https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111577
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WORKSFORME
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
[apinski@xeond2 gcc]$ ~/upstream-gcc/bin/g++ -Os -std=c++2b -march=skylake
-m64 t.cc
[apinski@xeond2 gcc]$ size -A a.out
a.out :
section size addr
.interp 28 4195096
.note.gnu.property 32 4195128
.note.ABI-tag 32 4195160
.hash 76 4195192
.gnu.hash 52 4195272
.dynsym 336 4195328
.dynstr 494 4195664
.gnu.version 28 4196158
.gnu.version_r 144 4196192
.rela.dyn 48 4196336
.rela.plt 192 4196384
.init 27 4198400
.plt 144 4198432
.text 1341 4198576
.fini 13 4199920
.rodata 99 4202496
.eh_frame_hdr 92 4202596
.eh_frame 440 4202688
.gcc_except_table 29 4203128
.init_array 8 4210128
.fini_array 8 4210136
.dynamic 528 4210144
.got 16 4210672
.got.plt 88 4210688
.data 16 4210776
.bss 8 4210792
.comment 108 0
.gnu.build.attributes 7368 4218992
Total 11795
[apinski@xeond2 gcc]$ ~/upstream-gcc/bin/g++ -O0 -std=c++2b -march=skylake
-m64 t.cc
[apinski@xeond2 gcc]$ size -A a.out
a.out :
section size addr
.interp 28 4195096
.note.gnu.property 32 4195128
.note.ABI-tag 32 4195160
.hash 368 4195192
.gnu.hash 356 4195560
.dynsym 1272 4195920
.dynstr 3067 4197192
.gnu.version 106 4200260
.gnu.version_r 176 4200368
.rela.dyn 48 4200544
.rela.plt 264 4200592
.init 27 4202496
.plt 192 4202528
.text 6162 4202720
.fini 13 4208884
.rodata 106 4210688
.eh_frame_hdr 548 4210796
.eh_frame 2276 4211344
.gcc_except_table 85 4213620
.init_array 8 4218320
.fini_array 8 4218328
.dynamic 528 4218336
.got 16 4218864
.got.plt 112 4218880
.data 16 4218992
.bss 8 4219008
.comment 108 0
.gnu.build.attributes 7368 4227208
Total 23330
For me on the trunk with the correct output -Os is smaller. 1341 vs 6162 for
the text size.
