From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 2457 invoked by alias); 28 Aug 2005 10:34:08 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 2420 invoked by uid 48); 28 Aug 2005 10:34:03 -0000 Date: Sun, 28 Aug 2005 11:02:00 -0000 From: "rth at gcc dot gnu dot org" To: gcc-bugs@gcc.gnu.org Message-ID: <20050828103401.23601.rth@gcc.gnu.org> Reply-To: gcc-bugzilla@gcc.gnu.org Subject: [Bug rtl-optimization/23601] New: reload may drop non-call exception information X-Bugzilla-Reason: CC X-SW-Source: 2005-08/txt/msg03186.txt.bz2 List-Id: Seen as an ia64 bootstrap failure as of 20050828 in libjava/java/lang/reflect/natMethod.cc, though the problem could affect any target. The observed problem is that reload chooses a reg/reg alternative for reloading a memory (for unknown reasons). This causes the insn stream to be changed from (set (reg 1) (mem)) // REG_EH_REGION 1 to (set (reg 2) (addr)) (set (reg 1) (mem)) (set (reg 1) (reg 1)) // REG_EH_REGION 1 so that the insn that actually traps no longer contains the REG_EH_REGION note. I figure the note ought to get distributed during emit_reload_insns. -- Summary: reload may drop non-call exception information Product: gcc Version: 4.1.0 Status: UNCONFIRMED Keywords: wrong-code, ice-on-valid-code Severity: normal Priority: P2 Component: rtl-optimization AssignedTo: rth at gcc dot gnu dot org ReportedBy: rth at gcc dot gnu dot org CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23601