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From: dje@watson.ibm.com To: gcc-gnats@gcc.gnu.org Subject: c/2702: expr.c:emit_group_load() constant handling broken Date: Mon, 30 Apr 2001 15:06:00 -0000 [thread overview] Message-ID: <20010430220155.5710.qmail@sourceware.cygnus.com> (raw) >Number: 2702 >Category: c >Synopsis: expr.c:emit_group_load() constant handling broken >Confidential: no >Severity: serious >Priority: high >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Mon Apr 30 15:06:00 PDT 2001 >Closed-Date: >Last-Modified: >Originator: dje@watson.ibm.com >Release: gcc 3.0 20010430 (prerelease) >Organization: >Environment: AIX 4.3.3.0 >Description: The 2000-08-14 patch by Richard Henderson to not force constants into registers went too far: it assumes that constants always can be loaded into parameter registers directly. Without an intermediate pseudo, GCC fails before reload has a chance to fixup the load because it tries to load the constant directly, then in pieces, then change the address of the constant, then aborts. >How-To-Repeat: c-torture/compile/960829-1.c >Fix: http://gcc.gnu.org/ml/gcc-patches/2001-02/msg01460.html >Release-Note: >Audit-Trail: >Unformatted:
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