From: Roger Sayle <roger@eyesopen.com>
Date: Tue, 23 Sep 2003 15:49:53 +0000 (+0000)
Subject: jcf-write.c (generate_bytecode_insns): Optimize binary operations with equal operands... 
X-Git-Tag: releases/gcc-3.4.0~3576
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=87750fef007105152e570dc153ef04df5445ddc4;p=thirdparty%2Fgcc.git

jcf-write.c (generate_bytecode_insns): Optimize binary operations with equal operands without side-effects.


	* jcf-write.c (generate_bytecode_insns): Optimize binary operations
	with equal operands without side-effects.

From-SVN: r71684
---

diff --git a/gcc/java/ChangeLog b/gcc/java/ChangeLog
index 7ed9f4bb1d10..6f127f3df009 100644
--- a/gcc/java/ChangeLog
+++ b/gcc/java/ChangeLog
@@ -1,3 +1,8 @@
+2003-09-23  Roger Sayle  <roger@eyesopen.com>
+
+	* jcf-write.c (generate_bytecode_insns): Optimize binary operations
+	with equal operands without side-effects.
+
 2003-09-22  Jeff Sturm  <jsturm@one-point.com>
 
 	* decl.c (java_init_decl_processing): Don't emit otable decls
diff --git a/gcc/java/jcf-write.c b/gcc/java/jcf-write.c
index 82c77b1c8310..aed6eb9773b7 100644
--- a/gcc/java/jcf-write.c
+++ b/gcc/java/jcf-write.c
@@ -2095,10 +2095,10 @@ generate_bytecode_insns (tree exp, int target, struct jcf_partial *state)
       tree arg0 = TREE_OPERAND (exp, 0);
       tree arg1 = TREE_OPERAND (exp, 1);
       jopcode += adjust_typed_op (type, 3);
-      if (arg0 == arg1 && TREE_CODE (arg0) == SAVE_EXPR)
+      if (arg0 != NULL_TREE && operand_equal_p (arg0, arg1, 0))
 	{
 	  /* fold may (e.g) convert 2*x to x+x. */
-	  generate_bytecode_insns (TREE_OPERAND (arg0, 0), target, state);
+	  generate_bytecode_insns (arg0, target, state);
 	  emit_dup (TYPE_PRECISION (TREE_TYPE (arg0)) > 32 ? 2 : 1, 0, state);
 	}
       else