* arm.md (tlobits_cbranch): New pattern.

	* arm.h (arm_select_cc_mode): For thumb, only return CC_Nmode if
	testing a single bit.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@110803 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c339897..f3835d8 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2006-02-09  Richard Earnshaw  <richard.earnshaw@arm.com>
+
+       * arm.md (tlobits_cbranch): New pattern.
+       * arm.h (arm_select_cc_mode): For thumb, only return CC_Nmode if
+       testing a single bit.
+

 2006-02-09  Andrew Pinski  <pinskia@physics.uc.edu>
 
        PR tree-opt/26179
 2006-02-09  Andrew Pinski  <pinskia@physics.uc.edu>
 
        PR tree-opt/26179

diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index c7cb82c..4e9ae1b 100644 (file)
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -6748,7 +6748,8 @@ arm_select_cc_mode (enum rtx_code op, rtx x, rtx y)
   if (TARGET_THUMB
       && GET_MODE (x) == SImode
       && (op == EQ || op == NE)
   if (TARGET_THUMB
       && GET_MODE (x) == SImode
       && (op == EQ || op == NE)

-      && (GET_CODE (x) == ZERO_EXTRACT))
+      && GET_CODE (x) == ZERO_EXTRACT
+      && XEXP (x, 1) == const1_rtx)

     return CC_Nmode;
 
   /* An operation that sets the condition codes as a side-effect, the
     return CC_Nmode;
 
   /* An operation that sets the condition codes as a side-effect, the

diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 3853afc..53b633d 100644 (file)
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -6028,6 +6028,50 @@
                (const_int 8))))]
 )
   
                (const_int 8))))]
 )
   

+(define_insn "*tlobits_cbranch"
+  [(set (pc)
+       (if_then_else
+        (match_operator 0 "equality_operator"
+         [(zero_extract:SI (match_operand:SI 1 "s_register_operand" "l")
+                           (match_operand:SI 2 "const_int_operand" "i")
+                           (const_int 0))
+          (const_int 0)])
+        (label_ref (match_operand 3 "" ""))
+        (pc)))
+   (clobber (match_scratch:SI 4 "=l"))]
+  "TARGET_THUMB"
+  "*
+  {
+  rtx op[3];
+  op[0] = operands[4];
+  op[1] = operands[1];
+  op[2] = GEN_INT (32 - INTVAL (operands[2]));
+
+  output_asm_insn (\"lsl\\t%0, %1, %2\", op);
+  switch (get_attr_length (insn))
+    {
+    case 4:  return \"b%d0\\t%l3\";
+    case 6:  return \"b%D0\\t.LCB%=\;b\\t%l3\\t%@long jump\\n.LCB%=:\";
+    default: return \"b%D0\\t.LCB%=\;bl\\t%l3\\t%@far jump\\n.LCB%=:\";
+    }
+  }"
+  [(set (attr "far_jump")
+        (if_then_else
+           (eq_attr "length" "8")
+           (const_string "yes")
+            (const_string "no")))
+   (set (attr "length") 
+        (if_then_else
+           (and (ge (minus (match_dup 3) (pc)) (const_int -250))
+                (le (minus (match_dup 3) (pc)) (const_int 256)))
+           (const_int 4)
+           (if_then_else
+               (and (ge (minus (match_dup 3) (pc)) (const_int -2040))
+                    (le (minus (match_dup 3) (pc)) (const_int 2048)))
+               (const_int 6)
+               (const_int 8))))]
+)
+  

 (define_insn "*tstsi3_cbranch"
   [(set (pc)
        (if_then_else
 (define_insn "*tstsi3_cbranch"
   [(set (pc)
        (if_then_else