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| git_commit |
commit 353d6a98bfdceabd1f08801baf90699148a6c8c3 Author: Yuxuan Chen <ych@fb.com> Date: Mon Sep 8 14:17:59 2025 -0700 [libc++] Conditionally declare `lgamma_r` as noexcept (#156547) An older PR https://github.com/llvm/llvm-project/pull/102036 suggested that LLVM libc declares `lgamma_r` as noexcept and is incompatible with this redeclaration. However, I recently discovered that glibc also declares the math functions to be noexcept under C++ mode. This line usually don't cause issues because both the glibc and this file are included as "system headers". According to [this godbolt](https://godbolt.org/z/o7Wd9PP58), both GCC and clang ignore the different exception specification between multiple declarations if they are in system headers. However, this seems not the case for NVCC/EDG, so a fix for this redeclaration is still desirable. This patch proposes that we should declare the function as noexcept under known libc integrations to keep the declared function consistent. |
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ldionne-old-macbook-results test results
| Run | Order | Start Time | Duration |
|---|---|---|---|
| Current | 551740 | 2025-12-16T16:40:01 | 0:00:00 |
| Previous | 551647 | 2025-12-16T16:40:01 | 0:00:00 |
| Baseline | 485288 | 2025-12-16T16:40:01 | 0:00:00 |
Tests Summary
| Status Group | # | # (B) |
|---|---|---|
| Performance Regressions | 5 | 0 |
| Performance Improvements | 1 | 0 |
| Added Tests | 0 | 15 |
| Unchanged Tests | 69 | 60 |
| Total Tests | 75 |
| Performance Regressions - execution_time | Δ | Previous | Current | σ | Δ (B) | σ (B) |
|---|---|---|---|---|---|---|
| 710_omnetpp_r | 3.80% | 8.439 | 8.760 | - | 0.00% | - |
| 707_ntest_r | 2.75% | 17.923 | 18.416 | - | 0.00% | - |
| 723_llvm_r | 2.39% | 11.542 | 11.818 | - | 0.00% | - |
| 753_ns3_r | 1.71% | 10.334 | 10.511 | - | 0.00% | - |
| 706_stockfish_r | 1.37% | 21.985 | 22.287 | - | 0.00% | - |
| Performance Improvements - execution_time | Δ | Previous | Current | σ | Δ (B) | σ (B) |
|---|---|---|---|---|---|---|
| 748_flightdm_r | -1.17% | 8.913 | 8.809 | - | 0.00% | - |
| Added Tests - execution_time |
|---|
| 706_stockfish_r |
| 707_ntest_r |
| 709_cactus_r |
| 710_omnetpp_r |
| 721_gcc_r |
| 723_llvm_r |
| 727_cppcheck_r |
| 729_abc_r |
| 731_astcenc_r |
| 736_ocio_r |
| 737_gmsh_r |
| 748_flightdm_r |
| 750_sealcrypto_r |
| 753_ns3_r |
| 766_femflow_r |
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