[Driver][SYCL] warning emitted when compiling wrapped object (#16397)

After the switch to using clang to build the wrapped object the embedded
target in the IR is caused a warning to be emitted. Fix this by
adjusting the clang-offload-wrapper call to use the same host triple
that is used when performing a regular compilation. Matching these up
allows for no diagnostic to be emitted.

Warning emitted: warning: overriding the module target triple with
      x86_64-pc-windows-msvc19.29.30154 [-Woverride-module]

Author: mdtoguchi

clang/lib/Driver/ToolChains/Clang.cpp

@@ -10164,7 +10164,11 @@ void OffloadWrapper::ConstructJob(Compilation &C, const JobAction &JA,
     WrapperArgs.push_back(C.getArgs().MakeArgString(OutOpt));
 
     SmallString<128> HostTripleOpt("-host=");
-    HostTripleOpt += getToolChain().getAuxTriple()->str();
+    const ToolChain *HostTC = C.getSingleOffloadToolChain<Action::OFK_Host>();
+    // Use the Effective Triple to match the expected triple when using the
+    // clang compiler to compile the wrapped binary.
+    std::string HostTripleStr = HostTC->ComputeEffectiveClangTriple(TCArgs);
+    HostTripleOpt += HostTripleStr;
     WrapperArgs.push_back(C.getArgs().MakeArgString(HostTripleOpt));
 
     llvm::Triple TT = getToolChain().getTriple();
@@ -10293,9 +10297,9 @@ void OffloadWrapper::ConstructJob(Compilation &C, const JobAction &JA,
 
     if (WrapperCompileEnabled) {
       // TODO Use TC.SelectTool().
-      ArgStringList ClangArgs{
-          TCArgs.MakeArgString("--target=" + TC.getAuxTriple()->str()), "-c",
-          "-o", Output.getFilename(), WrapperFileName};
+      ArgStringList ClangArgs{TCArgs.MakeArgString("--target=" + HostTripleStr),
+                              "-c", "-o", Output.getFilename(),
+                              WrapperFileName};
       llvm::Reloc::Model RelocationModel;
       unsigned PICLevel;
       bool IsPIE;

clang/test/Driver/sycl-offload-aot.cpp

@@ -153,10 +153,10 @@
 // CHK-TOOLS-GEN: ocloc{{.*}} "-output" "[[OUTPUT4_T:.+\.out]]" {{.*}} "[[OUTPUT3_T]]"
 // CHK-TOOLS-CPU: opencl-aot{{.*}} "-o=[[OUTPUT4_T:.+\.out]]" {{.*}} "[[OUTPUT3_T]]"
 // CHK-TOOLS-AOT: file-table-tform{{.*}} "-o" "[[OUTPUT4:.+\.table]]" "{{.*}}.table"{{.*}} "[[OUTPUT4_T]]"
-// CHK-TOOLS-FPGA: clang-offload-wrapper{{.*}} "-o=[[OUTPUT5:.+\.bc]]" "-host=x86_64-unknown-linux-gnu" "-target=spir64_fpga{{.*}}" "-kind=sycl" "-batch" "[[OUTPUT4]]"
-// CHK-TOOLS-GEN: clang-offload-wrapper{{.*}} "-o=[[OUTPUT5:.+\.bc]]" "-host=x86_64-unknown-linux-gnu" "-target=spir64_gen{{.*}}" "-kind=sycl" "-batch" "[[OUTPUT4]]"
-// CHK-TOOLS-CPU: clang-offload-wrapper{{.*}} "-o=[[OUTPUT5:.+\.bc]]" "-host=x86_64-unknown-linux-gnu" "-target=spir64_x86_64{{.*}}" "-kind=sycl" "-batch" "[[OUTPUT4]]"
-// CHK-TOOLS-AOT: clang{{.*}} "-c" "-o" "[[OUTPUT6:.+\.o]]" "[[OUTPUT5]]"
+// CHK-TOOLS-FPGA: clang-offload-wrapper{{.*}} "-o=[[OUTPUT5:.+\.bc]]" "-host=[[HOST_TARGET:.+]]" "-target=spir64_fpga{{.*}}" "-kind=sycl" "-batch" "[[OUTPUT4]]"
+// CHK-TOOLS-GEN: clang-offload-wrapper{{.*}} "-o=[[OUTPUT5:.+\.bc]]" "-host=[[HOST_TARGET:.+]]" "-target=spir64_gen{{.*}}" "-kind=sycl" "-batch" "[[OUTPUT4]]"
+// CHK-TOOLS-CPU: clang-offload-wrapper{{.*}} "-o=[[OUTPUT5:.+\.bc]]" "-host=[[HOST_TARGET:.+]]" "-target=spir64_x86_64{{.*}}" "-kind=sycl" "-batch" "[[OUTPUT4]]"
+// CHK-TOOLS-AOT: clang{{.*}} "--target=[[HOST_TARGET]]" "-c" "-o" "[[OUTPUT6:.+\.o]]" "[[OUTPUT5]]"
 // CHK-TOOLS-AOT: ld{{.*}} "[[OUTPUT7]]" "[[OUTPUT6]]" {{.*}} "-lsycl"
 
 // Check to be sure that for windows, the 'exe' tools are called

clang/test/Driver/sycl-offload-nvptx.cpp

@@ -31,7 +31,8 @@
 // CHK-ACTIONS-WIN: llvm-foreach" {{.*}} "--" "{{.*}}fatbinary"
 // CHK-ACTIONS-WIN: file-table-tform" "-replace=Code,Code"
 // CHK-ACTIONS-WIN-NOT: "-mllvm -sycl-opt"
-// CHK-ACTIONS-WIN: clang-offload-wrapper"{{.*}} "-host=x86_64-pc-windows-msvc" "-target=nvptx64" "-kind=sycl"{{.*}}
+// CHK-ACTIONS-WIN: clang-offload-wrapper"{{.*}} "-host=[[HOST_TARGET:x86_64-pc-windows-msvc.*]]" "-target=nvptx64" "-kind=sycl"{{.*}}
+// CHK-ACTIONS-WIN: clang{{.*}} "--target=[[HOST_TARGET]]" "-c"
 
 /// Check phases w/out specifying a compute capability.
 // RUN: %clangxx -ccc-print-phases --sysroot=%S/Inputs/SYCL -std=c++11 \

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

@@ -208,10 +208,10 @@
 // CHK-TOOLS-GEN: llvm-foreach{{.*}} "--out-file-list=[[OUTPUT6:.+\.txt]]{{.*}} "--" "{{.*}}ocloc{{.*}} "-output" "[[OUTPUT6]]" "-file" "[[OUTPUT5]]"
 // CHK-TOOLS-CPU: llvm-foreach{{.*}} "--out-file-list=[[OUTPUT6:.+\.txt]]{{.*}} "--" "{{.*}}opencl-aot{{.*}} "-o=[[OUTPUT6]]" "--device=cpu" "[[OUTPUT5]]"
 // CHK-TOOLS-AOT: file-table-tform{{.*}} "-o" "[[OUTPUT7:.+\.table]]" "[[OUTPUT3]]" "[[OUTPUT6]]"
-// CHK-TOOLS-FPGA: clang-offload-wrapper{{.*}} "-o=[[OUTPUT8:.+\.bc]]" "-host=x86_64-unknown-linux-gnu" "-target=spir64_fpga" "-kind=sycl" "-batch" "[[OUTPUT7]]"
-// CHK-TOOLS-GEN: clang-offload-wrapper{{.*}} "-o=[[OUTPUT8:.+\.bc]]" "-host=x86_64-unknown-linux-gnu" "-target=spir64_gen" "-kind=sycl" "-batch" "[[OUTPUT7]]"
-// CHK-TOOLS-CPU: clang-offload-wrapper{{.*}} "-o=[[OUTPUT8:.+\.bc]]" "-host=x86_64-unknown-linux-gnu" "-target=spir64_x86_64" "-kind=sycl" "-batch" "[[OUTPUT7]]"
-// CHK-TOOLS-AOT: clang{{.*}} "-c" "-o" "[[OUTPUT9:.+\.o]]" "[[OUTPUT8]]"
+// CHK-TOOLS-FPGA: clang-offload-wrapper{{.*}} "-o=[[OUTPUT8:.+\.bc]]" "-host=[[HOST_TARGET:.+]]" "-target=spir64_fpga" "-kind=sycl" "-batch" "[[OUTPUT7]]"
+// CHK-TOOLS-GEN: clang-offload-wrapper{{.*}} "-o=[[OUTPUT8:.+\.bc]]" "-host=[[HOST_TARGET:.+]]" "-target=spir64_gen" "-kind=sycl" "-batch" "[[OUTPUT7]]"
+// CHK-TOOLS-CPU: clang-offload-wrapper{{.*}} "-o=[[OUTPUT8:.+\.bc]]" "-host=[[HOST_TARGET:.+]]" "-target=spir64_x86_64" "-kind=sycl" "-batch" "[[OUTPUT7]]"
+// CHK-TOOLS-AOT: clang{{.*}} "--target=[[HOST_TARGET]]" "-c" "-o" "[[OUTPUT9:.+\.o]]" "[[OUTPUT8]]"
 // CHK-TOOLS-AOT: ld{{.*}} "[[OUTPUT10]]" "[[OUTPUT9]]" {{.*}} "-lsycl"
 
 /// ###########################################################################