set -msse2 on clang.m32 builds

If this isn't set on Linux we get subtle and confusing x87 float
comparison failures when running out/clang.m32/tests.

I guess I've only ever run this on Mac before, which I think sets
-msse4.1 by default.  Unclear why the bots are happy.

Change-Id: Ib6b5dcc746f045e78d60e6c22061e1a924150824
Commit-Queue: Brian Osman <>
Auto-Submit: Mike Klein <>
Reviewed-by: Brian Osman <>
1 file changed