yamauchi c27ff0d32d Add options for MaxLoadsPerMemcmp(OptSize).
Reviewers: davidxl

Reviewed By: davidxl

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60587

llvm-svn: 358287
2019-04-12 15:05:46 +00:00
Simon Pilgrim 6c8f4ada36 [X86][SSE] Recognise vXi1 boolean anyof/allof reduction patterns
Currently combineHorizontalPredicateResult only handles anyof/allof reduction patterns of legal types, which can be tricky to match as type legalization of bools can introduce bitcasts/truncs/extensions.

This patch extends combineHorizontalPredicateResult to recognise vXi1 bool reductions as well and uses the existing combineBitcastvxi1 helper to create the MOVMSK necessary to then compare the signmask result.

This ensures the accuracy of the reduction costs added in D60403 which assume the MOVMSK generation.

Differential Revision: https://reviews.llvm.org/D60610

llvm-svn: 358286
2019-04-12 14:22:57 +00:00
Pierre Gousseau 1e39fc1faa [asan] Add gcc 8's driver option -fsanitize=pointer-compare and -fsanitize=pointer-substract.
Disabled by default as this is still an experimental feature.

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D59221

llvm-svn: 358285
2019-04-12 14:14:58 +00:00
Pavel Labath ce0a88a5e1 Fix compiler warning introduced by r358261
Add a virtual destructor to the class with virtual methods.

llvm-svn: 358284
2019-04-12 13:48:01 +00:00
Bruno Ricci f6c7692d60 [AST] Forbid copy/move of statements/types
Statements, expressions and types are not supposed to be copied/moved,
and trying to do so is only going to result in tears. Someone tripped
on this a few days ago on the mailing list. NFC.

Differential Revision: https://reviews.llvm.org/D60123

Reviewed By: aaron.ballman

llvm-svn: 358283
2019-04-12 13:26:55 +00:00
Haojian Wu 6460883312 [clangd] Enable clang-tidy by default.
Summary:
We have turned on the flag internally for a while, and we don't receive complains.
Should be good to turn it on now.

If the projects doesn't have .clang-tidy files, no clang-tidy check will
be run.

Reviewers: sammccall

Subscribers: ilya-biryukov, ioeric, MaskRay, jkorous, arphaman, kadircet, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D60560

llvm-svn: 358282
2019-04-12 13:07:48 +00:00
Hans Wennborg 4e6b857922 Revert r358268 "[DebugInfo] DW_OP_deref_size in PrologEpilogInserter."
It causes clang to crash while building Chromium. See https://crbug.com/952230
for reproducer.

> The PrologEpilogInserter need to insert a DW_OP_deref_size before
> prepending a memory location expression to an already implicit
> expression to avoid having the existing expression act on the memory
> address instead of the value behind it.
>
> The reason for using DW_OP_deref_size and not plain DW_OP_deref is that
> big-endian targets need to read the right size as simply truncating a
> larger read would yield the wrong result (LSB bytes are not at the lower
> address).
>
> Differential Revision: https://reviews.llvm.org/D59687

llvm-svn: 358281
2019-04-12 12:54:52 +00:00
Eugene Leviant 88089fed9c [llvm-objcopy] Fill .symtab_shndx section correctly
Differential revision: https://reviews.llvm.org/D60555

llvm-svn: 358278
2019-04-12 11:59:30 +00:00
Fangrui Song fb79ff6ab5 Use llvm::upper_bound. NFC
llvm-svn: 358277
2019-04-12 11:31:16 +00:00
Diogo N. Sampaio eb312ddfdf [Aarch64] Add v8.2-a half precision element extract intrinsics
Summary:
Implements the intrinsics define on the ACLE to extract half precision fp scalar elements from float16x4_t and float16x8_t vector types.
a.k.a:
vduph_lane_f16
vduph_laneq_f16

Reviewers: pablooliveira, olista01, LukeGeeson, DavidSpickett

Reviewed By: DavidSpickett

Subscribers: DavidSpickett, javed.absar, kristof.beyls, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D60272

llvm-svn: 358276
2019-04-12 10:43:48 +00:00
Krasimir Georgiev 69150467b0 [clang-format] Use SpacesBeforeTrailingComments for "option" directive
Summary:
AnnotatingParser::next() is needed to implicitly set TT_BlockComment
versus TT_LineComment.  On most other paths through
AnnotatingParser::parseLine(), all tokens are consumed to achieve that.
This change updates one place where this wasn't done.

Contributed by @dchai!

Reviewers: krasimir

Reviewed By: krasimir

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D60541

llvm-svn: 358275
2019-04-12 10:11:34 +00:00
Kadir Cetinkaya 4f789e1b39 [clangd] Show template argument list in workspacesymbols and documentsymbols responses
Summary:
Last part of re-landing rC356541. Puts TemplateArgumentsList into
responses of the above mentioned two requests.

Reviewers: ioeric, ilya-biryukov

Subscribers: MaskRay, jkorous, arphaman, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D59641

llvm-svn: 358274
2019-04-12 10:09:37 +00:00
Kadir Cetinkaya 79063de95c [clangd] Add TemplateArgumentList into Symbol
Summary:
Part of re-landing rC356541 with D59599. Changes the way we store
template arguments, previous patch was storing them inside Name field of Symbol.
Which was violating the assumption:
```Symbol::Scope+Symbol::Name == clang::clangd::printQualifiedName```
which was made in multiple places inside codebase. This patch instead moves
those arguments into their own field. Currently the field is meant to be
human-readable, can be made structured if need be.

Reviewers: ioeric, ilya-biryukov, gribozavr

Subscribers: MaskRay, jkorous, arphaman, jdoerfert, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D59640

llvm-svn: 358273
2019-04-12 10:09:24 +00:00
Kadir Cetinkaya a80a52283c [clangd] Print template arguments helper
Summary:
Prepares ground for printing template arguments as written in the
source code, part of re-landing rC356541 with D59599 applied.

Reviewers: ioeric, ilya-biryukov

Subscribers: mgorny, MaskRay, jkorous, arphaman, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D59639

llvm-svn: 358272
2019-04-12 10:09:14 +00:00
Kang Zhang 2446f843ae [PowerPC] Add initialization for some ppc passes
Summary:

Some llc debug options need pass-name as the parameters.
But if we use the pass-name ppc-early-ret, we will get below error:
llc test.ll -stop-after ppc-early-ret
LLVM ERROR: "ppc-early-ret" pass is not registered.
Below pass-names have the pass is not registered error:
ppc-ctr-loops
ppc-ctr-loops-verify
ppc-loop-preinc-prep
ppc-toc-reg-deps
ppc-vsx-copy
ppc-early-ret
ppc-vsx-fma-mutate
ppc-vsx-swaps
ppc-reduce-cr-ops
ppc-qpx-load-splat
ppc-branch-coalescing
ppc-branch-select

Reviewed By: jsji

Differential Revision: https://reviews.llvm.org/D60248

llvm-svn: 358271
2019-04-12 09:59:40 +00:00
Jeremy Morse 32afe6a1f8 [DebugInfo] Fix pr41175 Dead Store Elimination missing debug loc
Bug: https://bugs.llvm.org/show_bug.cgi?id=41175

In the bug test case the DSE pass is shortening the range of memory that a
memset is working on. A getelementptr is generated so that the new
starting address can be passed to memset. This instruction was not given
a DebugLoc.

To fix the bug, copy the DebugLoc from the memset instruction.

Patch by Orlando Cazalet-Hyams!

Differential Revision: https://reviews.llvm.org/D60556

llvm-svn: 358270
2019-04-12 09:47:35 +00:00