Description:

Attempting to compile simple HLSL shaders to DXIL with dxc from Arch repo causes an assertion failure and results in a core dump. Binaries provided by Microsoft successfully compile the same shaders.

Additional info:
* package version(s): directx-shader-compiler=1.7.2212-1
* config and/or log files: see below

Steps to reproduce:

$ curl -Lso ./shaders.hlsl 'https://raw.githubusercontent.com/microsoft/DirectX-Graphics-Samples/master/Samples/Desktop/D3D12HelloWorld/src/HelloTriangle/shaders.hlsl'
$ dxc -E VSMain -T vs_6_0 -Fo ./vs.dxil ./shaders.hlsl; echo $?; file ./vs.dxil

Result:

dxc: /build/directx-shader-compiler/src/directx-shader-compiler-1.7.2212/lib/IR/User.cpp:44: void llvm::User::allocHungoffUses(unsigned int, bool): Assertion `HasHungOffUses && "alloc must have hung off uses"' failed.
Aborted (core dumped)
134
./vs.dxil: cannot open './vs.dxil' (No such file or directory)

Expected result (including reproduction steps):

$ curl -Ls 'https://github.com/microsoft/DirectXShaderCompiler/releases/download/v1.7.2212/linux_dxc_2022_12_16.tar.gz' | bsdtar xf -
$ chmod +x ./bin/x64/dxc
$ LD_LIBRARY_PATH=~+/lib/x64 ./bin/x64/dxc -E VSMain -T vs_6_0 -Fo ./vs.dxil ./shaders.hlsl; echo $?; file ./vs.dxil
warning: DXIL.dll not found. Resulting DXIL will not be signed for use in release environments.


0
./vs.dxil: data