s390x fails to compile when using LLVM vector math

[gnzlbg]

On s390x-unknown-linux-gnu coresimd fails to compile due to errors in the following floating-point vector functions:

• abs
• cos
• fma
• sin
• sqrt

The errors are all of the form:

Intrinsic has incorrect return type!
void (<16 x float>*, <16 x float>*, <16 x float>*, <16 x float>*)* @llvm.fma.v16f32
LLVM ERROR: Broken function found, compilation aborted!

This is currently worked around by falling back to scalar code.

[jparris]

Hi there I think that issue is blocking from compiling my code. Just a heads up I can't currently publicly share the source because I'm working through the Open Source Review Board at my company so it's currently a private git lab project; but I'd be happy to add you.

Here's my ask, is there are work around or do I have to down grade rustc?

Rust Version

λ rustc +nightly --version
rustc 1.29.0-nightly (254f8796b 2018-07-13)

Cargo Linking Error

RUST_TARGET_PATH=/c/Users/parrisj/cmder/munin/arch/x86_64 cargo xbuild --release --target=x86_64-uefi
   Compiling bootloader v0.1.0 (file:///C:/Users/parrisj/cmder/munin)
error: linking with `rust-lld` failed: exit code: 1
  |
  = note: "rust-lld" "-flavor" "link" "/Subsystem:EFI_Application" "/Entry:efi_main" "/LIBPATH:C:\\Users\\parrisj\\cmder\\munin\\target/sysroot\\lib\\rustlib\\x86_64-uefi\\lib" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\bootloader-4ced9f417502849c.bootloader0-bcb100f34ebc7f02f717983d8f103bc9.rs.rcgu.o" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\bootloader-4ced9f417502849c.bootloader1-bcb100f34ebc7f02f717983d8f103bc9.rs.rcgu.o" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\bootloader-4ced9f417502849c.bootloader10-bcb100f34ebc7f02f717983d8f103bc9.rs.rcgu.o" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\bootloader-4ced9f417502849c.bootloader2-bcb100f34ebc7f02f717983d8f103bc9.rs.rcgu.o" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\bootloader-4ced9f417502849c.bootloader3-bcb100f34ebc7f02f717983d8f103bc9.rs.rcgu.o" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\bootloader-4ced9f417502849c.bootloader4-bcb100f34ebc7f02f717983d8f103bc9.rs.rcgu.o" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\bootloader-4ced9f417502849c.bootloader5-bcb100f34ebc7f02f717983d8f103bc9.rs.rcgu.o" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\bootloader-4ced9f417502849c.bootloader6-bcb100f34ebc7f02f717983d8f103bc9.rs.rcgu.o" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\bootloader-4ced9f417502849c.bootloader7-bcb100f34ebc7f02f717983d8f103bc9.rs.rcgu.o" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\bootloader-4ced9f417502849c.bootloader8-bcb100f34ebc7f02f717983d8f103bc9.rs.rcgu.o" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\bootloader-4ced9f417502849c.bootloader9-bcb100f34ebc7f02f717983d8f103bc9.rs.rcgu.o" "/OUT:C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\bootloader-4ced9f417502849c.efi" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\bootloader-4ced9f417502849c.crate.allocator.rcgu.o" "/OPT:REF,ICF" "/DEBUG" "/LIBPATH:C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps" "/LIBPATH:C:\\Users\\parrisj\\cmder\\munin\\target\\release\\deps" "/LIBPATH:C:\\Users\\parrisj\\cmder\\munin\\target/sysroot\\lib\\rustlib\\x86_64-uefi\\lib" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\liblibuefi-41d976979dad1f5f.rlib" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\libbitflags-0a95afc212cab69b.rlib" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\libcty-bd5ebc451b70e9fd.rlib" "C:\\Users\\parrisj\\cmder\\munin\\target\\x86_64-uefi\\release\\deps\\libm-64e66ec428ec83ae.rlib" "C:\\Users\\parrisj\\cmder\\munin\\target\\sysroot\\lib\\rustlib\\x86_64-uefi\\lib\\liballoc-6a272702268a84e2.rlib" "C:\\Users\\parrisj\\cmder\\munin\\target\\sysroot\\lib\\rustlib\\x86_64-uefi\\lib\\libcore-3a4511db3fbdeca3.rlib" "C:\\Users\\parrisj\\cmder\\munin\\target\\sysroot\\lib\\rustlib\\x86_64-uefi\\lib\\libcompiler_builtins-8a9aa99d856971a9.rlib"
  = note: C:\Users\parrisj\cmder\munin\target/sysroot\lib\rustlib\x86_64-pc-windows-msvc\bin\rust-lld.exe: error: undefined symbol: cosf
          >>> referenced by libcore-3a4511db3fbdeca3.rlib(core-3a4511db3fbdeca3.core14-e276c0c41030ff56ff2d46b20e8fd299.rs.rcgu.o):(_ZN66_$LT$f32$u20$as$u20$core..coresimd..ppsv..codegen..cos..RawCos$GT$7raw_cos17hf21246351f8c017cE)


          C:\Users\parrisj\cmder\munin\target/sysroot\lib\rustlib\x86_64-pc-windows-msvc\bin\rust-lld.exe: error: undefined symbol: cos
          >>> referenced by libcore-3a4511db3fbdeca3.rlib(core-3a4511db3fbdeca3.core14-e276c0c41030ff56ff2d46b20e8fd299.rs.rcgu.o):(_ZN66_$LT$f64$u20$as$u20$core..coresimd..ppsv..codegen..cos..RawCos$GT$7raw_cos17h06375172ddf57220E)


          C:\Users\parrisj\cmder\munin\target/sysroot\lib\rustlib\x86_64-pc-windows-msvc\bin\rust-lld.exe: error: undefined symbol: sinf
          >>> referenced by libcore-3a4511db3fbdeca3.rlib(core-3a4511db3fbdeca3.core14-e276c0c41030ff56ff2d46b20e8fd299.rs.rcgu.o):(_ZN66_$LT$f32$u20$as$u20$core..coresimd..ppsv..codegen..sin..RawSin$GT$7raw_sin17h8c7ee830d96fbf03E)

          C:\Users\parrisj\cmder\munin\target/sysroot\lib\rustlib\x86_64-pc-windows-msvc\bin\rust-lld.exe: error: undefined symbol: sin
          >>> referenced by libcore-3a4511db3fbdeca3.rlib(core-3a4511db3fbdeca3.core14-e276c0c41030ff56ff2d46b20e8fd299.rs.rcgu.o):(_ZN66_$LT$f64$u20$as$u20$core..coresimd..ppsv..codegen..sin..RawSin$GT$7raw_sin17h0cd017c349b23414E)

Target Triple

λ cat arch/x86_64/x86_64-uefi.json
{
  "llvm-target": "x86_64-pc-windows-msvc",
  "target-endian": "little",
  "target-pointer-width": "64",
  "target-c-int-width": "32",
  "os": "uefi",
  "arch": "x86_64",
  "data-layout": "e-m:e-i64:64-f80:128-n8:16:32:64-S128",
  "linker": "rust-lld",
  "linker-flavor": "lld-link",
  "pre-link-args": {
    "lld-link": [
      "/Subsystem:EFI_Application",
      "/Entry:efi_main"
    ]
  },
  "panic-strategy": "abort",
  "default-hidden-visibility": true,
  "executables": true,
  "exe-suffix": ".efi",
  "is-like-windows": true
}

[gnzlbg]

This is now tracked in https://github.com/gnzlbg/packed_simd/issues/14

---

@jparris the functions that were causing this issue have been removed from stdsimd, they should land on nightly once stdsimd is updated in rust-lang/rust.

[jparris]

@gnzlbg good to know I wasn't barking up the wrong tree.

[gnzlbg]

@jparris this should have been fixed on nightly. Please let me know if you still can reproduce.