stdfix.h: New file.

	* ginclude/stdfix.h: New file.
	* Makefile.in (USER_H): Add $(srcdir)/ginclude/stdfix.h.
	(convert.o): Add dependence on fixed-value.h.
	* c-convert.c (convert): Support FIXED_POINT_TYPE.
	* c-cppbuiltin.c (builtin_define_fixed_point_constants): New function
	to define fixed-point constants.
	(c_cpp_builtins): Define fixed-point constants.
	* convert.c (fixed-value.h): New include.
	(convert_to_real): Update comment to include fixed-point.
	Support FIXED_POINT_TYPE.
	(convert_to_integer): Update comment to include fixed-point.
	Support FIXED_POINT_TYPE.
	(convert_to_complex): Support FIXED_POINT_TYPE.
	(convert_to_fixed): New function.
	* convert.h (convert_to_fixed): Declare.
	* genopinit.c: Add comment about $Q for only fixed-point modes.
	(optabs): Add fract_optab, fractuns_optab, satfract_optab,
	satfractuns_optab, add_optab, ssadd_optab, usadd_optab, sub_optab,
	sssub_optab, ussub_optab, smul_optab, ssmul_optab, usmul_optab,
	ssmadd_widen_optab, usmadd_widen_optab, ssdiv_optab, udiv_optab,
	usdiv_optab, ssashl_optab, usashl_optab, neg_optab, ssneg_optab,
	usneg_optab for fixed-point modes.
	(gen_insn): Add force_fixed to track the $Q format for all fixed-point
	modes.
	* optabs.c (optab_for_tree_code): For *DIV_EXPR, LSHIFT_EXPR,
	PLUS_EXPR, MINUS_EXPR, MULT_EXPR, NEGATE_EXPR, return signed or
	unsigned saturation optabs, when type is saturating.
	(shift_optab_p): Return true for SS_ASHIFT or US_ASHIFT.
	(expand_fixed_convert): New function.
	(gen_fixed_libfunc, gen_signed_fixed_libfunc,
	gen_unsigned_fixed_libfunc, gen_int_fp_fixed_libfunc,
	gen_int_fp_signed_fixed_libfunc, gen_int_fixed_libfunc,
	gen_int_signed_fixed_libfunc, gen_int_unsigned_fixed_libfunc,
	gen_fract_conv_libfunc, gen_fractuns_conv_libfunc,
	gen_satfract_conv_libfunc, gen_satfractuns_conv_libfunc): New
	functions.
	(init_optabs): Initialize ssadd_optab, usadd_optab, sssub_optab,
	ussub_optab, ssmul_optab, usmul_optab, ssmadd_widen_optab,
	usmadd_widen_optab, ssmsub_widen_optab, usmsub_widen_optab,
	ssdiv_optab, usdiv_optab, ssashl_optab, usashl_optab, ssneg_optab,
	usneg_optab, fract_optab, fractuns_optab, satfract_optab,
	satfractuns_optab.
	Initialize fixed-point libraries, including add, ssadd, usadd, sub,
	sssub, ussub, mul, ssmul, usmul, div, ssdiv, udiv, usdiv, ashl,
	ssashl, usashl, ashr, lshr, neg, ssneg, usneg, cmp, fract, satfract,
	fractuns, satfractuns.
	* optabs.h (enum optab_index): Add OTI_ssadd, OTI_usadd, OTI_sssub,
	OTI_ussub, OTI_ssmul, OTI_usmul, OTI_ssdiv, OTI_usdiv, OTI_ssneg,
	OTI_usneg, OTI_ssashl, OTI_usashl, OTI_ssmadd_widen, OTI_usmadd_widen,
	OTI_ssmsub_widen,  OTI_usmsub_widen.
	(ssadd_optab, usadd_optab, sssub_optab, ussub_optab, ssmul_optab,
	usmul_optab, ssdiv_optab, usdiv_optab, ssneg_optab, usneg_optab,
	ssashl_optab, usashl_optab, ssmadd_widen_optab, usmadd_widen_optab,
	umsub_widen_optab, usmsub_widen_optab): Define.
	(enum convert_optab_index): Add COI_fract, COI_fractuns, COI_satfract,
	COI_satfractuns.
	(fract_optab, fractuns_optab, satfract_optab, satfractuns_optab):
	Define.
	(expand_fixed_convert): Declare.
	* expr.c (convert_move): Support the move of fixed-point modes.
	(emit_move_insn_1): Handle fixed-point mode to move via integer.
	(categorize_ctor_elements_1): Handle FIXED_CST.
	(count_type_elements): Handle FIXED_POINT_TYPE.
	(expand_expr_real_1): For VECTOR_CST, check MODE_VECTOR_FRACT,
	MODE_VECTOR_UFRACT, MODE_VECTOR_ACCUM, MODE_VECTOR_UACCUM.
	Support FIXED_CST.
	For PLUS_EXPR and MINUS_EXPR, support saturating and non-saturating
	multiply and add/subtract for fixed-point types.
	For MULT_EXPR, *DIV_EXPR, *SHIFT_EXPR, if the mode if a fixed-point
	mode, we jump to binop directly.
	Support FIXED_CONVERT_EXPR.
	(do_store_flag): Check FIXED_CST to put a constant second.
	(vector_mode_valid_p): Handle MODE_VECTOR_FRACT,
	MODE_VECTOR_UFRACT, MODE_VECTOR_ACCUM, MODE_VECTOR_UACCUM.
	(const_vector_from_tree): Support FIXED_CST.
	* doc/extend.texi (Fixed-Point): New node.
	* doc/md.texi (ssadd, usadd, sssub, ussub, ssmul, usmul, ssdiv, usdiv,
	ssmadd, usmadd, ssmsub, usmsub, ssashl, usashl, ssneg, usneg, fract,
	satfract, fractuns, satfractuns): Document them.

From-SVN: r128218

1 files changed, 59 insertions, 0 deletions

diff --git a/gcc/optabs.h b/gcc/optabs.h
index a85b3f3..9dd9813 100644
--- a/gcc/optabs.h
+++ b/gcc/optabs.h
@@ -75,6 +75,20 @@ typedef struct convert_optab *convert_optab;
 /* Enumeration of valid indexes into optab_table.  */
 enum optab_index
 {
+  /* Fixed-point operators with signed/unsigned saturation */
+  OTI_ssadd,
+  OTI_usadd,
+  OTI_sssub,
+  OTI_ussub,
+  OTI_ssmul,
+  OTI_usmul,
+  OTI_ssdiv,
+  OTI_usdiv,
+  OTI_ssneg,
+  OTI_usneg,
+  OTI_ssashl,
+  OTI_usashl,
+
   OTI_add,
   OTI_addv,
   OTI_sub,
@@ -97,12 +111,28 @@ enum optab_index
   /* Unsigned multiply and add with the result and addend one machine mode
      wider than the multiplicand and multiplier.  */
   OTI_umadd_widen,
+  /* Signed multiply and add with the result and addend one machine mode
+     wider than the multiplicand and multiplier.
+     All involved operations are saturating.  */
+  OTI_ssmadd_widen,
+  /* Unigned multiply and add with the result and addend one machine mode
+     wider than the multiplicand and multiplier.
+     All involved operations are saturating.  */
+  OTI_usmadd_widen,
   /* Signed multiply and subtract the result and minuend one machine mode
      wider than the multiplicand and multiplier.  */
   OTI_smsub_widen,
   /* Unsigned multiply and subtract the result and minuend one machine mode
      wider than the multiplicand and multiplier.  */
   OTI_umsub_widen,
+  /* Signed multiply and subtract the result and minuend one machine mode
+     wider than the multiplicand and multiplier.
+     All involved operations are saturating.  */
+  OTI_ssmsub_widen,
+  /* Unigned multiply and subtract the result and minuend one machine mode
+     wider than the multiplicand and multiplier.
+     All involved operations are saturating.  */
+  OTI_usmsub_widen,
 
   /* Signed divide */
   OTI_sdiv,
@@ -332,6 +362,19 @@ enum optab_index
 
 extern optab optab_table[OTI_MAX];
 
+#define ssadd_optab (optab_table[OTI_ssadd])
+#define usadd_optab (optab_table[OTI_usadd])
+#define sssub_optab (optab_table[OTI_sssub])
+#define ussub_optab (optab_table[OTI_ussub])
+#define ssmul_optab (optab_table[OTI_ssmul])
+#define usmul_optab (optab_table[OTI_usmul])
+#define ssdiv_optab (optab_table[OTI_ssdiv])
+#define usdiv_optab (optab_table[OTI_usdiv])
+#define ssneg_optab (optab_table[OTI_ssneg])
+#define usneg_optab (optab_table[OTI_usneg])
+#define ssashl_optab (optab_table[OTI_ssashl])
+#define usashl_optab (optab_table[OTI_usashl])
+
 #define add_optab (optab_table[OTI_add])
 #define sub_optab (optab_table[OTI_sub])
 #define smul_optab (optab_table[OTI_smul])
@@ -344,8 +387,12 @@ extern optab optab_table[OTI_MAX];
 #define usmul_widen_optab (optab_table[OTI_usmul_widen])
 #define smadd_widen_optab (optab_table[OTI_smadd_widen])
 #define umadd_widen_optab (optab_table[OTI_umadd_widen])
+#define ssmadd_widen_optab (optab_table[OTI_ssmadd_widen])
+#define usmadd_widen_optab (optab_table[OTI_usmadd_widen])
 #define smsub_widen_optab (optab_table[OTI_smsub_widen])
 #define umsub_widen_optab (optab_table[OTI_umsub_widen])
+#define ssmsub_widen_optab (optab_table[OTI_ssmsub_widen])
+#define usmsub_widen_optab (optab_table[OTI_usmsub_widen])
 #define sdiv_optab (optab_table[OTI_sdiv])
 #define smulv_optab (optab_table[OTI_smulv])
 #define sdivv_optab (optab_table[OTI_sdivv])
@@ -501,6 +548,11 @@ enum convert_optab_index
   COI_lfloor,
   COI_lceil,
 
+  COI_fract,
+  COI_fractuns,
+  COI_satfract,
+  COI_satfractuns,
+
   COI_MAX
 };
 
@@ -519,6 +571,10 @@ extern convert_optab convert_optab_table[COI_MAX];
 #define lround_optab (convert_optab_table[COI_lround])
 #define lfloor_optab (convert_optab_table[COI_lfloor])
 #define lceil_optab (convert_optab_table[COI_lceil])
+#define fract_optab (convert_optab_table[COI_fract])
+#define fractuns_optab (convert_optab_table[COI_fractuns])
+#define satfract_optab (convert_optab_table[COI_satfract])
+#define satfractuns_optab (convert_optab_table[COI_satfractuns])
 
 /* These arrays record the insn_code of insns that may be needed to
    perform input and output reloads of special objects.  They provide a
@@ -693,6 +749,9 @@ extern void set_optab_libfunc (optab, enum machine_mode, const char *);
 extern void set_conv_libfunc (convert_optab, enum machine_mode,
 			      enum machine_mode, const char *);
 
+/* Generate code for a FIXED_CONVERT_EXPR.  */
+extern void expand_fixed_convert (rtx, rtx, int, int);
+
 /* Generate code for a FLOAT_EXPR.  */
 extern void expand_float (rtx, rtx, int);