* config/i386/i386.c (ix86_rtx_costs): Drop NEG from sub for FMA.

* config/i386/sse.md: Add n to negated FMA pattern names.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@174493 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fdebbd8..e4aa907 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
 2011-05-31  Alexandre Oliva  <aoliva@redhat.com>
 
+       * config/i386/i386.c (ix86_rtx_costs): Drop NEG from sub for FMA.
+       * config/i386/sse.md: Add n to negated FMA pattern names.
+
+2011-05-31  Alexandre Oliva  <aoliva@redhat.com>
+
        * gcc.c (driver_handle_option): Fix disabling of -fcompare-debug.
 
 2011-05-31  Alexandre Oliva  <aoliva@redhat.com>

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 85d145a..c4f0b9d 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -29226,12 +29226,12 @@ ix86_rtx_costs (rtx x, int code, int outer_code_i, int *total, bool speed)
         /* Negate in op0 or op2 is free: FMS, FNMA, FNMS.  */
        sub = XEXP (x, 0);
        if (GET_CODE (sub) == NEG)
-         sub = XEXP (x, 0);
+         sub = XEXP (sub, 0);
        *total += rtx_cost (sub, FMA, speed);
 
        sub = XEXP (x, 2);
        if (GET_CODE (sub) == NEG)
-         sub = XEXP (x, 0);
+         sub = XEXP (sub, 0);
        *total += rtx_cost (sub, FMA, speed);
        return true;
       }

diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index 058f82b..365fbfa 100644 (file)
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -1731,7 +1731,7 @@
   [(set_attr "type" "ssemuladd")
    (set_attr "mode" "<MODE>")])
 
-(define_insn "*fma_fmadd_<mode>"
+(define_insn "*fma_fnmadd_<mode>"
   [(set (match_operand:FMAMODE 0 "register_operand" "=x,x,x")
        (fma:FMAMODE
          (neg:FMAMODE
@@ -1746,7 +1746,7 @@
   [(set_attr "type" "ssemuladd")
    (set_attr "mode" "<MODE>")])
 
-(define_insn "*fma_fmsub_<mode>"
+(define_insn "*fma_fnmsub_<mode>"
   [(set (match_operand:FMAMODE 0 "register_operand" "=x,x,x")
        (fma:FMAMODE
          (neg:FMAMODE