PR target/19005

        * config/i386/i386.md (swaphi_1): Swap with swaphi_2, allow with
        optimize_size.
        (swapqi_1): Rename from swapqi.  Enable only for no partial reg
        stall and optimize_size.
        (swapqi_2): New.
        (swaphi_1, swaphi_2, swapqi_1): Add athlon_decode.
        (swapsi, swaphi_1, swaphi_2, swapqi_1, swapdi): Remove modrm override.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@92250 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6791a46..d40af36 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,14 @@
+2004-12-15  Richard Henderson  <rth@redhat.com>
+
+       PR target/19005
+       * config/i386/i386.md (swaphi_1): Swap with swaphi_2, allow with
+       optimize_size.
+       (swapqi_1): Rename from swapqi.  Enable only for no partial reg
+       stall and optimize_size.
+       (swapqi_2): New.
+       (swaphi_1, swaphi_2, swapqi_1): Add athlon_decode.
+       (swapsi, swaphi_1, swaphi_2, swapqi_1, swapdi): Remove modrm override.
+
 2004-12-16  Uros Bizjak  <uros@kss-loka.si>
 
        * config/i386/i386.md (*floathisf2_i387, *floathidf2_i387):
@@ -57,13 +68,13 @@
        on the STMT_EXPR wrapping up the inlined body.
 
 2004-12-15  Vladimir Makarov  <vmakarov@redhat.com>
-            Steven Bosscher  <stevenb@suse.de>
+           Steven Bosscher  <stevenb@suse.de>
        PR middle end/17340
 
        * global.c: Update comments in a few places.
        (check_earlyclobber): Return true if there are early clobber
        classes.
-        (calculate_local_reg_bb_info): Do not try to mark earlyclobber
+       (calculate_local_reg_bb_info): Do not try to mark earlyclobber
        regs if there are none.
        (bb_info, allocate_bb_info, free_bb_info, modify_reg_pav,
        make_accurate_live_analysis): Rename pavin, pavout to live_pavin,

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 5500de2..db6a724 100644 (file)
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -1238,10 +1238,9 @@
   ""
   "xchg{l}\t%1, %0"
   [(set_attr "type" "imov")
-   (set_attr "pent_pair" "np")
-   (set_attr "athlon_decode" "vector")
    (set_attr "mode" "SI")
-   (set_attr "modrm" "0")])
+   (set_attr "pent_pair" "np")
+   (set_attr "athlon_decode" "vector")])
 
 (define_expand "movhi"
   [(set (match_operand:HI 0 "nonimmediate_operand" "")
@@ -1355,24 +1354,24 @@
        (match_operand:HI 1 "register_operand" "+r"))
    (set (match_dup 1)
        (match_dup 0))]
-  "TARGET_PARTIAL_REG_STALL"
-  "xchg{w}\t%1, %0"
+  "!TARGET_PARTIAL_REG_STALL || optimize_size"
+  "xchg{l}\t%k1, %k0"
   [(set_attr "type" "imov")
+   (set_attr "mode" "SI")
    (set_attr "pent_pair" "np")
-   (set_attr "mode" "HI")
-   (set_attr "modrm" "0")])
+   (set_attr "athlon_decode" "vector")])
 
 (define_insn "*swaphi_2"
   [(set (match_operand:HI 0 "register_operand" "+r")
        (match_operand:HI 1 "register_operand" "+r"))
    (set (match_dup 1)
        (match_dup 0))]
-  "! TARGET_PARTIAL_REG_STALL"
-  "xchg{l}\t%k1, %k0"
+  "TARGET_PARTIAL_REG_STALL"
+  "xchg{w}\t%1, %0"
   [(set_attr "type" "imov")
+   (set_attr "mode" "HI")
    (set_attr "pent_pair" "np")
-   (set_attr "mode" "SI")
-   (set_attr "modrm" "0")])
+   (set_attr "athlon_decode" "vector")])
 
 (define_expand "movstricthi"
   [(set (strict_low_part (match_operand:HI 0 "nonimmediate_operand" ""))
@@ -1521,17 +1520,29 @@
   DONE;
 })
 
-(define_insn "*swapqi"
+(define_insn "*swapqi_1"
   [(set (match_operand:QI 0 "register_operand" "+r")
        (match_operand:QI 1 "register_operand" "+r"))
    (set (match_dup 1)
        (match_dup 0))]
-  ""
-  "xchg{b}\t%1, %0"
+  "!TARGET_PARTIAL_REG_STALL || optimize_size"
+  "xchg{l}\t%k1, %k0"
   [(set_attr "type" "imov")
+   (set_attr "mode" "SI")
    (set_attr "pent_pair" "np")
+   (set_attr "athlon_decode" "vector")])
+
+(define_insn "*swapqi_2"
+  [(set (match_operand:QI 0 "register_operand" "+q")
+       (match_operand:QI 1 "register_operand" "+q"))
+   (set (match_dup 1)
+       (match_dup 0))]
+  "TARGET_PARTIAL_REG_STALL"
+  "xchg{b}\t%1, %0"
+  [(set_attr "type" "imov")
    (set_attr "mode" "QI")
-   (set_attr "modrm" "0")])
+   (set_attr "pent_pair" "np")
+   (set_attr "athlon_decode" "vector")])
 
 (define_expand "movstrictqi"
   [(set (strict_low_part (match_operand:QI 0 "nonimmediate_operand" ""))
@@ -2094,12 +2105,10 @@
   "TARGET_64BIT"
   "xchg{q}\t%1, %0"
   [(set_attr "type" "imov")
-   (set_attr "pent_pair" "np")
-   (set_attr "athlon_decode" "vector")
    (set_attr "mode" "DI")
-   (set_attr "modrm" "0")])
+   (set_attr "pent_pair" "np")
+   (set_attr "athlon_decode" "vector")])
 
-  
 (define_expand "movsf"
   [(set (match_operand:SF 0 "nonimmediate_operand" "")
        (match_operand:SF 1 "general_operand" ""))]