Richard Guenther <rguent...@suse.de> writes:
> Several passes needlessly cleanup EH after gsi_remove because they do
> not know whether the stmt was removed from EH regions. The following
> patch returns this information from gsi_remove and adjusts all users
> I could find appropriately.
I suspect this patch caused a go1 SEGV compiling the non-PIC
libgo/exp/norm.o on i386-pc-solaris2.10:
> /var/gcc/regression/trunk/10-gcc-gld/build/./gcc/gccgo
> -B/var/gcc/regression/trunk/10-gcc-gld/build/./gcc/
> -B/vol/gcc/i386-pc-solaris2.10/bin/ -B/vol/gcc/i386-pc-solaris2.10/lib/
> -isystem /vol/gcc/i386-pc-solaris2.10/include -isystem
> /vol/gcc/i386-pc-solaris2.10/sys-include -minline-all-stringops -g -O2 -I .
> -c -fgo-prefix=libgo_exp
> /vol/gcc/src/hg/trunk/local/libgo/go/exp/norm/composition.go
> /vol/gcc/src/hg/trunk/local/libgo/go/exp/norm/forminfo.go
> /vol/gcc/src/hg/trunk/local/libgo/go/exp/norm/input.go
> /vol/gcc/src/hg/trunk/local/libgo/go/exp/norm/iter.go
> /vol/gcc/src/hg/trunk/local/libgo/go/exp/norm/normalize.go
> /vol/gcc/src/hg/trunk/local/libgo/go/exp/norm/readwriter.go
> /vol/gcc/src/hg/trunk/local/libgo/go/exp/norm/tables.go
> /vol/gcc/src/hg/trunk/local/libgo/go/exp/norm/trie.go -o exp/norm.o
> -save-temps
/vol/gcc/src/hg/trunk/local/libgo/go/exp/norm/normalize.go: In function
'norm.decomposeToLastBoundary':
/vol/gcc/src/hg/trunk/local/libgo/go/exp/norm/normalize.go:429:1: internal
compiler error: Segmentation Fault
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1 (LWP 1)]
0x0852aefc in dse_optimize_stmt (gsi=...) at
/vol/gcc/src/hg/trunk/local/gcc/tree-ssa-dse.c:262
(gdb) where
#0 0x0852aefc in dse_optimize_stmt (gsi=...) at
/vol/gcc/src/hg/trunk/local/gcc/tree-ssa-dse.c:262
#1 dse_enter_block (walk_data=0x8046ed0, bb=0xfe2c6640) at
/vol/gcc/src/hg/trunk/local/gcc/tree-ssa-dse.c:278
#2 0x08875e85 in walk_dominator_tree (walk_data=0x8046ed0, bb=0xfe2c6640) at
/vol/gcc/src/hg/trunk/local/gcc/domwalk.c:188
#3 0x0852a757 in tree_ssa_dse () at
/vol/gcc/src/hg/trunk/local/gcc/tree-ssa-dse.c:313
#4 0x0840cb64 in execute_one_pass (pass=pass@entry=0x8dbe8a0) at
/vol/gcc/src/hg/trunk/local/gcc/passes.c:2079
#5 0x0840cebd in execute_pass_list (pass=0x8dbe8a0) at
/vol/gcc/src/hg/trunk/local/gcc/passes.c:2134
#6 0x0840ced0 in execute_pass_list (pass=0x8dbe4e0) at
/vol/gcc/src/hg/trunk/local/gcc/passes.c:2135
#7 0x084ea0f6 in tree_rest_of_compilation (fndecl=0xfeb9d300) at
/vol/gcc/src/hg/trunk/local/gcc/tree-optimize.c:422
#8 0x08283417 in cgraph_expand_function (node=0xfebb599c) at
/vol/gcc/src/hg/trunk/local/gcc/cgraphunit.c:1784
#9 0x08284c55 in cgraph_expand_all_functions () at
/vol/gcc/src/hg/trunk/local/gcc/cgraphunit.c:1851
#10 cgraph_optimize () at /vol/gcc/src/hg/trunk/local/gcc/cgraphunit.c:2542
#11 0x0828518f in cgraph_finalize_compilation_unit () at
/vol/gcc/src/hg/trunk/local/gcc/cgraphunit.c:2628
#12 0x081d117d in Gogo::write_globals (this=0x8f2f170) at
/vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/gogo-tree.cc:934
#13 0x081cb343 in go_write_globals () at
/vol/gcc/src/hg/trunk/local/gcc/go/gofrontend/go.cc:154
#14 0x084a432b in compile_file () at
/vol/gcc/src/hg/trunk/local/gcc/toplev.c:572
#15 do_compile () at /vol/gcc/src/hg/trunk/local/gcc/toplev.c:1936
#16 toplev_main (argc=26, argv=0x80471cc) at
/vol/gcc/src/hg/trunk/local/gcc/toplev.c:2012
#17 0x0819f3bb in main (argc=26, argv=0x80471cc) at
/vol/gcc/src/hg/trunk/local/gcc/main.c:36
Unfortunately, I cannot look into most of the variables used since gdb
just shows them as `optimized out'.
I'm just running a x86_64-unknown-linux-gnu bootstrap to check if it
also occurs there.
Rainer
--
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University
