https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101395
--- Comment #12 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by H.J. Lu <h...@gcc.gnu.org>: https://gcc.gnu.org/g:cc11b924bfe7752edbba052ca71653f46a60887a commit r12-2296-gcc11b924bfe7752edbba052ca71653f46a60887a Author: H.J. Lu <hjl.to...@gmail.com> Date: Fri Jul 9 09:16:01 2021 -0700 x86: Don't enable UINTR in 32-bit mode UINTR is available only in 64-bit mode. Since the codegen target is unknown when the the gcc driver is processing -march=native, to properly handle UINTR for -march=native: 1. Pass "arch [32|64]" and "tune [32|64]" to host_detect_local_cpu to indicate 32-bit and 64-bit codegen. 2. Change ix86_option_override_internal to enable UINTR only in 64-bit mode for -march=CPU when PTA_CPU includes PTA_UINTR. gcc/ PR target/101395 * config/i386/driver-i386.c (host_detect_local_cpu): Check "arch [32|64]" and "tune [32|64]" for 32-bit and 64-bit codegen. Enable UINTR only for 64-bit codegen. * config/i386/i386-options.c (ix86_option_override_internal::DEF_PTA): Skip PTA_UINTR if not in 64-bit mode. * config/i386/i386.h (ARCH_ARG): New. (CC1_CPU_SPEC): Pass "[arch|tune] 32" for 32-bit codegen and "[arch|tune] 64" for 64-bit codegen. gcc/testsuite/ PR target/101395 * gcc.target/i386/pr101395-1.c: New test. * gcc.target/i386/pr101395-2.c: Likewise. * gcc.target/i386/pr101395-3.c: Likewise.
