[BUG]: ispc (trunk) outdated LLVM version

[Aleksei Nurmukhametov]

Describe the bug

LLVM version is used to build ISPC : 15.0. Whereas, at the moment ISPC uses LLVM 17.0.

Steps to reproduce

1. Visit godbolt.org
2. Select "ispc" language
3. Select "ispc (trunk)" compiler
4. Check the compiler version in the status bar.

Intel(r) Implicit SPMD Program Compiler (Intel(r) ISPC), 1.24.0dev (build commit ea4617c61c7eb968 @ 20240408, LLVM 15.0.7)

Expected behavior

Intel(r) Implicit SPMD Program Compiler (Intel(r) ISPC), 1.24.0dev (build commit ea4617c61c7eb968 @ 20240408, LLVM 17.0.6)

Reproduction link

https://ispc.godbolt.org/z/qMW34s6YM

Screenshots

Not applicable

Operating System

No response

Browser version

No response

[Aleksei Nurmukhametov]

The PR to fix this is here: compiler-explorer/ispc-builder#2