From: Eric Botcazou Date: Sat, 18 Oct 2003 07:24:59 +0000 (+0200) Subject: re PR rtl-optimization/8178 (__builtin_ffs broken with -march=k6) X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=67e53009556d04f437d5b855dc50fde37afcf124;p=gcc.git re PR rtl-optimization/8178 (__builtin_ffs broken with -march=k6) PR optimization/8178 * config/i386/i386.md (*movsi_zero): New insn to set a register to zero on TARGET_USE_MOV0 targets. From-SVN: r72634 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a610747877a..b89036c3639 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2003-10-18 Eric Botcazou + + PR optimization/8178 + * config/i386/i386.md (*movsi_zero): New insn to set + a register to zero on TARGET_USE_MOV0 targets. + 2003-10-18 Kelley Cook * Makefile.in (Makefile): Depend on the all Make-lang.in fragments. @@ -16,7 +22,6 @@ * doc/install.texi: Document that zsh does not work when configuring gcc. - 2003-10-17 Nathanael Nerode * config/ptx4.h: Switch to DWARF 2; update comments. diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 39a8a2cc8c7..c79f1ddd5f0 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -1162,6 +1162,15 @@ (set_attr "mode" "SI") (set_attr "length_immediate" "0")]) +(define_insn "*movsi_zero" + [(set (match_operand:SI 0 "register_operand" "=r") + (match_operand:SI 1 "const0_operand" "i")) + (clobber (reg:CC 17))] + "reload_completed && (TARGET_USE_MOV0 && !optimize_size)" + "mov{l}\t{%1, %0|%0, %1}" + [(set_attr "type" "imov") + (set_attr "mode" "SI")]) + (define_insn "*movsi_or" [(set (match_operand:SI 0 "register_operand" "=r") (match_operand:SI 1 "immediate_operand" "i"))