[libclc] [libclc] Move sign to the CLC builtins library (PR #115699)

[Fraser Cormack via cfe-commits]

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@@ -322,22 +322,26 @@ foreach( t ${LIBCLC_TARGETS_TO_BUILD} )
 
     if ( ARCH STREQUAL spirv OR ARCH STREQUAL spirv64 )
       set( build_flags -O0 -finline-hint-functions -DCLC_SPIRV )
-      set( opt_flags )
+      set( clc_opt_flags )
+      # Inline CLC functions into OpenCL builtins
+      set( opencl_opt_flags "--passes=always-inline" )
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frasercrmck wrote:

Thanks, I've updated the PR. Now `sign` calls `__clc_sign` for all types on SPIR-V.

Mangling shouldn't be a problem. OpenCL builtins will maintain their mangling throughout these patches.

https://github.com/llvm/llvm-project/pull/115699