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

* config/i386/i386.c (ix86_rtx_costs): Drop NEG from sub for FMA.
* config/i386/sse.md: Add n to negated FMA pattern names.

From-SVN: r174493

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fdebbd8f7f9ee63df88a6e85f7b7b8cf709e806e..e4aa907408178259ea4dfe9edbe4d3a866624f3a 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+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.

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 85d145a94282e7cc7f84efcb8b4dac31c44b9084..c4f0b9dea0e7f3e04eff33a4b6699b0b76f3f86c 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 058f82bb26dec8eff6461ff97858e7146231eed1..365fbfaa5d9fa0f59fb1b62f89d6271bf3100885 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