[clang] [clang][AArch64] Pass down stack clash protection options to LLVM/Backend (PR #68993)

[Momchil Velikov via cfe-commits]

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@@ -1,25 +1,33 @@
 // Check the correct function attributes are generated
-// RUN: %clang_cc1 -triple x86_64-linux -O0 -S -emit-llvm -o- %s -fstack-clash-protection | FileCheck %s
-// RUN: %clang_cc1 -triple s390x-linux-gnu -O0 -S -emit-llvm -o- %s -fstack-clash-protection | FileCheck %s
-// RUN: %clang_cc1 -triple powerpc64le-linux-gnu -O0 -S -emit-llvm -o- %s -fstack-clash-protection | FileCheck %s
-// RUN: %clang_cc1 -triple powerpc64-linux-gnu -O0 -S -emit-llvm -o- %s -fstack-clash-protection | FileCheck %s
+// RUN: %clang_cc1 -triple x86_64-linux -O0 -S -emit-llvm -o- %s -fstack-clash-protection -mstack-probe-size=8192 | FileCheck %s
+// RUN: %clang_cc1 -triple s390x-linux-gnu -O0 -S -emit-llvm -o- %s -fstack-clash-protection -mstack-probe-size=8192 | FileCheck %s
+// RUN: %clang_cc1 -triple powerpc64le-linux-gnu -O0 -S -emit-llvm -o- %s -fstack-clash-protection -mstack-probe-size=8192 | FileCheck %s
+// RUN: %clang_cc1 -triple powerpc64-linux-gnu -O0 -S -emit-llvm -o- %s -fstack-clash-protection -mstack-probe-size=8192 | FileCheck %s
+// RUN: %clang_cc1 -triple aarch64-linux-gnu -O0 -S -emit-llvm -o- %s -fstack-clash-protection -mstack-probe-size=8192 | FileCheck %s --check-prefixes CHECK-AARCH64
 
 // CHECK: define{{.*}} void @large_stack() #[[A:.*]] {
+// CHECK-AARCH64: define{{.*}} void @large_stack() #[[A:.*]] {
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momchil-velikov wrote:

However that `CHECK`  at line 29 is not applicable for AArch64.
The way attributes are passed down to LLVM differs between AArch64 and other backends which support SCP. IMHO other backends should adopt the AArch64 way - then this test will contain only `CHECK` lines (corresponding to the current `CHECK-AARCH64` ones).

https://github.com/llvm/llvm-project/pull/68993