https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67995
--- Comment #3 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> --- Author: hjl Date: Mon Oct 19 11:18:14 2015 New Revision: 228967 URL: https://gcc.gnu.org/viewcvs?rev=228967&root=gcc&view=rev Log: Don't leak ISA to __attribute__ ((target("arch=XXX"))) When processing __attribute__ ((target("arch=XXX"))), we should clear the ISA bits in x_ix86_isa_flags first to avoid leaking ISA from command line. gcc/ PR target/67995 * config/i386/i386.c (ix86_valid_target_attribute_tree): If arch= is set, clear all bits in x_ix86_isa_flags, except for ISA_64BIT, ABI_64, ABI_X32, and CODE16. gcc/testsuite/ PR target/67995 * gcc.target/i386/pr67995-1.c: New test. * gcc.target/i386/pr67995-2.c: Likewise. * gcc.target/i386/pr67995-3.c: Likewise. Added: trunk/gcc/testsuite/gcc.target/i386/pr67995-1.c trunk/gcc/testsuite/gcc.target/i386/pr67995-2.c trunk/gcc/testsuite/gcc.target/i386/pr67995-3.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/i386/i386.c trunk/gcc/testsuite/ChangeLog