https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100461
Bug ID: 100461
Summary: [11/12 Regression] mingw build broken due to change of
rdtsc implementation
Product: gcc
Version: 11.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: daniel.f.starke at freenet dot de
Target Milestone: ---
GCC 11.1.0 build for mingw-w64 is broken now. Up to 10.3.0 the following was
used in gcc/config/i386/ia32intrin.h:
extern __inline unsigned long long
__attribute__((__gnu_inline__, __always_inline__, __artificial__))
__rdtsc (void)
{
return __builtin_ia32_rdtsc ();
}
extern __inline unsigned long long
__attribute__((__gnu_inline__, __always_inline__, __artificial__))
__rdtscp (unsigned int *__A)
{
return __builtin_ia32_rdtscp (__A);
}
but now we have just
#define __rdtsc() __builtin_ia32_rdtsc ()
#define __rdtscp(a) __builtin_ia32_rdtscp (a)
Changing this back fixes the build.
See also mingw-w64 7.0.0 at mingw-w64-crt/intrincs/rdtsc.c.
