[SYCL][NFC] Set appropriate targets for SYCL mode tests when needed (#2750)

Some tests require updating to fix target architecture differences.
The tests are expecting 64-bit targets, but under some conditions the
default architecture would not match (e.g. running a 32-bit target
compiler)

Author: mdtoguchi

clang/test/Driver/sycl-offload-with-split.c

@@ -14,15 +14,15 @@
 /// The same phase graph will be used with -fsycl-use-bitcode
 // RUN:   %clang -ccc-print-phases -target x86_64-unknown-linux-gnu -fsycl -fno-sycl-device-lib=all -fsycl-device-code-split -fsycl-targets=spir64-unknown-unknown-sycldevice %s 2>&1 \
 // RUN:   | FileCheck -check-prefixes=CHK-PHASES,CHK-PHASES-DEFAULT-MODE %s
-// RUN:   %clang_cl -ccc-print-phases -fsycl -fno-sycl-device-lib=all -fsycl-device-code-split=per_source -fsycl-targets=spir64-unknown-unknown-sycldevice %s 2>&1 \
+// RUN:   %clang_cl -ccc-print-phases --target=x86_64-pc-windows-msvc -fsycl -fno-sycl-device-lib=all -fsycl-device-code-split=per_source -fsycl-targets=spir64-unknown-unknown-sycldevice %s 2>&1 \
 // RUN:   | FileCheck -check-prefixes=CHK-PHASES,CHK-PHASES-CL-MODE %s
 // RUN:   %clang -ccc-print-phases -target x86_64-unknown-linux-gnu -fsycl -fno-sycl-device-lib=all -fsycl-device-code-split=per_source -fno-sycl-use-bitcode %s 2>&1 \
 // RUN:   | FileCheck -check-prefixes=CHK-PHASES,CHK-PHASES-DEFAULT-MODE %s
-// RUN:   %clang_cl -ccc-print-phases -fsycl -fno-sycl-device-lib=all -fsycl-device-code-split=per_source -fno-sycl-use-bitcode %s 2>&1 \
+// RUN:   %clang_cl -ccc-print-phases --target=x86_64-pc-windows-msvc -fsycl -fno-sycl-device-lib=all -fsycl-device-code-split=per_source -fno-sycl-use-bitcode %s 2>&1 \
 // RUN:   | FileCheck -check-prefixes=CHK-PHASES,CHK-PHASES-CL-MODE %s
 // RUN:   %clang -ccc-print-phases -target x86_64-unknown-linux-gnu -fsycl -fno-sycl-device-lib=all -fsycl-device-code-split=per_source -fsycl-use-bitcode %s 2>&1 \
 // RUN:   | FileCheck -check-prefixes=CHK-PHASES,CHK-PHASES-DEFAULT-MODE %s
-// RUN:   %clang_cl -ccc-print-phases -fsycl -fno-sycl-device-lib=all -fsycl-device-code-split=per_source -fsycl-use-bitcode %s 2>&1 \
+// RUN:   %clang_cl -ccc-print-phases --target=x86_64-pc-windows-msvc -fsycl -fno-sycl-device-lib=all -fsycl-device-code-split=per_source -fsycl-use-bitcode %s 2>&1 \
 // RUN:   | FileCheck -check-prefixes=CHK-PHASES,CHK-PHASES-CL-MODE %s
 // CHK-PHASES: 0: input, "[[INPUT:.+\.c]]", c++, (host-sycl)
 // CHK-PHASES: 1: preprocessor, {0}, c++-cpp-output, (host-sycl)

clang/test/Driver/sycl.c

@@ -72,7 +72,7 @@
 // HEADER_ORDER-NOT: clang{{.*}} "/usr/include"{{.*}} "-internal-isystem" "{{.*}}bin{{[/\\]+}}..{{[/\\]+}}include{{[/\\]+}}
 
 /// Verify -fsycl-device-only phases
-// RUN: %clang -### -ccc-print-phases -fsycl-device-only %s 2>&1 | FileCheck %s --check-prefix=DEFAULT-PHASES
+// RUN: %clang -### -ccc-print-phases -target x86_64-unknown-linux-gnu -fsycl-device-only %s 2>&1 | FileCheck %s --check-prefix=DEFAULT-PHASES
 // DEFAULT-PHASES: 0: input, "{{.*}}", c++, (device-sycl)
 // DEFAULT-PHASES: 1: preprocessor, {0}, c++-cpp-output, (device-sycl)
 // DEFAULT-PHASES: 2: compiler, {1}, ir, (device-sycl)