[clang] [llvm] [Clang][AArch64] Command-line options for A-profile's Sign Return Address Hardening (PR #176171)

[Victor Campos via llvm-commits]

================
@@ -35,6 +38,58 @@
 
 // WARN-NOT: warning: ignoring '-mbranch-protection=' option because the 'aarch64' architecture does not support it [-Wbranch-protection]
 
+// RUN: %clang -target aarch64 -c %s -### 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=ABSENT-RA-HARDEN
+
+// RUN: %clang -target aarch64 -c %s -### -mharden-pac-ret=none 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=NO-RA-HARDEN
+
+// RUN: %clang -target aarch64 -c %s -### -mharden-pac-ret=load-return-address 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=NO-RA-HARDEN
+
+// RUN: %clang -target aarch64 -c %s -### -mbranch-protection=none -mharden-pac-ret=none 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=NO-RA-HARDEN
+// RUN: %clang -target arm64-apple-darwin -c %s -### -fno-ptrauth-returns -mharden-pac-ret=none 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=NO-RA-HARDEN
+
+// RUN: %clang -target aarch64 -c %s -### -mbranch-protection=none -mharden-pac-ret=load-return-address 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=NO-RA-HARDEN
+// RUN: %clang -target arm64-apple-darwin -c %s -### -fno-ptrauth-returns -mharden-pac-ret=load-return-address 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=NO-RA-HARDEN
+
+// RUN: %clang -target aarch64 -c %s -### -mbranch-protection=pac-ret -mharden-pac-ret=none 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=RA-HARDEN-NONE
+// RUN: %clang -target arm64-apple-darwin -c %s -### -fptrauth-returns -mharden-pac-ret=none 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=RA-HARDEN-NONE
+
+// RUN: %clang -target aarch64 -c %s -### -mbranch-protection=pac-ret -mharden-pac-ret=load-return-address 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=RA-HARDEN-LRA
+// RUN: %clang -target arm64-apple-darwin -c %s -### -fptrauth-returns -mharden-pac-ret=load-return-address 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=RA-HARDEN-LRA
+
+// RUN: %clang -target aarch64 -c %s -### -mbranch-protection=standard -mharden-pac-ret=none 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=RA-HARDEN-NONE
+
+// RUN: %clang -target aarch64 -c %s -### -mbranch-protection=standard -mharden-pac-ret=load-return-address 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=RA-HARDEN-LRA
+
+// RUN: not %clang -target aarch64 -c %s -### -mbranch-protection=standard -mharden-pac-ret=foo 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=BAD-HARDEN-PROTECTION
+// RUN: not %clang -target arm64-apple-darwin -c %s -### -fptrauth-returns -mharden-pac-ret=foo 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=BAD-HARDEN-PROTECTION
+
+// RUN: not %clang -target aarch64 -c %s -### -mbranch-protection=standard -mharden-pac-ret=load-return-address -mexecute-only 2>&1 | \
+// RUN: FileCheck %s --check-prefixes=RA-HARDEN-INCOMPATIBLE-EXEC-ONLY
+// RUN: %clang -target aarch64 -c %s -### -mbranch-protection=standard -mharden-pac-ret=none -mexecute-only
----------------
vhscampos wrote:

Done. Thank you

https://github.com/llvm/llvm-project/pull/176171