Update test to specify correct inputs to clang-sycl-linker and update some comments

Signed-off-by: Arvind Sudarsanam <[email protected]>

Author: asudarsa

clang/test/Driver/clang-sycl-linker-test.cpp

@@ -30,19 +30,19 @@
 // FILETYPEERROR: Unsupported file type
 //
 // Test to see if device library related errors are emitted.
-// RUN: not clang-sycl-linker --dry-run -triple spirv64 %t.bc --library-path=%T --device-libs= -o a.spv 2>&1 \
+// RUN: not clang-sycl-linker --dry-run -triple spirv64 %t_1.bc %t_2.bc --library-path=%T --device-libs= -o a.spv 2>&1 \
 // RUN:   | FileCheck %s --check-prefix=DEVLIBSERR1
 // DEVLIBSERR1: Number of device library files cannot be zero
-// RUN: not clang-sycl-linker --dry-run -triple spirv64 %t.bc --library-path=%T --device-libs=lib1.bc,lib2.bc,lib3.bc -o a.spv 2>&1 \
+// RUN: not clang-sycl-linker --dry-run -triple spirv64 %t_1.bc %t_2.bc --library-path=%T --device-libs=lib1.bc,lib2.bc,lib3.bc -o a.spv 2>&1 \
 // RUN:   | FileCheck %s --check-prefix=DEVLIBSERR2
 // DEVLIBSERR2: '{{.*}}lib3.bc' SYCL device library file is not found
 //
 // Test if correct set of llvm-spirv options are emitted for windows environment.
-// RUN: clang-sycl-linker --dry-run -triple spirv64 --is-windows-msvc-env %t.bc -o a.spv 2>&1 \
+// RUN: clang-sycl-linker --dry-run -triple spirv64 --is-windows-msvc-env %t_1.bc %t_2.bc -o a.spv 2>&1 \
 // RUN:   | FileCheck %s --check-prefix=LLVMOPTSWIN
 // LLVMOPTSWIN: -spirv-debug-info-version=ocl-100 -spirv-allow-extra-diexpressions -spirv-allow-unknown-intrinsics=llvm.genx. -spirv-ext=
 //
 // Test if correct set of llvm-spirv options are emitted for linux environment.
-// RUN: clang-sycl-linker --dry-run -triple spirv64 %t.bc -o a.spv 2>&1 \
+// RUN: clang-sycl-linker --dry-run -triple spirv64  %t_1.bc %t_2.bc -o a.spv 2>&1 \
 // RUN:   | FileCheck %s --check-prefix=LLVMOPTSLIN
 // LLVMOPTSLIN: -spirv-debug-info-version=nonsemantic-shader-200 -spirv-allow-unknown-intrinsics=llvm.genx. -spirv-ext=

clang/tools/clang-sycl-linker/ClangSYCLLinker.cpp

@@ -7,7 +7,7 @@
 //===---------------------------------------------------------------------===//
 //
 // This tool executes a sequence of steps required to link device code in SYCL
-// fat objects. SYCL device code linking requires a complex sequence of steps
+// device images. SYCL device code linking requires a complex sequence of steps
 // that include linking of llvm bitcode files, linking device library files
 // with the fully linked source bitcode file(s), running several SYCL specific
 // post-link steps on the fully linked bitcode file(s), and finally generating
@@ -189,7 +189,7 @@ Expected<SmallVector<std::string>> getInput(const ArgList &Args) {
     if (auto EC = identify_magic(*Filename, Magic))
       return createStringError("Failed to open file " + *Filename);
     // TODO: Current use case involves LLVM IR bitcode files as input.
-    // This will be extended to support fat objects and SPIR-V IR files.
+    // This will be extended to support objects and SPIR-V IR files.
     if (Magic != file_magic::bitcode)
       return createStringError("Unsupported file type");
     BitcodeFiles.push_back(*Filename);