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8186461: Zero's atomic_copy64() should use SPE instructions on linux-powerpcspe

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Reviewed-by: aph
This commit is contained in:
John Paul Adrian Glaubitz 2017-11-24 12:16:25 +01:00
parent b76a492de1
commit 39de42151a
1 changed files with 7 additions and 1 deletions
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8
src/hotspot/os_cpu/linux_zero/os_linux_zero.hpp
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@ -36,12 +36,18 @@
// Atomically copy 64 bits of data
static void atomic_copy64(const volatile void *src, volatile void *dst) {
#if defined(PPC32)
#if defined(PPC32) && !defined(__SPE__)
double tmp;
asm volatile ("lfd %0, %2\n"
"stfd %0, %1\n"
: "=&f"(tmp), "=Q"(*(volatile double*)dst)
: "Q"(*(volatile double*)src));
#elif defined(PPC32) && defined(__SPE__)
long tmp;
asm volatile ("evldd %0, %2\n"
"evstdd %0, %1\n"
: "=&r"(tmp), "=Q"(*(volatile long*)dst)
: "Q"(*(volatile long*)src));
#elif defined(S390) && !defined(_LP64)
double tmp;
asm volatile ("ld %0, 0(%1)\n"