[DRIVER][OFFLOAD] Do not invoke unbundler on unsupported file types.

clang-offload-bundler should not be invoked with the unbundling action
when the input file type does not match the action type. For example,
.so files should be unbundled during linking phase and should be linked
only with the host code.

llvm-svn: 343335

4 files changed, 26 insertions, 3 deletions

diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index d3569836e0e..c5aed55eb94 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -2568,6 +2568,8 @@ class OffloadingActionBuilder final {
     getDeviceDependences(OffloadAction::DeviceDependences &DA,
                          phases::ID CurPhase, phases::ID FinalPhase,
                          PhasesTy &Phases) override {
+      if (OpenMPDeviceActions.empty())
+        return ABRT_Inactive;
 
       // We should always have an action for each input.
       assert(OpenMPDeviceActions.size() == ToolChains.size() &&
@@ -2611,6 +2613,17 @@ class OffloadingActionBuilder final {
       // If this is an unbundling action use it as is for each OpenMP toolchain.
       if (auto *UA = dyn_cast<OffloadUnbundlingJobAction>(HostAction)) {
         OpenMPDeviceActions.clear();
+        auto *IA = cast<InputAction>(UA->getInputs().back());
+        std::string FileName = IA->getInputArg().getAsString(Args);
+        // Check if the type of the file is the same as the action. Do not
+        // unbundle it if it is not. Do not unbundle .so files, for example,
+        // which are not object files.
+        if (IA->getType() == types::TY_Object &&
+            (!llvm::sys::path::has_extension(FileName) ||
+             types::lookupTypeForExtension(
+                 llvm::sys::path::extension(FileName).drop_front()) !=
+                 types::TY_Object))
+          return ABRT_Inactive;
         for (unsigned I = 0; I < ToolChains.size(); ++I) {
           OpenMPDeviceActions.push_back(UA);
           UA->registerDependentActionInfo(
@@ -2855,6 +2868,11 @@ public:
         OffloadKind |= SB->getAssociatedOffloadKind();
     }
 
+    // Do not use unbundler if the Host does not depend on device action.
+    if (OffloadKind == Action::OFK_None && CanUseBundler)
+      if (auto *UA = dyn_cast<OffloadUnbundlingJobAction>(HostAction))
+        HostAction = UA->getInputs().back();
+
     return false;
   }
 
diff --git a/clang/test/Driver/Inputs/in.so b/clang/test/Driver/Inputs/in.so
new file mode 100644
index 00000000000..8b137891791
--- /dev/null
+++ b/clang/test/Driver/Inputs/in.so
@@ -0,0 +1 @@
+
diff --git a/clang/test/Driver/openmp-offload-gpu.c b/clang/test/Driver/openmp-offload-gpu.c
index c0a85169f80..940828b82b3 100644
--- a/clang/test/Driver/openmp-offload-gpu.c
+++ b/clang/test/Driver/openmp-offload-gpu.c
@@ -89,13 +89,15 @@
 /// Check cubin file unbundling and usage by nvlink
 // RUN:   touch %t.o
 // RUN:   %clang -### -target powerpc64le-unknown-linux-gnu -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda \
-// RUN:          -no-canonical-prefixes -save-temps %t.o 2>&1 \
+// RUN:          -no-canonical-prefixes -save-temps %t.o %S/Inputs/in.so 2>&1 \
 // RUN:   | FileCheck -check-prefix=CHK-CUBIN-UNBUNDLING-NVLINK %s
 
 /// Use DAG to ensure that cubin file has been unbundled.
+// CHK-CUBIN-UNBUNDLING-NVLINK-NOT: clang-offload-bundler{{.*}}" "-type=o"{{.*}}in.so
 // CHK-CUBIN-UNBUNDLING-NVLINK-DAG: nvlink{{.*}}" {{.*}}"[[CUBIN:.*\.cubin]]"
 // CHK-CUBIN-UNBUNDLING-NVLINK-DAG: clang-offload-bundler{{.*}}" "-type=o" {{.*}}"-outputs={{.*}}[[CUBIN]]
 // CHK-CUBIN-UNBUNDLING-NVLINK-DAG-SAME: "-unbundle"
+// CHK-CUBIN-UNBUNDLING-NVLINK-NOT: clang-offload-bundler{{.*}}" "-type=o"{{.*}}in.so
 
 /// ###########################################################################
 
diff --git a/clang/test/Driver/openmp-offload.c b/clang/test/Driver/openmp-offload.c
index af5a527d517..ac0190af876 100644
--- a/clang/test/Driver/openmp-offload.c
+++ b/clang/test/Driver/openmp-offload.c
@@ -358,7 +358,7 @@
 /// ###########################################################################
 
 /// Check separate compilation with offloading - bundling actions
-// RUN:   %clang -### -ccc-print-phases -fopenmp=libomp -c -o %t.o -lsomelib -target powerpc64le-linux -fopenmp-targets=powerpc64le-ibm-linux-gnu,x86_64-pc-linux-gnu %s -no-canonical-prefixes 2>&1 \
+// RUN:   %clang -### -ccc-print-phases -fopenmp=libomp -c -o %t.o %S/Input/in.so -lsomelib -target powerpc64le-linux -fopenmp-targets=powerpc64le-ibm-linux-gnu,x86_64-pc-linux-gnu %s -no-canonical-prefixes 2>&1 \
 // RUN:   | FileCheck -check-prefix=CHK-BUACTIONS %s
 
 // CHK-BUACTIONS: 0: input, "[[INPUT:.+\.c]]", c, (host-openmp)
@@ -500,7 +500,7 @@
 // RUN:   touch %t.o
 // RUN:   %clang -###  -fopenmp=libomp -o %t.out -lsomelib -target powerpc64le-linux -fopenmp-targets=powerpc64le-ibm-linux-gnu,x86_64-pc-linux-gnu %t.o -no-canonical-prefixes 2>&1 \
 // RUN:   | FileCheck -check-prefix=CHK-UBJOBS2 %s
-// RUN:   %clang -### -fopenmp=libomp -o %t.out -lsomelib -target powerpc64le-linux -fopenmp-targets=powerpc64le-ibm-linux-gnu,x86_64-pc-linux-gnu %t.o -save-temps -no-canonical-prefixes 2>&1 \
+// RUN:   %clang -### -fopenmp=libomp -o %t.out -lsomelib -target powerpc64le-linux -fopenmp-targets=powerpc64le-ibm-linux-gnu,x86_64-pc-linux-gnu %t.o %S/Inputs/in.so -save-temps -no-canonical-prefixes 2>&1 \
 // RUN:   | FileCheck -check-prefix=CHK-UBJOBS2-ST %s
 
 // Unbundle and create host BC.
@@ -574,11 +574,13 @@
 // CHK-UBJOBS2: ld{{(\.exe)?}}" {{.*}}"-o" "
 // CHK-UBJOBS2-SAME: [[HOSTBIN:[^\\/]+\.out]]" {{.*}}"{{.*}}[[HOSTOBJ]]" {{.*}}"-T" "
 // CHK-UBJOBS2-SAME: [[LKS:[^\\/]+\.lk]]"
+// CHK-UBJOBS2-ST-NOT: clang-offload-bundler{{.*}}in.so
 // CHK-UBJOBS2-ST: clang-offload-bundler{{.*}}" "-type=o" "-targets=host-powerpc64le-unknown-linux,openmp-powerpc64le-ibm-linux-gnu,openmp-x86_64-pc-linux-gnu" "-inputs=
 // CHK-UBJOBS2-ST-SAME: [[INPUT:[^\\/]+\.o]]" "-outputs=
 // CHK-UBJOBS2-ST-SAME: [[HOSTOBJ:[^\\/,]+\.o]],
 // CHK-UBJOBS2-ST-SAME: [[T1OBJ:[^\\/,]+\.o]],
 // CHK-UBJOBS2-ST-SAME: [[T2OBJ:[^\\/,]+\.o]]" "-unbundle"
+// CHK-UBJOBS2-ST-NOT: clang-offload-bundler{{.*}}in.so
 // CHK-UBJOBS2-ST: ld{{(\.exe)?}}" {{.*}}"-o" "
 // CHK-UBJOBS2-ST-SAME: [[T1BIN:[^\\/]+\.out-openmp-powerpc64le-ibm-linux-gnu]]" {{.*}}"{{.*}}[[T1OBJ]]"
 // CHK-UBJOBS2-ST: ld{{(\.exe)?}}" {{.*}}"-o" "