[Bug rtl-optimization/67305] [6 Regression] gcc.c-torture/compile/20121027-1.c ICE

jiwang at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Fri Aug 28 15:33:00 GMT 2015


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67305

--- Comment #4 from Jiong Wang <jiwang at gcc dot gnu.org> ---
And the very complicated address is generated by combine pass, it runs very
happy by doing the following serious of combination:

Trying 22, 23 -> 24
Successfully matched this instruction
Trying 20 -> 24:
Successfully matched this instruction
Trying 19 -> 24:
Successfully matched this instruction
Trying 17 -> 24:
Successfully matched this instruction
Trying 24 -> 25:
Successfully matched this instruction

So, it has combined eight instructions into one...



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