i386.c (expand_fp_movcc): Fix condition reversal code.

	* i386.c (expand_fp_movcc): Fix condition reversal code.

	* i386.c (ix86_register_move_cost): Fix handling of reformating penalty
	* i386.h (INTEGER_CLASS_P, MAYBE_INTEGER_CLASS_P): New.
	(CLASS_MAX_NREGS): Use it.

	* i386.h (HARD_REGNO_NREGS): Handle properly TF and TCmodes on 64bit;
	handle properly complex values.
	(CLASS_MAX_NREGS): Likewise; update comment.

From-SVN: r41206

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7b97401bf57b4f6a42c23a3aa2906998524be3c5..286a585c2b079257ea6cfc5d16cf5be6a5b72e3f 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,15 @@
+Mon Apr  9 16:18:03 CEST 2001  Jan Hubicka  <jh@suse.cz>
+
+       * i386.c (expand_fp_movcc): Fix condition reversal code.
+
+       * i386.c (ix86_register_move_cost): Fix handling of reformating penalty
+       * i386.h (INTEGER_CLASS_P, MAYBE_INTEGER_CLASS_P): New.
+       (CLASS_MAX_NREGS): Use it.
+
+       * i386.h (HARD_REGNO_NREGS): Handle properly TF and TCmodes on 64bit;
+       handle properly complex values.
+       (CLASS_MAX_NREGS): Likewise; update comment.
+
 2001-04-05  Bernd Schmidt  <bernds@redhat.com>
 
        * ia64.c (ia64_flag_schedule_insns2): New variable.

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index a3bbc7827e956672eaa5bdc47eafed49b2747b89..a108a97571b5c13ae8846f1bb81ec65132a00367 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -6605,7 +6605,8 @@ ix86_expand_fp_movcc (operands)
       /* We may be called from the post-reload splitter.  */
       && (!REG_P (operands[0])
          || SSE_REG_P (operands[0])
-         || REGNO (operands[0]) >= FIRST_PSEUDO_REGISTER))
+         || REGNO (operands[0]) >= FIRST_PSEUDO_REGISTER)
+      && 0)
     {
       rtx op0 = ix86_compare_op0, op1 = ix86_compare_op1;
       code = GET_CODE (operands[1]);
@@ -6668,7 +6669,7 @@ ix86_expand_fp_movcc (operands)
        {
          rtx tmp = operands[2];
          operands[2] = operands[3];
-         operands[2] = tmp;
+         operands[3] = tmp;
          operands[1] = gen_rtx_fmt_ee (reverse_condition_maybe_unordered
                                          (GET_CODE (operands[1])),
                                        VOIDmode, ix86_compare_op0,
@@ -10400,13 +10401,13 @@ ix86_register_move_cost (mode, class1, class2)
      stall.  Count this as arbitarily high cost of 20.  */
   if (ix86_secondary_memory_needed (class1, class2, mode, 0))
     {
+      int add_cost = 0;
       if (CLASS_MAX_NREGS (class1, mode) > CLASS_MAX_NREGS (class2, mode))
-       return 10;
+         add_cost = 20;
       return (MEMORY_MOVE_COST (mode, class1, 0)
-             + MEMORY_MOVE_COST (mode, class2, 1));
+             + MEMORY_MOVE_COST (mode, class2, 1) + add_cost);
     }
-  /* Moves between SSE/MMX and integer unit are expensive.
-     ??? We should make this cost CPU specific.  */
+  /* Moves between SSE/MMX and integer unit are expensive.  */
   if (MMX_CLASS_P (class1) != MMX_CLASS_P (class2)
       || SSE_CLASS_P (class1) != SSE_CLASS_P (class2))
     return ix86_cost->mmxsse_to_integer;

diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index c44882781bc32a8784b648ab5088824353fc8118..92a347d0b76a37607dd4e2786ede7fe5b9090a5e 100644 (file)
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -851,9 +851,12 @@ extern int ix86_arch;
    */
 
 #define HARD_REGNO_NREGS(REGNO, MODE)   \
-  (FP_REGNO_P (REGNO) || SSE_REGNO_P (REGNO) || MMX_REGNO_P (REGNO) ? 1 \
+  (FP_REGNO_P (REGNO) || SSE_REGNO_P (REGNO) || MMX_REGNO_P (REGNO)    \
+   ? (COMPLEX_MODE_P (MODE) ? 2 : 1)                                   \
    : (MODE == TFmode                                                   \
-      ? 3                                                              \
+      ? (TARGET_64BIT ? 2 : 3)                                         \
+      : MODE == TCmode                                                 \
+      ? (TARGET_64BIT ? 4 : 6)                                         \
       : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)))
 
 #define VALID_SSE_REG_MODE(MODE) \
@@ -1067,9 +1070,11 @@ enum reg_class
 
 #define N_REG_CLASSES (int) LIM_REG_CLASSES
 
+#define INTEGER_CLASS_P(CLASS) (reg_class_subset_p (CLASS, GENERAL_REGS))
 #define FLOAT_CLASS_P(CLASS) (reg_class_subset_p (CLASS, FLOAT_REGS))
 #define SSE_CLASS_P(CLASS) (reg_class_subset_p (CLASS, SSE_REGS))
 #define MMX_CLASS_P(CLASS) (reg_class_subset_p (CLASS, MMX_REGS))
+#define MAYBE_INTEGER_CLASS_P(CLASS) (reg_classes_intersect_p (CLASS, GENERAL_REGS))
 #define MAYBE_FLOAT_CLASS_P(CLASS) (reg_classes_intersect_p (CLASS, FLOAT_REGS))
 #define MAYBE_SSE_CLASS_P(CLASS) (reg_classes_intersect_p (SSE_REGS, CLASS))
 #define MAYBE_MMX_CLASS_P(CLASS) (reg_classes_intersect_p (MMX_REGS, CLASS))
@@ -1314,11 +1319,15 @@ enum reg_class
 /* Return the maximum number of consecutive registers
    needed to represent mode MODE in a register of class CLASS.  */
 /* On the 80386, this is the size of MODE in words,
-   except in the FP regs, where a single reg is always enough.  */
+   except in the FP regs, where a single reg is always enough.
+   The TFmodes are really just 80bit values, so we use only 3 registers
+   to hold them, instead of 4, as the size would suggest.
+ */
 #define CLASS_MAX_NREGS(CLASS, MODE)                                   \
- (FLOAT_CLASS_P (CLASS) || SSE_CLASS_P (CLASS) || MMX_CLASS_P (CLASS)  \
-  ? 1                                                                  \
-  : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
+ (!MAYBE_INTEGER_CLASS_P (CLASS)                                       \
+  ? (COMPLEX_MODE_P (MODE) ? 2 : 1)                                    \
+  : ((GET_MODE_SIZE ((MODE) == TFmode ? XFmode : (MODE))               \
+     + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
 
 /* A C expression whose value is nonzero if pseudos that have been
    assigned to registers of class CLASS would likely be spilled