[Driver] Re-enable -fobjc-constant-literals by default (#204208)
This reverts 4d154f6ea5eb ([Driver] Disable -fobjc-constant-literals by
default (#195000)), which was a temporary measure to unblock a project
that the original constant-literal change (#185130) broke.
For background on the feature and the discussion that led to disabling
and then re-enabling it, see
https://github.com/llvm/llvm-project/pull/185130.
rdar://179823193
[SSAF][WPA] Add a lit test for the WPA improvement of #198889 (#204018)
This commit adds a lit test, which is an example of the issue solved by
#198889 and was discovered independently when applying the analysis to a
real project.
rdar://179754164
emulators/mame: fix build on armv7
The bundled copy of the LZMA toolkit has been updated to a fairly
recent version. As a result, while our patches still apply, they are
largely obsolete or even defective.
Remove the obsolete patches and add a missing compile option to fix the
build on armv7 (-march=armv8-a enables AES intrinsics required by LZMA).
Approved by: portmgr (build fix blanket)
MFH: 2026Q2
[RISC-V][MC] Improve the diagnostic for invalid compressed register number
Instead of a generic `invalid operand for instruction`, print
`register must be a GPR from x8 to x15` instead.
Pull Request: https://github.com/llvm/llvm-project/pull/204237
[BinaryFormat] Fix UBSan negative-shift in identify_magic Mach-O path (#204122)
`identify_magic()` read the Mach-O filetype field at offset 12 by
left-shifting four bytes of the input StringRef:
```
type = Magic[12] << 24 | Magic[13] << 12 | Magic[14] << 8 | Magic[15];
```
`StringRef::operator[]` returns a `signed char`. When a header byte has
its
high bit set (e.g. 0xFA == -6 after promotion to int), the expression
"-6 << 24" is undefined behavior; even positive bytes like 0xFF promote
to a value whose "<< 24" overflows a signed int. UBSan trapped this on a
crafted input found by lldb-target-fuzzer:
```
Magic.cpp:177:26: runtime error: left shift of negative value -6
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior
libFuzzer: deadly signal
```
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AMDGPU: Teach disassembler to produce target id directives (#203979)
Inspect the binary's e_flags to reproduce the .amdgcn_target directive.
This is a step towards round-trip disassembly without depending
on command line state specifying the subtarget. I wasn't sure
where to put the emission to ensure it is always emitted. I
also do not know why it's OK to just write to outs(), but that's
what the other directives here were doing.
Co-Authored-By: Claude Opus 4.6 <noreply at anthropic.com>
[lldb][test] Skip watchpoint and expression tests on WebAssembly (#204235)
WebAssembly has no watchpoint support (Process/wasm reports no
watchpoints; the stop reason comes back as a plain signal) and cannot
JIT or interpret expressions (ProcessWasm sets CanJIT to false). Teach
the existing per-platform category checks about wasm so the whole
"watchpoint" and "expression" categories are skipped, rather than
decorating each test individually.
api2: fix FTP default import and skip boot attach/replace/detach test
test_200_ftp: FTPModel moved to ftp.config submodule when the plugin
was converted to the typesafe pattern; update the generated script's
import accordingly.
test_boot_attach_replace_detach: skip until IT can provide larger
disks; current disks lack space for the required boot partitions.
