[clang] 4562b55 - [HIP] Handle `-fhip-emit-reloctable` in the new driver (#151237)

[via cfe-commits]

Author: Joseph Huber
Date: 2025-07-30T06:31:59-05:00
New Revision: 4562b557a68895f0f3f5f70875eff28a42cc0f17

URL: https://github.com/llvm/llvm-project/commit/4562b557a68895f0f3f5f70875eff28a42cc0f17
DIFF: https://github.com/llvm/llvm-project/commit/4562b557a68895f0f3f5f70875eff28a42cc0f17.diff

LOG: [HIP] Handle `-fhip-emit-reloctable` in the new driver (#151237)

Summary:
Support for this was missing, here it pretty much overrides the normal
bundling behavior and also requires a few errors to be emitted.

Added: 
    

Modified: 
    clang/lib/Driver/Driver.cpp
    clang/test/Driver/hip-dependent-options.hip
    clang/test/Driver/hip-phases.hip

Removed: 
    


################################################################################
diff  --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index 99de9519f3697..586f287843f3e 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -3606,7 +3606,7 @@ class OffloadingActionBuilder final {
           if (!CompileDeviceOnly) {
             C.getDriver().Diag(diag::err_opt_not_valid_without_opt)
                 << "-fhip-emit-relocatable"
-                << "--cuda-device-only";
+                << "--offload-device-only";
           }
         }
       }
@@ -4774,6 +4774,21 @@ Action *Driver::BuildOffloadingActions(Compilation &C,
       C.isOffloadingHostKind(Action::OFK_HIP) &&
       !Args.hasFlag(options::OPT_fgpu_rdc, options::OPT_fno_gpu_rdc, false);
 
+  bool HIPRelocatableObj =
+      C.isOffloadingHostKind(Action::OFK_HIP) &&
+      Args.hasFlag(options::OPT_fhip_emit_relocatable,
+                   options::OPT_fno_hip_emit_relocatable, false);
+
+  if (!HIPNoRDC && HIPRelocatableObj)
+    C.getDriver().Diag(diag::err_opt_not_valid_with_opt)
+        << "-fhip-emit-relocatable"
+        << "-fgpu-rdc";
+
+  if (!offloadDeviceOnly() && HIPRelocatableObj)
+    C.getDriver().Diag(diag::err_opt_not_valid_without_opt)
+        << "-fhip-emit-relocatable"
+        << "--offload-device-only";
+
   // For HIP non-rdc non-device-only compilation, create a linker wrapper
   // action for each host object to link, bundle and wrap device files in
   // it.
@@ -4894,7 +4909,7 @@ Action *Driver::BuildOffloadingActions(Compilation &C,
                            A->getOffloadingToolChain()->getTriple().isSPIRV();
       if ((A->getType() != types::TY_Object && !IsAMDGCNSPIRV &&
            A->getType() != types::TY_LTO_BC) ||
-          !HIPNoRDC || !offloadDeviceOnly())
+          HIPRelocatableObj || !HIPNoRDC || !offloadDeviceOnly())
         continue;
       ActionList LinkerInput = {A};
       A = C.MakeAction<LinkJobAction>(LinkerInput, types::TY_Image);

diff  --git a/clang/test/Driver/hip-dependent-options.hip b/clang/test/Driver/hip-dependent-options.hip
index b0dc7f289e813..e65fec2b08d7b 100644
--- a/clang/test/Driver/hip-dependent-options.hip
+++ b/clang/test/Driver/hip-dependent-options.hip
@@ -4,6 +4,12 @@
 // RUN:   %S/Inputs/hip_multiple_inputs/a.cu \
 // RUN:   %S/Inputs/hip_multiple_inputs/b.hip --gpu-bundle-output \
 // RUN: 2>&1 | FileCheck -check-prefixes=RELOCRDC %s
+// RUN: not %clang -### --target=x86_64-linux-gnu --offload-new-driver \
+// RUN:   -x hip --cuda-gpu-arch=gfx803 --cuda-gpu-arch=gfx900 \
+// RUN:   -c -fhip-emit-relocatable -nogpuinc -nogpulib --cuda-device-only -fgpu-rdc \
+// RUN:   %S/Inputs/hip_multiple_inputs/a.cu \
+// RUN:   %S/Inputs/hip_multiple_inputs/b.hip --gpu-bundle-output \
+// RUN: 2>&1 | FileCheck -check-prefixes=RELOCRDC %s
 
 // RELOCRDC: error: option '-fhip-emit-relocatable' cannot be specified with '-fgpu-rdc'
 
@@ -13,5 +19,11 @@
 // RUN:   %S/Inputs/hip_multiple_inputs/a.cu \
 // RUN:   %S/Inputs/hip_multiple_inputs/b.hip --gpu-bundle-output \
 // RUN: 2>&1 | FileCheck -check-prefixes=RELOCHOST %s
+// RUN: not %clang -### --target=x86_64-linux-gnu --offload-new-driver \
+// RUN:   -x hip --cuda-gpu-arch=gfx803 --cuda-gpu-arch=gfx900 \
+// RUN:   -c -fhip-emit-relocatable -nogpuinc -nogpulib \
+// RUN:   %S/Inputs/hip_multiple_inputs/a.cu \
+// RUN:   %S/Inputs/hip_multiple_inputs/b.hip --gpu-bundle-output \
+// RUN: 2>&1 | FileCheck -check-prefixes=RELOCHOST %s
 
-// RELOCHOST: error: option '-fhip-emit-relocatable' cannot be specified without '--cuda-device-only'
+// RELOCHOST: error: option '-fhip-emit-relocatable' cannot be specified without '--offload-device-only'

diff  --git a/clang/test/Driver/hip-phases.hip b/clang/test/Driver/hip-phases.hip
index 0ad5d76cf575e..6bac97ab8064b 100644
--- a/clang/test/Driver/hip-phases.hip
+++ b/clang/test/Driver/hip-phases.hip
@@ -275,10 +275,16 @@
 // RUN: %clang -x hip --target=x86_64-unknown-linux-gnu -ccc-print-phases --no-offload-new-driver \
 // RUN: --cuda-gpu-arch=gfx803 %s --cuda-device-only -fhip-emit-relocatable 2>&1 \
 // RUN: | FileCheck -check-prefixes=RELOC %s
+// RUN: %clang -x hip --target=x86_64-unknown-linux-gnu -ccc-print-phases --offload-new-driver \
+// RUN: --cuda-gpu-arch=gfx803 %s --cuda-device-only -fhip-emit-relocatable 2>&1 \
+// RUN: | FileCheck -check-prefixes=RELOC %s
 //
 // RUN: %clang -x hip --target=x86_64-unknown-linux-gnu -ccc-print-phases --no-offload-new-driver \
 // RUN: --cuda-gpu-arch=gfx803 %s --cuda-device-only -fhip-emit-relocatable -Wl,--disable-new-dtags \
 // RUN: 2>&1 | FileCheck -check-prefixes=RELOC %s
+// RUN: %clang -x hip --target=x86_64-unknown-linux-gnu -ccc-print-phases --offload-new-driver \
+// RUN: --cuda-gpu-arch=gfx803 %s --cuda-device-only -fhip-emit-relocatable -Wl,--disable-new-dtags \
+// RUN: 2>&1 | FileCheck -check-prefixes=RELOC %s
 //
 // RELOC-DAG: [[P0:[0-9]+]]: input, "{{.*}}hip-phases.hip", [[T:hip]], (device-[[T]], [[ARCH:gfx803]])
 // RELOC-DAG: [[P1:[0-9]+]]: preprocessor, {[[P0]]}, [[T]]-cpp-output, (device-[[T]], [[ARCH]])
@@ -286,7 +292,7 @@
 // RELOC-DAG: [[P3:[0-9]+]]: backend, {[[P2]]}, assembler, (device-[[T]], [[ARCH]])
 // RELOC-DAG: [[P4:[0-9]+]]: assembler, {[[P3]]}, object, (device-[[T]], [[ARCH]])
 // RELOC-NOT: linker
-// RELOC-DAG: [[P5:[0-9]+]]: offload, "device-[[T]] (amdgcn-amd-amdhsa:[[ARCH]])" {[[P4]]}, object
+// RELOC-DAG: [[P5:[0-9]+]]: offload, "device-[[T]] (amdgcn-amd-amdhsa:[[ARCH]])" {[[P4]]}
 // RELOC-NOT: host
 
 //