[AArch64] Rename memory hints to avoid clash with arm_acle.h macros (#226432)
Renames the hints in AArch64MemoryHints.h, as HINT_STSHH_KEEP and
HINT_STSHH_STRM are already defined in arm_acle.h.
[RISCV] Replace uses of RegState::Define. NFC (#226569)
Either pass the destination register to the BuildMI call or use addDef
if there are multiple defs or other flags are set.
[DirectX] Preserve all shader-stage bits during DXIL op lowering (#225874)
The vertex-stage bit is above bit 15 and was lost when the mask was
narrowed to uint16_t. This would cause an incorrect lowering error:
https://godbolt.org/z/rEMj8ssK9.
Corrected by keeping it as a 32 bit value.
Assisted by: ChatGPT 6 Astra
[CIR] Reuse the existing fast-math flags attribute
#224899 already defined cir::FastMathFlags. Drop the duplicate enum and
let FP operation builders read the active fenv and fast-math flags from
the CIR builder.
Co-authored-by: Cursor <cursoragent at cursor.com>
[CIR] Update the fastmath contract lowering test
cir-to-llvm now requires a module triple, and the LLVM dialect prints
fastmath flags as fastmath<contract> rather than an attribute dictionary.
Co-authored-by: Cursor <cursoragent at cursor.com>
[CIR] Record -ffp-contract=fast as a per-op contract flag
Classic CodeGen stamps contract on floating-point instructions so a later
Standard-fusion backend can still form an FMA. CIR only fused within a
statement via cir.fmuladd, which dropped FFMA on the CUDA device default.
Co-authored-by: Cursor <cursoragent at cursor.com>
[libc] Avoid system fenv.h in FEnvImpl.h when LIBC_MATH_HAS_NO_EXCEPT is set (#224384)
The warning being added under #199009 triggers errors in subprojects
(e.g., flang) using libc headers that gate the use of `#pragma STDC
FENV_ACCESS ON` on the internal libc
`LIBC_COMPILER_HAS_STDC_FENV_ACCESS` flag, when building under
`-Wfenv-access -Werror`. As the idea is for these subprojects to not
access the libc FP environment (see
https://github.com/llvm/llvm-project/pull/199009#issuecomment-5299119396),
gating the use of system fenv.h functions on the
`LIBC_MATH_HAS_NO_EXCEPT` flag avoids having to specify the
`LIBC_COMPILER_HAS_STDC_FENV_ACCESS` flag when building them.
The three line removals are a clean-up related to
https://github.com/llvm/llvm-project/pull/200268. These uses are
redundant as the called functions already use the pragma when
appropriate.
[WebAssembly] Emit i64 GOT import globals on wasm64 (#226326)
WasmObjectWriter hardcodes the synthetic GOT import globals
(GOT.mem/GOT.func) to i32, but on wasm64 they hold 64-bit addresses, so
the object is type-invalid against the i64 global.get that consumes
them. wasm-ld already emits i64 GOT imports on wasm64, so this aligns
the object writer with the linker: the import type is gated on
is64Bit(), and the reloc-pic64 expectations are updated. The wasm32
checks are unchanged.
[Mips] Enable generic bitfield extract preparation (#226491)
Enable CodeGenPrepare's shift sinking when the subtarget supports
bitfield extract instructions. This exposes shift-and-mask patterns
across basic blocks to the existing MIPS extract combine.
Use hasExtractInsert() to keep this disabled for pre-r2 targets and
MIPS16. Add a minimal cross-block regression case to extins.ll.
[libc++] Add a benchmark machine for libstdc++ (#226346)
Add a machine that benchmarks the libstdc++ shipped with GCC 16 on macOS
instead of a libc++ build. To enable that, generalize the scripts and
workflows to make more aspects of machines.json optional (e.g. support
machines that don't need to build libc++).
[LV] Add tests for zero branch weights and execution frequencies (NFC). (#226553)
Add missing test coverage for VPlan-based execution frequency
computation:
* blocks entered via an edge with zero branch weight,
* blocks whose sibling edge has zero weight,
* nested branches whose skipping edges have zero weight,
* a block executing on all paths through the loop after a switch whose
probabilities do not add up to 1,
* frequencies below the smallest representable non-zero one
* all-zero weights making a join's frequency unknown
* estimated frequencies propagating through a branch with weights.
Also updates
llvm/test/Transforms/LoopVectorize/VPlan/execution-frequencies-match-bfi.ll
to check frequencies directly after the frequencies have been recorded.
[SandboxVec][LoadStoreVec][NFC] Tighten bundle element types (#226348)
Use Instruction*/Constant* for LoadStoreVec APIs where that is what
callers hold, and template getCombinedVectorTypeFor so BndlRef is not
forced through a non-covariant Value* conversion.
Co-authored-by: Cursor <cursoragent at cursor.com>
[clang][Modules] Respect case sensitivity when hashing implicit module map path (#226339)
Before this patch, the implicit module hash normalized the module map
path, but explicit modules always respected the case in paths. This
worked by depending on FileEntry caching and/or relocation checking to
resolve correctly. This behavior was both subtle and difficult to
understand. Instead, respect the casing in paths for hashing to match
explicitly built modules so they can never diverge.
This patch also updates `modules-context-hash-module-map-path.c` to
match a downstream version that already tested for the case where vfs
overlay entries differ by case but point to the same file.
`modules-context-hash-case-sensitive-vfs-paths.c` is the same but points
to different underlying files.
