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@@ -0,0 +1,96 @@
+/// Windows SYCL runtime library linking tests
+//
+// NOTE: SYCL runtime library dependency is added at compiler stage via
+// --dependent-lib (embedded in object file), similar to CRT libraries.
+// Tests check for --dependent-lib in compiler (-cc1) output and
+// -libpath: in linker output.
+
+/// Test 1: /MD (explicit) and release library dependency
+// RUN: %clang_cl -### -fsycl /MD --target=x86_64-pc-windows-msvc -- %s 2>&1 \
+// RUN: | FileCheck -check-prefix=CHECK-MD %s
+// CHECK-MD: "-cc1"
+// CHECK-MD: "--dependent-lib=LLVMSYCL"
+// CHECK-MD: clang-linker-wrapper"
+// CHECK-MD-SAME: "-libpath:{{.*}}{{[/\\]+}}lib"
+
+/// Test 2: /MT is rejected with clear error
+// RUN: not %clang_cl -fsycl /MT --target=x86_64-pc-windows-msvc -- %s 2>&1 \
+// RUN: | FileCheck -check-prefix=CHECK-MT-ERROR %s
+// CHECK-MT-ERROR: error: SYCL requires dynamic C++ runtime
+
+/// Test 3: /MTd is also rejected
+// RUN: not %clang_cl -fsycl /MTd --target=x86_64-pc-windows-msvc -- %s 2>&1 \
+// RUN: | FileCheck -check-prefix=CHECK-MTD-ERROR %s
+// CHECK-MTD-ERROR: error: SYCL requires dynamic C++ runtime
+
+/// Test 4: /MD uses release library
+// RUN: %clang_cl -### -fsycl /MD --target=x86_64-pc-windows-msvc -- %s 2>&1 \
+// RUN: | FileCheck -check-prefix=CHECK-RELEASE %s
+// CHECK-RELEASE: "-cc1"
+// CHECK-RELEASE: "--dependent-lib=LLVMSYCL"
+// CHECK-RELEASE-NOT: LLVMSYCLd
+
+/// Test 5: /MDd uses debug library
+// RUN: %clang_cl -### -fsycl /MDd --target=x86_64-pc-windows-msvc -- %s 2>&1 \
+// RUN: | FileCheck -check-prefix=CHECK-DEBUG %s
+// CHECK-DEBUG: "-cc1"
+// CHECK-DEBUG: "--dependent-lib=LLVMSYCLd"
+// CHECK-DEBUG-NOT: "--dependent-lib=LLVMSYCL"
+
+/// Test 6: -fms-runtime-lib=static is rejected
+// RUN: not %clang_cl -fsycl -fms-runtime-lib=static \
+// RUN: --target=x86_64-pc-windows-msvc -- %s 2>&1 \
+// RUN: | FileCheck -check-prefix=CHECK-STATIC-ERROR %s
+// CHECK-STATIC-ERROR: error: SYCL requires dynamic C++ runtime
+
+/// Test 7: -fms-runtime-lib=dll_dbg uses debug library
+// RUN: %clang_cl -### -fsycl -fms-runtime-lib=dll_dbg \
+// RUN: --target=x86_64-pc-windows-msvc -- %s 2>&1 \
+// RUN: | FileCheck -check-prefix=CHECK-FLAG-DEBUG %s
+// CHECK-FLAG-DEBUG: "-cc1"
+// CHECK-FLAG-DEBUG: "--dependent-lib=LLVMSYCLd"
+
+/// Test 8: LNK4078 warning is suppressed
+// RUN: %clang_cl -### -fsycl --target=x86_64-pc-windows-msvc -- %s 2>&1 \
+// RUN: | FileCheck -check-prefix=CHECK-IGNORE %s
+// CHECK-IGNORE: clang-linker-wrapper"
+// CHECK-IGNORE: "/IGNORE:4078"
+
+/// Test 9: -nolibsycl skips library dependency and CRT check
+// RUN: %clang_cl -### -fsycl -nolibsycl /MT \
+// RUN: --target=x86_64-pc-windows-msvc -- %s 2>&1 \
+// RUN: | FileCheck -check-prefix=CHECK-NOLIBSYCL %s
+// CHECK-NOLIBSYCL-NOT: error:
+// CHECK-NOLIBSYCL-NOT: "--dependent-lib=LLVMSYCL"
+
+/// Test 10: Explicit /MD results in correct library
+// RUN: %clang_cl -### -fsycl /MD --target=x86_64-pc-windows-msvc -- %s 2>&1 \
+// RUN: | FileCheck -check-prefix=CHECK-EXPLICIT-MD %s
+// CHECK-EXPLICIT-MD: "-cc1"
+// CHECK-EXPLICIT-MD: "--dependent-lib=LLVMSYCL"
+
+/// Test 11: Library search path is added at linker stage
+// RUN: %clang_cl -### -fsycl /MD --target=x86_64-pc-windows-msvc -- %s 2>&1 \
+// RUN: | FileCheck -check-prefix=CHECK-LIBPATH %s
+// CHECK-LIBPATH: clang-linker-wrapper"
+// CHECK-LIBPATH: "-libpath:{{.*}}{{[/\\]+}}lib"
+
+/// Test 12: clang (non-clang-cl) with MSVC target uses -defaultlib:
+// RUN: %clang -### -fsycl -fms-runtime-lib=dll
--target=x86_64-pc-windows-msvc -- %s 2>&1 \
+// RUN: | FileCheck -check-prefix=CHECK-CLANG-DEFAULTLIB %s
+// CHECK-CLANG-DEFAULTLIB: clang-linker-wrapper"
+// CHECK-CLANG-DEFAULTLIB: "-libpath:{{.*}}{{[/\\]+}}lib"
+// CHECK-CLANG-DEFAULTLIB: "-defaultlib:LLVMSYCL"
+
+/// Test 13: clang with -fms-runtime-lib=dll_dbg uses debug library via
-defaultlib:
+// RUN: %clang -### -fsycl -fms-runtime-lib=dll_dbg
--target=x86_64-pc-windows-msvc -- %s 2>&1 \
+// RUN: | FileCheck -check-prefix=CHECK-CLANG-DEBUG %s
+// CHECK-CLANG-DEBUG: clang-linker-wrapper"
+// CHECK-CLANG-DEBUG: "-defaultlib:LLVMSYCLd"
+
+/// Test 14: Default CRT behavior - release library when no CRT flag specified
----------------
bader wrote:
Can we test separate compilation (i.e. clang -c -o out.obj + clang out.obj -o
app.exe)?
https://github.com/llvm/llvm-project/pull/194744
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