[Reland] [ClangScanDeps] Do not emit warning for P1689 format (#186966) (#188401)
Close https://github.com/llvm/llvm-project/issues/185394
This is only for P1689 format as ClangScanDeps/optimize-vfs-pch.m will
check for warning message. I'll leave this to people who want to change
that.
[asan] Convert __SANITIZER_DISABLE_CONTAINER_OVERFLOW__ tests to C (#188406)
As-is tests do not pass on android with older C++ headers.
There is nothing C++ specific in tests.
Followup to #181721.
In the namei callback for __pledge_open() invert the logic of checking
pledge/namei modes and then checking for the path. Now, first
identify the path with array bsearch then check the pledge/namei modes.
Since this is __pledge_open(), if the path is not known, terminate with
an EACCES abort. If the path is known but the pledge/namei modes don't
suggest an unveil bypass, allow the code to fallthrough to the rpath/wpath
checks, and then back into namei for unveil validation.
ok dgl
[Clang] define memory scopes as a builtin enum
Clang currently represents memory scopes as pre-defined preprocessor macros that
evaluate to integers. But so far, there are three sets of conflicting scopes:
"common" clang scopes, HIP scopes and OpenCL scopes. These sets use the same
integers in different orders, making it impossible to validate their use. A
better approach is to represent these scopes as enum types, so that the integer
values become less significant. Sema can now validate the scope argument by its
type instead.
Both C and C++ define an enum for memory_order, but there is no standard enum
for memory_scope. This change introduces a Clang-specific enum "memory_scope".
The pre-defined macros are now mapped to this enum. Later changes can add
similar enums for other languages.
enum __memory_scope {
__memory_scope_system,
__memory_scope_device,
__memory_scope_workgroup,
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[ELF] Guard relocation section handling behind copyRelocs in addOrphanSections. NFC (#188409)
In addOrphanSections, getRelocatedSection() only returns non-null for -r
or --emit-relocs links. Guard code blocks with `copyRelocs` to skip
unnecessary dyn_cast + getRelocatedSection calls per section in the
common case. Hoist copyRelocs and relocatable to local variables so the
compiler does not reload them through ctx on every loop iteration.
"Assign sections" decreases by 1ms.
[Flang][OpenMP] Remove dead restoreIP in OpenMP taskloop lowering (#187222)
This fixes an intermittent crash in `OpenMP` taskloop lowering.
In `OMPIRBuilder::createTaskloop`, the `restoreIP` in `PostOutlineCB`
was immediately overwritten by the following
`Builder.SetInsertPoint(StaleCI)` with no instructions created in
between, so it was effectively dead. This patch removes that dead
restore, which is the smallest change and preserves the intended IR
placement.
Adds a regression test that compiles a taskloop to LLVM IR and verifies
the bounds casts and __kmpc_taskloop call are present.
[flang-rt] Fix macOS build: define _DARWIN_C_SOURCE for mmap flags (#186142)
On Darwin, `sys/mman.h` hides `MAP_JIT` and `MAP_ANON(YMOUS)` when
`_POSIX_C_SOURCE` is defined unless `_DARWIN_C_SOURCE` is also defined.
`trampoline.cpp` uses those flags, so this change defines
`_DARWIN_C_SOURCE` before including `<sys/mman.h>` in this file.
Fixes build failure reported in #183108.
Co-authored-by: Sairudra More <moresair at pe31.hpc.amslabs.hpecorp.net>
