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Re-format zen memcpy/memset costs. 

The patch improves readability of the memcpy and memset
expansion strategies.

gcc/ChangeLog:

	* config/i386/x86-tune-costs.h: Change code formatting.
This commit is contained in:
Martin Liska 2020-06-01 11:21:33 +02:00
parent 2c58f5cadf
commit da346efd27
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GPG Key ID: 4DC182DC0FA73785
1 changed files with 28 additions and 10 deletions
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38
gcc/config/i386/x86-tune-costs.h
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@ -1311,14 +1311,23 @@ const struct processor_costs bdver_cost = {
very small blocks it is better to use loop. For large blocks, libcall
can do nontemporary accesses and beat inline considerably. */
static stringop_algs znver1_memcpy[2] = {
{libcall, {{6, loop, false}, {14, unrolled_loop, false},
/* 32-bit tuning. */
{libcall, {{6, loop, false},
{14, unrolled_loop, false},
{-1, rep_prefix_4_byte, false}}},
{libcall, {{16, loop, false}, {8192, rep_prefix_8_byte, false},
/* 64-bit tuning. */
{libcall, {{16, loop, false},
{8192, rep_prefix_8_byte, false},
{-1, libcall, false}}}};
static stringop_algs znver1_memset[2] = {
{libcall, {{8, loop, false}, {24, unrolled_loop, false},
{2048, rep_prefix_4_byte, false}, {-1, libcall, false}}},
{libcall, {{48, unrolled_loop, false}, {8192, rep_prefix_8_byte, false},
/* 32-bit tuning. */
{libcall, {{8, loop, false},
{24, unrolled_loop, false},
{2048, rep_prefix_4_byte, false},
{-1, libcall, false}}},
/* 64-bit tuning. */
{libcall, {{48, unrolled_loop, false},
{8192, rep_prefix_8_byte, false},
{-1, libcall, false}}}};
struct processor_costs znver1_cost = {
{
@ -1448,14 +1457,23 @@ struct processor_costs znver1_cost = {
very small blocks it is better to use loop. For large blocks, libcall
can do nontemporary accesses and beat inline considerably. */
static stringop_algs znver2_memcpy[2] = {
{libcall, {{6, loop, false}, {14, unrolled_loop, false},
/* 32-bit tuning. */
{libcall, {{6, loop, false},
{14, unrolled_loop, false},
{-1, rep_prefix_4_byte, false}}},
{libcall, {{16, loop, false}, {64, rep_prefix_4_byte, false},
/* 64-bit tuning. */
{libcall, {{16, loop, false},
{64, rep_prefix_4_byte, false},
{-1, libcall, false}}}};
static stringop_algs znver2_memset[2] = {
{libcall, {{8, loop, false}, {24, unrolled_loop, false},
{2048, rep_prefix_4_byte, false}, {-1, libcall, false}}},
{libcall, {{24, rep_prefix_4_byte, false}, {128, rep_prefix_8_byte, false},
/* 32-bit tuning. */
{libcall, {{8, loop, false},
{24, unrolled_loop, false},
{2048, rep_prefix_4_byte, false}
{-1, libcall, false}}},
/* 64-bit tuning. */
{libcall, {{24, rep_prefix_4_byte, false},
{128, rep_prefix_8_byte, false},
{-1, libcall, false}}}};
struct processor_costs znver2_cost = {