From: Soumya AR <soum...@nvidia.com>
This patch was bootstrapped and regtested on aarch64-linux-gnu, no regression.
Signed-off-by: Soumya AR <soum...@nvidia.com>
gcc/testsuite/ChangeLog:
* gcc.target/aarch64/aarch64-json-tunings/aarch64-json-tunings.exp: New
test.
* gcc.target/aarch64/aarch64-json-tunings/boolean-1.c: New test.
* gcc.target/aarch64/aarch64-json-tunings/boolean-1.json: New test.
* gcc.target/aarch64/aarch64-json-tunings/boolean-2.c: New test.
* gcc.target/aarch64/aarch64-json-tunings/boolean-2.json: New test.
* gcc.target/aarch64/aarch64-json-tunings/empty-brackets.c: New test.
* gcc.target/aarch64/aarch64-json-tunings/empty-brackets.json: New test.
* gcc.target/aarch64/aarch64-json-tunings/empty.c: New test.
* gcc.target/aarch64/aarch64-json-tunings/empty.json: New test.
* gcc.target/aarch64/aarch64-json-tunings/enum-1.c: New test.
* gcc.target/aarch64/aarch64-json-tunings/enum-1.json: New test.
* gcc.target/aarch64/aarch64-json-tunings/enum-2.c: New test.
* gcc.target/aarch64/aarch64-json-tunings/enum-2.json: New test.
* gcc.target/aarch64/aarch64-json-tunings/integer-1.c: New test.
* gcc.target/aarch64/aarch64-json-tunings/integer-1.json: New test.
* gcc.target/aarch64/aarch64-json-tunings/integer-2.c: New test.
* gcc.target/aarch64/aarch64-json-tunings/integer-2.json: New test.
* gcc.target/aarch64/aarch64-json-tunings/integer-3.c: New test.
* gcc.target/aarch64/aarch64-json-tunings/integer-3.json: New test.
* gcc.target/aarch64/aarch64-json-tunings/integer-4.c: New test.
* gcc.target/aarch64/aarch64-json-tunings/integer-4.json: New test.
* gcc.target/aarch64/aarch64-json-tunings/string-1.c: New test.
* gcc.target/aarch64/aarch64-json-tunings/string-1.json: New test.
* gcc.target/aarch64/aarch64-json-tunings/string-2.c: New test.
* gcc.target/aarch64/aarch64-json-tunings/string-2.json: New test.
* gcc.target/aarch64/aarch64-json-tunings/unidentified-key.c: New test.
* gcc.target/aarch64/aarch64-json-tunings/unidentified-key.json: New
test.
---
.../aarch64-json-tunings.exp | 35 +++++++++++++++++++
.../aarch64/aarch64-json-tunings/boolean-1.c | 6 ++++
.../aarch64-json-tunings/boolean-1.json | 9 +++++
.../aarch64/aarch64-json-tunings/boolean-2.c | 7 ++++
.../aarch64-json-tunings/boolean-2.json | 9 +++++
.../aarch64-json-tunings/empty-brackets.c | 6 ++++
.../aarch64-json-tunings/empty-brackets.json | 1 +
.../aarch64/aarch64-json-tunings/empty.c | 6 ++++
.../aarch64/aarch64-json-tunings/empty.json | 0
.../aarch64/aarch64-json-tunings/enum-1.c | 8 +++++
.../aarch64/aarch64-json-tunings/enum-1.json | 7 ++++
.../aarch64/aarch64-json-tunings/enum-2.c | 7 ++++
.../aarch64/aarch64-json-tunings/enum-2.json | 7 ++++
.../aarch64/aarch64-json-tunings/integer-1.c | 7 ++++
.../aarch64-json-tunings/integer-1.json | 6 ++++
.../aarch64/aarch64-json-tunings/integer-2.c | 7 ++++
.../aarch64-json-tunings/integer-2.json | 6 ++++
.../aarch64/aarch64-json-tunings/integer-3.c | 7 ++++
.../aarch64-json-tunings/integer-3.json | 5 +++
.../aarch64/aarch64-json-tunings/integer-4.c | 6 ++++
.../aarch64-json-tunings/integer-4.json | 5 +++
.../aarch64/aarch64-json-tunings/string-1.c | 8 +++++
.../aarch64-json-tunings/string-1.json | 7 ++++
.../aarch64/aarch64-json-tunings/string-2.c | 7 ++++
.../aarch64-json-tunings/string-2.json | 5 +++
.../aarch64-json-tunings/unidentified-key.c | 6 ++++
.../unidentified-key.json | 5 +++
27 files changed, 195 insertions(+)
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/aarch64-json-tunings.exp
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-1.c
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-1.json
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-2.c
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-2.json
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty-brackets.c
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty-brackets.json
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty.c
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty.json
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-1.c
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-1.json
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-2.c
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-2.json
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-1.c
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-1.json
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-2.c
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-2.json
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-3.c
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-3.json
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-4.c
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-4.json
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-1.c
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-1.json
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-2.c
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-2.json
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/unidentified-key.c
create mode 100644
gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/unidentified-key.json
diff --git
a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/aarch64-json-tunings.exp
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/aarch64-json-tunings.exp
new file mode 100644
index 00000000000..974af6d78a2
--- /dev/null
+++
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/aarch64-json-tunings.exp
@@ -0,0 +1,35 @@
+# Copyright (C) 2025 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3. If not see
+# <http://www.gnu.org/licenses/>.
+
+# GCC testsuite that uses the `dg.exp' driver.
+
+# Exit immediately if this isn't an AArch64 target.
+if ![istarget aarch64*-*-*] then {
+ return
+}
+
+# Load support procs.
+load_lib gcc-dg.exp
+
+# Initialize `dg'.
+dg-init
+
+# Main loop.
+dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/*.\[cCS\]]] \
+ "" ""
+
+# All done.
+dg-finish
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-1.c
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-1.c
new file mode 100644
index 00000000000..31801fca6bf
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-1.c
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-additional-options
"-muser-provided-CPU=${srcdir}/gcc.target/aarch64/aarch64-json-tunings/boolean-1.json
-fdump-tuning-model=temp.json" } */
+
+/* { dg-final { scan-file "temp.json" "\"non_exec_costs_exec\": false" } } */
+
+int main () {}
\ No newline at end of file
diff --git
a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-1.json
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-1.json
new file mode 100644
index 00000000000..b7bd3dd4f9a
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-1.json
@@ -0,0 +1,9 @@
+{
+ "tune_params": {
+ "insn_extra_cost": {
+ "alu": {
+ "non_exec_costs_exec": false
+ }
+ }
+ }
+}
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-2.c
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-2.c
new file mode 100644
index 00000000000..f34f5935725
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-2.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-additional-options
"-muser-provided-CPU=${srcdir}/gcc.target/aarch64/aarch64-json-tunings/boolean-2.json
-fdump-tuning-model=temp.json" } */
+
+/* { dg-error "key .* expected to be a boolean" "" { target *-*-* } 0 } */
+/* { dg-error "validation failed for the provided JSON data" "" { target
*-*-* } 0 } */
+
+int main () {}
\ No newline at end of file
diff --git
a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-2.json
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-2.json
new file mode 100644
index 00000000000..d43e5b1a291
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/boolean-2.json
@@ -0,0 +1,9 @@
+{
+ "tune_params": {
+ "insn_extra_cost": {
+ "alu": {
+ "non_exec_costs_exec": 0
+ }
+ }
+ }
+}
diff --git
a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty-brackets.c
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty-brackets.c
new file mode 100644
index 00000000000..e8465ee49d0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty-brackets.c
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-additional-options
"-muser-provided-CPU=${srcdir}/gcc.target/aarch64/aarch64-json-tunings/empty-brackets.json
-fdump-tuning-model=temp.json" } */
+
+/* { dg-warning "key 'tune_params' not found in JSON data" "" { target *-*-*
} 0 } */
+
+int main () {}
\ No newline at end of file
diff --git
a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty-brackets.json
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty-brackets.json
new file mode 100644
index 00000000000..0967ef424bc
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty-brackets.json
@@ -0,0 +1 @@
+{}
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty.c
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty.c
new file mode 100644
index 00000000000..0e722994fff
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty.c
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-additional-options
"-muser-provided-CPU=${srcdir}/gcc.target/aarch64/aarch64-json-tunings/empty.json
-fdump-tuning-model=temp.json" } */
+
+/* { dg-error "expected a JSON value but got EOF" "" { target *-*-* } 0 } */
+
+int main () {}
\ No newline at end of file
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty.json
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/empty.json
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-1.c
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-1.c
new file mode 100644
index 00000000000..a076a51212b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-1.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-additional-options
"-muser-provided-CPU=${srcdir}/gcc.target/aarch64/aarch64-json-tunings/enum-1.json
-fdump-tuning-model=temp.json" } */
+
+/* { dg-final { scan-file "temp.json" "\"autoprefetcher_model\":
\"AUTOPREFETCHER_OFF\"" } } */
+/* { dg-final { scan-file "temp.json" "\"ldp_policy_model\":
\"AARCH64_LDP_STP_POLICY_NEVER\"" } } */
+/* { dg-final { scan-file "temp.json" "\"stp_policy_model\":
\"AARCH64_LDP_STP_POLICY_DEFAULT\"" } } */
+
+int main () {}
\ No newline at end of file
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-1.json
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-1.json
new file mode 100644
index 00000000000..492af1c14e0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-1.json
@@ -0,0 +1,7 @@
+{
+ "tune_params": {
+ "autoprefetcher_model": "AUTOPREFETCHER_OFF",
+ "ldp_policy_model": "AARCH64_LDP_STP_POLICY_NEVER",
+ "stp_policy_model": "AARCH64_LDP_STP_POLICY_DEFAULT"
+ }
+}
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-2.c
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-2.c
new file mode 100644
index 00000000000..0c5b8416ba2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-2.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-additional-options
"-muser-provided-CPU=${srcdir}/gcc.target/aarch64/aarch64-json-tunings/enum-2.json
-fdump-tuning-model=temp.json" } */
+
+/* { dg-warning "autoprefetch model not recognized, defaulting to
'AUTOPREFETCHER_OFF'" "" { target *-*-* } 0 } */
+/* { dg-warning "ldp stp policy not recognized, defaulting to
'AARCH64_LDP_STP_POLICY_DEFAULT'" "" { target *-*-* } 0 } */
+
+int main () {}
\ No newline at end of file
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-2.json
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-2.json
new file mode 100644
index 00000000000..61204071fd3
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/enum-2.json
@@ -0,0 +1,7 @@
+{
+ "tune_params": {
+ "autoprefetcher_model": "null",
+ "ldp_policy_model": "null",
+ "stp_policy_model": "AARCH64_LDP_STP_POLICY_DEFAULT"
+ }
+}
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-1.c
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-1.c
new file mode 100644
index 00000000000..6749a785a39
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-1.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-additional-options
"-muser-provided-CPU=${srcdir}/gcc.target/aarch64/aarch64-json-tunings/integer-1.json
-fdump-tuning-model=temp.json" } */
+
+/* { dg-final { scan-file "temp.json" "\"sve_width\": 256" } } */
+/* { dg-final { scan-file "temp.json" "\"issue_rate\": 4" } } */
+
+int main () {}
\ No newline at end of file
diff --git
a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-1.json
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-1.json
new file mode 100644
index 00000000000..8db0efad28e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-1.json
@@ -0,0 +1,6 @@
+{
+ "tune_params": {
+ "sve_width": 256,
+ "issue_rate": 4
+ }
+}
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-2.c
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-2.c
new file mode 100644
index 00000000000..088e6aadcf3
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-2.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-additional-options
"-muser-provided-CPU=${srcdir}/gcc.target/aarch64/aarch64-json-tunings/integer-2.json
-fdump-tuning-model=temp.json" } */
+
+/* { dg-error "key .* expected to be an unsigned integer" "" { target *-*-* }
0 } */
+/* { dg-error "validation failed for the provided JSON data" "" { target
*-*-* } 0 } */
+
+int main () {}
\ No newline at end of file
diff --git
a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-2.json
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-2.json
new file mode 100644
index 00000000000..741cf5d2201
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-2.json
@@ -0,0 +1,6 @@
+{
+ "tune_params": {
+ "sve_width": -256,
+ "int_reassoc_width": 12097307449014
+ }
+}
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-3.c
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-3.c
new file mode 100644
index 00000000000..27b2f67f3ac
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-3.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-additional-options
"-muser-provided-CPU=${srcdir}/gcc.target/aarch64/aarch64-json-tunings/integer-3.json
-fdump-tuning-model=temp.json" } */
+
+/* { dg-error "key .* expected to be an integer" "" { target *-*-* } 0 } */
+/* { dg-error "validation failed for the provided JSON data" "" { target
*-*-* } 0 } */
+
+int main () {}
\ No newline at end of file
diff --git
a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-3.json
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-3.json
new file mode 100644
index 00000000000..94fd1232840
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-3.json
@@ -0,0 +1,5 @@
+{
+ "tune_params": {
+ "issue_rate": "10"
+ }
+}
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-4.c
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-4.c
new file mode 100644
index 00000000000..833de7c0233
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-4.c
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-additional-options
"-muser-provided-CPU=${srcdir}/gcc.target/aarch64/aarch64-json-tunings/integer-4.json
-fdump-tuning-model=temp.json" } */
+
+/* { dg-error "value exceeds 'INT_MAX'" "" { target *-*-* } 0 } */
+
+int main () {}
\ No newline at end of file
diff --git
a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-4.json
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-4.json
new file mode 100644
index 00000000000..94f614f0c0a
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/integer-4.json
@@ -0,0 +1,5 @@
+{
+ "tune_params": {
+ "issue_rate": 519027498174201
+ }
+}
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-1.c
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-1.c
new file mode 100644
index 00000000000..c26f3e4ca2f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-1.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-additional-options
"-muser-provided-CPU=${srcdir}/gcc.target/aarch64/aarch64-json-tunings/string-1.json
-fdump-tuning-model=temp.json" } */
+
+/* { dg-final { scan-file "temp.json" "\"function_align\": \"16\"" } } */
+/* { dg-final { scan-file "temp.json" "\"jump_align\": \"2\"" } } */
+/* { dg-final { scan-file "temp.json" "\"loop_align\": \"8\"" } } */
+
+int main () {}
\ No newline at end of file
diff --git
a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-1.json
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-1.json
new file mode 100644
index 00000000000..fe78f324a5c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-1.json
@@ -0,0 +1,7 @@
+{
+ "tune_params": {
+ "function_align": "16",
+ "jump_align": "2",
+ "loop_align": "8"
+ }
+}
diff --git a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-2.c
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-2.c
new file mode 100644
index 00000000000..fe9037bc9b4
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-2.c
@@ -0,0 +1,7 @@
+/* { dg-do compile } */
+/* { dg-additional-options
"-muser-provided-CPU=${srcdir}/gcc.target/aarch64/aarch64-json-tunings/string-2.json
-fdump-tuning-model=temp.json" } */
+
+/* { dg-error "key .* expected to be a string" "" { target *-*-* } 0 } */
+/* { dg-error "validation failed for the provided JSON data" "" { target
*-*-* } 0 } */
+
+int main () {}
\ No newline at end of file
diff --git
a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-2.json
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-2.json
new file mode 100644
index 00000000000..5b1df22784b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/string-2.json
@@ -0,0 +1,5 @@
+{
+ "tune_params": {
+ "function_align": 16
+ }
+}
diff --git
a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/unidentified-key.c
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/unidentified-key.c
new file mode 100644
index 00000000000..fbfe9f1fc9b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/unidentified-key.c
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-additional-options
"-muser-provided-CPU=${srcdir}/gcc.target/aarch64/aarch64-json-tunings/unidentified-key.json
-fdump-tuning-model=temp.json" } */
+
+/* { dg-warning "key .* is not a tuning parameter, skipping" "" { target
*-*-* } 0 } */
+
+int main () {}
\ No newline at end of file
diff --git
a/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/unidentified-key.json
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/unidentified-key.json
new file mode 100644
index 00000000000..89e69b2c690
--- /dev/null
+++
b/gcc/testsuite/gcc.target/aarch64/aarch64-json-tunings/unidentified-key.json
@@ -0,0 +1,5 @@
+{
+ "tune_params": {
+ "unidentified_key": "10"
+ }
+}
--
2.44.0
