From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 363 invoked by alias); 16 Apr 2009 12:26:58 -0000 Received: (qmail 32706 invoked by uid 48); 16 Apr 2009 12:26:44 -0000 Date: Thu, 16 Apr 2009 12:26:00 -0000 Message-ID: <20090416122644.32705.qmail@sourceware.org> X-Bugzilla-Reason: CC References: Subject: [Bug rtl-optimization/39779] ICE shifting byte to the right with constant > 7FFFFFFF In-Reply-To: Reply-To: gcc-bugzilla@gcc.gnu.org To: gcc-bugs@gcc.gnu.org From: "ubizjak at gmail dot com" Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org X-SW-Source: 2009-04/txt/msg01332.txt.bz2 ------- Comment #3 from ubizjak at gmail dot com 2009-04-16 12:26 ------- This testcase fails for all optimization levels: --cut here-- /* { dg-do compile } */ /* { dg-options "-w" } */ int test (char v1) { v1 >>= 0xdebecced; return v1; } --cut here-- Follwing patch fixes the failure, but introduces several testsuite failures: --cut here-- Index: optabs.c =================================================================== --- optabs.c (revision 146146) +++ optabs.c (working copy) @@ -1478,18 +1478,10 @@ expand_binop_directly (enum machine_mode for their mode. */ if (GET_MODE (xop0) != mode0 && mode0 != VOIDmode) - xop0 = convert_modes (mode0, - GET_MODE (xop0) != VOIDmode - ? GET_MODE (xop0) - : mode, - xop0, unsignedp); + xop0 = convert_modes (mode0, GET_MODE (xop0), xop0, unsignedp); if (GET_MODE (xop1) != mode1 && mode1 != VOIDmode) - xop1 = convert_modes (mode1, - GET_MODE (xop1) != VOIDmode - ? GET_MODE (xop1) - : mode, - xop1, unsignedp); + xop1 = convert_modes (mode1, GET_MODE (xop1), xop1, unsignedp); /* If operation is commutative, try to make the first operand a register. --cut here-- -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39779