https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63281
--- Comment #20 from Jiu Fu Guo <guojiufu at gcc dot gnu.org> --- Created attachment 52114 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52114&action=edit testcases With these test cases, invoke 'foo' in these cases 1000,000,000 times, to see the runtime: building 'constant' through 1 insn is fastest. next faster is building const by 2 instructions, or loading from rodata, or loading from toc. building const by 3 instructions is slower than loading from rodata, building const by 5 ins is slowest.
