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authorJakub Jelinek <jakub@redhat.com>2017-09-30 10:10:15 +0200
committerJakub Jelinek <jakub@gcc.gnu.org>2017-09-30 10:10:15 +0200
commit15c77315001af0842a537ff748d1a0995ad38545 (patch)
tree88422c20d5913d279b89b716af89576b2fe24a3b /config.sub
parent6bc1d858fbeba5ed7ee06266a3d6738bad2d8b3f (diff)
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re PR target/82361 (Useless "mov eax, eax" in generated code)
PR target/82361 * config/i386/i386.md (TARGET_USE_8BIT_IDIV zext divmodsi4 splitter): New define_split. (divmodsi4_zext_1, divmodsi4_zext_2, *divmodsi4_zext_1, *divmodsi4_zext_2): New define_insn_and_split. (*divmodsi4_noext_zext_1, *divmodsi4_noext_zext_2): New define_insn. (TARGET_USE_8BIT_IDIV zext udivmodsi4 splitter): New define_split. (udivmodsi4_zext_1, udivmodsi4_zext_2, *udivmodsi4_zext_1, *udivmodsi4_zext_2, *udivmodsi4_pow2_zext_1, *udivmodsi4_pow2_zext_2): New define_insn_and_split. (*udivmodsi4_noext_zext_1, *udivmodsi4_noext_zext_2): New define_insn. * config/i386/i386.c (ix86_split_idivmod): Handle operands[0] or operands[1] having DImode when mode is SImode. * gcc.target/i386/pr82361-1.c: New test. * gcc.target/i386/pr82361-2.c: New test. From-SVN: r253317
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