124654232c
Sync patch from openeuler/gcc (cherry picked from commit 95427adf7d16bbb61ae3ced9c64aacbaf53dce72)
115 lines
3.2 KiB
Diff
115 lines
3.2 KiB
Diff
From 2f0d0b1298fb9c3266bb102796b027a5570ad833 Mon Sep 17 00:00:00 2001
|
|
From: dingguangya <dingguangya1@huawei.com>
|
|
Date: Mon, 4 Sep 2023 16:27:38 +0800
|
|
Subject: [PATCH 1/2] [AArch64] Rewrite the tsv110 option
|
|
|
|
Reset the more appropriate options for tsv110.
|
|
---
|
|
gcc/common/config/aarch64/aarch64-common.cc | 76 +++++++++++++++++++++
|
|
1 file changed, 76 insertions(+)
|
|
|
|
diff --git a/gcc/common/config/aarch64/aarch64-common.cc b/gcc/common/config/aarch64/aarch64-common.cc
|
|
index dfda5b837..85ce8133b 100644
|
|
--- a/gcc/common/config/aarch64/aarch64-common.cc
|
|
+++ b/gcc/common/config/aarch64/aarch64-common.cc
|
|
@@ -44,6 +44,8 @@
|
|
#undef TARGET_OPTION_INIT_STRUCT
|
|
#define TARGET_OPTION_INIT_STRUCT aarch64_option_init_struct
|
|
|
|
+#define INVALID_IMP ((unsigned) -1)
|
|
+
|
|
/* Set default optimization options. */
|
|
static const struct default_options aarch_option_optimization_table[] =
|
|
{
|
|
@@ -65,6 +67,77 @@ static const struct default_options aarch_option_optimization_table[] =
|
|
{ OPT_LEVELS_NONE, 0, NULL, 0 }
|
|
};
|
|
|
|
+/* CPU vendor id. */
|
|
+static unsigned vendor_id = INVALID_IMP;
|
|
+
|
|
+/* The part number of the CPU. */
|
|
+static unsigned part_id = INVALID_IMP;
|
|
+
|
|
+/* Return the hex integer that is after ':' for the FIELD.
|
|
+ Return -1 if there was problem parsing the integer. */
|
|
+static unsigned
|
|
+parse_cpuinfo (char *field)
|
|
+{
|
|
+ if (field == NULL)
|
|
+ return INVALID_IMP;
|
|
+ const char *rest = strchr (field, ':');
|
|
+
|
|
+ if (rest == NULL)
|
|
+ return INVALID_IMP;
|
|
+
|
|
+ char *after;
|
|
+ unsigned fint = strtol (rest + 1, &after, 16);
|
|
+ if (after == rest + 1)
|
|
+ return INVALID_IMP;
|
|
+ return fint;
|
|
+}
|
|
+
|
|
+/* Read CPU vendor_id and part_id. */
|
|
+
|
|
+static void
|
|
+read_cpuinfo ()
|
|
+{
|
|
+ FILE *fp = fopen ("/proc/cpuinfo", "r");
|
|
+ if (fp == NULL)
|
|
+ return;
|
|
+
|
|
+ /* Read 1024-byte data from /proc/cpuinfo. */
|
|
+ char cpuinfo[1024];
|
|
+ fread(cpuinfo, sizeof(char), sizeof(cpuinfo) - 1, fp);
|
|
+
|
|
+ char *vendor = strstr(cpuinfo, "CPU implementer");
|
|
+ vendor_id = parse_cpuinfo(vendor);
|
|
+
|
|
+ char *part = strstr(cpuinfo, "CPU part");
|
|
+ part_id = parse_cpuinfo(part);
|
|
+
|
|
+ fclose(fp);
|
|
+}
|
|
+
|
|
+/* Reset the tsv110 option. After checking the platform information,
|
|
+ this function can reset the more appropriate options.
|
|
+ TODO: Currently, this function is not applicable to the cross
|
|
+ compilation scenario. */
|
|
+
|
|
+static void
|
|
+reset_tsv110_option ()
|
|
+{
|
|
+ /* Read CPU Information. */
|
|
+ if (vendor_id == INVALID_IMP)
|
|
+ read_cpuinfo ();
|
|
+
|
|
+ if (vendor_id == 0x48 && part_id == 0xd01)
|
|
+ {
|
|
+ /* Outline-atomics is enabled by default and
|
|
+ aarch64_flag_outline_atomics defaults to 2. Therefore, the current
|
|
+ modification affects only the default scenario. When the option
|
|
+ moutline-atomics is added, the value of aarch64_flag_outline_atomics is 1,
|
|
+ that is, aarch64_flag_outline_atomics is not reset to 0. */
|
|
+ if (aarch64_flag_outline_atomics == 2)
|
|
+ aarch64_flag_outline_atomics = 0;
|
|
+ }
|
|
+}
|
|
+
|
|
/* Implement TARGET_HANDLE_OPTION.
|
|
This function handles the target specific options for CPU/target selection.
|
|
|
|
@@ -83,6 +156,9 @@ aarch64_handle_option (struct gcc_options *opts,
|
|
const char *arg = decoded->arg;
|
|
int val = decoded->value;
|
|
|
|
+ /* Reset the tsv110 options. */
|
|
+ reset_tsv110_option ();
|
|
+
|
|
switch (code)
|
|
{
|
|
case OPT_march_:
|
|
--
|
|
2.33.0
|
|
|