[Bug target/81516] Wrong code with -m32 -O2 on x86_64-linux-gnu

[mednafen at sent dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81516

--- Comment #5 from mednafen at sent dot com ---
Generated assembly looks like it's grabbing garbage off the stack and writing
it to b:

a:
        subl    $20, %esp
        fildl   24(%esp)
        movsd   (%esp), %xmm1
        movsd   %xmm1, b
        [...]