ia64.md (UNSPEC_SHRP): New.

        * ia64.md (UNSPEC_SHRP): New.
        (dshift_count_operand): New.
        (ashrti3, ashrti3_internal, lshrti3, lshrti3_internal, shrp): New.
        * ia64.c (rtx_needs_barrier): Handle UNSPEC_SHRP.

From-SVN: r90149

3 files changed, 104 insertions, 0 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 749e21d..5cf3086 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2004-11-05  Richard Henderson  <rth@redhat.com>
+
+	* ia64.md (UNSPEC_SHRP): New.
+	(dshift_count_operand): New.
+	(ashrti3, ashrti3_internal, lshrti3, lshrti3_internal, shrp): New.
+	* ia64.c (rtx_needs_barrier): Handle UNSPEC_SHRP.
+
 2004-11-05  Joseph S. Myers  <joseph@codesourcery.com>
 
 	* c-typeck.c (output_init_element): Return early if value is
diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c
index 5f8dcaa..0b65686 100644
--- a/gcc/config/ia64/ia64.c
+++ b/gcc/config/ia64/ia64.c
@@ -4899,6 +4899,7 @@ rtx_needs_barrier (rtx x, struct reg_flags flags, int pred)
 	  break;
 
 	case UNSPEC_FR_RECIP_APPROX:
+	case UNSPEC_SHRP:
 	  need_barrier = rtx_needs_barrier (XVECEXP (x, 0, 0), flags, pred);
 	  need_barrier |= rtx_needs_barrier (XVECEXP (x, 0, 1), flags, pred);
 	  break;
diff --git a/gcc/config/ia64/ia64.md b/gcc/config/ia64/ia64.md
index 31f14bb..4a01ba4 100644
--- a/gcc/config/ia64/ia64.md
+++ b/gcc/config/ia64/ia64.md
@@ -77,6 +77,7 @@
    (UNSPEC_RET_ADDR		26)
    (UNSPEC_SETF_EXP             27)
    (UNSPEC_FR_SQRT_RECIP_APPROX 28)
+   (UNSPEC_SHRP			29)
   ])
 
 (define_constants
@@ -335,6 +336,11 @@
        (and (match_code "const_int")
 	    (match_test "CONST_OK_FOR_J (INTVAL (op))"))))
 
+;; True if OP is a 7 bit immediate operand.
+(define_predicate "dshift_count_operand"
+  (and (match_code "const_int")
+       (match_test "INTVAL (op) >= 0 && INTVAL (op) < 128")))
+
 ;; True if OP is a 6 bit immediate operand.
 (define_predicate "shift_count_operand"
   (and (match_code "const_int")
@@ -4654,6 +4660,96 @@
 
 ;; ::::::::::::::::::::
 ;; ::
+;; :: 128 bit Integer Shifts and Rotates
+;; ::
+;; ::::::::::::::::::::
+
+(define_expand "ashrti3"
+  [(set (match_operand:TI 0 "gr_register_operand" "")
+	(ashiftrt:TI (match_operand:TI 1 "gr_register_operand" "")
+		     (match_operand:DI 2 "nonmemory_operand" "")))]
+  ""
+{
+  if (!dshift_count_operand (operands[2], DImode))
+    FAIL;
+})
+
+(define_insn_and_split "*ashrti3_internal"
+  [(set (match_operand:TI 0 "gr_register_operand" "=r")
+	(ashiftrt:TI (match_operand:TI 1 "gr_register_operand" "r")
+		     (match_operand:DI 2 "dshift_count_operand" "n")))]
+  ""
+  "#"
+  "reload_completed"
+  [(const_int 0)]
+{
+  HOST_WIDE_INT shift = INTVAL (operands[2]);
+  rtx lo = gen_lowpart (DImode, operands[1]);
+  rtx hi = gen_highpart (DImode, operands[1]);
+  rtx shiftlo = GEN_INT (shift & 63);
+
+  if (shift & 64)
+    {
+      emit_insn (gen_ashrdi3 (lo, hi, shiftlo));
+      emit_insn (gen_ashrdi3 (hi, hi, GEN_INT (63)));
+    }
+  else
+    {
+      emit_insn (gen_shrp (lo, hi, lo, shiftlo));
+      emit_insn (gen_ashrdi3 (hi, hi, shiftlo));
+    }
+  DONE;
+})
+
+(define_expand "lshrti3"
+  [(set (match_operand:TI 0 "gr_register_operand" "")
+        (lshiftrt:TI (match_operand:TI 1 "gr_register_operand" "")
+                     (match_operand:DI 2 "nonmemory_operand" "")))]
+  ""
+{ 
+  if (!dshift_count_operand (operands[2], DImode))
+    FAIL;
+}) 
+
+(define_insn_and_split "*lshrti3_internal"
+  [(set (match_operand:TI 0 "gr_register_operand" "=r")
+	(lshiftrt:TI (match_operand:TI 1 "gr_register_operand" "r")
+		     (match_operand:DI 2 "dshift_count_operand" "n")))]
+  ""
+  "#"
+  "reload_completed"
+  [(const_int 0)]
+{
+  HOST_WIDE_INT shift = INTVAL (operands[2]);
+  rtx lo = gen_lowpart (DImode, operands[1]);
+  rtx hi = gen_highpart (DImode, operands[1]);
+  rtx shiftlo = GEN_INT (shift & 63);
+
+  if (shift & 64)
+    {
+      emit_insn (gen_lshrdi3 (lo, hi, shiftlo));
+      emit_move_insn (hi, const0_rtx);
+    }
+  else
+    {
+      emit_insn (gen_shrp (lo, hi, lo, shiftlo));
+      emit_insn (gen_lshrdi3 (hi, hi, shiftlo));
+    }
+  DONE;
+})
+
+(define_insn "shrp"
+  [(set (match_operand:DI 0 "gr_register_operand" "=r")
+	(unspec:DI [(match_operand:DI 1 "gr_register_operand" "r")
+		    (match_operand:DI 2 "gr_register_operand" "r")
+		    (match_operand:DI 3 "shift_count_operand" "M")]
+		   UNSPEC_SHRP))]
+  ""
+  "shrp %0 = %1, %2, %3"
+  [(set_attr "itanium_class" "ishf")])
+
+;; ::::::::::::::::::::
+;; ::
 ;; :: 32 bit Integer Logical operations
 ;; ::
 ;; ::::::::::::::::::::