From: Martin Liska <mliska@suse.cz>
Date: Mon, 1 Jun 2020 09:21:33 +0000 (+0200)
Subject: Re-format zen memcpy/memset costs.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=da346efd27eca48a8fe2e07d7e18b2c77ead0e2d;p=gcc.git

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.
---

diff --git a/gcc/config/i386/x86-tune-costs.h b/gcc/config/i386/x86-tune-costs.h
index c73917e5a62..1169178433f 100644
--- a/gcc/config/i386/x86-tune-costs.h
+++ b/gcc/config/i386/x86-tune-costs.h
@@ -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 = {