This commit makes two changes:
- Remove the push and pop instructions that were saving and restoring %ebx
before and after cpuid in 32-bit pic mode. We were doing this to ensure we
don't lose the GOT address in pic register %ebx, but this isn't necessary
because the GOT address is kept in a virtual register.
- In 64-bit mode, preserve base register %rbx around cpuid.
This fixes PR20311 and rdar://problem/17686779.
llvm-svn: 218173
__cpuid_count() as macros to be compatible with GCC's cpuid.h. It also adds
bit_<foo> constants for the various feature bits as described in version 039
(May 2011) of Intel's SDM Volume 2 in the description of the CPUID
instruction. The list of bit_<foo> constants is a bit exhaustive (GCC
doesn't do near this many). More bits could be added from a newer version of
SDM if desired.
Patch by John Baldwin!
llvm-svn: 186696
Several of the intrinsic headers were using plain non-reserved identifiers.
C++11 17.6.4.3.2 [global.names] p1 reservers names containing a double
begining with an underscore followed by an uppercase letter for any use.
I think I got them all, but open to being corrected. For the most part I
didn't bother updating function-like macro parameter names because I don't
believe they're subject to any such collission - though some function-like
macros already follow this convention (I didn't update them in part because
the churn was more significant as several function-like macros use the double
underscore prefixed version of the same name as a parameter in their
implementation)
llvm-svn: 172666
While we're here, extend the module map to cover most of the
newly-added instrinsic headers. Only wmmintrin.h is missing, because
it needs to be split into AES/PCLMUL subheaders (as a separate commit).
llvm-svn: 167398
Joerg Sonnenberger