[Driver][SYCL] Do not emit target not found warning for early images (#12035)

For any objects/libraries created with -fno-sycl-rdc -c, we should not
emit the 'linked binaries do not contain expected target' warning
diagnostic. Expected use model is to not provide any specific targets to
allow consuming of these objects/libraries.

Author: mdtoguchi

clang/lib/Driver/Driver.cpp

@@ -6145,6 +6145,27 @@ class OffloadingActionBuilder final {
         if (std::find(UniqueSections.begin(), UniqueSections.end(),
                       SectionTriple) != UniqueSections.end())
           continue;
+        // If any section found is an 'image' based object that was created
+        // with the intention of not requiring the matching SYCL target, do
+        // not emit the diagnostic.
+        if (SyclTarget.TC->getTriple().isSPIR()) {
+          bool SectionFound = false;
+          for (auto Section : UniqueSections) {
+            if (SectionFound)
+              break;
+            SmallVector<std::string, 3> ArchList = {"spir64_gen", "spir64_fpga",
+                                                    "spir64_x86_64"};
+            for (auto ArchStr : ArchList) {
+              std::string Arch(ArchStr + "_image");
+              if (Section.find(Arch) != std::string::npos) {
+                SectionFound = true;
+                break;
+              }
+            }
+          }
+          if (SectionFound)
+            continue;
+        }
         // Didn't find any matches, return the full list for the diagnostic.
         SmallString<128> ArchListStr;
         int Cnt = 0;

clang/test/Driver/sycl-early-device-link.cpp

@@ -121,11 +121,13 @@
 // RUN: %clangxx -fsycl --target=x86_64-unknown-linux-gnu -### \
 // RUN:          %S/Inputs/SYCL/objgenimage.o %s 2>&1 \
 // RUN:  | FileCheck %s -check-prefix=CONSUME_OBJ
+// CONSUME_OBJ-NOT: linked binaries do not contain expected
 // CONSUME_OBJ: clang-offload-bundler{{.*}} "-type=o" "-targets=sycl-spir64_gen_image-unknown-unknown" "-input={{.*}}objgenimage.o" "-output=[[DEVICE_IMAGE_OBJ:.+\.o]]
 // CONSUME_OBJ: ld{{.*}} "[[DEVICE_IMAGE_OBJ]]"
 
 // RUN: %clangxx -fsycl --target=x86_64-unknown-linux-gnu -### \
 // RUN:          %S/Inputs/SYCL/libgenimage.a  %s 2>&1 \
 // RUN:  | FileCheck %s -check-prefix=CONSUME_LIB
+// CONSUME_LIB-NOT: linked binaries do not contain expected
 // CONSUME_LIB: clang-offload-bundler{{.*}} "-type=aoo" "-targets=sycl-spir64_gen_image-unknown-unknown" "-input={{.*}}libgenimage.a" "-output=[[DEVICE_IMAGE_LIB:.+\.txt]]
 // CONSUME_LIB: ld{{.*}} "@[[DEVICE_IMAGE_LIB]]"