Hello, there seems to be a problem compiling the attached source file with i686-pc-linux-gnu-gcc: gcc -m32 -Wp,-MD,drivers/infiniband/hw/mthca/.mthca_provider.o.d -nostdinc -isystem /home/mstein/host-gcc/trunk-2007-07-01/bin/../lib/gcc/i686-pc-linux-gnu/4.3.0/include -D__KERNEL__ -Iinclude -include include/linux/autoconf.h -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Os -pipe -msoft-float -mregparm=3 -mpreferred-stack-boundary=2 -march=i686 -mtune=generic -ffreestanding -maccumulate-outgoing-args -DCONFIG_AS_CFI=1 -Iinclude/asm-i386/mach-default -fno-omit-frame-pointer -fno-optimize-sibling-calls -g -fno-stack-protector -Wdeclaration-after-statement -Wno-pointer-sign -DMODULE -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(mthca_provider)" -D"KBUILD_MODNAME=KBUILD_STR(ib_mthca)" -c -o drivers/infiniband/hw/mthca/.tmp_mthca_provider.o drivers/infiniband/hw/mthca/mthca_provider.c gcc: warning: -pipe ignored because -save-temps specified drivers/infiniband/hw/mthca/mthca_provider.c: In function 'mthca_unmap_fmr': drivers/infiniband/hw/mthca/mthca_provider.c:1133: internal compiler error: in set_ssa_val_to, at tree-ssa-sccvn.c:1011 Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. host gcc -v Using built-in specs. Target: i686-pc-linux-gnu Configured with: /home/mstein/svn/trunk/configure --enable-languages=c --disable-nls --prefix=/n/07/mstein/host-gcc/trunk-2007-07-01 Thread model: posix gcc version 4.3.0 20070630 (experimental) Tested revion: 126157 Last succesfull build revision: 126095
Created attachment 13813 [details] preprocessed source file from linux-2.6.20, delta-reduced
Here is a more reduced testcase (without the inline-asm): struct list_head { struct list_head *next, *prev; }; struct ib_fmr { int *device; struct list_head list; }; static inline struct mthca_fmr *to_mfmr(struct ib_fmr *ibmr) { const struct ib_fmr *__mptr = (ibmr); return (struct mthca_fmr *)( (char *)__mptr ); } void mthca_unmap_fmr(struct list_head *fmr_list) { struct ib_fmr *fmr; if (mthca_is_memfree()) { for (fmr = ({ const struct list_head *__mptr = ((fmr_list)->next); (struct ib_fmr *)( (char *)__mptr - 8 );}); &fmr->list != (fmr_list); fmr = ({ const struct list_head *__mptr = (fmr->list.next); (struct ib_fmr *)( (char *)__mptr - 8);}) ) mthca_arbel_fmr_unmap(to_mfmr(fmr)); } else for (fmr = ({ const struct list_head *__mptr = ((fmr_list)->next); (struct ib_fmr *)( (char *)__mptr - 8);}); &fmr->list != (fmr_list); fmr = ({ const struct list_head *__mptr = (fmr->list.next); (struct ib_fmr *)( (char *)__mptr - 8);}) ) mthca_tavor_fmr_unmap(to_mfmr(fmr)); }
Subject: Bug 32571 Author: dberlin Date: Mon Jul 2 04:35:37 2007 New Revision: 126186 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=126186 Log: 2007-07-01 Daniel Berlin <dberlin@dberlin.org> Fix PR tree-optimization/32571 * tree-ssa-sccvn.c (visit_use): Shortcut copies to avoid simplifying them. Modified: trunk/gcc/ChangeLog trunk/gcc/tree-ssa-sccvn.c
Fixed
*** Bug 32576 has been marked as a duplicate of this bug. ***