Build failure on nixos with g++ 14.2.1 w/ -march=znver4 & -mtune=znver4

[PartyWumpus]

As title says, I'm using arch & tune znver4, via a simple nix shell that looks like

let
  pkgs = import <nixpkgs> {
    localSystem = {
      gcc.arch = "znver4";
      gcc.tune = "znver4";
      system = "x86_64-linux";
    };
  };
in
  pkgs.simde

The error looks like:

The Meson build system
Version: 1.7.0
Source dir: /build/source
Build dir: /build/source/build
Build type: native build
Project name: SIMDe
Project version: 0.8.2
C compiler for the host machine: gcc (gcc 14.2.1 "gcc (GCC) 14.2.1 20241116")
C linker for the host machine: gcc ld.bfd 2.43.1
C++ compiler for the host machine: g++ (gcc 14.2.1 "g++ (GCC) 14.2.1 20241116")
C++ linker for the host machine: g++ ld.bfd 2.43.1
Host machine cpu family: x86_64
Host machine cpu: x86_64
Library m found: YES
Compiler for C supports arguments -fopenmp-simd: YES 
Compiler for C++ supports arguments -fopenmp-simd: YES 
Compiler for C supports arguments -Wpsabi: YES 
Compiler for C++ supports arguments -Wpsabi: YES 
Library m found: YES
Did not find pkg-config by name 'pkg-config'
Found pkg-config: NO
Build targets in project: 2002

...

[380/4004] Compiling C++ object test/x86/avx512/shuffle-native-cpp.p/meson-generated_>
FAILED: test/x86/avx512/shuffle-native-cpp.p/meson-generated_.._shuffle.cpp.o 
g++ -Itest/x86/avx512/shuffle-native-cpp.p -Itest/x86/avx512 -I../test/x86/avx512 -I.>
In file included from test/x86/avx512/shuffle.cpp:33:
test/x86/avx512/shuffle.cpp: In function 'int test_simde_mm512_shuffle_epi32()':
../test/x86/avx512/../../../simde/simde-constify.h:71:47: error: invalid conversion f>
   71 |       case 0: result = func_name(__VA_ARGS__, 0); break; \
../simde/x86/avx512/shuffle.h:100:73: note: in definition of macro 'simde_mm512_shuff>
  100 | #  define simde_mm512_shuffle_epi32(a, imm8) _mm512_shuffle_epi32((a), (imm8))
      |                                                                         ^~~~
test/x86/avx512/shuffle.cpp:488:5: note: in expansion of macro 'SIMDE_CONSTIFY_4_'
  488 |     SIMDE_CONSTIFY_4_(simde_mm512_shuffle_epi32, r, (HEDLEY_UNREACHABLE(), a)>
      |     ^~~~~~~~~~~~~~~~~
In file included from /nix/store/shhh1vdqy054y6nwqrjp3ic0nh82kpsd-gcc-14-20241116/lib>
                 from ../test/x86/avx512/../../../simde/simde-features.h:309,
                 from ../test/x86/avx512/../../../simde/simde-common.h:45,
                 from ../test/x86/avx512/../../test.h:5,
                 from ../test/x86/avx512/../test-x86.h:4,
                 from ../test/x86/avx512/test-avx512.h:4,
                 from test/x86/avx512/shuffle.cpp:30:
/nix/store/shhh1vdqy054y6nwqrjp3ic0nh82kpsd-gcc-14-20241116/lib/gcc/x86_64-unknown-li>
 7609 | _mm512_shuffle_epi32 (__m512i __A, _MM_PERM_ENUM __mask)
      |                                    ~~~~~~~~~~~~~~^~~~~~
../test/x86/avx512/../../../simde/simde-constify.h:72:47: error: invalid conversion f>
   72 |       case 1: result = func_name(__VA_ARGS__, 1); break; \
../simde/x86/avx512/shuffle.h:100:73: note: in definition of macro 'simde_mm512_shuff>
  100 | #  define simde_mm512_shuffle_epi32(a, imm8) _mm512_shuffle_epi32((a), (imm8))
      |                                                                         ^~~~
test/x86/avx512/shuffle.cpp:488:5: note: in expansion of macro 'SIMDE_CONSTIFY_4_'
  488 |     SIMDE_CONSTIFY_4_(simde_mm512_shuffle_epi32, r, (HEDLEY_UNREACHABLE(), a)>
      |     ^~~~~~~~~~~~~~~~~
/nix/store/shhh1vdqy054y6nwqrjp3ic0nh82kpsd-gcc-14-20241116/lib/gcc/x86_64-unknown-li>
 7609 | _mm512_shuffle_epi32 (__m512i __A, _MM_PERM_ENUM __mask)
      |                                    ~~~~~~~~~~~~~~^~~~~~
../test/x86/avx512/../../../simde/simde-constify.h:73:47: error: invalid conversion f>
   73 |       case 2: result = func_name(__VA_ARGS__, 2); break; \
../simde/x86/avx512/shuffle.h:100:73: note: in definition of macro 'simde_mm512_shuff>
  100 | #  define simde_mm512_shuffle_epi32(a, imm8) _mm512_shuffle_epi32((a), (imm8))
      |                                                                         ^~~~
test/x86/avx512/shuffle.cpp:488:5: note: in expansion of macro 'SIMDE_CONSTIFY_4_'
  488 |     SIMDE_CONSTIFY_4_(simde_mm512_shuffle_epi32, r, (HEDLEY_UNREACHABLE(), a)>
      |     ^~~~~~~~~~~~~~~~~
/nix/store/shhh1vdqy054y6nwqrjp3ic0nh82kpsd-gcc-14-20241116/lib/gcc/x86_64-unknown-li>
 7609 | _mm512_shuffle_epi32 (__m512i __A, _MM_PERM_ENUM __mask)
      |                                    ~~~~~~~~~~~~~~^~~~~~
../test/x86/avx512/../../../simde/simde-constify.h:74:47: error: invalid conversion f>
   74 |       case 3: result = func_name(__VA_ARGS__, 3); break; \
../simde/x86/avx512/shuffle.h:100:73: note: in definition of macro 'simde_mm512_shuff>
  100 | #  define simde_mm512_shuffle_epi32(a, imm8) _mm512_shuffle_epi32((a), (imm8))
      |                                                                         ^~~~
test/x86/avx512/shuffle.cpp:488:5: note: in expansion of macro 'SIMDE_CONSTIFY_4_'
  488 |     SIMDE_CONSTIFY_4_(simde_mm512_shuffle_epi32, r, (HEDLEY_UNREACHABLE(), a)>
      |     ^~~~~~~~~~~~~~~~~
/nix/store/shhh1vdqy054y6nwqrjp3ic0nh82kpsd-gcc-14-20241116/lib/gcc/x86_64-unknown-li>
 7609 | _mm512_shuffle_epi32 (__m512i __A, _MM_PERM_ENUM __mask)
      |                                    ~~~~~~~~~~~~~~^~~~~~

I can do some further investigation if wanted but just thought it was worth reporting. Not particularly important though, I can just opt out of znver4 -march & -mtune for specifically simde.

[mr-c]

Thank you @PartyWumpus for your report. Can you try again with the latest development code? a860f4f