[PATCH, AArch64 2/6] aarch64: Add mulditi3 and umulditi3 patterns

Richard Henderson rth@redhat.com
Wed Jan 8 18:14:00 GMT 2014


	* config/aarch64/aarch64.md (<su_optab>mulditi3): New expander.
---
 gcc/config/aarch64/aarch64.md | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/gcc/config/aarch64/aarch64.md b/gcc/config/aarch64/aarch64.md
index c4acdfc..0b3943d 100644
--- a/gcc/config/aarch64/aarch64.md
+++ b/gcc/config/aarch64/aarch64.md
@@ -2078,6 +2078,23 @@
   [(set_attr "type" "<su>mull")]
 )
 
+(define_expand "<su_optab>mulditi3"
+  [(set (match_operand:TI 0 "register_operand")
+	(mult:TI (ANY_EXTEND:TI (match_operand:DI 1 "register_operand"))
+		 (ANY_EXTEND:TI (match_operand:DI 2 "register_operand"))))]
+  ""
+{
+  rtx low = gen_reg_rtx (DImode);
+  emit_insn (gen_muldi3 (low, operands[1], operands[2]));
+
+  rtx high = gen_reg_rtx (DImode);
+  emit_insn (gen_<su>muldi3_highpart (high, operands[1], operands[2]));
+
+  emit_move_insn (gen_lowpart (DImode, operands[0]), low);
+  emit_move_insn (gen_highpart (DImode, operands[0]), high);
+  DONE;
+})
+
 (define_insn "<su>muldi3_highpart"
   [(set (match_operand:DI 0 "register_operand" "=r")
 	(truncate:DI
-- 
1.8.4.2



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