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Optimise scopy for POWER9 

Use lxvd2x instruction instead of lxvw4x.
lxvd2x performs far better on the new POWER architecture than lxvw4x.
This commit is contained in:
Matt Brown 2017-06-14 14:58:00 +10:00
parent 96dd0ef4f7
commit be55f96cbd
1 changed files with 32 additions and 32 deletions
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64
kernel/power/scopy_microk_power8.c
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@ -39,14 +39,14 @@ static void scopy_kernel_32 (long n, float *x, float *y)
{ {
__asm__ __asm__
( (
"lxvw4x 40, 0, %2 \n\t" "lxvd2x 40, 0, %2 \n\t"
"lxvw4x 41, %5, %2 \n\t" "lxvd2x 41, %5, %2 \n\t"
"lxvw4x 42, %6, %2 \n\t" "lxvd2x 42, %6, %2 \n\t"
"lxvw4x 43, %7, %2 \n\t" "lxvd2x 43, %7, %2 \n\t"
"lxvw4x 44, %8, %2 \n\t" "lxvd2x 44, %8, %2 \n\t"
"lxvw4x 45, %9, %2 \n\t" "lxvd2x 45, %9, %2 \n\t"
"lxvw4x 46, %10, %2 \n\t" "lxvd2x 46, %10, %2 \n\t"
"lxvw4x 47, %11, %2 \n\t" "lxvd2x 47, %11, %2 \n\t"
"addi %2, %2, 128 \n\t" "addi %2, %2, 128 \n\t"
@ -56,22 +56,22 @@ static void scopy_kernel_32 (long n, float *x, float *y)
".p2align 5 \n" ".p2align 5 \n"
"1: \n\t" "1: \n\t"
"stxvw4x 40, 0, %3 \n\t" "stxvd2x 40, 0, %3 \n\t"
"stxvw4x 41, %5, %3 \n\t" "stxvd2x 41, %5, %3 \n\t"
"lxvw4x 40, 0, %2 \n\t" "lxvd2x 40, 0, %2 \n\t"
"lxvw4x 41, %5, %2 \n\t" "lxvd2x 41, %5, %2 \n\t"
"stxvw4x 42, %6, %3 \n\t" "stxvd2x 42, %6, %3 \n\t"
"stxvw4x 43, %7, %3 \n\t" "stxvd2x 43, %7, %3 \n\t"
"lxvw4x 42, %6, %2 \n\t" "lxvd2x 42, %6, %2 \n\t"
"lxvw4x 43, %7, %2 \n\t" "lxvd2x 43, %7, %2 \n\t"
"stxvw4x 44, %8, %3 \n\t" "stxvd2x 44, %8, %3 \n\t"
"stxvw4x 45, %9, %3 \n\t" "stxvd2x 45, %9, %3 \n\t"
"lxvw4x 44, %8, %2 \n\t" "lxvd2x 44, %8, %2 \n\t"
"lxvw4x 45, %9, %2 \n\t" "lxvd2x 45, %9, %2 \n\t"
"stxvw4x 46, %10, %3 \n\t" "stxvd2x 46, %10, %3 \n\t"
"stxvw4x 47, %11, %3 \n\t" "stxvd2x 47, %11, %3 \n\t"
"lxvw4x 46, %10, %2 \n\t" "lxvd2x 46, %10, %2 \n\t"
"lxvw4x 47, %11, %2 \n\t" "lxvd2x 47, %11, %2 \n\t"
"addi %3, %3, 128 \n\t" "addi %3, %3, 128 \n\t"
"addi %2, %2, 128 \n\t" "addi %2, %2, 128 \n\t"
@ -81,14 +81,14 @@ static void scopy_kernel_32 (long n, float *x, float *y)
"2: \n\t" "2: \n\t"
"stxvw4x 40, 0, %3 \n\t" "stxvd2x 40, 0, %3 \n\t"
"stxvw4x 41, %5, %3 \n\t" "stxvd2x 41, %5, %3 \n\t"
"stxvw4x 42, %6, %3 \n\t" "stxvd2x 42, %6, %3 \n\t"
"stxvw4x 43, %7, %3 \n\t" "stxvd2x 43, %7, %3 \n\t"
"stxvw4x 44, %8, %3 \n\t" "stxvd2x 44, %8, %3 \n\t"
"stxvw4x 45, %9, %3 \n\t" "stxvd2x 45, %9, %3 \n\t"
"stxvw4x 46, %10, %3 \n\t" "stxvd2x 46, %10, %3 \n\t"
"stxvw4x 47, %11, %3 \n" "stxvd2x 47, %11, %3 \n"
"#n=%1 x=%4=%2 y=%0=%3 o16=%5 o32=%6 o48=%7 o64=%8 o80=%9 o96=%10 o112=%11" "#n=%1 x=%4=%2 y=%0=%3 o16=%5 o32=%6 o48=%7 o64=%8 o80=%9 o96=%10 o112=%11"
: :