vfp.md: Document fmul{s,d} and fmac{s,d} types.

2008-08-28  Paul Brook  <paul@codesourcery.com>

	* config/arm/vfp.md: Document fmul{s,d} and fmac{s,d} types.
	Remove documentation entry for fmul type.
	Use fmuls to annotate single-precision multiplication patterns,
	fmuld to annotate double-precision multiplication patterns,
	fmacs to annotate single-precision multiply-accumulate patterns
	and fmacd to annotate double-precision multiply-accumulate patterns.
	* config/arm/vfp11.md: Update reservations accordingly.
	* config/arm/arm.md: Note that certain values of the "type"
	attribute are documented in vfp.md.
	* config/arm/arm1020e.md: Remove out of date duplicate comment.
	(v10_cvt): Use new fmul types.

From-SVN: r139604

gcc/ChangeLog

+2008-08-28  Paul Brook  <paul@codesourcery.com>
+
+	* config/arm/vfp.md: Document fmul{s,d} and fmac{s,d} types.
+	Remove documentation entry for fmul type.
+	Use fmuls to annotate single-precision multiplication patterns,
+	fmuld to annotate double-precision multiplication patterns,
+	fmacs to annotate single-precision multiply-accumulate patterns
+	and fmacd to annotate double-precision multiply-accumulate patterns.
+	* config/arm/vfp11.md: Update reservations accordingly.
+	* config/arm/arm.md: Note that certain values of the "type"
+	attribute are documented in vfp.md.
+	* config/arm/arm1020e.md: Remove out of date duplicate comment.
+	(v10_cvt): Use new fmul types.
+
 2008-08-26  Paul Brook   <paul@codesourcery.com>
 
 	* config/arm/vfp.md: Move pipeline description for VFP11 to...

gcc/config/arm/arm.md

@@ -193,6 +193,8 @@
 ; scheduling of writes.
 
 ; Classification of each insn
+; Note: vfp.md has different meanings for some of these, and some further
+; types as well.  See that file for details.
 ; alu		any alu  instruction that doesn't hit memory or fp
 ;		regs or have a shifted source operand
 ; alu_shift	any data instruction that doesn't hit memory or fp

gcc/config/arm/arm1020e.md

@@ -265,18 +265,6 @@
 			    (eq_attr "fpu" "vfp"))
 		       (const_string "yes") (const_string "no"))))
 
-;; The VFP "type" attributes differ from those used in the FPA model.
-;; ffarith	Fast floating point insns, e.g. abs, neg, cpy, cmp.
-;; farith	Most arithmetic insns.
-;; fmul		Double precision multiply.
-;; fdivs	Single precision sqrt or division.
-;; fdivd	Double precision sqrt or division.
-;; f_flag	fmstat operation
-;; f_load	Floating point load from memory.
-;; f_store	Floating point store to memory.
-;; f_2_r	Transfer vfp to arm reg.
-;; r_2_f	Transfer arm to vfp reg.
-
 ;; Note, no instruction can issue to the VFP if the core is stalled in the
 ;; first execute state.  We model this by using 1020a_e in the first cycle.
 (define_insn_reservation "v10_ffarith" 5
@@ -296,7 +284,7 @@
 
 (define_insn_reservation "v10_fmul" 6
  (and (eq_attr "vfp10" "yes")
-      (eq_attr "type" "fmul"))
+      (eq_attr "type" "fmuls,fmacs,fmuld,fmacd"))
  "1020a_e+v10_fmac*2")
 
 (define_insn_reservation "v10_fdivs" 18

gcc/config/arm/vfp.md

@@ -26,7 +26,10 @@
 ;; The VFP "type" attributes differ from those used in the FPA model.
 ;; ffarith	Fast floating point insns, e.g. abs, neg, cpy, cmp.
 ;; farith	Most arithmetic insns.
-;; fmul		Double precision multiply.
+;; fmuls	Single precision multiply.
+;; fmuld	Double precision multiply.
+;; fmacs	Single precision multiply-accumulate.
+;; fmacd	Double precision multiply-accumulate.
 ;; fdivs	Single precision sqrt or division.
 ;; fdivd	Double precision sqrt or division.
 ;; f_flag	fmstat operation
@@ -573,7 +576,7 @@
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fmuls%?\\t%0, %1, %2"
   [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "fmuls")]
 )
 
 (define_insn "*muldf3_vfp"
@@ -583,7 +586,7 @@
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fmuld%?\\t%P0, %P1, %P2"
   [(set_attr "predicable" "yes")
-   (set_attr "type" "fmul")]
+   (set_attr "type" "fmuld")]
 )
 
 
@@ -594,7 +597,7 @@
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fnmuls%?\\t%0, %1, %2"
   [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "fmuls")]
 )
 
 (define_insn "*muldf3negdf_vfp"
@@ -604,7 +607,7 @@
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fnmuld%?\\t%P0, %P1, %P2"
   [(set_attr "predicable" "yes")
-   (set_attr "type" "fmul")]
+   (set_attr "type" "fmuld")]
 )
 
 
@@ -619,7 +622,7 @@
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fmacs%?\\t%0, %2, %3"
   [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "fmacs")]
 )
 
 (define_insn "*muldf3adddf_vfp"
@@ -630,7 +633,7 @@
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fmacd%?\\t%P0, %P2, %P3"
   [(set_attr "predicable" "yes")
-   (set_attr "type" "fmul")]
+   (set_attr "type" "fmacd")]
 )
 
 ;; 0 = 1 * 2 - 0
@@ -642,7 +645,7 @@
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fmscs%?\\t%0, %2, %3"
   [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "fmacs")]
 )
 
 (define_insn "*muldf3subdf_vfp"
@@ -653,7 +656,7 @@
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fmscd%?\\t%P0, %P2, %P3"
   [(set_attr "predicable" "yes")
-   (set_attr "type" "fmul")]
+   (set_attr "type" "fmacd")]
 )
 
 ;; 0 = -(1 * 2) + 0
@@ -665,7 +668,7 @@
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fnmacs%?\\t%0, %2, %3"
   [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "fmacs")]
 )
 
 (define_insn "*fmuldf3negdfadddf_vfp"
@@ -676,7 +679,7 @@
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fnmacd%?\\t%P0, %P2, %P3"
   [(set_attr "predicable" "yes")
-   (set_attr "type" "fmul")]
+   (set_attr "type" "fmacd")]
 )
 
 
@@ -690,7 +693,7 @@
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fnmscs%?\\t%0, %2, %3"
   [(set_attr "predicable" "yes")
-   (set_attr "type" "farith")]
+   (set_attr "type" "fmacs")]
 )
 
 (define_insn "*muldf3negdfsubdf_vfp"
@@ -702,7 +705,7 @@
   "TARGET_32BIT && TARGET_HARD_FLOAT && TARGET_VFP"
   "fnmscd%?\\t%P0, %P2, %P3"
   [(set_attr "predicable" "yes")
-   (set_attr "type" "fmul")]
+   (set_attr "type" "fmacd")]
 )
 
 

gcc/config/arm/vfp11.md

@@ -57,12 +57,12 @@
 
 (define_insn_reservation "vfp_farith" 8
  (and (eq_attr "generic_vfp" "yes")
-      (eq_attr "type" "farith,f_cvt"))
+      (eq_attr "type" "farith,f_cvt,fmuls,fmacs"))
  "fmac")
 
 (define_insn_reservation "vfp_fmul" 9
  (and (eq_attr "generic_vfp" "yes")
-      (eq_attr "type" "fmul"))
+      (eq_attr "type" "fmuld,fmacd"))
  "fmac*2")
 
 (define_insn_reservation "vfp_fdivs" 19