m68k.h (PREFERRED_RELOAD_CLASS): Don't force any FP const_doubles to memory.

P
        * m68k.h (PREFERRED_RELOAD_CLASS): Don't force any FP const_doubles
        to memory.

From-SVN: r27805

diff --git a/gcc/config/m68k/m68k.h b/gcc/config/m68k/m68k.h
index 83af5901299c6503cb64971fa9460f9659ef8dd0..aed42c5c117f97ec8c5730e304142ddd0350c879 100644 (file)
--- a/gcc/config/m68k/m68k.h
+++ b/gcc/config/m68k/m68k.h
@@ -461,6 +461,8 @@ extern int target_flags;
        if (TEST_HARD_REG_BIT (x, i))           \
        fixed_regs[i] = call_used_regs[i] = 1;  \
     }                                          \
+  if (flag_pic)                                        \
+    fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1    \
 }
 
 #endif /* defined SUPPORT_SUN_FPA */
@@ -811,10 +813,7 @@ extern enum reg_class regno_reg_class[];
    in some cases it is preferable to use a more restrictive class.
    On the 68000 series, use a data reg if possible when the
    value is a constant in the range where moveq could be used
-   and we ensure that QImodes are reloaded into data regs.
-   Also, if a floating constant needs reloading, put it in memory.
-   Don't do this for !G constants, since all patterns in the md file
-   expect them to be loaded into a register via fpmovecr.  See above.  */
+   and we ensure that QImodes are reloaded into data regs.  */
 
 #define PREFERRED_RELOAD_CLASS(X,CLASS)  \
   ((GET_CODE (X) == CONST_INT                  \
@@ -823,11 +822,10 @@ extern enum reg_class regno_reg_class[];
    ? DATA_REGS                                 \
    : (GET_MODE (X) == QImode && (CLASS) != ADDR_REGS) \
    ? DATA_REGS                                 \
-   : (GET_CODE (X) == CONST_DOUBLE             \
-      && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT) \
-   ? (! CONST_DOUBLE_OK_FOR_LETTER_P (X, 'G')  \
-      && (CLASS == FP_REGS || CLASS == DATA_OR_FP_REGS) \
-      ? FP_REGS : NO_REGS)                     \
+   : (GET_CODE (X) == CONST_DOUBLE                                     \
+      && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT)                  \
+   ? (TARGET_68881 && (CLASS == FP_REGS || CLASS == DATA_OR_FP_REGS)   \
+      ? FP_REGS : NO_REGS)                                             \
    : (TARGET_PCREL                             \
       && (GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == CONST \
          || GET_CODE (X) == LABEL_REF))        \