Peter Bergner
00d07ec6e1
The __builtin_vsx_assemble_pair and __builtin_mma_assemble_acc built-ins currently assign their first source operand to the first VSX register in a pair/quad, their second operand to the second register in a pair/quad, etc. This is not endian friendly and forces the user to generate different calls depending on endianness. In agreement with the POWER LLVM team, we've decided to lightly deprecate the assemble built-ins and replace them with "build" built-ins that automatically handle endianness so the same built-in call and be used for both little-endian and big-endian compiles. We are not removing the assemble built-ins, since there is code in the wild that use them, but we are removing their documentation to encourage the use of the new "build" variants. gcc/ * config/rs6000/rs6000-builtin.def (build_pair): New built-in. (build_acc): Likewise. * config/rs6000/rs6000-call.c (mma_expand_builtin): Swap assemble source operands in little-endian mode. (rs6000_gimple_fold_mma_builtin): Handle VSX_BUILTIN_BUILD_PAIR. (mma_init_builtins): Likewise. * config/rs6000/rs6000.c (rs6000_split_multireg_move): Handle endianness ordering for the MMA assemble and build source operands. * doc/extend.texi (__builtin_vsx_build_acc, __builtin_mma_build_pair): Document. (__builtin_mma_assemble_acc, __builtin_mma_assemble_pair): Remove documentation. gcc/testsuite/ * gcc.target/powerpc/mma-builtin-4.c (__builtin_vsx_build_pair): Add tests. Update expected counts. * gcc.target/powerpc/mma-builtin-5.c (__builtin_mma_build_acc): Add tests. Update expected counts.
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