add more -O0 builds

x86 -O0 codegen has come up as an issue in,
and it'd be good to keep on top of how GCC and Clang both do,
for both 32-bit and 64-bit x86.

Bug: chromium:974542
Change-Id: I8bd212e240f72a305bda26d05912058c15d42ad9
Auto-Submit: Mike Klein <>
Commit-Queue: Brian Osman <>
Reviewed-by: Brian Osman <>
4 files changed