abi_check.cc (original) (raw)

Description Kazumoto Kojima 2004-04-23 14:03:50 UTC

3.4.0 fails to bootstrap on sh4-unknown-linux-gnu because of the hang-up when compiling libstdc++-v3/testsuite/abi_check.cc. It seems that the i686-linux x sh4-unknown-linux-gnu behaves same as the native compiler and with -fno-unit-at-a-time both native and cross cc1plus compiles abi_check.cc normally.

FYI, when it looks halting, cross cc1plus takes almost cpu time:

PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME COMMAND 5565 kkojima 17 0 54656 53M 3376 R 99.5 21.3 45:02 cc1plus

and gdb attatched to it says

#0 0x080e1b18 in bitmap_set_bit (head=0x86acfa0, bit=394) at ../../LOCAL/gcc-3.4/gcc/bitmap.c:310 #1 0x0815f13e in mark_set_1 (pbi=0x848e8d8, code=SET, reg=0x417e9ff0, cond=0x0, insn=0x411caf78, flags=16) at ../../LOCAL/gcc-3.4/gcc/flow.c:2673 #2 0x0815eaae in mark_set_regs (pbi=0x848e8d8, x=0x42245024, insn=0x411caf78) at ../../LOCAL/gcc-3.4/gcc/flow.c:2468 #3 0x0815db01 in propagate_one_insn (pbi=0x848e8d8, insn=0x411caf78) at ../../LOCAL/gcc-3.4/gcc/flow.c:1667 #4 0x0815e21b in propagate_block (bb=0x851fec8, live=0xbfffef9c, local_set=0x84f54f8, cond_local_set=0x84f5508, flags=16) at ../../LOCAL/gcc-3.4/gcc/flow.c:2036 #5 0x0815d146 in calculate_global_regs_live (blocks_in=0x86acf20, blocks_out=0x86acf20, flags=16) at ../../LOCAL/gcc-3.4/gcc/flow.c:1275 #6 0x0815c1d7 in update_life_info (blocks=0x86acf20, extent=UPDATE_LIFE_GLOBAL_RM_NOTES, prop_flags=25) at ../../LOCAL/gcc-3.4/gcc/flow.c:624 #7 0x0815c690 in update_life_info_in_dirty_blocks ( extent=UPDATE_LIFE_GLOBAL_RM_NOTES, prop_flags=25) at ../../LOCAL/gcc-3.4/gcc/flow.c:776 #8 0x0829ffaf in combine_instructions (f=0x40bd00a0, nregs=397) at ../../LOCAL/gcc-3.4/gcc/combine.c:742 #9 0x0825dd2d in rest_of_handle_combine (decl=0x41747244, insns=0x40bd00a0)

Comment 1 Drea Pinski 2004-04-23 15:14:56 UTC

This looks like an optimization problem.

Comment 3 Giovanni Bajo 2004-04-30 09:17:01 UTC

Thank you for the patch. Please, in future assign the bug to you when you have a patch.

Comment 4 Giovanni Bajo 2004-04-30 09:17:55 UTC

Do you know if the bug is present also on the 3.3 branch or on mainline?

Comment 5 Kazumoto Kojima 2004-04-30 10:58:45 UTC

The mainline (20040425 x86-linux cross to sh4-linux) also hangs on .i file got from 3.4.0 abi_check.cc. Unfortunately, same .i file can't be compiled on 3.3-branch for another reasons like new attribute expression and I don't have any appropriate testcase for this PR against 3.3-branch ATM.

Comment 6 Giovanni Bajo 2004-04-30 12:41:09 UTC

Can you attacch the precompiled file to this report for completeness? Maybe someone will have time to reduce this, making it possible to test it on 3.3.

Comment 8 Kazumoto Kojima 2004-04-30 13:42:47 UTC

I've attached a problematic .i file.

Comment 11 Kazumoto Kojima 2004-05-18 10:53:27 UTC

Fixed on 3.4/mainline.