[Bug ipa/59469] [4.8/4.9 Regression] LLVM build failure with gcc LTO

steven at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Sun Dec 15 23:12:00 GMT 2013


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59469

--- Comment #18 from Steven Bosscher <steven at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #8)
> OK, the unmangled name of symbol is:
> 000000000004c8c0 T
> _ZN4llvm21SymbolTableListTraitsINS_10BasicBlockENS_8FunctionEE21transferNodes
> FromListERNS_12ilist_traitsIS1_EENS_14ilist_iteratorIS1_EES8_
> 
> and obviously for me it is T for -O2 and for -O3 it is optimized out.  Both
> seems legitimate. Can you please re-check with current mainline?
> 
> I get:
>  df live regs            :   7.74 (12%) usr   0.00 ( 0%) sys   7.72 (12%)
> wall       0 kB ( 0%) ggc
>  df live&initialized regs:  11.02 (17%) usr   0.00 ( 0%) sys  10.91 (17%)
> wall       0 kB ( 0%) ggc
>  CPROP                   :  20.03 (32%) usr   0.44 (65%) sys  20.51 (32%)
> wall    7968 kB ( 5%) ggc
> 
> (with checking on, but still seems something for steve, I do not think there
> is particularly expensive checking in CPROP)
> 
> I am re-checking with 4.8

I can't reproduce this.
What platform is this? What is the command line?



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