Bootstrap on powerpc-linux trunk broken between r145531 and r145540 internal compiler error: in fold_convert, at fold-const.c:2506

[Laurent GUERBY <laurent at guerby dot net>]

Hi,

The compile farm powerpc-linux tester (gcc53) now fails to bootstrap,
from the ChangeLog and the message I would guess this was caused by PR
8781/37892 patch.

Sincerely,

Laurent

Updated to revision 145531.
=> OK

Updating SVN tree
U    gcc/tree-ssa-sccvn.c
U    gcc/tree-ssa-sccvn.h
U    gcc/ChangeLog
A    gcc/testsuite/gcc.c-torture/execute/pr39501.c
A    gcc/testsuite/gcc.c-torture/execute/pr39501.x
A    gcc/testsuite/gcc.c-torture/compile/pr39636.c
A    gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-25.c
U    gcc/testsuite/ChangeLog
A    gcc/testsuite/g++.dg/tree-ssa/pr8781.C
U    gcc/unwind-dw2.c
U    gcc/unwind-dw2.h
U    gcc/tree-ssa-pre.c
U    gcc/tree-ssa-forwprop.c
U    gcc/tree-ssa.c
U    gcc/config/arm/arm.md
U    gcc/tree-ssa-operands.c
Updated to revision 145540.
=> FAIL

/home/guerby/build/./gcc/xgcc -B/home/guerby/build/./gcc/ -B/n/53/guerby/install-trunk/powerpc-unknown-linux-gnu/bin/ -B/n/53/guerby/install-trunk/powerpc-unknown-linux-gnu/lib/ -isystem /n/53/guerby/instal\
l-trunk/powerpc-unknown-linux-gnu/include -isystem /n/53/guerby/install-trunk/powerpc-unknown-linux-gnu/sys-include -g -O2 -msoft-float -fPIC -mstrict-align -O2  -g -O2 -DIN_GCC   -W -Wall -Wwrite-strings -\
Wstrict-prototypes -Wmissing-prototypes -Wcast-qual -Wold-style-definition  -isystem ./include  -fPIC -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED  -mlong-double-128 -I. -I. -I../../.././gcc\
 -I../../../../trunk/libgcc -I../../../../trunk/libgcc/. -I../../../../trunk/libgcc/../gcc -I../../../../trunk/libgcc/../include -I../../../../trunk/libgcc/../libdecnumber/dpd -I../../../../trunk/libgcc/../\
libdecnumber -DHAVE_CC_TLS -o decQuad.o -MT decQuad.o -MD -MP -MF decQuad.dep -c ../../../../trunk/libgcc/../libdecnumber/decQuad.c
In file included from ../../../../trunk/libgcc/../libdecnumber/decQuad.c:145:
../../../../trunk/libgcc/../libdecnumber/decBasic.c: In function 'decFiniteMultiply':
../../../../trunk/libgcc/../libdecnumber/decBasic.c:723: internal compiler error: in fold_convert, at fold-const.c:2506
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[5]: *** [decQuad.o] Error 1
make[5]: Leaving directory `/home/guerby/build/powerpc-unknown-linux-gnu/nof/libgcc'
make[4]: *** [multi-do] Error 1
make[4]: Leaving directory `/home/guerby/build/powerpc-unknown-linux-gnu/libgcc'
make[3]: *** [all-multi] Error 2
make[3]: Leaving directory `/home/guerby/build/powerpc-unknown-linux-gnu/libgcc'
make[2]: *** [all-stage1-target-libgcc] Error 2
make[2]: Leaving directory `/home/guerby/build'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/home/guerby/build'
make: *** [bootstrap] Error 2

svn diff -r 145531:145540
...
+2009-04-04  Richard Guenther  <rguenther@suse.de>
+
+       * tree-ssa.c (verify_ssa): With -O0 we do not need VOPs.
+       * tree-ssa-operands.c (append_vdef): Do not append VOPs at -O0.
+       (append_vuse): Likewise.
+
+2009-04-04  Jakub Jelinek  <jakub@redhat.com>
+
+       * unwind-dw2.h (_Unwind_FrameState): Add REG_UNDEFINED enum value.
+       * unwind-dw2.c (execute_cfa_program): Set how to REG_UNDEFINED
+       instead of REG_UNSAVED for DW_CFA_undefined.
+       (uw_update_context_1): Handle REG_UNDEFINED the same as REG_UNSAVED.
+       (uw_update_context): If RA column is REG_UNDEFINED, mark it as
+       outermost frame.
+
+2009-04-04  Richard Earnshaw  <rearnsha@arm.com>
+
+       PR target/39501
+       * arm.md (movsfcc): Disable if not TARGET_HARD_FLOAT.
+       * testsuite/gcc.c-torture/execute/pr39501.c: New file.
+       * testsuite/gcc.c-torture/execute/pr39501.x: New file.
+
+2009-04-04  Richard Guenther  <rguenther@suse.de>
+
+       PR tree-optimization/8781
+       PR tree-optimization/37892
+       * tree-ssa-sccvn.h (vn_reference_fold_indirect): Declare.
+       * tree-ssa-sccvn.c (vn_reference_fold_indirect): New function.
+       (valueize_refs): Call it for *& valueizations.
+       (shared_reference_ops_from_ref): Rename to ...
+       (valueize_shared_reference_ops_from_ref): ... this and valueize.
+       (shared_reference_ops_from_call): Rename to ...
+       (valueize_shared_reference_ops_from_call): ... this and valueize.
+       (vn_reference_lookup): Update.
+       (visit_reference_op_call): Likewise.
+       * tree-ssa-pre.c (phi_translate_1): Fold *&.
+       (eliminate): Value-replace the call address in call statements.
+
+2009-04-04  Richard Guenther  <rguenther@suse.de>
+
+       PR tree-optimization/39636
+       * tree-ssa-forwprop.c
+       (forward_propagate_addr_into_variable_array_index): Check for
+       GIMPLE_ASSIGN before accessing the rhs code.
+