emit-rtl.c (global_rtl): Update comment.

	* emit-rtl.c (global_rtl): Update comment.
	(const_double_htab, const_double_htab_hash,
	const_double_htab_hash, lookup_const_double): New.
	(const_int_htab_hash, const_int_htab_eq): Remove const
	qualifiers, which cause tons of warnings with RTL checking on.
	(gen_rtx_CONST_DOUBLE): Deleted.
	(const_double_from_real_value): New function - bears some
	resemblance to the former immed_real_const_1.
	(immed_double_const): Moved here from varasm.c and
	simplified.
	(gen_rtx_REG): Make REGNO unsigned to squelch warnings.
	(gen_rtx_SUBREG): Use gen_rtx_raw_SUBREG.
	(gen_rtx): Use immed_double_const.
	(init_emit_once): Initialize the const_double_htab.  Use
	REAL_VALUE_FROM_INT where possible.  Can now use
	CONST_DOUBLE_FROM_REAL_VALUE when setting up const_tiny_rtx.
	* varasm.c (struct varasm_status): Remove x_const_double_chain.
	(const_double_chain, immed_real_const, clear_const_double_mem): Delete.
	(immed_double_const, immed_real_const_1): Moved to emit-rtl.c.
	(init_varasm_status, mark_varasm_status): Don't touch
	x_const_double_chain.

	* output.h: Delete prototype for clear_const_double_mem.
	* real.h: Make REAL_VALUE_TYPE a macro again.  Remove leading
	'0' slot from all CONST_DOUBLE_FORMAT definitions.  Prototype
	const_double_from_real_value, not immed_real_const_1, and use
	it to define CONST_DOUBLE_FROM_REAL_VALUE.  Define new macro
	CONST_DOUBLE_ATOF.
	* rtl.h (CONST_DOUBLE_CHAIN): Kill.
	(CONST_DOUBLE_LOW, CONST_DOUBLE_HIGH): Adjust.
	(gen_rtx_CONST_DOUBLE, immed_real_const): Delete prototypes.
	(gen_rtx_REG): Second arg is unsigned.

	* gengenrtl.c (special_rtx): Take out CONST_DOUBLE.
	(excluded_rtx): New, return true for CONST_DOUBLE.
	(genmacro): Write nothing for excluded codes.
	* combine.c (combine_simplify_rtx): Use CONST_DOUBLE_FROM_REAL_VALUE.
	* expr.c (expand_expr): Likewise.
	* ggc-common.c (ggc_mark_rtx_children_1): Don't mark the
	CONST_DOUBLE_CHAIN.
	* toplev.c (rest_of_compilation): Don't call
	clear_const_double_mem.

	* config/rs6000/rs6000.c (rs6000_float_const): Delete.
	(rs6000_hash_constant): Remove CONST_DOUBLE special case.
	(toc_hash_eq): Remove CONST_DOUBLE and LABEL_REF special cases.
	* config/rs6000/rs6000-protos.h: Don't prototype rs6000_float_const.
	* config/c4x/c4x.md, config/rs6000/rs6000.md: Use CONST_DOUBLE_ATOF.
	* config/dsp16xx/dsp16xx.md, config/mips/mips.md,
	config/pa/pa.md: Use CONST_DOUBLE_FROM_REAL_VALUE.
	* config/sparc/sparc.md, config/sparc/sparc.c: Use immed_double_const.

From-SVN: r53409

2 files changed, 9 insertions, 11 deletions

diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c
index 6219be324e5..ad1b3c0c65e 100644
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -1379,9 +1379,8 @@ sparc_emit_set_const32 (op0, op1)
 	  && (INTVAL (op1) & 0x80000000) != 0)
 	emit_insn (gen_rtx_SET
 		   (VOIDmode, temp,
-		    gen_rtx_CONST_DOUBLE (VOIDmode,
-					  INTVAL (op1) & ~(HOST_WIDE_INT)0x3ff,
-					  0)));
+		    immed_double_const (INTVAL (op1) & ~(HOST_WIDE_INT)0x3ff,
+					0, DImode)));
       else
 	emit_insn (gen_rtx_SET (VOIDmode, temp,
 				GEN_INT (INTVAL (op1)
@@ -1559,11 +1558,10 @@ static rtx gen_safe_XOR64 PARAMS ((rtx, HOST_WIDE_INT));
 #define GEN_INT64(__x)			GEN_INT (__x)
 #else
 #define GEN_HIGHINT64(__x) \
-	gen_rtx_CONST_DOUBLE (VOIDmode, (__x) & ~(HOST_WIDE_INT)0x3ff, 0)
+	immed_double_const ((__x) & ~(HOST_WIDE_INT)0x3ff, 0, DImode)
 #define GEN_INT64(__x) \
-	gen_rtx_CONST_DOUBLE (VOIDmode, (__x) & 0xffffffff, \
-			      ((__x) & 0x80000000 \
-			       ? -1 : 0))
+	immed_double_const ((__x) & 0xffffffff, \
+			    ((__x) & 0x80000000 ? -1 : 0), DImode)
 #endif
 
 /* The optimizer is not to assume anything about exactly
@@ -2133,9 +2131,9 @@ sparc_emit_set_const64 (op0, op1)
 	  negated_const = GEN_INT (((~low_bits) & 0xfffffc00) |
 				   (((HOST_WIDE_INT)((~high_bits) & 0xffffffff))<<32));
 #else
-	  negated_const = gen_rtx_CONST_DOUBLE (DImode,
-						(~low_bits) & 0xfffffc00,
-						(~high_bits) & 0xffffffff);
+	  negated_const = immed_double_const ((~low_bits) & 0xfffffc00,
+					      (~high_bits) & 0xffffffff,
+					      DImode);
 #endif
 	  sparc_emit_set_const64 (temp, negated_const);
 	}
diff --git a/gcc/config/sparc/sparc.md b/gcc/config/sparc/sparc.md
index 37ab89916bc..34ec9de765f 100644
--- a/gcc/config/sparc/sparc.md
+++ b/gcc/config/sparc/sparc.md
@@ -3158,7 +3158,7 @@
       emit_insn (gen_movdi (operands[0], GEN_INT (val)));
 #else
       emit_insn (gen_movdi (operands[0],
-                            gen_rtx_CONST_DOUBLE (VOIDmode, l[1], l[0])));
+                            immed_double_const (l[1], l[0], DImode)));
 #endif
     }
   else