[clang] [Clang][RISCV] Add preprocessor macros for Zicfilp CFI scheme (PR #109600)

[Ming-Yi Lai via cfe-commits]

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@@ -0,0 +1,90 @@
+// Default cf-branch-label-scheme is func-sig
+// RUN: %clang --target=riscv32 -menable-experimental-extensions \
+// RUN:   -march=rv32i_zicfilp1p0 -fcf-protection=branch -E -dM %s -o - \
+// RUN:   | FileCheck --check-prefix=CHECK-ZICFILP-FUNC-SIG %s
+// RUN: %clang --target=riscv64 -menable-experimental-extensions \
+// RUN:   -march=rv64i_zicfilp1p0 -fcf-protection=branch -E -dM %s -o - \
+// RUN:   | FileCheck --check-prefix=CHECK-ZICFILP-FUNC-SIG %s
+
+// RUN: %clang --target=riscv32 -menable-experimental-extensions \
+// RUN:   -march=rv32i_zicfilp1p0 -fcf-protection=branch \
+// RUN:   -mcf-branch-label-scheme=unlabeled -E -dM %s -o - \
+// RUN:   | FileCheck --check-prefix=CHECK-ZICFILP-UNLABELED %s
+
+// RUN: %clang --target=riscv32 -menable-experimental-extensions \
+// RUN:   -march=rv32i_zicfilp1p0 -fcf-protection=branch \
+// RUN:   -mcf-branch-label-scheme=func-sig -E -dM %s -o - \
+// RUN:   | FileCheck --check-prefix=CHECK-ZICFILP-FUNC-SIG %s
+
+// RUN: %clang --target=riscv32 -menable-experimental-extensions \
+// RUN:   -march=rv32i_zicfilp1p0 -mcf-branch-label-scheme=unlabeled -c %s \
+// RUN:   -o /dev/null 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-UNLABELED-SCHEME-UNUSED %s
+
+// RUN: %clang --target=riscv32 -menable-experimental-extensions \
+// RUN:   -march=rv32i_zicfilp1p0 -mcf-branch-label-scheme=func-sig -c %s \
+// RUN:   -o /dev/null 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-FUNC-SIG-SCHEME-UNUSED %s
+
+// RUN: not %clang --target=riscv32 -fcf-protection=branch \
+// RUN:   -mcf-branch-label-scheme=unlabeled -c %s -o /dev/null 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-BRANCH-PROT-INVALID %s
+
+// RUN: not %clang --target=riscv32 -fcf-protection=branch \
+// RUN:   -mcf-branch-label-scheme=func-sig -c %s -o /dev/null 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-BRANCH-PROT-INVALID %s
+
+// RUN: %clang --target=riscv32 -mcf-branch-label-scheme=unlabeled -c %s \
+// RUN:   -o /dev/null 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-UNLABELED-SCHEME-UNUSED %s
+
+// RUN: %clang --target=riscv32 -mcf-branch-label-scheme=func-sig -c %s \
+// RUN:   -o /dev/null 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-FUNC-SIG-SCHEME-UNUSED %s
+
+// RUN: %clang --target=riscv64 -menable-experimental-extensions \
+// RUN:   -march=rv64i_zicfilp1p0 -fcf-protection=branch \
+// RUN:   -mcf-branch-label-scheme=unlabeled -E -dM %s -o - \
+// RUN:   | FileCheck --check-prefix=CHECK-ZICFILP-UNLABELED %s
+
+// RUN: %clang --target=riscv64 -menable-experimental-extensions \
+// RUN:   -march=rv64i_zicfilp1p0 -fcf-protection=branch \
+// RUN:   -mcf-branch-label-scheme=func-sig -E -dM %s -o - \
+// RUN:   | FileCheck --check-prefix=CHECK-ZICFILP-FUNC-SIG %s
+
+// RUN: %clang --target=riscv64 -menable-experimental-extensions \
+// RUN:   -march=rv64i_zicfilp1p0 -mcf-branch-label-scheme=unlabeled -c %s \
+// RUN:   -o /dev/null 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-UNLABELED-SCHEME-UNUSED %s
+
+// RUN: %clang --target=riscv64 -menable-experimental-extensions \
+// RUN:   -march=rv64i_zicfilp1p0 -mcf-branch-label-scheme=func-sig -c %s \
+// RUN:   -o /dev/null 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-FUNC-SIG-SCHEME-UNUSED %s
+
+// RUN: not %clang --target=riscv64 -fcf-protection=branch \
+// RUN:   -mcf-branch-label-scheme=unlabeled -c %s -o /dev/null 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-BRANCH-PROT-INVALID %s
+
+// RUN: not %clang --target=riscv64 -fcf-protection=branch \
+// RUN:   -mcf-branch-label-scheme=func-sig -c %s -o /dev/null 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-BRANCH-PROT-INVALID %s
+
+// RUN: %clang --target=riscv64 -mcf-branch-label-scheme=unlabeled -c %s \
+// RUN:   -o /dev/null 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-UNLABELED-SCHEME-UNUSED %s
+
+// RUN: %clang --target=riscv64 -mcf-branch-label-scheme=func-sig -c %s \
+// RUN:   -o /dev/null 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-FUNC-SIG-SCHEME-UNUSED %s
+
+// CHECK-ZICFILP-UNLABELED-DAG: __riscv_landing_pad 1{{$}}
+// CHECK-ZICFILP-UNLABELED-DAG: __riscv_landing_pad_unlabeled 1{{$}}
+// CHECK-ZICFILP-FUNC-SIG-DAG: __riscv_landing_pad 1{{$}}
+// CHECK-ZICFILP-FUNC-SIG-DAG: __riscv_landing_pad_func_sig 1{{$}}
+// CHECK-BRANCH-PROT-INVALID: error: option 'cf-protection=branch' cannot be
+// CHECK-BRANCH-PROT-INVALID-SAME: specified on this target
+// CHECK-UNLABELED-SCHEME-UNUSED: warning: argument unused during compilation:
+// CHECK-UNLABELED-SCHEME-UNUSED-SAME: '-mcf-branch-label-scheme=unlabeled'
+// CHECK-FUNC-SIG-SCHEME-UNUSED: warning: argument unused during compilation:
+// CHECK-FUNC-SIG-SCHEME-UNUSED-SAME: '-mcf-branch-label-scheme=func-sig'
----------------
mylai-mtk wrote:

To provide diagnostics at the preprocessor's get definition step, I supplied `DiagnosticsEngine` to `TargetInfo::getTargetDefines()` so diagnostics can be made in it. This is a change to a widely used interface, and I'm not sure if it's acceptable, so I just pushed the commit to this PR for your preview. If the change's likeable, I'll move the commit to its own independent and formal PR for review. Thanks.

https://github.com/llvm/llvm-project/pull/109600