104 lines
4.0 KiB
Diff
104 lines
4.0 KiB
Diff
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--- mpich-3.4.1/src/mpl/configure.ac~ 2021-01-20 19:04:56.000000000 +0100
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+++ mpich-3.4.1/src/mpl/configure.ac 2021-05-17 09:45:20.178904241 +0200
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@@ -426,99 +426,7 @@
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linux86_cycle|linux86_cycle_2)
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-# The following AC_TRY_RUN statements are needed because x86_64 compilers
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-# usually know about rdtscp but the cpu may or may not actually implement the
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-# feature. This is not cross-compile safe, unfortunately. In the long run we
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-# should allow the user to override this with a configure flag.
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- AC_CACHE_CHECK([that linux86 cycle counter is available],
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- pac_cv_linux86_cycle,
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- AC_TRY_RUN([
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-int main()
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-{
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- /* rdtscp */
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- long long var, *var_ptr=&var;
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- __asm__ __volatile__("rdtscp; shl \$32, %%rdx; or %%rdx, %%rax" : "=a" (*var_ptr) : : "ecx", "rdx");
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- return 0;
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-}
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- ],pac_cv_linux86_cycle=rdtscp,
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- AC_TRY_RUN([[
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-int main()
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-{
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- /* cpuid 64 */
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- long long var, *var_ptr=&var;
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- __asm__ __volatile__("push %%rbx ; cpuid ; rdtsc ; pop %%rbx ; shl $32, %%rdx; or %%rdx, %%rax" : "=a" (*var_ptr) : : "ecx", "rdx");
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- return 0;
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-}
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- ]],pac_cv_linux86_cycle=cpuid_rdtsc64,
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- AC_TRY_RUN([[[
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-int main()
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-{
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- /* cpuid 32 */
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- long long var, *var_ptr=&var;
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- __asm__ __volatile__("push %%ebx ; cpuid ; rdtsc ; pop %%ebx" : "=A" (*var_ptr) : : "ecx");
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- return 0;
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-}
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- ]]],pac_cv_linux86_cycle=cpuid_rdtsc32,
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- AC_TRY_RUN([[[[
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-int main()
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-{
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- /* simple */
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- long long var, *var_ptr=&var;
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- __asm__ __volatile__("rdtsc" : "=A" (*var_ptr));
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- return 0;
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-}
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- ]]]],pac_cv_linux86_cycle=rdtsc,
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- pac_cv_linux86_cycle=no)
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- )
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- ),
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-dnl The if-cross-compiling clause from the first AC_TRY_RUN. Hope that if the
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-dnl compiler knows about the instruction then it's supported by the target
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-dnl platform.
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- AC_TRY_COMPILE(,[[
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- long long var, *var_ptr=&var;
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- __asm__ __volatile__("rdtscp; shl \$32, %%rdx; or %%rdx, %%rax" : "=a" (*var_ptr) : : "ecx", "rdx");
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- ]],pac_cv_linux86_cycle=rdtscp,
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- AC_TRY_COMPILE(,[[[
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- long long var, *var_ptr=&var;
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- __asm__ __volatile__("push %%rbx ; cpuid ; rdtsc ; pop %%rbx ; shl $32, %%rdx; or %%rdx, %%rax" : "=a" (*var_ptr) : : "ecx", "rdx");
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- ]]],pac_cv_linux86_cycle=cpuid_rdtsc64,
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- AC_TRY_COMPILE(,[[[[
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- long long var, *var_ptr=&var;
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- __asm__ __volatile__("push %%ebx ; cpuid ; rdtsc ; pop %%ebx" : "=A" (*var_ptr) : : "ecx");
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- ]]]],pac_cv_linux86_cycle=cpuid_rdtsc32,
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- AC_TRY_COMPILE(,[[[[[
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- long long var, *var_ptr=&var;
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- __asm__ __volatile__("rdtsc" : "=A" (*var_ptr));
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- ]]]]],pac_cv_linux86_cycle=rdtsc,
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- pac_cv_linux86_cycle=no)
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- )
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- )
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- )
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- )
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- )
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-
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- case "$pac_cv_linux86_cycle" in
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- "rdtscp")
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- AC_DEFINE(LINUX86_CYCLE_RDTSCP,1,[Define which x86 cycle counter to use])
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- ;;
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- "cpuid_rdtsc64")
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- AC_DEFINE(LINUX86_CYCLE_CPUID_RDTSC64,1,[Define which x86 cycle counter to use])
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- ;;
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- "cpuid_rdtsc32")
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- AC_DEFINE(LINUX86_CYCLE_CPUID_RDTSC32,1,[Define which x86 cycle counter to use])
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- ;;
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- "rdtsc")
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- AC_DEFINE(LINUX86_CYCLE_RDTSC,1,[Define which x86 cycle counter to use])
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- ;;
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- *)
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- cpu_gcc_x86_cycle=no
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- ;;
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- esac
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-
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- if test "$cpu_gcc_x86_cycle" = "no" ; then
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- AC_MSG_ERROR([Linux86 cycle counter is not available on this system and or with the $CC compiler])
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- fi
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- MPL_TIMER_TYPE="long long"
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+ AC_MSG_ERROR([Linux86 cycle counter is not available])
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;;
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gcc_ia64_cycle)
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