https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67317
--- Comment #8 from uros at gcc dot gnu.org --- Author: uros Date: Wed Sep 2 15:06:56 2015 New Revision: 227405 URL: https://gcc.gnu.org/viewcvs?rev=227405&root=gcc&view=rev Log: Backport from mainline: 2015-08-27 Uros Bizjak <ubiz...@gmail.com> PR target/67317 * config/i386/i386.md (*add<mode>3_cc): Remove insn pattern. (addqi3_cc): Ditto. (UNSPEC_ADD_CARRY): Remove. (addqi3_cconly_overflow): New expander. (*add<dwi>3_doubleword): Split to add<mode>3_cconly_overflow. Adjust for changed add<mode>3_carry. (*neg<dwi>2_doubleword): Adjust for changed add<mode>3_carry. (*sub<dwi>3_doubleword): Adjust for changed sub<mode>3_carry. (<plusminus_insn><mode>3_carry): Remove expander. (*<plusminus_insn><mode>3_carry): Split insn pattern to add<mode>3_carry and sub<mode>3_carry. (plusminus_carry_mnemonic): Remove code attribute. (add<mode>3_carry): Canonicalize insn pattern. (*addsi3_carry_zext): Ditto. (sub<mode>3_carry): Ditto. (*subsi3_carry_zext): Ditto. (adcx<mode>3): Remove insn pattern. (addcarry<mode>): New insn pattern. (subborrow<mode>): Ditto. * config/i386/i386.c (ix86_expand_strlensi_unroll_1): Use gen_addqi3_cconly_overflow instead of gen_addqi3_cc. (ix86_expand_builtin) <case IX86_BUILTIN_SBB32, case IX86_BUILTIN_SBB64, case IX86_BUILTIN_ADDCARRY32, case IX86_BUILTIN_ADDCARRY64>: Use CODE_FOR_subborrowsi, CODE_FOR_subborrowdi, CODE_FOR_addcarrysi and CODE_FOR_addcarrydi. Rewrite expander to not clobber carry flag chains. testsuite/ChangeLog: Backport from mainline: 2015-08-27 Uros Bizjak <ubiz...@gmail.com> PR target/67317 * gcc.target/i386/pr67317-1.c: New test. * gcc.target/i386/pr67317-2.c: Ditto. * gcc.target/i386/pr67317-3.c: Ditto. * gcc.target/i386/pr67317-4.c: Ditto. * gcc.target/i386/adx-addcarryx32-1.c: Also scan for adcl. * gcc.target/i386/adx-addcarryx32-2.c: Also scan for adcq. Added: branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/pr67317-1.c branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/pr67317-2.c branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/pr67317-3.c branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/pr67317-4.c Modified: branches/gcc-5-branch/gcc/ChangeLog branches/gcc-5-branch/gcc/config/i386/i386.c branches/gcc-5-branch/gcc/config/i386/i386.md branches/gcc-5-branch/gcc/testsuite/ChangeLog branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/adx-addcarryx32-1.c branches/gcc-5-branch/gcc/testsuite/gcc.target/i386/adx-addcarryx64-1.c
