Alexander Belyaev [Wed, 23 Nov 2022 17:17:13 +0000 (18:17 +0100)]
[mlir] Remove clone methods from DPS interface.
Differential Revision: https://reviews.llvm.org/D138586
Greg Clayton [Mon, 10 Oct 2022 23:30:49 +0000 (16:30 -0700)]
Add the ability to see when a type in incomplete.
-flimit-debug-info and other compiler options might end up removing debug info that is needed for debugging. LLDB marks these types as being forcefully completed in the metadata in the TypeSystem. These types should have been complete in the debug info but were not because the compiler omitted them to save space. When we can't find a suitable replacement for the type, we should let the user know that these types are incomplete to indicate there was an issue instead of just showing nothing for a type.
The solution is to display presented in this patch is to display "<incomplete type>" as the summary for any incomplete types. If there is a summary string or function that is provided for a type, but the type is currently forcefully completed, the installed summary will be ignored and we will display "<incomplete type>". This patch also exposes the ability to ask a SBType if it was forcefully completed with:
bool SBType::IsTypeForcefullyCompleted();
This will allow the user interface for a debugger to also detect this issue and possibly mark the variable display up on some way to indicate to the user the type is incomplete.
To show how this is diplayed, we can look at the existing output first for the example source file from the file: lldb/test/API/functionalities/limit-debug-info/main.cpp
(lldb) frame variable inherits_from_one inherits_from_two one_as_member two_as_member array_of_one array_of_two shadowed_one
(InheritsFromOne) ::inherits_from_one = (member = 47)
(InheritsFromTwo) ::inherits_from_two = (member = 47)
(OneAsMember) ::one_as_member = (one = member::One @ 0x0000000100008028, member = 47)
(TwoAsMember) ::two_as_member = (two = member::Two @ 0x0000000100008040, member = 47)
(array::One [3]) ::array_of_one = ([0] = array::One @ 0x0000000100008068, [1] = array::One @ 0x0000000100008069, [2] = array::One @ 0x000000010000806a)
(array::Two [3]) ::array_of_two = ([0] = array::Two @ 0x0000000100008098, [1] = array::Two @ 0x0000000100008099, [2] = array::Two @ 0x000000010000809a)
(ShadowedOne) ::shadowed_one = (member = 47)
(lldb) frame variable --show-types inherits_from_one inherits_from_two one_as_member two_as_member array_of_one array_of_two shadowed_one
(InheritsFromOne) ::inherits_from_one = {
(int) member = 47
}
(InheritsFromTwo) ::inherits_from_two = {
(int) member = 47
}
(OneAsMember) ::one_as_member = {
(member::One) one = {}
(int) member = 47
}
(TwoAsMember) ::two_as_member = {
(member::Two) two = {}
(int) member = 47
}
(array::One [3]) ::array_of_one = {
(array::One) [0] = {}
(array::One) [1] = {}
(array::One) [2] = {}
}
(array::Two [3]) ::array_of_two = {
(array::Two) [0] = {}
(array::Two) [1] = {}
(array::Two) [2] = {}
}
(ShadowedOne) ::shadowed_one = {
(int) member = 47
}
With this patch in place we can now see any classes that were forcefully completed to let us know that we are missing information:
(lldb) frame variable inherits_from_one inherits_from_two one_as_member two_as_member array_of_one array_of_two shadowed_one
(InheritsFromOne) ::inherits_from_one = (One = <incomplete type>, member = 47)
(InheritsFromTwo) ::inherits_from_two = (Two = <incomplete type>, member = 47)
(OneAsMember) ::one_as_member = (one = <incomplete type>, member = 47)
(TwoAsMember) ::two_as_member = (two = <incomplete type>, member = 47)
(array::One[3]) ::array_of_one = ([0] = <incomplete type>, [1] = <incomplete type>, [2] = <incomplete type>)
(array::Two[3]) ::array_of_two = ([0] = <incomplete type>, [1] = <incomplete type>, [2] = <incomplete type>)
(ShadowedOne) ::shadowed_one = (func_shadow::One = <incomplete type>, member = 47)
(lldb) frame variable --show-types inherits_from_one inherits_from_two one_as_member two_as_member array_of_one array_of_two shadowed_one
(InheritsFromOne) ::inherits_from_one = {
(One) One = <incomplete type> {}
(int) member = 47
}
(InheritsFromTwo) ::inherits_from_two = {
(Two) Two = <incomplete type> {}
(int) member = 47
}
(OneAsMember) ::one_as_member = {
(member::One) one = <incomplete type> {}
(int) member = 47
}
(TwoAsMember) ::two_as_member = {
(member::Two) two = <incomplete type> {}
(int) member = 47
}
(array::One[3]) ::array_of_one = {
(array::One) [0] = <incomplete type> {}
(array::One) [1] = <incomplete type> {}
(array::One) [2] = <incomplete type> {}
}
(array::Two[3]) ::array_of_two = {
(array::Two) [0] = <incomplete type> {}
(array::Two) [1] = <incomplete type> {}
(array::Two) [2] = <incomplete type> {}
}
(ShadowedOne) ::shadowed_one = {
(func_shadow::One) func_shadow::One = <incomplete type> {}
(int) member = 47
}
Differential Revision: https://reviews.llvm.org/D138259
Paulo Matos [Tue, 22 Nov 2022 14:58:58 +0000 (15:58 +0100)]
[WebAssembly] Remove unnecessary GEP insts from table tests
Removes the unnecessary GEP instructions from WebAssembly Table tests.
Differential Revision: https://reviews.llvm.org/D138569
Matt Arsenault [Tue, 22 Nov 2022 19:53:43 +0000 (14:53 -0500)]
CloneModule: Handling cloning ifuncs
This is tested in a future llvm-reduce patch.
Hassnaa Hamdi [Wed, 23 Nov 2022 15:48:46 +0000 (15:48 +0000)]
[AArch64][SME]: Generate streaming-compatible code for int-minmax, fp-minmax
1-To generate code compatible to streaming mode:
- enable custom lowering for SMIN, SMAX, UMIN, UMAX,
FMAXNUM, FMINNUM, FMAXIMUM, FMINIMUM.
2-Testing files:
- int-minmax.ll
- fp-minmax.ll
Reviewed By: david-arm, sdesmalen
Differential Revision: https://reviews.llvm.org/D138292
Hassnaa Hamdi [Fri, 18 Nov 2022 13:42:38 +0000 (13:42 +0000)]
[AArch64][SME]: Add precursory tests for D138292
Add testing files:
- int-minmax.ll
- fp-minmax.ll
Louis Dionne [Wed, 23 Nov 2022 15:31:21 +0000 (10:31 -0500)]
[libc++][NFC] Fix documentation build
Hans Wennborg [Wed, 23 Nov 2022 15:07:07 +0000 (16:07 +0100)]
Revert "Make -fsanitize=scudo use scudo_standalone. Delete check-scudo."
It broke the build, see comments on code review.
> Leaves the implementation and tests files in-place for right now, but
> deletes the ability to build the old sanitizer-common based scudo. This
> has been on life-support for a long time, and the newer scudo_standalone
> is much better supported and maintained.
>
> Also patches up some GWP-ASan wording, primarily related to the fact
> that -fsanitize=scudo now is scudo_standalone, and therefore the way to
> reference the GWP-ASan options through the environment variable has
> changed.
>
> Future follow-up patches will delete the original scudo, and migrate all
> its tests over to be part of the scudo_standalone test suite.
>
> Reviewed By: vitalybuka
>
> Differential Revision: https://reviews.llvm.org/D138157
This reverts commit
ab1a5991fe765d71c0f3262f25726d6b4d66a545.
Jonas Paulsson [Fri, 18 Nov 2022 20:22:01 +0000 (15:22 -0500)]
[SystemZ] Extend combineGET_CCMASK() to handle a truncated SELECT_CCMASK.
In cases where the SELECT_CCMASK has an additional user of the carry, a
truncated SELECT_CCMASK may result as the input to the GET_CCMASK, which need
to be recognized.
Fixes https://github.com/llvm/llvm-project/issues/59054
Reviewed By: Ulrich Weigand
Differential Revision: https://reviews.llvm.org/D138324
Balazs Benics [Wed, 23 Nov 2022 14:52:11 +0000 (15:52 +0100)]
[analyzer] getBinding should auto-detect type only if it was not given
Casting a pointer to a suitably large integral type by reinterpret-cast
should result in the same value as by using the `__builtin_bit_cast()`.
The compiler exploits this: https://godbolt.org/z/zMP3sG683
However, the analyzer does not bind the same symbolic value to these
expressions, resulting in weird situations, such as failing equality
checks and even results in crashes: https://godbolt.org/z/oeMP7cj8q
Previously, in the `RegionStoreManager::getBinding()` even if `T` was
non-null, we replaced it with `TVR->getValueType()` in case the `MR` was
`TypedValueRegion`.
It doesn't make much sense to auto-detect the type if the type is
already given. By not doing the auto-detection, we would just do the
right thing and perform the load by that type.
This means that we will cast the value to that type.
So, in this patch, I'm proposing to do auto-detection only if the type
was null.
Here is a snippet of code, annotated by the previous and new dump values.
`LocAsInteger` should wrap the `SymRegion`, since we want to load the
address as if it was an integer.
In none of the following cases should type auto-detection be triggered,
hence we should eventually reach an `evalCast()` to lazily cast the loaded
value into that type.
```lang=C++
void LValueToRValueBitCast_dumps(void *p, char (*array)[8]) {
clang_analyzer_dump(p); // remained: &SymRegion{reg_$0<void * p>}
clang_analyzer_dump(array); // remained: {{&SymRegion{reg_$1<char (*)[8] array>}
clang_analyzer_dump((unsigned long)p);
// remained: {{&SymRegion{reg_$0<void * p>} [as 64 bit integer]}}
clang_analyzer_dump(__builtin_bit_cast(unsigned long, p)); <--------- change #1
// previously: {{&SymRegion{reg_$0<void * p>}}}
// now: {{&SymRegion{reg_$0<void * p>} [as 64 bit integer]}}
clang_analyzer_dump((unsigned long)array); // remained: {{&SymRegion{reg_$1<char (*)[8] array>} [as 64 bit integer]}}
clang_analyzer_dump(__builtin_bit_cast(unsigned long, array)); <--------- change #2
// previously: {{&SymRegion{reg_$1<char (*)[8] array>}}}
// now: {{&SymRegion{reg_$1<char (*)[8] array>} [as 64 bit integer]}}
}
```
Reviewed By: xazax.hun
Differential Revision: https://reviews.llvm.org/D136603
Louis Dionne [Thu, 17 Nov 2022 15:47:18 +0000 (10:47 -0500)]
[libc++] Remove default definition of std::char_traits
This patch removes the base template implementation for std::char_traits.
If my reading of http://eel.is/c++draft/char.traits is correct, the
Standard mandates that the library provides specializations for several
types like char and wchar_t, but not any implementation in the base
template. Indeed, such an implementation is bound to be incorrect for
most types anyways, since things like `eof()` and `int_type` will definitely
have to be customized.
Since the base template implementation should not have worked for anyone,
this shouldn't be a breaking change (I expect that anyone defining a
custom character type today will already have to provide their own
specialization of char_traits). However, since we're aware of some users
of char_traits for unsigned char and signed char, we're keeping those two
specializations around for two releases to give people some time to migrate.
Differential Revision: https://reviews.llvm.org/D138307
Louis Dionne [Tue, 22 Nov 2022 18:42:33 +0000 (13:42 -0500)]
[libc++] Add missing __has_include checks for C headers not provided by libc++
This makes the library consistent in how it handles C library headers. For C headers provided by libc++,
we unconditionally include <foo.h> from <cfoo>, and then <foo.h> conditionally include_next <foo.h>.
For headers not provided by libc++, <cfoo> conditionally includes the system's <foo.h> directly.
Differential Revision: https://reviews.llvm.org/D138512
Nico Weber [Wed, 23 Nov 2022 14:40:17 +0000 (09:40 -0500)]
[lld/mac] Reorder an assert() and a printArchiveMemberLoad() call
No behavior difference in practice, but makes it possible to use `-t`
for debugging when that assert fails.
Michał Górny [Wed, 23 Nov 2022 12:19:47 +0000 (13:19 +0100)]
[flang] Fix unittests in standalone build for third-party move
Update external unittest rules for flang standalone builds to account
for the unittest components (gtest, gmock) being moved to `third-party`
directory, in
a11cd0d94ed3cabf0998a0289aead05da94c86eb.
Differential Revision: https://reviews.llvm.org/D138562
Emmmer [Sun, 6 Nov 2022 13:36:44 +0000 (21:36 +0800)]
[LLDB][RISCV] Add RV32F instruction support for EmulateInstructionRISCV
Add:
- RV32F instruction set.
- corresponding unittests.
Further work:
- RV32FC, RV64F and RV64FC instructions support.
- update execution exceptions to fcsr register in RVM instructions.
Reviewed By: DavidSpickett
Differential Revision: https://reviews.llvm.org/D138447
OCHyams [Wed, 23 Nov 2022 13:32:53 +0000 (13:32 +0000)]
[Assignment Tracking] Fix DbgVariableIntrinsic::replaceVariableLocationOp
Fix replaceVariableLocationOp unconditionally replacing the first operand of a
dbg.assign.
Reviewed By: jryans
Differential Revision: https://reviews.llvm.org/D138561
Matt Arsenault [Wed, 23 Nov 2022 04:59:26 +0000 (23:59 -0500)]
Utils: Fix deleting calls to null in non-0 address spaces
Louis Dionne [Wed, 23 Nov 2022 13:49:01 +0000 (08:49 -0500)]
[libc++][NFC] Use if-else chain instead of match, which is a Python 3.10 construct
Matt Devereau [Wed, 23 Nov 2022 07:51:42 +0000 (07:51 +0000)]
[VectorCombine] Enable scalarizeBinopOrCmp for scalable vectors
This reverts a change to exclude scalarizeBinopOrCmp in VectorCombine for
scalable vectors which caused poor scalable Binop codegen.
Differential Revision: https://reviews.llvm.org/D138545
Matthias Springer [Wed, 23 Nov 2022 10:56:07 +0000 (11:56 +0100)]
[mlir][utils] Fix invalid reshapes in ComposeCollapseOfExpandOp
Do not generate CollapseShapeOps/ExpandShapeOps that have the same source and result shape. Generate casts instead. Such reshapes became invalid with D138498.
Differential Revision: https://reviews.llvm.org/D138557
Sam McCall [Thu, 17 Nov 2022 17:06:28 +0000 (18:06 +0100)]
[include-cleaner] Show includes matched by refs in HTML report.
Demo: https://htmlpreview.github.io/?https://gist.githubusercontent.com/sam-mccall/
ecee6869e37af3db28089b64d8dce806/raw/
8736e64c45af411e2c2d72adaed2dfc4410a5b36/ASTTests.html%25202
Differential Revision: https://reviews.llvm.org/D138219
Pavel Labath [Wed, 23 Nov 2022 11:22:03 +0000 (12:22 +0100)]
Revert "Add runToBinaryEntry option for lldb-vscode"
This reverts commit
f0c16f89124f2dc0630162ff9ea23934f5b2b75b because it
breaks linux and mac bots.
Benjamin Kramer [Wed, 23 Nov 2022 12:02:58 +0000 (13:02 +0100)]
Revert "[SROA] `isVectorPromotionViable()`: memory intrinsics operate on vectors of bytes"
This reverts commit
cf624b23bc5d5a6161706d1663def49380ff816a. It
triggers crashes in clang, see the comments on github on the original
change.
David Green [Wed, 23 Nov 2022 12:10:54 +0000 (12:10 +0000)]
[AArch64] Add Host identifiers for cortex-a55, cortex-a510, cortex-a710 and cortex-x2.
I noticed these were missing, so this adds Host identifiers for
cortex-a55, cortex-a510, cortex-a710 and cortex-x2, taken from their
respective TRMs.
Differential Revision: https://reviews.llvm.org/D138497
zhongyunde [Wed, 23 Nov 2022 11:43:29 +0000 (19:43 +0800)]
[AArch64] Optimize cmp chain before legalization
* For case bcmp9, there is extras AND and EXTEND int the chain of OR/XOR,
which prevent the transform, so enable the optimize before legalization.
* The key IR frag related:
t37: i32,ch = load<(load (s8) from %ir.4), anyext from i8> t0, t11, undef:i64
t12: i64 = add t4, Constant:i64<8>
t38: i32,ch = load<(load (s8) from %ir.5), anyext from i8> t0, t12, undef:i64
t39: i32 = xor t37, t38
t40: i64 = any_extend t39
t42: i64 = and t40, Constant:i64<255>
Depends on D138398 to fix combine_setcc_glue
Reviewed By: dmgreen, bcl5980
Differential Revision: https://reviews.llvm.org/D137936
Haohai Wen [Wed, 23 Nov 2022 10:56:07 +0000 (18:56 +0800)]
[CostModel][X86] Fix permute latency cost
Avx512 permute latency should be 3 instead of 1.
Reviewed By: RKSimon
Differential Revision: https://reviews.llvm.org/D138427
Stefan Gränitz [Wed, 23 Nov 2022 10:03:57 +0000 (11:03 +0100)]
Reland "[CGObjC] Add run line for release mode in test arc-exceptions-seh.mm (NFC)"
This reverts commit
a37807ac8a3e9d2880a483940dcd33194f354bf8.
Differential Revision: https://reviews.llvm.org/D137942
Stefan Gränitz [Wed, 23 Nov 2022 10:19:13 +0000 (11:19 +0100)]
[ObjC][ARC] Fix UB in ObjCARCOpt with -enable-objc-arc-opts=false
When ObjCARCOpt::run() returned early, Changed and CFGChanged were never initialized. CFGChanged is read unconditionally afterwards. This came up in the course of D137942.
Benjamin Kramer [Wed, 23 Nov 2022 09:45:15 +0000 (10:45 +0100)]
[bazel] Add missing dependencies after
7a69a9d7ae
Alex Richardson [Mon, 20 Jun 2022 14:44:57 +0000 (15:44 +0100)]
[libc++] Fix __regex_word value when using newlib/picolibc
The ctype mask for newlib/picolibc is fully saturated, so __regex_word
has to overlap with one of the values. This commit uses the same workaround
as bionic did (uint16_t for char_class_type inside regex_traits). It
should be possible to have libc++ provide the default rune table instead,
but that will require a new mechanism to detect newlib inside __config
since the header defining the newlib/picolibc macros has not been included
yet inside __config. Doing it this way also avoids duplicating the ctype
table for newlib, reducing the global data size.
Differential Revision: https://reviews.llvm.org/D138195
Alex Richardson [Mon, 21 Nov 2022 12:46:00 +0000 (12:46 +0000)]
[SelectionDAG] Remove deprecated MemSDNode->getAlignment()
I noticed a an assertion error when building MIPS code that loaded from
NULL. Loading from NULL ends up being a load with maximum alignment, and
due to integer truncation the value maximum was interpreted as 0 and the
assertion in MipsDAGToDAGISel::Select() failed. This previously happened
to work, but the maximum alignment was increased in
df84c1fe78130a86445d57563dea742e1b85156a, so it no longer fits into a 32
bit integer.
Instead of just fixing the one MIPS case, this patch removes all uses of
the deprecated getAlignment() call and replaces them with getAlign().
Differential Revision: https://reviews.llvm.org/D138420
Alex Richardson [Tue, 22 Nov 2022 10:01:18 +0000 (10:01 +0000)]
[ASTContext][NFC] Remove getTargetAddressSpace(Qualifiers Q)
This simply calls getTargetAddressSpace(Q.getAddressSpace()) and there
are only two callers, so adjust those caller instead.
Kito Cheng [Mon, 21 Nov 2022 14:18:54 +0000 (22:18 +0800)]
[clang][RISCV][NFC] Prevent data race in RVVType::computeType
Introduce a RVVTypeCache to hold the cache instead of using a local
static variable to maintain a cache.
Also made construct of RVVType to private, make sure that could be only
created by a cache manager.
Reviewed By: sammccall
Differential Revision: https://reviews.llvm.org/D138429
Akshay Baviskar [Wed, 23 Nov 2022 08:16:18 +0000 (13:46 +0530)]
Add RegionBranchOpInterface for AffineIf Op
Adds RegionBranchOpInterface for AffineIf Op and tests it
using buffer deallocation pass.
Reviewed By: bondhugula
Differential Revision: https://reviews.llvm.org/D130962
Matthias Springer [Wed, 23 Nov 2022 08:19:00 +0000 (09:19 +0100)]
[mlir][tensor/memref] Disallow Collapse/ExpandShapeOps that do not reduce/increase the rank
CollapseShapeOp/ExpandShapeOp that do not change the rank (or increase/reduce it) are invalid.
Differential Revision: https://reviews.llvm.org/D138498
Nicolas Vasilache [Tue, 22 Nov 2022 10:55:58 +0000 (02:55 -0800)]
[NFC][mlir] VectorUtils / IndexingUtils simplifications and cleanups
This revision refactors and cleans up a bunch of infra related to vector, shapes and indexing into more reusable APIs.
Differential Revision: https://reviews.llvm.org/D138501
Max Kazantsev [Wed, 23 Nov 2022 07:38:24 +0000 (14:38 +0700)]
[SCEV][NFC] Fix typo in comment
WuXinlong [Tue, 22 Nov 2022 09:35:36 +0000 (17:35 +0800)]
Add MC support of RISCV Zcf Extension
This patch add the instructions of Zcf extension.
Zcf is a subset of C Ext which include the single-precision floating-point instructions.
Reviewed By: craig.topper
Differential Revision: https://reviews.llvm.org/D134176
Tom Stellard [Wed, 23 Nov 2022 06:56:55 +0000 (22:56 -0800)]
libclc: Use cmake files instead of llvm-config
Reviewed By: mgorny
Differential Revision: https://reviews.llvm.org/D137854
Michał Górny [Sat, 19 Nov 2022 19:54:54 +0000 (20:54 +0100)]
[cmake] Fix Findzstd.cmake to handle OpenBSD shared libraries
Fix Findzstd CMake to handle shared libraries on OpenBSD correctly.
This userland does not use shared library symlinks without SOVERSION,
so the result of find_library() does not ever end with
zstd_SHARED_LIBRARY_SUFFIX. To work around this, reverse the logic
to compare the result against zstd_STATIC_LIBRARY_SUFFIX and assume
shared library otherwise.
While at it, fix the conditions not to fall back to "result is static
library" path if it actually was recognized as a shared library but
zstd_shared target already existed.
Fixes #59056
Differential Revision: https://reviews.llvm.org/D138361
Fangrui Song [Wed, 23 Nov 2022 04:09:15 +0000 (20:09 -0800)]
[ELF] createSyntheticSections: simplify config->relocatable. NFC
We can add .riscv.attributes synthetic section here in the future.
Philip Reames [Wed, 23 Nov 2022 02:51:23 +0000 (18:51 -0800)]
[RISCV] Add callback plumbing for getArithmeticInstrCost [nfc]
Most of the code for this was taken from https://reviews.llvm.org/D133552, with one bug fix by me. I'm landing the plumbing so that we can focus on the cost model pieces in the review.
Daniel Rodríguez Troitiño [Wed, 23 Nov 2022 02:27:23 +0000 (18:27 -0800)]
[MachO][ObjCopy] Handle exports trie in LC_DYLD_INFO and LC_DYLD_EXPORTS_TRIE
The exports trie used to be pointed by the information in LC_DYLD_INFO,
but when chained fixups are present, the exports trie is pointed by
LC_DYLD_EXPORTS_TRIE instead.
Modify ObjCopy code to calculate the right offset and size needed
depending on the existence of LC_DYLD_INFO or LC_DYLD_EXPORTS_TRIE, read
the exports from either of those places, and write the export
information as pointed to either of those places.
Depends on D134571.
Reviewed By: alexander-shaposhnikov
Differential Revision: https://reviews.llvm.org/D137879
Matt Arsenault [Wed, 23 Nov 2022 02:02:20 +0000 (21:02 -0500)]
GlobalIFunc: Make ifunc respect function address spaces
Matt Arsenault [Fri, 11 Nov 2022 19:54:55 +0000 (11:54 -0800)]
InstCombine: Fold some identities for canonicalize
Equality is directly stated as true in the LangRef,
and I believe this works for every compare type.
Matt Arsenault [Fri, 11 Nov 2022 19:24:09 +0000 (11:24 -0800)]
InstCombine: Add baseline tests for canonicalize identities
Haohai Wen [Wed, 23 Nov 2022 01:40:50 +0000 (09:40 +0800)]
[CostModel][X86] Add CostKinds test coverage for shufflevector instruction
Reviewed By: RKSimon
Differential Revision: https://reviews.llvm.org/D138485
Ruiling Song [Mon, 21 Nov 2022 07:33:18 +0000 (15:33 +0800)]
[AMDGPU][InsertWaits] No wait for WAW for global/scratch_load
global/scratch_load will return in order they are issued. No
need to insert a s_waitcnt for WAW hazard.
Reviewed By: foad
Differential Revision: https://reviews.llvm.org/D138476
Daniel Rodríguez Troitiño [Tue, 22 Nov 2022 23:12:27 +0000 (15:12 -0800)]
[MachO] Support exports trie in both LC_DYLD_INFO and LC_DYLD_EXPORTS_TRIE
The exports trie used to be pointed by the information in LC_DYLD_INFO,
but when chained fixups are present, the exports trie is pointed by
LC_DYLD_EXPORTS_TRIE instead.
Modify the Object library to give access to the information pointed by
each of the load commands, and to fallback from one into the other when
the exports are requested.
Modify ObjectYAML to support dumping the export trie when pointed by
LC_DYLD_EXPORTS_TRIE and to parse the existence of a export trie also
when the load command is present.
This is a split of D134250 with improvements on top.
Reviewed By: alexander-shaposhnikov
Differential Revision: https://reviews.llvm.org/D134571
Phoebe Wang [Wed, 23 Nov 2022 01:05:59 +0000 (09:05 +0800)]
[X86] Use lock add/sub/or/and/xor for cases that we only care about the EFLAGS (negated cases)
This fixes #58685
Reviewed By: RKSimon
Differential Revision: https://reviews.llvm.org/D138428
Xiang Li [Wed, 23 Nov 2022 01:34:45 +0000 (17:34 -0800)]
[NFC][DirectX backend] Update header to fix build error.
Fix build error caused by createPrintModulePass moving to diffrent
header.
Ben Shi [Thu, 17 Nov 2022 12:35:55 +0000 (20:35 +0800)]
[AVR] Fix wrong ABI of AVRTiny.
A scalar which exceeds 4 bytes should be returned via stack, other
than via registers, on an AVRTiny device.
Reviewed By: aykevl
Differential Revision: https://reviews.llvm.org/D138201
Nico Weber [Fri, 18 Nov 2022 21:02:34 +0000 (16:02 -0500)]
[bolt] Stop setting config.llvm_plugin_ext in lit.site.cfg.py.in
config.llvm_plugin_ext is used by lit to set the %pluginext
substitution. bolt's tests don't use %pluginext, so they don't
need to set config.llvm_plugin_ext.
Differential Revision: https://reviews.llvm.org/D138325
chenglin.bi [Wed, 23 Nov 2022 01:27:26 +0000 (09:27 +0800)]
[DAGCombiner] fold or (xor x, y),? patterns
or (xor x, y), x --> or x, y
or (xor x, y), y --> or x, y
or (xor x, y), (and x, y) --> or x, y
or (xor x, y), (or x, y) --> or x, y
Reviewed By: foad
Differential Revision: https://reviews.llvm.org/D138401
Fangrui Song [Wed, 23 Nov 2022 01:01:39 +0000 (17:01 -0800)]
[PPC] Undefine __ppc64__ to match GCC
GCC only defines `__ppc64__` for darwin while the darwin support has been
removed from llvm-project. The existence of `__ppc64__` makes some software
think we are compiling for big-endian PowerPC Mac; also it lures users to write
code which is not portable to GCC.
It is straightforward if a distro wants to keep the macro: add
`-D__ppc64__=1` to a Clang configuration file.
Reviewed By: thesamesam, nemanjai
Differential Revision: https://reviews.llvm.org/D137511
Peiming Liu [Wed, 23 Nov 2022 00:43:10 +0000 (00:43 +0000)]
[mlir][sparse] fix compiler warning when using release build.
Differential Revision: https://reviews.llvm.org/D138533
Mehdi Amini [Thu, 17 Nov 2022 10:40:56 +0000 (10:40 +0000)]
Apply clang-tidy fixes for readability-simplify-boolean-expr in CSE.cpp (NFC)
Mehdi Amini [Thu, 17 Nov 2022 10:15:21 +0000 (10:15 +0000)]
Apply clang-tidy fixes for llvm-include-order in FileUtilities.cpp (NFC)
Fangrui Song [Wed, 23 Nov 2022 00:47:33 +0000 (16:47 -0800)]
[asan] Don't demangle __odr_asan_gen_* symbols
This relands the ODR indicator part of D138095 (reverted by
06c74b5e7367b41e9b4ea3d74c971aace5681fb8):
a `__odr_asan_gen_*` symbol should use a mangled name as its associated symbol does.
Alexander Yermolovich [Wed, 23 Nov 2022 00:28:11 +0000 (16:28 -0800)]
[BOLT][DWARF] Re-enable DWARF5 for asm-func-debug tests
Now that BOLT supports DWARF5 re-enabling it for these two tests. This is update
to https://reviews.llvm.org/D125366
Reviewed By: rafauler
Differential Revision: https://reviews.llvm.org/D138338
Fangrui Song [Wed, 23 Nov 2022 00:29:24 +0000 (16:29 -0800)]
Revert D138095 Use InernalAlloc in DemangleCXXABI
Broke 2/3 tests on macOS which seem to be related to
`free(demangled_name)` in DemangleCXXABI.
Roman Lebedev [Wed, 23 Nov 2022 00:21:25 +0000 (03:21 +0300)]
[SROA] `isVectorPromotionViable()`: avoid allowing overly large vectors
Otherwise, `compiler-rt/test/asan/TestCases/pr33372.cpp` fails with an assertion:
```
clang-16: /repositories/llvm-project/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:11988: void llvm::SelectionDAG::createOperands(llvm::SDNode *, ArrayRef<llvm::SDValue>): Assertion `SDNode::getMaxNumOperands() >= Vals.size() && "too many operands to fit into SDNode"' failed.
```
I'm not sure if this should be even more conservative,
or if we have a named constant for this in middle-end.
Ayke van Laethem [Mon, 7 Nov 2022 17:46:38 +0000 (18:46 +0100)]
[AVR][Clang] Implement __AVR_HAVE_*__ macros
These macros are defined in avr-gcc and are useful when working with
assembly. For example, startup code needs to copy the contents of .data
from flash to RAM, but should use elpm (instead of lpm) on devices with
more than 64kB flash. Without __AVR_HAVE_ELPM__, there is no way to know
whether the elpm instruction is supported.
This partially fixes https://github.com/llvm/llvm-project/issues/56157.
Differential Revision: https://reviews.llvm.org/D137572
Peiming Liu [Thu, 17 Nov 2022 01:46:15 +0000 (01:46 +0000)]
[mlir][sparse] make resolve cycle works with affine expressions.
Reviewed By: aartbik
Differential Revision: https://reviews.llvm.org/D138173
Peiming Liu [Thu, 17 Nov 2022 01:23:57 +0000 (01:23 +0000)]
[mlir][sparse] support affine expression on sparse dimensions (codegen implementation)
Reviewed By: aartbik
Differential Revision: https://reviews.llvm.org/D138172
Peiming Liu [Thu, 17 Nov 2022 01:20:11 +0000 (01:20 +0000)]
[mlir][sparse] support affine expression on sparse dimensions (analysis implementation)
Reviewed By: aartbik
Differential Revision: https://reviews.llvm.org/D138171
Zequan Wu [Tue, 22 Nov 2022 23:46:49 +0000 (15:46 -0800)]
Fix lto AddStream callsite in gold plugin.
Roman Lebedev [Tue, 22 Nov 2022 22:28:32 +0000 (01:28 +0300)]
[SROA] `isVectorPromotionViable()`: memory intrinsics operate on vectors of bytes
Now, there's a big caveat here - these bytes
are abstract bytes, not the i8 we have in LLVM,
so strictly speaking this is not exactly legal,
see e.g. https://github.com/AliveToolkit/alive2/issues/860
^ the "bytes" "could" have been a pointer,
and loading it as an integer inserts an implicit ptrtoint.
But at the same time,
InstCombine's `InstCombinerImpl::SimplifyAnyMemTransfer()`
would expand a memtransfer of 1/2/4/8 bytes
into integer-typed load+store,
so this isn't exactly a new problem.
Note that in memory, poison is byte-wise,
so we really can't widen elements,
but SROA seems to be inconsistent here.
Fixes #59116.
Roman Lebedev [Tue, 22 Nov 2022 22:25:49 +0000 (01:25 +0300)]
[NFC][AMDGPU] Rewrite two test files to avoid completely simplifying away after next patch
Roman Lebedev [Mon, 21 Nov 2022 22:05:49 +0000 (01:05 +0300)]
[NFC][SROA] Autogenerate check lines in some tests being affected by upcoming change
Roman Lebedev [Mon, 21 Nov 2022 22:01:25 +0000 (01:01 +0300)]
[NFC][SROA] Add some more tests for vector promotion
David Blaikie [Wed, 3 Aug 2022 17:13:42 +0000 (17:13 +0000)]
[libcxx] Add _LIBCPP_NODEBUG to std::conditional related typedfs
Looks like std::conditional wasn't included in
14d4869209cc8ff9a53aaa5a59d6409fbc1c5f5d
(& maybe other typedefs that should be using this technique either got
missed or have regressed since that change was made)
This was noticed by a 1.4% clang.dwp regression due to
f4fb72e6d4cee1097e6606e66232fe55e793cd86 introducing more instantiations
of std::conditional - this change reduces that regression to 0.6% at
least.
I'm also looking at other instantiations caused by that change that
might be able to be addressed - but a quick grep shows ~200 "type"
typedefs missing _LIBCPP_NODEBUG, so maybe a systematic application of
the typedef might be suitable?
Differential Revision: https://reviews.llvm.org/D131082
James Y Knight [Tue, 22 Nov 2022 18:35:43 +0000 (13:35 -0500)]
Refactor AsmPrinterHandler callbacks. NFCI.
The existing behaviors and callbacks were overlapping and had very
confusing semantics: beginBasicBlock/endBasicBlock were not always
called, beginFragment/endFragment seemed like they were meant to mean
the same thing, but were slightly different, etc. This resulted in
confusing semantics, virtual method overloads, and control flow.
Remove the above, and replace with new beginBasicBlockSection and
endBasicBlockSection callbacks. And document them.
These are always called before the first and after the last blocks in
a function, even when basic-block-sections are disabled.
Sami Tolvanen [Thu, 18 Aug 2022 23:53:09 +0000 (23:53 +0000)]
Add generic KCFI operand bundle lowering
The KCFI sanitizer emits "kcfi" operand bundles to indirect
call instructions, which the LLVM back-end lowers into an
architecture-specific type check with a known machine instruction
sequence. Currently, KCFI operand bundle lowering is supported only
on 64-bit X86 and AArch64 architectures.
As a lightweight forward-edge CFI implementation that doesn't
require LTO is also useful for non-Linux low-level targets on
other machine architectures, add a generic KCFI operand bundle
lowering pass that's only used when back-end lowering support is not
available and allows -fsanitize=kcfi to be enabled in Clang on all
architectures.
This relands commit
eb2a57ebc7aaad551af30462097a9e06c96db925 with
fixes.
Reviewed By: nickdesaulniers, MaskRay
Differential Revision: https://reviews.llvm.org/D135411
Zequan Wu [Tue, 22 Nov 2022 22:59:43 +0000 (14:59 -0800)]
Fix lto AddStreamFn in gold plugin.
Peiming Liu [Wed, 16 Nov 2022 23:18:16 +0000 (23:18 +0000)]
[mlir][sparse] support constant affine expression on dense dimension
Reviewed By: aartbik
Differential Revision: https://reviews.llvm.org/D138170
David Tenty [Fri, 18 Nov 2022 23:33:12 +0000 (18:33 -0500)]
[lit][AIX] Add LIBPATH to pass through env vars
AIX uses LIBPATH to specify the library search path in addition to
LD_LIBRARY_PATH, and a lot of users / tooling will use it
preferentially. In lit we currently pass through LD_LIBRARY_PATH but not
LIBPATH in the env on AIX, this patch corrects this inconsistency.
Differential Revision: https://reviews.llvm.org/D138510
Jeffrey Tan [Fri, 30 Sep 2022 18:38:02 +0000 (11:38 -0700)]
Add runToBinaryEntry option for lldb-vscode
This patch adds a new runToBinaryEntry option which sets a one-shot breakpoint
at program entry. This option is useful for synchronizing module loading with
dynamic loader to measure debugger startup performance: when program entry
one-short breakpoint hits most of the dependency modules should have been
loaded so this provides a good sample point for debugger startup time.
More explicitly for lldb-vscode, when this option is enabled, "Initialized" DAP
event is synchronously sent after most dependency modules are loaded.
Differential Revision: https://reviews.llvm.org/D135798
Zequan Wu [Tue, 22 Nov 2022 21:46:42 +0000 (13:46 -0800)]
Reland "[LTO][COFF] Use bitcode file names in lto native object file names."
This reverts commit
34108082947c964ae9bbfcd9808f2fd31c0d672f with fixes.
Zequan Wu [Tue, 22 Nov 2022 21:42:54 +0000 (13:42 -0800)]
Fix localCache in gold plugin.
Roman Lebedev [Tue, 22 Nov 2022 21:39:11 +0000 (00:39 +0300)]
Revert "Reland "[LTO][COFF] Use bitcode file names in lto native object file names.""
Breaks build of LLVMgold here:
```
/repositories/llvm-project/llvm/tools/gold/gold-plugin.cpp:1108:19: error: no matching function for call to 'localCache'
Cache = check(localCache("ThinLTO", "Thin", options::cache_dir, AddBuffer));
^~~~~~~~~~
/repositories/llvm-project/llvm/include/llvm/Support/Caching.h:72:21: note: candidate function not viable: no known conversion from '(lambda at /repositories/llvm-project/llvm/tools/gold/gold-plugin.cpp:1102:20)' to 'llvm::AddBufferFn' (aka 'function<void (unsigned int, const llvm::Twine &, std::unique_ptr<MemoryBuffer>)>') for 4th argument
Expected<FileCache> localCache(
^
/repositories/llvm-project/llvm/tools/gold/gold-plugin.cpp:1110:18: error: no viable conversion from '(lambda at /repositories/llvm-project/llvm/tools/gold/gold-plugin.cpp:1094:20)' to 'llvm::AddStreamFn' (aka 'function<Expected<std::unique_ptr<CachedFileStream>> (unsigned int, const llvm::Twine &)>')
check(Lto->run(AddStream, Cache));
^~~~~~~~~
/usr/bin/../lib/gcc/x86_64-linux-gnu/12/../../../../include/c++/12/bits/std_function.h:375:7: note: candidate constructor not viable: no known conversion from '(lambda at /repositories/llvm-project/llvm/tools/gold/gold-plugin.cpp:1094:20)' to 'std::nullptr_t' for 1st argument
function(nullptr_t) noexcept
^
/usr/bin/../lib/gcc/x86_64-linux-gnu/12/../../../../include/c++/12/bits/std_function.h:386:7: note: candidate constructor not viable: no known conversion from '(lambda at /repositories/llvm-project/llvm/tools/gold/gold-plugin.cpp:1094:20)' to 'const std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream>> (unsigned int, const llvm::Twine &)> &' for 1st argument
function(const function& __x)
^
/usr/bin/../lib/gcc/x86_64-linux-gnu/12/../../../../include/c++/12/bits/std_function.h:404:7: note: candidate constructor not viable: no known conversion from '(lambda at /repositories/llvm-project/llvm/tools/gold/gold-plugin.cpp:1094:20)' to 'std::function<llvm::Expected<std::unique_ptr<llvm::CachedFileStream>> (unsigned int, const llvm::Twine &)> &&' for 1st argument
function(function&& __x) noexcept
^
/usr/bin/../lib/gcc/x86_64-linux-gnu/12/../../../../include/c++/12/bits/std_function.h:435:2: note: candidate template ignored: requirement '_Callable<(lambda at /repositories/llvm-project/llvm/tools/gold/gold-plugin.cpp:1094:20) &, (lambda at /repositories/llvm-project/llvm/tools/gold/gold-plugin.cpp:1094:20), std::__invoke_result<(lambda at /repositories/llvm-project/llvm/tools/gold/gold-plugin.cpp:1094:20) &, unsigned int, const llvm::Twine &>>::value' was not satisfied [with _Functor = (lambda at /repositories/llvm-project/llvm/tools/gold/gold-plugin.cpp:1094:20) &]
function(_Functor&& __f)
^
/repositories/llvm-project/llvm/include/llvm/LTO/LTO.h:278:25: note: passing argument to parameter 'AddStream' here
Error run(AddStreamFn AddStream, FileCache Cache = nullptr);
^
```
This reverts commit
387620aa8cea33174b6c1fb80c1af713fee732ac.
Fangrui Song [Tue, 22 Nov 2022 21:33:34 +0000 (13:33 -0800)]
[libc++] Replace __ppc64__ with __powerpc64__ and fix is_iec559 for non-ibm128
The lowercase `__ppc64__` is not defined by non-darwin powerpc64 GCC, therefore
it lures users to write code which is not portable to GCC. Migrate to
`__powerpc64__` in preparation for undefining `__ppc64__`. `__powerpc64__` is
much more common than `__PPC64__`.
Update alignment_of.pass.cpp to use 1 unconditionally:
on powerpc-unknown-linux-gnu `alignof(bool) = _Alignof(bool) = __alignof(bool) = 1`.
The value 4 might be derived from an ancient Clang.
Change is_iec559 to true when long double uses uses IEEE 754 quadruple or double
precision (i.e. not ibm128).
Reviewed By: #libc, thesamesam, ldionne
Differential Revision: https://reviews.llvm.org/D137513
Louis Dionne [Tue, 22 Nov 2022 21:26:43 +0000 (16:26 -0500)]
[libc++][NFC] Add missing #ifdef for TEST_HAS_NO_WIDE_CHARACTERS
Nancy Wang [Tue, 22 Nov 2022 19:31:51 +0000 (14:31 -0500)]
XFAIL hidden-duplicates.m for AIX and zOS
as this is failing on the build bots:
https://lab.llvm.org/buildbot/#/builders/214/builds/4442/steps/6/logs/FAIL__Clang__hidden-duplicates_m
and is being investigate under https://reviews.llvm.org/D130327.
Roman Lebedev [Tue, 22 Nov 2022 21:04:06 +0000 (00:04 +0300)]
[SROA] `isVectorPromotionViable()`: integer-ify non-pointer non-common types
This rectifies a FIXME that dates all the way back
to 2014 about not doing so due to the backend issues.
Presumably sufficient amount of time has passes
and all the known issues have been addressed,
or at least we will find out of there are some left...
Roman Lebedev [Tue, 22 Nov 2022 16:54:39 +0000 (19:54 +0300)]
[SROA] `isVectorPromotionViable()`: pointer-ness is sticky
As it has been established previously by precedent,
if we see a pointer type, then that is the type we must use.
Essentially, we don't want to introduce `inttoptr`'s.
Jay Foad [Tue, 22 Nov 2022 18:40:22 +0000 (18:40 +0000)]
[AMDGPU] More cleanup after D117544. NFC.
Fangrui Song [Tue, 22 Nov 2022 20:59:45 +0000 (12:59 -0800)]
[ELF] -r: don't define _TLS_MODULE_BASE_
_TLS_MODULE_BASE_ is supposed to be defined by the final link. Defining it in a
relocatable link may render the final link value incorrect.
GNU ld i386/x86-64 have the same issue: https://sourceware.org/bugzilla/show_bug.cgi?id=29820
Yingchi Long [Fri, 11 Nov 2022 14:45:08 +0000 (22:45 +0800)]
[Sema] check InitListExpr format strings like {"foo"}
Adds InitListExpr case in format string checks.
e.g.
int sprintf(char *__restrict, const char * __restrict, ...);
int foo()
{
char data[100];
constexpr const char* fmt2{"%d"}; // no-warning
sprintf(data, fmt2, 123);
}
Fixes: https://github.com/llvm/llvm-project/issues/58900
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D137839
Fangrui Song [Tue, 22 Nov 2022 20:37:51 +0000 (12:37 -0800)]
[ELF] -r: don't define __global_pointer$
This symbol is supposed to be defined by the final executable link. The new
behavor matches GNU ld.
Davide Italiano [Tue, 22 Nov 2022 20:29:44 +0000 (12:29 -0800)]
[X86] Don't lower f16->f80 fpext to libcall on darwin.
We don't provide __extendhfxf2, and only have the soft-float
__extendhfsf2 in compiler-rt. This only changed recently with
655ba9c8a1d2, so this patch reverts back to the previous behavior.
However, the f80->f16 fptrunc is not easily implementable without
the compiler-rt __truncxfhf2, but that has always been true, and
isn't an immediate regression.
Patch by Ahmed Bougacha.
rdar://
102194995
Michael Maitland [Tue, 22 Nov 2022 00:02:47 +0000 (16:02 -0800)]
[llvm-mca] Fix class dominance warnings for parseCodeRegions
Fixes issue [59091](https://github.com/llvm/llvm-project/issues/59091).
`CodeRegionGenerator::parseCodeRegions` is implemented by `AsmCodeRegionGenerator`.
If it were to be implemented in `AnalysisRegionGenerator` or `InstrumentRegionGenerator`,
then `parseCodeRegions` from an `AsmAnalysisRegionGenerator` or `AsmInstrumentRegionGenerator`
object would be ambiguous. To solve this, `AsmAnalysisRegionGenerator` and
`AsmInstrumentRegionGenerator` qualify their call to `AsmCodeRegionGenerator::parseCodeRegions`.
Differential Revision: https://reviews.llvm.org/D138462
Shoaib Meenai [Mon, 21 Nov 2022 23:59:42 +0000 (15:59 -0800)]
[libcxxabi] Always use thread_local for cxa_exception_storage
This was previously guarded by HAS_THREAD_LOCAL, which was never set by
CMake and had to be specified manually. Android has been setting this to
solve https://github.com/android/ndk/issues/1200 [1], but every compiler
and platform libc++abi supports should have thread_local by now, so we
can just get rid of the fallback implementation and simplify things
significantly (including removing the now unused fallback calloc).
[1] https://android-review.googlesource.com/c/toolchain/llvm-project/+/1285596
Reviewed By: #libc_abi, MaskRay, ldionne
Differential Revision: https://reviews.llvm.org/D138461
Ikhlas Ajbar [Tue, 22 Nov 2022 20:19:36 +0000 (12:19 -0800)]
[Hexagon] Add missing patterns for select
Fixes https://github.com/llvm/llvm-project/issues/59077.
Benjamin Kramer [Tue, 22 Nov 2022 20:12:42 +0000 (21:12 +0100)]
[VectorCombine] Don't touch instruction after foldSingleElementStore, it might be deleted
Use after free found by asan.
Mitch Phillips [Tue, 22 Nov 2022 18:27:46 +0000 (10:27 -0800)]
Make -fsanitize=scudo use scudo_standalone. Delete check-scudo.
Leaves the implementation and tests files in-place for right now, but
deletes the ability to build the old sanitizer-common based scudo. This
has been on life-support for a long time, and the newer scudo_standalone
is much better supported and maintained.
Also patches up some GWP-ASan wording, primarily related to the fact
that -fsanitize=scudo now is scudo_standalone, and therefore the way to
reference the GWP-ASan options through the environment variable has
changed.
Future follow-up patches will delete the original scudo, and migrate all
its tests over to be part of the scudo_standalone test suite.
Reviewed By: vitalybuka
Differential Revision: https://reviews.llvm.org/D138157
Stefan Gränitz [Tue, 22 Nov 2022 19:51:09 +0000 (20:51 +0100)]
Revert "[CGObjC] Add run line for release mode in test arc-exceptions-seh.mm (NFC)"
This reverts commit
01023bfcd33f922ed8c934ce563e54abe8bfe246. The extended test now triggers undefined behavior:
```
/b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/ObjCARC/ObjCARCOpts.cpp:577:41: runtime error: load of value 180, which is not a valid value for type 'bool'
#0 0xaaaae3333a30 in hasCFGChanged /b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/ObjCARC/ObjCARCOpts.cpp:577:41
#1 0xaaaae3333a30 in llvm::ObjCARCOptPass::run(llvm::Function&, llvm::AnalysisManager<llvm::Function>&) /b/sanitizer-aarch64-linux-bootstrap-ubsan/build/llvm-project/llvm/lib/Transforms/ObjCARC/ObjCARCOpts.cpp:2494:26
...
```
Fangrui Song [Tue, 22 Nov 2022 19:38:57 +0000 (11:38 -0800)]
[ELF] addRelIpltSymbols: make it explicit some passes are for non-relocatable links. NFC
and prepare for __global_pointer$ and _TLS_MODULE_BASE_ fix.
Rong Xu [Tue, 22 Nov 2022 19:22:38 +0000 (11:22 -0800)]
[CHR] Add a threshold for the code duplication
ControlHeightReduction (CHR) clones the code region to reduce the
branches in the hot code path. The number of clones is linear to the
depth of the region.
Currently it does not have control over the code size increase. We are
seeing one ~9000 BB functions get expanded to ~250000 BBs, an 25x
increase. This creates a big compile time issue for the downstream
optimizations.
This patch adds a cap for number of clones for one region.
Differential Revision: https://reviews.llvm.org/D138333
Nikolas Klauser [Fri, 4 Nov 2022 19:08:56 +0000 (20:08 +0100)]
[libc++][math.h][NFC] Refactor enable_ifs
Reviewed By: ldionne, Mordante, #libc
Spies: EricWF, libcxx-commits
Differential Revision: https://reviews.llvm.org/D137501