* config/rs6000/rs6000.md (eq): Convert to define_insn_and_split.

        * config/rs6000/predicates.md (scc_eq_operand): New.


git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@100812 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 59 insertions, 134 deletions

diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index 9cd1350782d..2f3331b2c9c 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -11468,153 +11468,78 @@
 ;; otherwise won't accept constants.  We do this because it is faster than
 ;; the cmp/mfcr sequence we would otherwise generate.
 
-(define_insn ""
-  [(set (match_operand:SI 0 "gpc_reg_operand" "=r,r,r,r,r")
-	(eq:SI (match_operand:SI 1 "gpc_reg_operand" "%r,r,r,r,r")
-	       (match_operand:SI 2 "reg_or_cint_operand" "r,O,K,L,I")))
-   (clobber (match_scratch:SI 3 "=r,X,r,r,r"))]
-  "TARGET_32BIT"
-  "@
-   xor %0,%1,%2\;{sfi|subfic} %3,%0,0\;{ae|adde} %0,%3,%0
-   #
-   {xoril|xori} %0,%1,%b2\;{sfi|subfic} %3,%0,0\;{ae|adde} %0,%3,%0
-   {xoriu|xoris} %0,%1,%u2\;{sfi|subfic} %3,%0,0\;{ae|adde} %0,%3,%0
-   {sfi|subfic} %0,%1,%2\;{sfi|subfic} %3,%0,0\;{ae|adde} %0,%3,%0"
-  [(set_attr "type" "three,two,three,three,three")
-   (set_attr "length" "12,8,12,12,12")])
+(define_mode_attr scc_eq_op2 [(SI "rKLI")
+			      (DI "rKJI")])
 
-(define_insn ""
-  [(set (match_operand:DI 0 "gpc_reg_operand" "=r,r,r,r,r")
-	(eq:DI (match_operand:DI 1 "gpc_reg_operand" "%r,r,r,r,r")
-	       (match_operand:DI 2 "reg_or_cint_operand" "r,O,K,J,I")))
-   (clobber (match_scratch:DI 3 "=r,X,r,r,r"))]
-  "TARGET_64BIT"
-  "@
-   xor %0,%1,%2\;subfic %3,%0,0\;adde %0,%3,%0
-   #
-   xori %0,%1,%b2\;subfic %3,%0,0\;adde %0,%3,%0
-   xoris %0,%1,%u2\;subfic %3,%0,0\;adde %0,%3,%0
-   subfic %0,%1,%2\;subfic %3,%0,0\;adde %0,%3,%0"
-  [(set_attr "type" "three,two,three,three,three")
-   (set_attr "length" "12,8,12,12,12")])
-
-(define_split
-  [(set (match_operand:GPR 0 "gpc_reg_operand" "")
-	(eq:GPR (match_operand:GPR 1 "gpc_reg_operand" "")
-	       (match_operand:GPR 2 "zero_constant" "")))
-   (clobber (match_scratch:GPR 3 ""))]
+(define_insn_and_split "*eq<mode>"
+  [(set (match_operand:GPR 0 "gpc_reg_operand" "=r")
+	(eq:GPR (match_operand:GPR 1 "gpc_reg_operand" "r")
+		(match_operand:GPR 2 "scc_eq_operand" "<scc_eq_op2>")))
+   (clobber (match_scratch:GPR 3 "=r"))
+   (clobber (match_scratch:GPR 4 "=r"))]
   ""
-  [(set (match_dup 0)
-	(clz:GPR (match_dup 1)))
+  "#"
+  "reload_completed"
+  [(set (match_dup 3)
+	(clz:GPR (match_dup 4)))
    (set (match_dup 0)
-	(lshiftrt:GPR (match_dup 0) (match_dup 4)))]
+	(lshiftrt:GPR (match_dup 3) (match_dup 5)))]
   {
-    operands[4] = GEN_INT (exact_log2 (GET_MODE_BITSIZE (<MODE>mode)));
-  })
-
-(define_insn ""
-  [(set (match_operand:CC 4 "cc_reg_operand" "=x,x,x,x,x,?y,?y,?y,?y,?y")
-	(compare:CC
-	 (eq:SI (match_operand:SI 1 "gpc_reg_operand" "%r,r,r,r,r,r,r,r,r,r")
-		(match_operand:SI 2 "reg_or_cint_operand" "r,O,K,L,I,r,O,K,L,I"))
-	 (const_int 0)))
-   (set (match_operand:SI 0 "gpc_reg_operand" "=r,r,r,r,r,r,r,r,r,r")
-	(eq:SI (match_dup 1) (match_dup 2)))
-   (clobber (match_scratch:SI 3 "=r,X,r,r,r,r,X,r,r,r"))]
-  "TARGET_32BIT"
-  "@
-   xor %0,%1,%2\;{sfi|subfic} %3,%0,0\;{ae.|adde.} %0,%3,%0
-   #
-   {xoril|xori} %0,%1,%b2\;{sfi|subfic} %3,%0,0\;{ae.|adde.} %0,%3,%0
-   {xoriu|xoris} %0,%1,%u2\;{sfi|subfic} %3,%0,0\;{ae.|adde.} %0,%3,%0
-   {sfi|subfic} %0,%1,%2\;{sfi|subfic} %3,%0,0\;{ae.|adde.} %0,%3,%0
-   #
-   #
-   #
-   #
-   #"
-  [(set_attr "type" "compare")
-   (set_attr "length" "12,8,12,12,12,16,12,16,16,16")])
-
-(define_split
-  [(set (match_operand:CC 4 "cc_reg_not_cr0_operand" "")
-	(compare:CC
-	 (eq:SI (match_operand:SI 1 "gpc_reg_operand" "")
-		(match_operand:SI 2 "reg_or_cint_operand" ""))
-	 (const_int 0)))
-   (set (match_operand:SI 0 "gpc_reg_operand" "")
-	(eq:SI (match_dup 1) (match_dup 2)))
-   (clobber (match_scratch:SI 3 ""))]
-  "TARGET_32BIT && reload_completed"
-  [(parallel [(set (match_dup 0)
-	(eq:SI (match_dup 1) (match_dup 2)))
-   (clobber (match_dup 3))])
-   (set (match_dup 4)
-	(compare:CC (match_dup 0)
-		    (const_int 0)))]
-  "")
-
-(define_insn ""
-  [(set (match_operand:CC 4 "cc_reg_operand" "=x,x,x,x,x,?y,?y,?y,?y,?y")
-	(compare:CC
-	 (eq:DI (match_operand:DI 1 "gpc_reg_operand" "%r,r,r,r,r,r,r,r,r,r")
-		(match_operand:DI 2 "reg_or_cint_operand" "r,O,K,J,I,r,O,K,J,I"))
-	 (const_int 0)))
-   (set (match_operand:DI 0 "gpc_reg_operand" "=r,r,r,r,r,r,r,r,r,r")
-	(eq:DI (match_dup 1) (match_dup 2)))
-   (clobber (match_scratch:DI 3 "=r,X,r,r,r,r,X,r,r,r"))]
-  "TARGET_64BIT"
-  "@
-   xor %0,%1,%2\;subfic %3,%0,0\;adde. %0,%3,%0
-   #
-   xori %0,%1,%b2\;subfic %3,%0,0\;adde. %0,%3,%0
-   xoris %0,%1,%u2\;subfic %3,%0,0\;adde. %0,%3,%0
-   subfic %0,%1,%2\;subfic %3,%0,0\;adde. %0,%3,%0
-   #
-   #
-   #
-   #
-   #"
-  [(set_attr "type" "compare")
-   (set_attr "length" "12,8,12,12,12,16,12,16,16,16")])
+    if (GET_CODE (operands[2]) != CONST_INT || INTVAL (operands[2]) != 0)
+      {
+	if (logical_operand (operands[2], <MODE>mode))
+	  emit_insn (gen_rtx_SET (VOIDmode, operands[4],
+				  gen_rtx_XOR (<MODE>mode,
+					       operands[1], operands[2])));
+	else
+	  emit_insn (gen_rtx_SET (VOIDmode, operands[4],
+				  gen_rtx_PLUS (<MODE>mode, operands[1],
+						negate_rtx (<MODE>mode,
+							    operands[2]))));
+      }
+    else
+      operands[4] = operands[1];
 
-(define_split
-  [(set (match_operand:CC 4 "cc_reg_not_cr0_operand" "")
-	(compare:CC
-	 (eq:DI (match_operand:DI 1 "gpc_reg_operand" "")
-		(match_operand:DI 2 "reg_or_cint_operand" ""))
-	 (const_int 0)))
-   (set (match_operand:DI 0 "gpc_reg_operand" "")
-	(eq:DI (match_dup 1) (match_dup 2)))
-   (clobber (match_scratch:DI 3 ""))]
-  "TARGET_64BIT && reload_completed"
-  [(parallel [(set (match_dup 0)
-	(eq:DI (match_dup 1) (match_dup 2)))
-   (clobber (match_dup 3))])
-   (set (match_dup 4)
-	(compare:CC (match_dup 0)
-		    (const_int 0)))]
-  "")
+    operands[5] = GEN_INT (exact_log2 (GET_MODE_BITSIZE (<MODE>mode)));
+  })
 
-(define_split
-  [(set (match_operand:CC 4 "cc_reg_operand" "")
+(define_insn_and_split "*eq<mode>_compare"
+  [(set (match_operand:CC 5 "cc_reg_operand" "=y")
 	(compare:CC
-	 (eq:GPR (match_operand:GPR 1 "gpc_reg_operand" "")
-		 (match_operand:GPR 2 "zero_constant" ""))
+	 (eq:GPR (match_operand:GPR 1 "gpc_reg_operand" "=r")
+		 (match_operand:GPR 2 "scc_eq_operand" "<scc_eq_op2>"))
 	 (const_int 0)))
-   (set (match_operand:GPR 0 "gpc_reg_operand" "")
+   (set (match_operand:GPR 0 "gpc_reg_operand" "=r")
 	(eq:GPR (match_dup 1) (match_dup 2)))
-   (clobber (match_scratch:GPR 3 ""))]
+   (clobber (match_scratch:GPR 3 "=r"))
+   (clobber (match_scratch:GPR 4 "=r"))]
   ""
-  [(set (match_dup 0)
-	(clz:GPR (match_dup 1)))
-   (parallel [(set (match_dup 4)
-		   (compare:CC (lshiftrt:GPR (match_dup 0) (match_dup 5))
+  "#"
+  "reload_completed"
+  [(set (match_dup 3)
+	(clz:GPR (match_dup 4)))
+   (parallel [(set (match_dup 5)
+		   (compare:CC (lshiftrt:GPR (match_dup 3) (match_dup 6))
 			       (const_int 0)))
 	      (set (match_dup 0)
-		   (lshiftrt:GPR (match_dup 0) (match_dup 5)))])]
+		   (lshiftrt:GPR (match_dup 3) (match_dup 6)))])]
   {
-    operands[5] = GEN_INT (exact_log2 (GET_MODE_BITSIZE (<MODE>mode)));
+    if (GET_CODE (operands[2]) != CONST_INT || INTVAL (operands[2]) != 0)
+      {
+	if (logical_operand (operands[2], <MODE>mode))
+	  emit_insn (gen_rtx_SET (VOIDmode, operands[4],
+				  gen_rtx_XOR (<MODE>mode,
+					       operands[1], operands[2])));
+	else
+	  emit_insn (gen_rtx_SET (VOIDmode, operands[4],
+				  gen_rtx_PLUS (<MODE>mode, operands[1],
+						negate_rtx (<MODE>mode,
+							    operands[2]))));
+      }
+    else
+      operands[4] = operands[1];
+
+    operands[6] = GEN_INT (exact_log2 (GET_MODE_BITSIZE (<MODE>mode)));
   })
 
 ;; We have insns of the form shown by the first define_insn below.  If