From 98f510444c41861865ac4d815df738fbc0fac93a Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Wed, 21 Jan 2015 22:59:34 +0100 Subject: re PR debug/64511 (ICE at -O3 with -g enabled on x86_64-linux-gnu) PR debug/64511 * simplify-rtx.c (simplify_relational_operation_1): Don't try to optimize (eq/ne (and (side_effects) (const_int 0)) (const_int 0)) into (eq/ne (and (not (side_effects)) (const_int 0)) (const_int 0)). * gcc.dg/pr64511.c: New test. From-SVN: r219974 --- gcc/simplify-rtx.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'gcc/simplify-rtx.c') diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index d26267d..5c9e3bf 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -4589,7 +4589,8 @@ simplify_relational_operation_1 (enum rtx_code code, machine_mode mode, if ((code == EQ || code == NE) && op0code == AND && rtx_equal_p (XEXP (op0, 0), op1) - && !side_effects_p (op1)) + && !side_effects_p (op1) + && op1 != CONST0_RTX (cmp_mode)) { rtx not_y = simplify_gen_unary (NOT, cmp_mode, XEXP (op0, 1), cmp_mode); rtx lhs = simplify_gen_binary (AND, cmp_mode, not_y, XEXP (op0, 0)); @@ -4602,7 +4603,8 @@ simplify_relational_operation_1 (enum rtx_code code, machine_mode mode, if ((code == EQ || code == NE) && op0code == AND && rtx_equal_p (XEXP (op0, 1), op1) - && !side_effects_p (op1)) + && !side_effects_p (op1) + && op1 != CONST0_RTX (cmp_mode)) { rtx not_x = simplify_gen_unary (NOT, cmp_mode, XEXP (op0, 0), cmp_mode); rtx lhs = simplify_gen_binary (AND, cmp_mode, not_x, XEXP (op0, 1)); -- cgit v1.1