[Bug target/63304] Aarch64 pc-relative load offset out of range

[david.abdurachmanov at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63304

--- Comment #13 from David Abdurachmanov <david.abdurachmanov at gmail dot com> ---
Created attachment 34416
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34416&action=edit
31-lines, minimal testcase

I am adding 31-lines minimal testcase. Should be good enough for GCC testsuite.

$ gcc -O0 -c pr63304-testcase.c
/tmp/ccKdBqsL.s: Assembler messages:
/tmp/ccKdBqsL.s:58: Error: pc-relative load offset out of range
/tmp/ccKdBqsL.s:62: Error: pc-relative load offset out of range

Yesterday I looked into RTL output and assembly of some failures for OpenLoops.
The function was 400+K lines in assembly. On x86_64 it was something 180+K
lines of assembly and ~1.3MB for function body size.

I can confirm that offset is above 1MB mark and it was trying to load
__float128/long double to q1 from constant pool for passing to `addtf3`.