[Bug inline-asm/38925] gcc ignores use of %rbp via assembly, generates bad code

["egallager at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=38925

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |egallager at gcc dot gnu.org

--- Comment #11 from Eric Gallager <egallager at gcc dot gnu.org> ---
When I compile the testcase on i386-apple-darwin9.8.0, I get: 

$ /usr/local/bin/gcc -m64 -c 38925.c
38925.c:76:1: warning: always_inline function might not be inlinable
[-Wattributes]
 VMRUN(uint64 vmcb)
 ^~~~~
38925.c: In function ‘test_function’:
38925.c:116:1: error: bp cannot be used in asm here
 }
 ^
$

After adding an additional 'inline' to the testcase to silence the -Wattributes
warning, with any optimization level (-O1, -O2, -O3, -Os, -Og, -Ofast) I then
get:

$ /usr/local/bin/gcc -m64 -O2 -c 38925.c
38925.c:93:no such instruction: `vmrun'
$ 

So I can't confirm, but I'm assuming that's because I'm not using the right
kind of computer...