[clang] Fix --print-libgcc-file-name on Darwin platforms (PR #98325)

[Louis Dionne via cfe-commits]

================
@@ -0,0 +1,97 @@
+// Test the output of -print-libgcc-file-name on Darwin.
+
+//
+// All platforms
+//
+
+// RUN: %clang -rtlib=compiler-rt -print-libgcc-file-name \
+// RUN:     --target=x86_64-apple-macos \
+// RUN:     -resource-dir=%S/Inputs/resource_dir 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-MACOS %s
+// CHECK-CLANGRT-MACOS: libclang_rt.osx.a
+
+// RUN: %clang -rtlib=compiler-rt -print-libgcc-file-name \
+// RUN:     --target=arm64-apple-ios \
+// RUN:     -resource-dir=%S/Inputs/resource_dir 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-IOS %s
+// CHECK-CLANGRT-IOS: libclang_rt.ios.a
+
+// RUN: %clang -rtlib=compiler-rt -print-libgcc-file-name \
+// RUN:     --target=arm64-apple-watchos \
+// RUN:     -resource-dir=%S/Inputs/resource_dir 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-WATCHOS %s
+// CHECK-CLANGRT-WATCHOS: libclang_rt.watchos.a
+
+// RUN: %clang -rtlib=compiler-rt -print-libgcc-file-name \
+// RUN:     --target=arm64-apple-tvos \
+// RUN:     -resource-dir=%S/Inputs/resource_dir 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-TVOS %s
+// CHECK-CLANGRT-TVOS: libclang_rt.tvos.a
+
+// RUN: %clang -rtlib=compiler-rt -print-libgcc-file-name \
+// RUN:     --target=arm64-apple-driverkit \
+// RUN:     -resource-dir=%S/Inputs/resource_dir 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-DRIVERKIT %s
+// CHECK-CLANGRT-DRIVERKIT: libclang_rt.driverkit.a
+
+//
+// Simulators
+//
+
+// RUN: %clang -rtlib=compiler-rt -print-libgcc-file-name \
+// RUN:     --target=arm64-apple-ios-simulator \
+// RUN:     -resource-dir=%S/Inputs/resource_dir 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-IOS-SIMULATOR %s
+// CHECK-CLANGRT-IOS-SIMULATOR: libclang_rt.iossim.a
+
+// RUN: %clang -rtlib=compiler-rt -print-libgcc-file-name \
+// RUN:     --target=arm64-apple-watchos-simulator \
+// RUN:     -resource-dir=%S/Inputs/resource_dir 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-WATCHOS-SIMULATOR %s
+// CHECK-CLANGRT-WATCHOS-SIMULATOR: libclang_rt.watchossim.a
+
+// RUN: %clang -rtlib=compiler-rt -print-libgcc-file-name \
+// RUN:     --target=arm64-apple-tvos-simulator \
+// RUN:     -resource-dir=%S/Inputs/resource_dir 2>&1 \
+// RUN:   | FileCheck --check-prefix=CHECK-CLANGRT-TVOS-SIMULATOR %s
+// CHECK-CLANGRT-TVOS-SIMULATOR: libclang_rt.tvossim.a
+
+//
+// Check the cc_kext variants
+//
+
+// TODO
+
+//
+// Check the sanitizer and profile variants
----------------
ldionne wrote:

```suggestion
// Check the sanitizer and profile variants
// While the driver also links in sanitizer-specific dylibs, the result of
// -print-libgcc-file-name is the path of the basic compiler-rt library.
```

https://github.com/llvm/llvm-project/pull/98325