JolantaJensen 01797dad86 Fix mechanism propagating mangled names for TLI function mappings (#66656) ...

Currently the mappings from TLI are used to generate the list of
available "scalar to vector" mappings attached to scalar calls as
"vector-function-abi-variant" LLVM IR attribute. Function names from TLI
are wrapped in mangled name following the pattern:
_ZGV<isa><mask><vlen><parameters>_<scalar_name>[(<vector_redirection>)]
The problem is the mangled name uses _LLVM_ as the ISA name which
prevents the compiler to compute vectorization factor for scalable
vectors as it cannot make any decision based on the _LLVM_ ISA. If we
use "s" as the ISA name, the compiler can make decisions based on VFABI
specification where SVE spacific rules are described.

This patch is only a refactoring stage where there is no change to the
compiler's behaviour.

2023-10-02 18:58:39 +01:00

9.0 KiB

Raw Blame History

View Raw