The expected asm output for aes-fuse-[12].c does not correspond to
that which is generated when -mfix-cortex-a57-aes-1742098 is enabled.
It was introduced after the test, and enabled by default for the
selected processor. Disabling the option restores the circumstance
that was tested for.
Regstrapped on x86_64-linux-gnu.
Tested on arm-vxworks7 (gcc-12) and arm-eabi (trunk). Ok to install?
for gcc/testsuite/ChangeLog
* gcc.target/arm/aes-fuse-1.c: Add
-mno-fix-cortex-a57-aes-1742098.
* gcc.target/arm/aes-fuse-2.c: Likewise.
---
gcc/testsuite/gcc.target/arm/aes-fuse-1.c | 4 ++++
gcc/testsuite/gcc.target/arm/aes-fuse-2.c | 4 ++++
2 files changed, 8 insertions(+)
diff --git a/gcc/testsuite/gcc.target/arm/aes-fuse-1.c
b/gcc/testsuite/gcc.target/arm/aes-fuse-1.c
index 27b08aeef7ba7..6ffb4991cca69 100644
--- a/gcc/testsuite/gcc.target/arm/aes-fuse-1.c
+++ b/gcc/testsuite/gcc.target/arm/aes-fuse-1.c
@@ -2,6 +2,10 @@
/* { dg-require-effective-target arm_crypto_ok } */
/* { dg-add-options arm_crypto } */
/* { dg-additional-options "-mcpu=cortex-a72 -O3 -dp" } */
+/* The mitigation applies to a72 by default, and protects the CRYPTO_AES
+ inputs, such as the explicit xor ops, from being combined like test used to
+ expect. */
+/* { dg-additional-options "-mno-fix-cortex-a57-aes-1742098" } */
#include <arm_neon.h>
diff --git a/gcc/testsuite/gcc.target/arm/aes-fuse-2.c
b/gcc/testsuite/gcc.target/arm/aes-fuse-2.c
index 1266a28753169..b72479c0e5726 100644
--- a/gcc/testsuite/gcc.target/arm/aes-fuse-2.c
+++ b/gcc/testsuite/gcc.target/arm/aes-fuse-2.c
@@ -2,6 +2,10 @@
/* { dg-require-effective-target arm_crypto_ok } */
/* { dg-add-options arm_crypto } */
/* { dg-additional-options "-mcpu=cortex-a72 -O3 -dp" } */
+/* The mitigation applies to a72 by default, and protects the CRYPTO_AES
+ inputs, such as the explicit xor ops, from being combined like test used to
+ expect. */
+/* { dg-additional-options "-mno-fix-cortex-a57-aes-1742098" } */
#include <arm_neon.h>
--
Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/
Free Software Activist GNU Toolchain Engineer
Disinformation flourishes because many people care deeply about injustice
but very few check the facts. Ask me about <https://stallmansupport.org>
