[Bug target/111403] LoongArch: Wrong code with -O -mlasx -fopenmp-simd
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111403 --- Comment #8 from Chenghui Pan --- (In reply to Xi Ruoyao from comment #4) > After r14-5545 this issue became latent. > > And at some point before r14-5545 this issue became nondeterministic: a > compiled program *sometimes* crashes. Really strange... After applying this commit, GCC does not apply loop peeling while processing the openmp reduction directive, which I think is the spawn point of the problematic codes (According to Guo Jie's sample).
[Bug target/111424] LoongArch: Enable vect test suite
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111424 --- Comment #3 from Chenghui Pan --- vect.exp is enabled in master branch for now, but there's some check_effective_target procs in gcc/testsuite/lib/target-supports.exp that seems need modifying for enabling more vectorization tests.
[Bug target/111424] LoongArch: Enable vect test suite
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111424 --- Comment #1 from Chenghui Pan --- I also addressed some failed testcases with -mlsx/-mlasx enabled and try to resolve them by adding dg-options and etc. or editing target-supports.exp to append loongarch directives. (May submit to maillist later). Bug 111403's problem is a little complicated and still under investigation...
[Bug rtl-optimization/110939] [14 Regression] 14.0 ICE at rtl.h:2297 while bootstrapping on loongarch64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110939 --- Comment #10 from Chenghui Pan --- (In reply to Stefan Schulze Frielinghaus from comment #9) > Thanks for the reproducer and sorry for the hassle. > > The normal form of a constant for a mode with fewer bits than in > HOST_WIDE_INT is a sign extended version of the original constant. This > even holds for unsigned constants which I missed. The following should fix > this: > > diff --git a/gcc/combine.cc b/gcc/combine.cc > index e46d202d0a7..9e5bf96a09d 100644 > --- a/gcc/combine.cc > +++ b/gcc/combine.cc > @@ -12059,7 +12059,7 @@ simplify_compare_const (enum rtx_code code, > machine_mode mode, >: (GET_MODE_SIZE (int_mode) > - GET_MODE_SIZE (narrow_mode_iter))); > *pop0 = adjust_address_nv (op0, narrow_mode_iter, offset); > - *pop1 = GEN_INT (n); > + *pop1 = gen_int_mode (n, narrow_mode_iter); > return adjusted_code; > } > } > > Can you give this a try? Bootstrapping is successful with this, thank you!
[Bug rtl-optimization/110939] [14 Regression] 14.0 ICE at rtl.h:2297 while bootstrapping on loongarch64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110939 --- Comment #8 from Chenghui Pan --- (In reply to Stefan Schulze Frielinghaus from comment #6) > I tried to reproduce it with a cross compiler while using the reproducer > from PR110867 without getting an ICE. Can you attach a pre processed source > file and a corresponding gcc invocation? I attach the a preprocessed file that ICE happening when bootstrapping. Sorry for not adding it at first. The command that uses to compile this file is: /home/panchenghui/upstream-unmodded/stuff/gcc/./prev-gcc/xg++ -save-temps -B/home/panchenghui/upstream-unmodded/stuff/gcc/./prev-gcc/ -B/home/panchenghui/upstream-unmodded/install/loongarch64-unknown-linux-gnu/bin/ -nostdinc++ -B/home/panchenghui/upstream-unmodded/stuff/gcc/prev-loongarch64-unknown-linux-gnu/libstdc++-v3/src/.libs -B/home/panchenghui/upstream-unmodded/stuff/gcc/prev-loongarch64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -I/home/panchenghui/upstream-unmodded/stuff/gcc/prev-loongarch64-unknown-linux-gnu/libstdc++-v3/include/loongarch64-unknown-linux-gnu -I/home/panchenghui/upstream-unmodded/stuff/gcc/prev-loongarch64-unknown-linux-gnu/libstdc++-v3/include -I/home/panchenghui/upstream-unmodded/gcc/libstdc++-v3/libsupc++ -L/home/panchenghui/upstream-unmodded/stuff/gcc/prev-loongarch64-unknown-linux-gnu/libstdc++-v3/src/.libs -L/home/panchenghui/upstream-unmodded/stuff/gcc/prev-loongarch64-unknown-linux-gnu/libstdc++-v3/libsupc++/.libs -fno-PIE -c -g -O2 -fno-checking -gtoggle -DIN_GCC-fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Wconditionally-supported -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common -DHAVE_CONFIG_H -fno-PIE -I. -I. -I/home/panchenghui/upstream-unmodded/gcc/gcc -I/home/panchenghui/upstream-unmodded/gcc/gcc/. -I/home/panchenghui/upstream-unmodded/gcc/gcc/../include -I/home/panchenghui/upstream-unmodded/gcc/gcc/../libcpp/include -I/home/panchenghui/upstream-unmodded/gcc/gcc/../libcody -I/home/panchenghui/upstream-unmodded/gcc/gcc/../libdecnumber -I/home/panchenghui/upstream-unmodded/gcc/gcc/../libdecnumber/dpd -I../libdecnumber -I/home/panchenghui/upstream-unmodded/gcc/gcc/../libbacktrace -o tree-cfgcleanup.o -MT tree-cfgcleanup.o -MMD -MP -MF ./.deps/tree-cfgcleanup.TPo /home/panchenghui/upstream-unmodded/gcc/gcc/tree-cfgcleanup.cc
[Bug rtl-optimization/110939] [14 Regression] 14.0 ICE at rtl.h:2297 while bootstrapping on loongarch64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110939 --- Comment #7 from Chenghui Pan --- Created attachment 55706 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55706=edit preprocessed file of gcc/tree-cfgcleanup.cc, ICE occurred in this place.
[Bug rtl-optimization/110939] [14 Regression] 14.0 ICE at rtl.h:2297 while bootstrapping on loongarch64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110939 --- Comment #4 from Chenghui Pan --- (In reply to Richard Biener from comment #1) > I think this was reported before (and fixed by r14-2932-g41ef5a34161356). > Can you try again with updated GCC? I still get the exact same ICE message with updated GCC. (The commit I use for now is 25c4b1620ebc10fceabd86a34fdbbaf8037e7e82, with same configure options.)
[Bug rtl-optimization/110939] [14 Regression] 14.0 ICE at rtl.h:2297 while bootstrapping on loongarch64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110939 --- Comment #2 from Chenghui Pan --- (In reply to Richard Biener from comment #1) > I think this was reported before (and fixed by r14-2932-g41ef5a34161356). > Can you try again with updated GCC? Ok, I clone a new copy of codes and is bootstrapping on loongarch64 now.
[Bug bootstrap/110939] New: 14.0 ICE at rtl.h:2297 while bootstrapping on loongarch64
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110939 Bug ID: 110939 Summary: 14.0 ICE at rtl.h:2297 while bootstrapping on loongarch64 Product: gcc Version: 14.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap Assignee: unassigned at gcc dot gnu.org Reporter: panchenghui at loongson dot cn Target Milestone: --- since commit 7cdd0860949c6c3232e6cff1d7ca37bb5234074c, I get ICE at rtl.h:2297 when I try to bootstrap on loongarch64. I have seen the similar case in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110869 and try to build with the latest commits in master branch but the problem still exists. Configure: ../gcc/configure --prefix=/home/panchenghui/upstream-unmodded/build/install --disable-libsanitizer --disable-gcov --disable-multilib ICE output: during RTL pass: combine /home/panchenghui/upstream-unmodded/gcc/gcc/tree-cfgcleanup.cc: In function 'bool want_merge_blocks_p(basic_block, basic_block)': /home/panchenghui/upstream-unmodded/gcc/gcc/tree-cfgcleanup.cc:761:1: internal compiler error: in decompose, at rtl.h:2297 761 | } | ^ 0x1210c7997 wi::int_traits >::decompose(long*, unsigned int, std::pair const&) /home/panchenghui/upstream-unmodded/gcc/gcc/rtl.h:2297 0x1211478cb wide_int_ref_storage::wide_int_ref_storage >(std::pair const&) /home/panchenghui/upstream-unmodded/gcc/gcc/wide-int.h:1030 0x121146bab generic_wide_int >::generic_wide_int >(std::pair const&) /home/panchenghui/upstream-unmodded/gcc/gcc/wide-int.h:788 0x12177d13b simplify_const_unary_operation(rtx_code, machine_mode, rtx_def*, machine_mode) /home/panchenghui/upstream-unmodded/gcc/gcc/simplify-rtx.cc:2131 0x1217774e7 simplify_context::simplify_unary_operation(rtx_code, machine_mode, rtx_def*, machine_mode) /home/panchenghui/upstream-unmodded/gcc/gcc/simplify-rtx.cc:889 0x12177568f simplify_context::simplify_gen_unary(rtx_code, machine_mode, rtx_def*, machine_mode) /home/panchenghui/upstream-unmodded/gcc/gcc/simplify-rtx.cc:360 0x120f6e79f simplify_gen_unary(rtx_code, machine_mode, rtx_def*, machine_mode) /home/panchenghui/upstream-unmodded/gcc/gcc/rtl.h:3520 0x12227818b simplify_comparison /home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:13129 0x1222607c7 combine_simplify_rtx /home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:6176 0x12225e30f subst /home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:5609 0x12225df23 subst /home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:5536 0x12225df23 subst /home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:5536 0x122256ac7 try_combine /home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:3369 0x1222506fb combine_instructions /home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:1357 0x12227da6b rest_of_handle_combine /home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:15063 0x12227db83 execute /home/panchenghui/upstream-unmodded/gcc/gcc/combine.cc:15107
