<x86gprintrin.h> and target("general-regs-only") function attribute were added to GCC 11. But their implementations are incomplete. I'd like to backport the following patches to GCC 11 branch to finish them.
H.J. Lu (5): x86: Add -mmwait for -mgeneral-regs-only x86: Use crc32 target option for CRC32 intrinsics x86: Remove OPTION_MASK_ISA_SSE4_2 from CRC32 _builtin functions x86: Enable the GPR only instructions for -mgeneral-regs-only <x86gprintrin.h>: Add pragma GCC target("general-regs-only") gcc/common/config/i386/i386-common.c | 45 ++- gcc/config.gcc | 6 +- gcc/config/i386/i386-builtin.def | 8 +- gcc/config/i386/i386-builtins.c | 4 +- gcc/config/i386/i386-c.c | 2 + gcc/config/i386/i386-options.c | 12 + gcc/config/i386/i386.c | 6 +- gcc/config/i386/i386.h | 2 + gcc/config/i386/i386.md | 4 +- gcc/config/i386/i386.opt | 4 + gcc/config/i386/ia32intrin.h | 42 ++- gcc/config/i386/mwaitintrin.h | 52 +++ gcc/config/i386/pmmintrin.h | 13 +- gcc/config/i386/serializeintrin.h | 7 +- gcc/config/i386/sse.md | 4 +- gcc/config/i386/x86gprintrin.h | 13 + gcc/doc/extend.texi | 5 + gcc/doc/invoke.texi | 8 +- gcc/testsuite/gcc.target/i386/crc32-6.c | 13 + gcc/testsuite/gcc.target/i386/monitor-2.c | 27 ++ gcc/testsuite/gcc.target/i386/pr101492-1.c | 10 + gcc/testsuite/gcc.target/i386/pr101492-2.c | 10 + gcc/testsuite/gcc.target/i386/pr101492-3.c | 10 + gcc/testsuite/gcc.target/i386/pr101492-4.c | 12 + gcc/testsuite/gcc.target/i386/pr99744-3.c | 13 + gcc/testsuite/gcc.target/i386/pr99744-4.c | 357 +++++++++++++++++++++ gcc/testsuite/gcc.target/i386/pr99744-5.c | 25 ++ gcc/testsuite/gcc.target/i386/pr99744-6.c | 23 ++ gcc/testsuite/gcc.target/i386/pr99744-7.c | 12 + gcc/testsuite/gcc.target/i386/pr99744-8.c | 13 + 30 files changed, 717 insertions(+), 45 deletions(-) create mode 100644 gcc/config/i386/mwaitintrin.h create mode 100644 gcc/testsuite/gcc.target/i386/crc32-6.c create mode 100644 gcc/testsuite/gcc.target/i386/monitor-2.c create mode 100644 gcc/testsuite/gcc.target/i386/pr101492-1.c create mode 100644 gcc/testsuite/gcc.target/i386/pr101492-2.c create mode 100644 gcc/testsuite/gcc.target/i386/pr101492-3.c create mode 100644 gcc/testsuite/gcc.target/i386/pr101492-4.c create mode 100644 gcc/testsuite/gcc.target/i386/pr99744-3.c create mode 100644 gcc/testsuite/gcc.target/i386/pr99744-4.c create mode 100644 gcc/testsuite/gcc.target/i386/pr99744-5.c create mode 100644 gcc/testsuite/gcc.target/i386/pr99744-6.c create mode 100644 gcc/testsuite/gcc.target/i386/pr99744-7.c create mode 100644 gcc/testsuite/gcc.target/i386/pr99744-8.c -- 2.31.1