================
@@ -0,0 +1,44 @@
+// RUN: %clang -x cuda %s -Xarch_nvptx64 -O3 -S -nogpulib -nogpuinc -### 2>&1
| FileCheck -check-prefix=O3ONCE %s
+// RUN: %clang -x cuda %s -Xarch_device -O3 -S -nogpulib -nogpuinc -### 2>&1 |
FileCheck -check-prefix=O3ONCE %s
+// RUN: %clang -x hip %s -Xarch_amdgcn -O3 -S -nogpulib -nogpuinc -### 2>&1 |
FileCheck -check-prefix=O3ONCE %s
+// RUN: %clang -fopenmp -fopenmp-targets=amdgcn-amd-amdhsa -nogpulib -nogpuinc
\
+// RUN: -Xarch_amdgcn -march=gfx90a -Xarch_amdgcn -O3 -S -### %s 2>&1 \
+// RUN: | FileCheck -check-prefix=O3ONCE %s
+// RUN: %clang -fopenmp -fopenmp-targets=nvptx64-nvidia-cuda -nogpulib
-nogpuinc \
+// RUN: -Xarch_nvptx64 -march=sm_52 -Xarch_nvptx64 -O3 -S -### %s 2>&1 \
+// RUN: | FileCheck -check-prefix=O3ONCE %s
+// O3ONCE: "-O3"
+// O3ONCE-NOT: "-O3"
+
+// RUN: %clang -fopenmp=libomp
-fopenmp-targets=nvptx64-nvidia-cuda,amdgcn-amd-amdhsa -nogpulib \
+// RUN: --target=x86_64-unknown-linux-gnu -Xarch_nvptx64
--offload-arch=sm_52,sm_60 -nogpuinc \
+// RUN: -Xarch_amdgcn --offload-arch=gfx90a,gfx1030 -ccc-print-bindings -###
%s 2>&1 \
+// RUN: | FileCheck -check-prefix=OPENMP %s
+//
+// OPENMP: # "x86_64-unknown-linux-gnu" - "clang", inputs: ["[[INPUT:.+]]"],
output: "[[HOST_BC:.+]]"
+// OPENMP: # "amdgcn-amd-amdhsa" - "clang", inputs: ["[[INPUT]]",
"[[HOST_BC]]"], output: "[[GFX1030_BC:.+]]"
+// OPENMP: # "amdgcn-amd-amdhsa" - "clang", inputs: ["[[INPUT]]",
"[[HOST_BC]]"], output: "[[GFX90A_BC:.+]]"
+// OPENMP: # "nvptx64-nvidia-cuda" - "clang", inputs: ["[[INPUT]]",
"[[HOST_BC]]"], output: "[[SM52_PTX:.+]]"
+// OPENMP: # "nvptx64-nvidia-cuda" - "NVPTX::Assembler", inputs:
["[[SM52_PTX]]"], output: "[[SM52_CUBIN:.+]]"
+// OPENMP: # "nvptx64-nvidia-cuda" - "clang", inputs: ["[[INPUT]]",
"[[HOST_BC]]"], output: "[[SM60_PTX:.+]]"
+// OPENMP: # "nvptx64-nvidia-cuda" - "NVPTX::Assembler", inputs:
["[[SM60_PTX]]"], output: "[[SM60_CUBIN:.+]]"
+// OPENMP: # "x86_64-unknown-linux-gnu" - "Offload::Packager", inputs:
["[[GFX1030_BC]]", "[[GFX90A_BC]]", "[[SM52_CUBIN]]", "[[SM60_CUBIN]]"],
output: "[[BINARY:.+]]"
+// OPENMP: # "x86_64-unknown-linux-gnu" - "clang", inputs: ["[[HOST_BC]]",
"[[BINARY]]"], output: "[[HOST_OBJ:.+]]"
+// OPENMP: # "x86_64-unknown-linux-gnu" - "Offload::Linker", inputs:
["[[HOST_OBJ]]"], output: "a.out"
+
+// RUN: %clang -x cuda %s --offload-arch=sm_52,sm_60 -Xarch_sm_52 -O3
-Xarch_sm_60 -O0 \
+// RUN: --target=x86_64-unknown-linux-gnu -Xarch_host -O3 -S -nogpulib
-nogpuinc -### 2>&1 \
+// RUN: | FileCheck -check-prefix=CUDA %s
+// CUDA: "-cc1" "-triple" "nvptx64-nvidia-cuda" {{.*}}"-target-cpu" "sm_52"
{{.*}}"-O3"
+// CUDA: "-cc1" "-triple" "nvptx64-nvidia-cuda" {{.*}}"-target-cpu" "sm_60"
{{.*}}"-O0"
+// CUDA: "-cc1" "-triple" "x86_64-unknown-linux-gnu" {{.*}}"-O3"
+
+// RUN: %clang -x cuda %s -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda
\
+// RUN: -Xarch_sm_52 --offload-arch=sm_52 -S -nogpulib -nogpuinc -### 2>&1 \
+// RUN: | FileCheck -check-prefix=SPECIFIC %s
+// SPECIFIC: "-cc1" "-triple" "nvptx64-nvidia-cuda" {{.*}}"-target-cpu" "sm_52"
----------------
Artem-B wrote:
I'm not sure I understand what exactly it's intended to do and how is that
supposed to work. I'm missing something here. Can you elaborate on the intended
use case here and walk me through it?
So, the top-level driver sees `-Xarch_amdgcn`. I would assume that we want it
to pass the following `--offloard-arch=gfx90a` to all cc1 subcompilations using
amdgcn. What is `--offload-arch=gfx90a` expected to do in this case, once it's
passed to cc1? I can see how it might be used if we have a single cc1
subcompilation to tell that cc1 invocation to target gfx90a, but that looks
like an odd fix for an odd problem. IMO that's something that should be done by
the top-level driver.
If we have multiple cc1 subcompilation using amdgcn, then we'll end up with
multiple cc1 invocations with potentially identical target... Not sure if
that's going to cause troubles further down the compilation pipeline. E.g. can
we incorporate N binaries for the same target? How will runtime figure out
which one to load?
https://github.com/llvm/llvm-project/pull/125421
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