[Bug target/99600] [11 regression] out of memory for simple test case (x86 -march=atom)

arnd at linaro dot org gcc-bugzilla@gcc.gnu.org
Mon Mar 15 14:26:05 GMT 2021


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99600

Arnd Bergmann <arnd at linaro dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at redhat dot com

--- Comment #2 from Arnd Bergmann <arnd at linaro dot org> ---
perf shows these functions as the most commonly called ones, presumably it's
looping through all of those:

   5.39%  cc1  cc1                [.] df_ref_create_structure                   
   5.33%  cc1  cc1                [.] df_uses_record                            
   4.41%  cc1  cc1                [.] ggc_internal_alloc                        
   3.41%  cc1  cc1                [.] df_ref_record                             
   2.79%  cc1  cc1                [.] peephole2_insns                           
   2.69%  cc1  cc1                [.] ix86_lea_outperforms                      
   2.58%  cc1  cc1                [.] df_insn_rescan                            
   2.33%  cc1  cc1                [.] df_sort_and_compress_refs                 
   2.05%  cc1  cc1                [.] df_free_ref                               

This recent change touches ix86_lea_outperforms, could be related:
https://github.com/gcc-mirror/gcc/commit/decd8fb01288


More information about the Gcc-bugs mailing list