On Mon, 2024-05-13 20:19:42 +0200, Jan-Benedict Glaw <jbg...@lug-owl.de> wrote:
> On Tue, 2024-04-30 17:24:15 -0400, Andrew MacLeod <amacl...@redhat.com> wrote:
> > Bootstrapped on x86_64-pc-linux-gnu with no regressions.  pushed.
> 
> Starting with this patch (upstream as
> e8ae56a7dc46e39a48017bb5159e4dc672ec7fad, can still be reproduced with
> 0c585c8d0dd85601a8d116ada99126a48c8ce9fd as of May 13th), my CI builds fail 
> for
> csky-elf in all-target-libgcc by falling into a loop infinite loop:
> 
> ../gcc/configure '--with-pkgversion=basepoints/gcc-15-432-g0c585c8d0dd, built 
> at 1715608899'  \
>       --prefix=/tmp/gcc-csky-elf --enable-werror-always 
> --enable-languages=all                \
>       --disable-gcov --disable-shared --disable-threads --target=csky-elf 
> --without-headers
> make V=1 all-gcc
> make V=1 install-strip-gcc
> make V=1 all-target-libgcc

Just to add:

/var/lib/laminar/run/gcc-csky-elf/65/toolchain-build/./gcc/cc1 -quiet           
                \
        -I . -I . -I ../../.././gcc -I ../../../../gcc/libgcc                   
                \
        -I ../../../../gcc/libgcc/. -I ../../../../gcc/libgcc/../gcc            
                \
        -I ../../../../gcc/libgcc/../include -imultilib ck801                   
                \
        -iprefix 
/var/lib/laminar/run/gcc-csky-elf/65/toolchain-build/gcc/../lib/gcc/csky-elf/15.0.0/
   \
        -isystem 
/var/lib/laminar/run/gcc-csky-elf/65/toolchain-build/./gcc/include             \
        -isystem 
/var/lib/laminar/run/gcc-csky-elf/65/toolchain-build/./gcc/include-fixed       \
        -MD unwind-dw2-fde.d -MF unwind-dw2-fde.dep -MP -MT unwind-dw2-fde.o    
                \
        -D IN_GCC -D CROSS_DIRECTORY_STRUCTURE -D IN_LIBGCC2 -D inhibit_libc    
                \
        -D HAVE_CC_TLS -D USE_EMUTLS -D HIDE_EXPORTS                            
                \
        -isystem /tmp/gcc-csky-elf/csky-elf/include                             
                \
        -isystem /tmp/gcc-csky-elf/csky-elf/sys-include                         
                \
        -isystem ./include ../../../../gcc/libgcc/unwind-dw2-fde.c -quiet       
                \
        -dumpbase unwind-dw2-fde.c -dumpbase-ext .c -mcpu=ck801 -g -g -g -O2 
-O2 -O2            \
        -Wextra -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual 
-Wstrict-prototypes            \
        -Wmissing-prototypes -Wold-style-definition -fbuilding-libgcc 
-fno-stack-protector      \
        -fexceptions -fvisibility=hidden -o /tmp/cc3SHedS.s

> (gdb) bt
> #0  0x000000000098f1df in bitmap_list_find_element (head=0x38f2e18, 
> indx=5001) at ../../gcc/gcc/bitmap.cc:375
> #1  bitmap_set_bit (head=0x38f2e18, bit=640244) at ../../gcc/gcc/bitmap.cc:962
> #2  0x0000000000d39cd1 in process_bb_lives (bb=<optimized out>, 
> curr_point=@0x7ffe062c1b2c: 3039473, dead_insn_p=<optimized out>) at 
> ../../gcc/gcc/lra-lives.cc:889
> #3  lra_create_live_ranges_1 (all_p=all_p@entry=true, dead_insn_p=<optimized 
> out>) at ../../gcc/gcc/lra-lives.cc:1416
> #4  0x0000000000d3b810 in lra_create_live_ranges (all_p=all_p@entry=true, 
> dead_insn_p=<optimized out>) at ../../gcc/gcc/lra-lives.cc:1486
> #5  0x0000000000d1a8bd in lra (f=<optimized out>, verbose=<optimized out>) at 
> ../../gcc/gcc/lra.cc:2482
> #6  0x0000000000cd0e18 in do_reload () at ../../gcc/gcc/ira.cc:5973
> #7  (anonymous namespace)::pass_reload::execute (this=<optimized out>) at 
> ../../gcc/gcc/ira.cc:6161
> #8  0x0000000000de6368 in execute_one_pass (pass=pass@entry=0x367c490) at 
> ../../gcc/gcc/passes.cc:2647
> #9  0x0000000000de6c00 in execute_pass_list_1 (pass=0x367c490) at 
> ../../gcc/gcc/passes.cc:2756
> #10 0x0000000000de6c12 in execute_pass_list_1 (pass=0x367b2f0) at 
> ../../gcc/gcc/passes.cc:2757
> #11 0x0000000000de6c39 in execute_pass_list (fn=0x7f24a1c06240, 
> pass=<optimized out>) at ../../gcc/gcc/passes.cc:2767
> #12 0x0000000000a188c6 in cgraph_node::expand (this=0x7f24a1bfaaa0) at 
> ../../gcc/gcc/context.h:48
> #13 cgraph_node::expand (this=0x7f24a1bfaaa0) at 
> ../../gcc/gcc/cgraphunit.cc:1798
> #14 0x0000000000a1a69b in expand_all_functions () at 
> ../../gcc/gcc/cgraphunit.cc:2028
> #15 symbol_table::compile (this=0x7f24a205b000) at 
> ../../gcc/gcc/cgraphunit.cc:2404
> #16 0x0000000000a1ccb8 in symbol_table::compile (this=0x7f24a205b000) at 
> ../../gcc/gcc/cgraphunit.cc:2315
> #17 symbol_table::finalize_compilation_unit (this=0x7f24a205b000) at 
> ../../gcc/gcc/cgraphunit.cc:2589
> #18 0x0000000000f0932d in compile_file () at ../../gcc/gcc/toplev.cc:476
> #19 0x0000000000839648 in do_compile () at ../../gcc/gcc/toplev.cc:2158
> #20 toplev::main (this=this@entry=0x7ffe062c1f2e, argc=<optimized out>, 
> argc@entry=78, argv=<optimized out>, argv@entry=0x7ffe062c2058) at 
> ../../gcc/gcc/toplev.cc:2314
> #21 0x000000000083ad9e in main (argc=78, argv=0x7ffe062c2058) at 
> ../../gcc/gcc/main.cc:39
> 
> (Loop is based in process_bb_lives(), looping in the
> FOR_BB_INSNS_REVERSE_SAFE (bb, curr_insn, next) block starting at
> about line 696.)

MfG, JBG

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