llvm

563401d9 - [libspirv] Replace libclc-remangler with SYCLRemangleLibspirvPass (#21588)

[libspirv] Replace libclc-remangler with SYCLRemangleLibspirvPass (#21588) Remove libclc-remangler tool and replace it with SYCLRemangleLibspirvPass that remangles OpenCL C mangling in libspirv to match with SYCL mangling. The pass ports the functionalities in the tool into compile pipeline. Motivation: - libclc-remangler executable doesn't fit in runtime build. - libclc-remangler can't justify as a standalone tool in llvm/tools. Functional changes: - Add SYCLRemangleLibspirvPass. It uses Itanium demangler and adapts SPIR type system and SPIR mangler from SPIRV-LLVM-Translator. - The pass runs at the end of compile pipeline for each .cl file. libspirv variants are created without separate remangling step. - Drop libclc-remangler tool. llvm-diff changes to remangled libspirv: - __clc_ functions from CLC library are now not remangled because we use a single clc library that defaults to OpenCL C mangling. - Some __clc_ functions from CLC library are no longer inlined for NVPTX. Previously, these were called only once and inlined before remangling. Now, because remangling can generate two caller variants, the __clc_ function is called twice, causing the inliner to skip them. - Changes in _CLC_DEFINE_MIPMAP_BINDLESS_READS_BUILTIN also exposed a bug in libclc-remangler which would remangle _Z30__spirv_ImageSampleExplicitLodImDv4_cDv3_fET0_T_T1_iS4_S4_ (correct) to _Z30__spirv_ImageSampleExplicitLodImDv4_aDv3_fET0_T_T1_iS1_S1_ This bug was hidden since correct symbol was hardcoded in the source. - Fixed 4 __spirv_ImageArrayWrite builtins in nvptx l64.signed_char, e.g. _Z23__spirv_ImageArrayWriteIyiiEvT_T0_T1_i -> _Z23__spirv_ImageArrayWriteIyiiEvT_T0_iT1_; _Z23__spirv_ImageArrayWriteImiiEvT_T0_T1_i -> _Z23__spirv_ImageArrayWriteImiiEvT_T0_iT1_. --------- Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com> Co-authored-by: Yury Plyakhin <yury.plyakhin@intel.com>