47 lines
1.7 KiB
Diff
47 lines
1.7 KiB
Diff
From 90d3ef0637c66045eeab78ccf04e9ff51b9b451a Mon Sep 17 00:00:00 2001
|
|
From: xiongzhou4 <xiongzhou4@huawei.com>
|
|
Date: Thu, 1 Jun 2023 09:28:27 +0800
|
|
Subject: [PATCH 5/5] [PGO kernel] Add fkernel-pgo option to support PGO kernel
|
|
compilation.
|
|
|
|
If specified, disable TLS setting of instrumentation variables in
|
|
gcc/tree-profile.c, as kernel does not support TLS.
|
|
---
|
|
gcc/common.opt | 4 ++++
|
|
gcc/tree-profile.c | 4 +++-
|
|
2 files changed, 7 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/gcc/common.opt b/gcc/common.opt
|
|
index 238c97db8..6f0ed7cea 100644
|
|
--- a/gcc/common.opt
|
|
+++ b/gcc/common.opt
|
|
@@ -2302,6 +2302,10 @@ fprofile-generate=
|
|
Common Joined RejectNegative
|
|
Enable common options for generating profile info for profile feedback directed optimizations, and set -fprofile-dir=.
|
|
|
|
+fkernel-pgo
|
|
+Common Report Var(flag_kernel_pgo) Optimization Init(0)
|
|
+Disable TLS setting of instrumentation variables to support PGO kernel compilation in -fprofile-generate, as kernel does not support TLS.
|
|
+
|
|
fprofile-partial-training
|
|
Common Report Var(flag_profile_partial_training) Optimization
|
|
Do not assume that functions never executed during the train run are cold.
|
|
diff --git a/gcc/tree-profile.c b/gcc/tree-profile.c
|
|
index 6c0838261..924817472 100644
|
|
--- a/gcc/tree-profile.c
|
|
+++ b/gcc/tree-profile.c
|
|
@@ -105,7 +105,9 @@ init_ic_make_global_vars (void)
|
|
DECL_ARTIFICIAL (ic_tuple_var) = 1;
|
|
DECL_INITIAL (ic_tuple_var) = NULL;
|
|
DECL_EXTERNAL (ic_tuple_var) = 1;
|
|
- if (targetm.have_tls)
|
|
+ /* Disable TLS setting when compiling kernel in -fprofile-generate,
|
|
+ as kernel does not support TLS. */
|
|
+ if (targetm.have_tls && !flag_kernel_pgo)
|
|
set_decl_tls_model (ic_tuple_var, decl_default_tls_model (ic_tuple_var));
|
|
}
|
|
|
|
--
|
|
2.33.0
|
|
|