On Tue, Sep 14, 2021 at 9:24 AM Hongtao Liu <crazylht@xxxxxxxxx> wrote: > > On Tue, Sep 14, 2021 at 8:07 AM André Almeida <andrealmeid@xxxxxxxxxx> wrote: > > > > I confirm that this patch fix the issue! > > > > I found other build breaks in some older commits, do you have any tips > > to on how to do git bisect on gcc repo? > You can create a branch based on master, and rebase my fix patch to > make it just after the revert commits, then you can do regular gcc > bisect for guilty commit. i've compare gcc testsuite between r12-3456 and r12-3484, there're 5 new failure testcase unix/-m32: c-c++-common/auto-init-padding-1.c -Wc++-compat scan-tree-dump gimple ".DEFERRED_INIT \\(24, 1, 0\\)" unix/-m32: c-c++-common/auto-init-padding-1.c -std=gnu++14 scan-tree-dump gimple ".DEFERRED_INIT \\(24, 1, 0\\)" unix/-m32: c-c++-common/auto-init-padding-1.c -std=gnu++17 scan-tree-dump gimple ".DEFERRED_INIT \\(24, 1, 0\\)" unix/-m32: c-c++-common/auto-init-padding-1.c -std=gnu++2a scan-tree-dump gimple ".DEFERRED_INIT \\(24, 1, 0\\)" unix/-m32: c-c++-common/auto-init-padding-1.c -std=gnu++98 scan-tree-dump gimple ".DEFERRED_INIT \\(24, 1, 0\\)" And they seem to be fix in the lastest trunk. > > > > Às 22:05 de 12/09/21, Hongtao Liu escreveu: > > > Yes, sorry for the inconvenience, the original patch introduced > > > several regression on power targets, it's decided to revert the patch. > > > And there's another patch [1] to solve ICE for build HF related libgcc > > > functions, and the patch is under review. > > > [1] https://gcc.gnu.org/pipermail/gcc-patches/2021-September/579178.html > > > > > > On Mon, Sep 13, 2021 at 8:12 AM André Almeida via Gcc-help > > > <gcc-help@xxxxxxxxxxx> wrote: > > >> > > >> Hi Hongtao Liu, > > >> > > >> I was trying to compile GCC, but I'm getting the following error: > > >> > > >> during RTL pass: expand > > >> In file included from ../../../gcc/libgcc/soft-fp/soft-fp.h:317, > > >> from ../../../gcc/libgcc/soft-fp/floattihf.c:29: > > >> ../../../gcc/libgcc/soft-fp/floattihf.c: In function ‘__floattihf’: > > >> ../../../gcc/libgcc/soft-fp/op-1.h:131:13: internal compiler error: in > > >> gen_lowpart_general, at rtlhooks.c:57 > > >> 131 | (val) = _FP_PACK_RAW_1_flo.flt; \ > > >> | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ > > >> ../../../gcc/libgcc/soft-fp/half.h:84:33: note: in expansion of macro > > >> ‘_FP_PACK_RAW_1’ > > >> 84 | #define FP_PACK_RAW_H(val, X) _FP_PACK_RAW_1 (H, (val), X) > > >> | ^~~~~~~~~~~~~~ > > >> ../../../gcc/libgcc/soft-fp/floattihf.c:41:3: note: in expansion of > > >> macro ‘FP_PACK_RAW_H’ > > >> 41 | FP_PACK_RAW_H (a, A); > > >> | ^~~~~~~~~~~~~ > > >> > > >> I got a similar error on other files as well. I compiled with the > > >> following configuration: > > >> > > >> ../gcc/configure --prefix=/tmp/gcc --enable-languages=c --disable-bootstrap > > >> > > >> I did a git bisect and I found the offending commit that break the build: > > >> > > >> 57b7c432cce893e1ba60d9b94a9606df6b419379 > > >> > > >> Revert "Get rid of all float-int special cases in validate_subreg." > > >> > > >> I was trying to fix the build myself and upstream the fix, but I didn't > > >> manage to, so I would like to ask for help on how to proceed here. > > >> > > >> Thanks! > > >> André > > > > > > > > > > > > > -- > BR, > Hongtao -- BR, Hongtao
