From 48b6f9afd5649f78aeb5fe9eb6f77cba68d3f579 Mon Sep 17 00:00:00 2001 From: sayle Date: Mon, 16 Jun 2003 12:45:13 +0000 Subject: * expr.c (expand_expr ): If operand_equal_p considers both operands of the addition equal, reuse the expanded RTL. (expand_expr ): Likewise for multiplication. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@68012 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/expr.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) (limited to 'gcc/expr.c') diff --git a/gcc/expr.c b/gcc/expr.c index 3131a33e50d..83240c682da 100644 --- a/gcc/expr.c +++ b/gcc/expr.c @@ -8226,7 +8226,11 @@ expand_expr (exp, target, tmode, modifier) || mode != ptr_mode) { op0 = expand_expr (TREE_OPERAND (exp, 0), subtarget, VOIDmode, 0); - op1 = expand_expr (TREE_OPERAND (exp, 1), NULL_RTX, VOIDmode, 0); + if (! operand_equal_p (TREE_OPERAND (exp, 0), + TREE_OPERAND (exp, 1), 0)) + op1 = expand_expr (TREE_OPERAND (exp, 1), NULL_RTX, VOIDmode, 0); + else + op1 = op0; if (op0 == const0_rtx) return op1; if (op1 == const0_rtx) @@ -8235,7 +8239,12 @@ expand_expr (exp, target, tmode, modifier) } op0 = expand_expr (TREE_OPERAND (exp, 0), subtarget, VOIDmode, modifier); - op1 = expand_expr (TREE_OPERAND (exp, 1), NULL_RTX, VOIDmode, modifier); + if (! operand_equal_p (TREE_OPERAND (exp, 0), + TREE_OPERAND (exp, 1), 0)) + op1 = expand_expr (TREE_OPERAND (exp, 1), NULL_RTX, + VOIDmode, modifier); + else + op1 = op0; /* We come here from MINUS_EXPR when the second operand is a constant. */ @@ -8457,7 +8466,11 @@ expand_expr (exp, target, tmode, modifier) } } op0 = expand_expr (TREE_OPERAND (exp, 0), subtarget, VOIDmode, 0); - op1 = expand_expr (TREE_OPERAND (exp, 1), NULL_RTX, VOIDmode, 0); + if (! operand_equal_p (TREE_OPERAND (exp, 0), + TREE_OPERAND (exp, 1), 0)) + op1 = expand_expr (TREE_OPERAND (exp, 1), NULL_RTX, VOIDmode, 0); + else + op1 = op0; return expand_mult (mode, op0, op1, target, unsignedp); case TRUNC_DIV_EXPR: -- cgit v1.2.3