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path: root/packages/gcc/gcc-4.2.3/arm-crunch-compare.patch
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diff -urN gcc-4.1.2/gcc/config/arm/arm.c ../../../../old-tmp/work/arm-oabi-angstrom-linux/gcc-cross-4.1.2-backup/gcc-4.1.2/gcc/config/arm/arm.c
--- gcc-4.1.2/gcc/config/arm/arm.c	2007-05-31 12:39:48.000000000 +1000
+++ gcc-4.1.2/gcc/config/arm/arm.c	2007-05-29 17:19:38.000000000 +1000
@@ -11427,26 +11427,53 @@
       /* These encodings assume that AC=1 in the FPA system control
 	 byte.  This allows us to handle all cases except UNEQ and
 	 LTGT.  */
-      switch (comp_code)
-	{
-	case GE: return ARM_GE;
-	case GT: return ARM_GT;
-	case LE: return ARM_LS;
-	case LT: return ARM_MI;
-	case NE: return ARM_NE;
-	case EQ: return ARM_EQ;
-	case ORDERED: return ARM_VC;
-	case UNORDERED: return ARM_VS;
-	case UNLT: return ARM_LT;
-	case UNLE: return ARM_LE;
-	case UNGT: return ARM_HI;
-	case UNGE: return ARM_PL;
-	  /* UNEQ and LTGT do not have a representation.  */
-	case UNEQ: /* Fall through.  */
-	case LTGT: /* Fall through.  */
-	default: gcc_unreachable ();
-	}
-
+    if (!TARGET_MAVERICK)
+    {
+          switch (comp_code)
+    	{
+	    case GE: return ARM_GE;
+    	case GT: return ARM_GT;
+    	case LE: return ARM_LS;
+	    case LT: return ARM_MI;
+    	case NE: return ARM_NE;
+    	case EQ: return ARM_EQ;
+    	case ORDERED: return ARM_VC;
+    	case UNORDERED: return ARM_VS;
+    	case UNLT: return ARM_LT;
+    	case UNLE: return ARM_LE;
+    	case UNGT: return ARM_HI;
+    	case UNGE: return ARM_PL;
+    	  /* UNEQ and LTGT do not have a representation.  */
+	    case UNEQ: /* Fall through.  */
+    	case LTGT: /* Fall through.  */
+    	default: gcc_unreachable ();
+        }
+    }
+    else
+    {
+        /* CIRRUS */
+          switch (comp_code)
+        {
+#if 1
+        case GT: return ARM_VS;
+        case LE: return ARM_LE;
+        case LT: return ARM_LT;
+        case NE: return ARM_NE;
+        case EQ: return ARM_EQ;
+        case UNLE: return ARM_VC;
+        case UNGT: return ARM_GT;
+        case UNGE: return ARM_GE;
+        case UNEQ: return ARM_PL;
+        case LTGT: return ARM_MI;
+        /* These do not have a representation. */
+        case GE: /* Fall through.  -UNGE wrong atm */
+        case UNLT: /* Fall through. -LT wrong atm */
+        case ORDERED: /* Fall through.  -AL wrong atm */
+        case UNORDERED: /* Fall through. -AL wrong atm */
+#endif
+        default: gcc_unreachable (); 
+    	}
+    }
     case CC_SWPmode:
       switch (comp_code)
 	{
diff -urN gcc-4.1.2/gcc/config/arm/arm.md ../../../../old-tmp/work/arm-oabi-angstrom-linux/gcc-cross-4.1.2-backup/gcc-4.1.2/gcc/config/arm/arm.md
--- gcc-4.1.2/gcc/config/arm/arm.md	2007-05-31 12:39:48.000000000 +1000
+++ gcc-4.1.2/gcc/config/arm/arm.md	2007-05-29 15:17:18.000000000 +1000
@@ -6952,10 +6952,11 @@
   "operands[1] = arm_gen_compare_reg (LE, arm_compare_op0, arm_compare_op1);"
 )
 
+;broken on cirrus
 (define_expand "bge"
   [(set (pc)
 	(if_then_else (ge (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM"
+  "TARGET_ARM" ;; && !(TARGET_HARD_FLOAT && TARGET_MAVERICK)
   "operands[1] = arm_gen_compare_reg (GE, arm_compare_op0, arm_compare_op1);"
@@ -6988,6 +6989,7 @@
   "operands[1] = arm_gen_compare_reg (LEU, arm_compare_op0, arm_compare_op1);"
 )
 
+; broken on cirrus?
 (define_expand "bgeu"
   [(set (pc)
 	(if_then_else (geu (match_dup 1) (const_int 0))
@@ -7031,14 +7033,15 @@
 	(if_then_else (ungt (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP || TARGET_MAVERICK)"
   "operands[1] = arm_gen_compare_reg (UNGT, arm_compare_op0, arm_compare_op1);"
 )
 
-(define_expand "bunlt"
+; broken for cirrus
+(define_expand "bunlt"
   [(set (pc)
 	(if_then_else (unlt (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP || TARGET_MAVERICK)"
   "operands[1] = arm_gen_compare_reg (UNLT, arm_compare_op0, arm_compare_op1);"
@@ -7049,7 +7052,7 @@
 	(if_then_else (unge (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP || TARGET_MAVERICK)"
   "operands[1] = arm_gen_compare_reg (UNGE, arm_compare_op0, arm_compare_op1);"
 )
 
@@ -7058,7 +7061,7 @@
 	(if_then_else (unle (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP || TARGET_MAVERICK)"
   "operands[1] = arm_gen_compare_reg (UNLE, arm_compare_op0, arm_compare_op1);"
 )
 
@@ -7069,7 +7072,7 @@
 	(if_then_else (uneq (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)" ;; || TARGET_MAVERICK)"
   "operands[1] = arm_gen_compare_reg (UNEQ, arm_compare_op0, arm_compare_op1);"
 )
 
@@ -7078,7 +7081,7 @@
 	(if_then_else (ltgt (match_dup 1) (const_int 0))
 		      (label_ref (match_operand 0 "" ""))
 		      (pc)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)" ;; || TARGET_MAVERICK)"
   "operands[1] = arm_gen_compare_reg (LTGT, arm_compare_op0, arm_compare_op1);"
 )
 
@@ -7086,7 +7089,7 @@
 ;; Patterns to match conditional branch insns.
 ;;
 
-; Special pattern to match UNEQ.
+; Special pattern to match UNEQ for FPA and VFP.
 (define_insn "*arm_buneq"
   [(set (pc)
 	(if_then_else (uneq (match_operand 1 "cc_register" "") (const_int 0))
@@ -7102,7 +7105,7 @@
    (set_attr "length" "8")]
 )
 
-; Special pattern to match LTGT.
+; Special pattern to match LTGT for FPA and VFP.
 (define_insn "*arm_bltgt"
   [(set (pc)
 	(if_then_else (ltgt (match_operand 1 "cc_register" "") (const_int 0))
@@ -7118,6 +7121,38 @@
    (set_attr "length" "8")]
 )
 
+; Special pattern to match GE for MAVERICK.
+(define_insn "*arm_bge"
+  [(set (pc)
+	(if_then_else (ge (match_operand:CCFP 1 "cc_register" "") (const_int 0))
+		      (label_ref (match_operand 0 "" ""))
+		      (pc)))]
+  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_MAVERICK"
+  "*
+  gcc_assert (!arm_ccfsm_state);
+
+  return \"beq\\t%l0\;bvs\\t%l0\"; 
+  "
+  [(set_attr "conds" "jump_clob")
+   (set_attr "length" "8")]
+)
+
+; Special pattern to match UNLT for MAVERICK - UGLY since we need to test for Z=0 && V=0.
+(define_insn "*arm_bunlt"
+  [(set (pc)
+	(if_then_else (unlt (match_operand:CCFP 1 "cc_register" "") (const_int 0))
+		      (label_ref (match_operand 0 "" ""))
+		      (pc)))]
+  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_MAVERICK"
+  "*
+  gcc_assert (!arm_ccfsm_state);
+
+  return \"beq\\t.+12\;bvs\\t.+8\;b\\t%l0\";
+  "
+  [(set_attr "conds" "jump_clob")
+   (set_attr "length" "12")]
+)
+
 (define_insn "*arm_cond_branch"
   [(set (pc)
 	(if_then_else (match_operator 1 "arm_comparison_operator"
@@ -7137,7 +7172,7 @@
    (set_attr "type" "branch")]
 )
 
-; Special pattern to match reversed UNEQ.
+; Special pattern to match reversed UNEQ for FPA and VFP.
 (define_insn "*arm_buneq_reversed"
   [(set (pc)
 	(if_then_else (uneq (match_operand 1 "cc_register" "") (const_int 0))
@@ -7153,7 +7188,7 @@
    (set_attr "length" "8")]
 )
 
-; Special pattern to match reversed LTGT.
+; Special pattern to match reversed LTGT for FPA and VFP.
 (define_insn "*arm_bltgt_reversed"
   [(set (pc)
 	(if_then_else (ltgt (match_operand 1 "cc_register" "") (const_int 0))
@@ -7169,6 +7204,39 @@
    (set_attr "length" "8")]
 )
 
+; Special pattern to match reversed GE for MAVERICK - UGLY since we need to tst for Z=0 && N=0.
+(define_insn "*arm_bge_reversed"
+  [(set (pc)
+	(if_then_else (ge (match_operand:CCFP 1 "cc_register" "") (const_int 0))
+              (pc)
+		      (label_ref (match_operand 0 "" ""))))]
+  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_MAVERICK"
+  "*
+  gcc_assert (!arm_ccfsm_state);
+
+  return \"beq\\t.+12\;bvs\\t.+8\;b\\t%l0\";
+  "
+  [(set_attr "conds" "jump_clob")
+   (set_attr "length" "12")]
+)
+
+; Special pattern to match reversed UNLT for MAVERICK.
+(define_insn "*arm_bunlt_reversed"
+  [(set (pc)
+	(if_then_else (unlt (match_operand:CCFP 1 "cc_register" "") (const_int 0))
+              (pc)
+		      (label_ref (match_operand 0 "" ""))))]
+  "TARGET_ARM && TARGET_HARD_FLOAT && TARGET_MAVERICK"
+  "*
+  gcc_assert (!arm_ccfsm_state);
+
+  return \"beq\\t%l0\;bvs\\t%l0\";
+  "
+  [(set_attr "conds" "jump_clob")
+   (set_attr "length" "8")]
+)
+
+
 (define_insn "*arm_cond_branch_reversed"
   [(set (pc)
 	(if_then_else (match_operator 1 "arm_comparison_operator"
@@ -7220,8 +7288,9 @@
   "operands[1] = arm_gen_compare_reg (LE, arm_compare_op0, arm_compare_op1);"
 )
 
+;; broken for cirrus - definitely
 (define_expand "sge"
   [(set (match_operand:SI 0 "s_register_operand" "")
 	(ge:SI (match_dup 1) (const_int 0)))]
-  "TARGET_ARM"
+  "TARGET_ARM && !(TARGET_HARD_FLOAT && TARGET_MAVERICK)"
   "operands[1] = arm_gen_compare_reg (GE, arm_compare_op0, arm_compare_op1);"
@@ -7227,6 +7296,14 @@
   "operands[1] = arm_gen_compare_reg (GE, arm_compare_op0, arm_compare_op1);"
 )
 
+;;; DO NOT add patterns for SGE these can not be represented with MAVERICK
+; (define_expand "sge"
+;   [(set (match_operand:SI 0 "s_register_operand" "")
+; 	(ge:SI (match_dup 1) (const_int 0)))]
+;   "TARGET_ARM && (TARGET_MAVERICK)"
+;   "gcc_unreachable ();"
+; )
+
 (define_expand "slt"
   [(set (match_operand:SI 0 "s_register_operand" "")
 	(lt:SI (match_dup 1) (const_int 0)))]
@@ -7248,6 +7325,7 @@
   "operands[1] = arm_gen_compare_reg (LEU, arm_compare_op0, arm_compare_op1);"
 )
 
+;; broken for cirrus - maybe
 (define_expand "sgeu"
   [(set (match_operand:SI 0 "s_register_operand" "")
 	(geu:SI (match_dup 1) (const_int 0)))]
@@ -7255,6 +7333,14 @@
   "operands[1] = arm_gen_compare_reg (GEU, arm_compare_op0, arm_compare_op1);"
 )
 
+;;; DO NOT add patterns for SGEU these may not be represented with MAVERICK?
+; (define_expand "sgeu"
+;  [(set (match_operand:SI 0 "s_register_operand" "")
+; 	(ge:SI (match_dup 1) (const_int 0)))]
+;   "TARGET_ARM && (TARGET_MAVERICK)"
+;   "gcc_unreachable ();"
+; )
+
 (define_expand "sltu"
   [(set (match_operand:SI 0 "s_register_operand" "")
 	(ltu:SI (match_dup 1) (const_int 0)))]
@@ -7281,7 +7367,7 @@
 (define_expand "sungt"
   [(set (match_operand:SI 0 "s_register_operand" "")
 	(ungt:SI (match_dup 1) (const_int 0)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP || TARGET_MAVERICK)"
   "operands[1] = arm_gen_compare_reg (UNGT, arm_compare_op0,
 				      arm_compare_op1);"
 )
@@ -7289,23 +7375,32 @@
 (define_expand "sunge"
   [(set (match_operand:SI 0 "s_register_operand" "")
 	(unge:SI (match_dup 1) (const_int 0)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP || TARGET_MAVERICK)"
   "operands[1] = arm_gen_compare_reg (UNGE, arm_compare_op0,
 				      arm_compare_op1);"
 )
 
+; broken for cirrus
 (define_expand "sunlt"
   [(set (match_operand:SI 0 "s_register_operand" "")
 	(unlt:SI (match_dup 1) (const_int 0)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
   "operands[1] = arm_gen_compare_reg (UNLT, arm_compare_op0,
 				      arm_compare_op1);"
 )
 
+;;; DO NOT add patterns for SUNLT these can't be represented with MAVERICK
+; (define_expand "sunlt"
+;   [(set (match_operand:SI 0 "s_register_operand" "")
+; 	(unlt:SI (match_dup 1) (const_int 0)))]
+;   "TARGET_ARM && (TARGET_MAVERICK)"
+;   "gcc_unreachable ();"
+; )
+
 (define_expand "sunle"
   [(set (match_operand:SI 0 "s_register_operand" "")
 	(unle:SI (match_dup 1) (const_int 0)))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP || TARGET_MAVERICK)"
   "operands[1] = arm_gen_compare_reg (UNLE, arm_compare_op0,
 				      arm_compare_op1);"
 )
@@ -7371,7 +7466,7 @@
     enum rtx_code code = GET_CODE (operands[1]);
     rtx ccreg;
 
-    if (code == UNEQ || code == LTGT)
+    if ((code == UNEQ || code == LTGT) || (TARGET_MAVERICK && (code == GE || code == UNLT || code == ORDERED || code == UNORDERED)))
       FAIL;
 
     ccreg = arm_gen_compare_reg (code, arm_compare_op0, arm_compare_op1);
@@ -7390,7 +7485,8 @@
     enum rtx_code code = GET_CODE (operands[1]);
     rtx ccreg;
 
-    if (code == UNEQ || code == LTGT)
+    if ((code == UNEQ || code == LTGT) || (TARGET_MAVERICK && (code == GE || code == UNLT || code == ORDERED || code == UNORDERED)))
+ 
       FAIL;
 
     /* When compiling for SOFT_FLOAT, ensure both arms are in registers. 
@@ -7409,13 +7505,13 @@
 	(if_then_else:DF (match_operand 1 "arm_comparison_operator" "")
 			 (match_operand:DF 2 "s_register_operand" "")
 			 (match_operand:DF 3 "arm_float_add_operand" "")))]
-  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP)"
+  "TARGET_ARM && TARGET_HARD_FLOAT && (TARGET_FPA || TARGET_VFP || TARGET_MAVERICK)"
   "
   {
     enum rtx_code code = GET_CODE (operands[1]);
     rtx ccreg;
 
-    if (code == UNEQ || code == LTGT)
+    if ((code == UNEQ || code == LTGT) || (TARGET_MAVERICK && (code==GE || code == UNLT || code == ORDERED || code == UNORDERED)))
       FAIL;
 
     ccreg = arm_gen_compare_reg (code, arm_compare_op0, arm_compare_op1);