[BOLT][DWARF] Refactor helper functions that update DW_AT_comp_dir/DW_AT_dwo_name (#91237)
We need to update DW_AT_comp_dir/DW_AT_dwo_name TU in the
.debug_info.dwo section so that the path is correct. Refactored helper
functions to make it easier for next step.
Try to use non-volatile registers for `preserve_none` parameters (#88333)
This uses non-volatile registers for the first four (six on Windows)
registers used for `preserve_none` argument passing. This allows these
registers to stay "pinned", even if the body of the `preserve_none`
function contains calls to other "normal" functions.
Example:
```c
void boring(void);
__attribute__((preserve_none)) void (continuation)(void *, void *, void *, void *);
__attribute__((preserve_none)) void entry(void *a, void *b, void *c, void *d)
{
boring();
__attribute__((musttail)) return continuation(a, b, c, d);
}
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[MLIR][EmitC] Don't translate expressions inline if user is `emitc.subscript` (#91087)
This change updates the logic that determines whether an `emitc.expression`
result is translated into a dedicated variable assignment. Due to how
the translation of `emitc.subscript` currently works, a previously
inline-able `emitc.expression` would produce incorrect C++ if its single user
was a `emitc.subscript` operation.
[AArch64][GlobalISel] Common some shuffle mask functions.
This removes the GISel versions of isREVMask, isTRNMask, isUZPMask and
isZipMask. They are combined with the existing versions from SDAG into
AArch64PerfectShuffle.h.
[X86] Add slow div64 tuning flag to Nehalem target (#91129)
This appears to have been missed because later cpus don't inherit from Nehalem tuning much.
Noticed while cleaning up for #90985
[SLP]Use last pointer instead of first for reversed strided stores.
Need to use the last address of the vectorized stores for the strided
stores, not the first one, to correctly store the data.
[NFC][Driver] Clean up RenderFloatingPointOptions() (#91017)
This change refactors RenderFloatingPointOptions() to eliminate some
excessively complicated logic and a redundant switch statement. The
logic being simplified is an artifact of the original -ffp-model
implementation, and over time it has become unnecessary.
The handling of diagnostics related to the -ffp-contract option is
still a bit convoluted after this change. I will address that in a
subsequent patch because I think it will make sense to make some minor
changes to the driver behavior when that is cleaned up. The current
patch should not make any change to observable behavior of the driver.
[lld-macho] Add support for category names in ConcatInputSection's (#90850)
In some cases we see strings from categories being part of "data"
sections (Ex:`__objc_const`), not part of of sections marked as
`cstring_literals`. Since lld treats these sections differently we need
to explicitly implement support for reading strings from the
non-`cstring_literals` sections.
Adding a test that previously would result in an assert.
[lld-macho] Category Merger: add support for addrsig references (#90903)
When generating categories, clang sometimes will generate references in
the `.addrsig` section to the various category data items. Since we may
erase such items after merging them, we also need to remove them from
the `.addrsig` section - otherwise this will cause runtime asserts with
the `.addrsig` section trying to access invalid data.
Implementation wise, we use a hashset to keep track of all erased
`InputSection`'s and then go through all `.addrsig` sections and remove
references to any erased `InputSection`.
[RISCV] Move RISCVDeadRegisterDefinitions to post vector regalloc (#90636)
Currently RISCVDeadRegisterDefinitions runs after vsetvli insertion, but
in #70549 vsetvli insertion runs after vector regalloc and as a result
we no longer convert some vsetvli a0, a0s to vsetvli x0, a0. This patch
moves it to after vector regalloc, but before scalar regalloc so we
still get the benefits of reducing register pressure.
[OpenACC] Implement 'deviceptr' and 'attach' sema for compute constructs
These two are very similar to the other 'var-list' variants, except they
require that the type of the variable be a pointer. This patch
implements that restriction.
[flang][OpenMP] Move privatizations out of sections (#88191)
Besides duplicating code, privatizing variables in every section
causes problems when synchronization barriers are used. This
happens because each section is executed by a given thread, which
will cause the program to hang if not all running threads execute
the barrier operation.
Fixes https://github.com/llvm/llvm-project/issues/72824
[RISCV] Check dead flag on VL def op in RISCVCoalesceVSETVLI. NFC (#91168)
Because LiveVariables has been run, we no longer need to lookup the
users in MachineRegisterInfo anymore and can instead just check for the
dead flag.
[SLP]Fix PR91025: correctly handle smin/smax of signed operands.
Need to check that the signed operand has an extra sign bit to be sure
that we do not skip signedness, when trying to minimize bitwidth for
smin/smax intrinsics.
[AggressiveInstCombine] Fix strncmp inlining (#91204)
Fix the issue that `char` constants are converted to `uint64_t` in the
wrong way when doing the inlining.
[lldb-dap] Don't fail when SBProcess::GetMemoryRegionInfo returns error. (#87649)
`SBProcess::GetMemoryRegionInfo` uses `qMemoryRegionInfo` packet to get
memory region info, but this is not supported in gdb-server and causing
downstream lldb test failures. This change ignores the the error from
`SBProcess::GetMemoryRegionInfo` .
Reported by @tedwoodward @jerinphilip.
Revert "Reapply "Use an abbrev to reduce size of VALUE_GUID records in ThinLTO summaries" (#90610)" (#91194)
Reverts llvm/llvm-project#90692
Breaking PPC buildbots. The bots are not meant to test LLD, but are
running a test that is using an old version of LLD without the change
(so is incompatible). Revert until a fix is found.
[libc][math] fix loose except check in `{EXPECT,ASSERT}_FP_EXCEPTION` macros (#88816)
Adds more FP test macros for the upcoming test adds for #61092 and the
issues opened from it: #88768, #88769, #88770, #88771, #88772.
Fix bug in `{EXPECT,ASSERT}_FP_EXCEPTION`. `EXPECT_FP_EXCEPTION(0)`
seems to be used to test that an exception did not happen, but it always
does `EXPECT_GE(... & 0, 0)` which never fails.
Update and refactor tests that break after the above bug fix. An
interesting way things broke after the above change is that
`ForceRoundingMode` and `quick_get_round()` were raising the inexact
exception, breaking a lot of the `atan*` tests.
The changes for all files other than `FPMatcher.h` and
`libc/test/src/math/smoke/RoundToIntegerTest.h` should have the same
semantics as before. For `RoundToIntegerTest.h`, lines 56-58 before the
changes do not always hold since this test is used for functions with
different exception and errno behavior like `lrint` and `lround`. I've
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[clang][dataflow] Don't propagate result objects in unevaluated contexts (reland #90438) (#91172)
This relands #90348 with a fix for a [buildbot
failure](https://lab.llvm.org/buildbot/#/builders/216/builds/38446)
caused by the test being run with `-fno-rtti`.
