[clang] [flang] [Flang][AMDGPU] Add rocm-path flag (PR #88190)

Dominik Adamski via cfe-commits cfe-commits at lists.llvm.org
Thu Apr 11 04:50:31 PDT 2024


https://github.com/DominikAdamski updated https://github.com/llvm/llvm-project/pull/88190

>From 44def17f36e8e27eb4232681e5ae7eff5de6d90f Mon Sep 17 00:00:00 2001
From: Dominik Adamski <dominik.adamski at amd.com>
Date: Tue, 9 Apr 2024 14:35:26 -0500
Subject: [PATCH 1/3] [Flang][AMDGPU] Add rocm-path flag

ROCm installation path is used for finding and automatically
linking required bitcode libraries.
---
 clang/include/clang/Driver/Options.td    |  3 ++-
 clang/lib/Driver/ToolChains/Flang.cpp    |  4 ++++
 flang/test/Driver/driver-help-hidden.f90 |  1 +
 flang/test/Driver/driver-help.f90        |  1 +
 flang/test/Driver/omp-driver-offload.f90 | 21 +++++++++++++++++++++
 5 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index f745e573eb2686..651aa10150c06e 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -1341,7 +1341,8 @@ def hip_link : Flag<["--"], "hip-link">, Group<opencl_Group>,
   HelpText<"Link clang-offload-bundler bundles for HIP">;
 def no_hip_rt: Flag<["-"], "no-hip-rt">, Group<hip_Group>,
   HelpText<"Do not link against HIP runtime libraries">;
-def rocm_path_EQ : Joined<["--"], "rocm-path=">, Group<hip_Group>,
+def rocm_path_EQ : Joined<["--"], "rocm-path=">,
+  Visibility<[FlangOption]>, Group<hip_Group>,
   HelpText<"ROCm installation path, used for finding and automatically linking required bitcode libraries.">;
 def hip_path_EQ : Joined<["--"], "hip-path=">, Group<hip_Group>,
   HelpText<"HIP runtime installation path, used for finding HIP version and adding HIP include path.">;
diff --git a/clang/lib/Driver/ToolChains/Flang.cpp b/clang/lib/Driver/ToolChains/Flang.cpp
index 2c83f70eb7887e..75e4ead81e43ed 100644
--- a/clang/lib/Driver/ToolChains/Flang.cpp
+++ b/clang/lib/Driver/ToolChains/Flang.cpp
@@ -342,6 +342,10 @@ void Flang::AddAMDGPUTargetArgs(const ArgList &Args,
     StringRef Val = A->getValue();
     CmdArgs.push_back(Args.MakeArgString("-mcode-object-version=" + Val));
   }
+
+  // Check ROCm path if specified
+  const ToolChain &TC = getToolChain();
+  TC.getDeviceLibs(Args);
 }
 
 void Flang::addTargetOptions(const ArgList &Args,
diff --git a/flang/test/Driver/driver-help-hidden.f90 b/flang/test/Driver/driver-help-hidden.f90
index 48f48f5384fdc5..10b15fb454b9aa 100644
--- a/flang/test/Driver/driver-help-hidden.f90
+++ b/flang/test/Driver/driver-help-hidden.f90
@@ -144,6 +144,7 @@
 ! CHECK-NEXT: -print-target-triple    Print the normalized target triple
 ! CHECK-NEXT: -pthread                Support POSIX threads in generated code
 ! CHECK-NEXT: -P                      Disable linemarker output in -E mode
+! CHECK-NEXT: --rocm-path=<value> ROCm installation path, used for finding and automatically linking required bitcode libraries.
 ! CHECK-NEXT: -Rpass-analysis=<value> Report transformation analysis from optimization passes whose name matches the given POSIX regular expression
 ! CHECK-NEXT: -Rpass-missed=<value>   Report missed transformations by optimization passes whose name matches the given POSIX regular expression
 ! CHECK-NEXT: -Rpass=<value>          Report transformations performed by optimization passes whose name matches the given POSIX regular expression
diff --git a/flang/test/Driver/driver-help.f90 b/flang/test/Driver/driver-help.f90
index 38f74395a678ab..ed5af2a68eb044 100644
--- a/flang/test/Driver/driver-help.f90
+++ b/flang/test/Driver/driver-help.f90
@@ -132,6 +132,7 @@
 ! HELP-NEXT: -print-target-triple    Print the normalized target triple
 ! HELP-NEXT: -pthread                Support POSIX threads in generated code
 ! HELP-NEXT: -P                      Disable linemarker output in -E mode
+! HELP-NEXT:  --rocm-path=<value> ROCm installation path, used for finding and automatically linking required bitcode libraries.
 ! HELP-NEXT: -Rpass-analysis=<value> Report transformation analysis from optimization passes whose name matches the given POSIX regular expression
 ! HELP-NEXT: -Rpass-missed=<value>   Report missed transformations by optimization passes whose name matches the given POSIX regular expression
 ! HELP-NEXT: -Rpass=<value>          Report transformations performed by optimization passes whose name matches the given POSIX regular expression
diff --git a/flang/test/Driver/omp-driver-offload.f90 b/flang/test/Driver/omp-driver-offload.f90
index 7e9a73627cd757..836dcfc85eb9de 100644
--- a/flang/test/Driver/omp-driver-offload.f90
+++ b/flang/test/Driver/omp-driver-offload.f90
@@ -201,3 +201,24 @@
 ! RUN:      -nogpulibc %s 2>&1 \
 ! RUN:   | FileCheck --check-prefix=NO-LIBC-GPU-AMDGPU %s
 ! NO-LIBC-GPU-AMDGPU-NOT: "-lcgpu-amdgpu"
+
+! RUN:   rm -rf %t/Inputs
+
+! RUN:   not %flang -### -v --target=x86_64-unknown-linux-gnu -fopenmp  \
+! RUN:      --offload-arch=gfx900 \
+! RUN:      --rocm-path=%t/Inputs/rocm %s 2>&1 \
+! RUN:   | FileCheck --check-prefix=ROCM-PATH-NOT-FOUND %s
+! ROCM-PATH-NOT-FOUND: error: cannot find ROCm device library;
+
+! RUN:   rm -rf %t/Inputs
+! RUN:   mkdir -p %t/Inputs
+! RUN:   cp -r %S/../../../clang/test/Driver/Inputs/rocm %t/Inputs
+! RUN:   mkdir -p %t/Inputs/rocm/share/hip
+! RUN:   mkdir -p %t/Inputs/rocm/hip
+! RUN: mv %t/Inputs/rocm/bin/.hipVersion %t/Inputs/rocm/share/hip/version
+
+! RUN:   %flang -### -v --target=x86_64-unknown-linux-gnu -fopenmp  \
+! RUN:      --offload-arch=gfx900 \
+! RUN:      --rocm-path=%t/Inputs/rocm %s 2>&1 \
+! RUN:   | FileCheck --check-prefix=ROCM-PATH %s
+! ROCM-PATH: Found HIP installation: {{.*Inputs.*rocm}}, version 3.6.20214-a2917cd

>From 1d0ecee2b09e91cc9ce6f0c79e27357a2c8f58ff Mon Sep 17 00:00:00 2001
From: Dominik Adamski <dominik.adamski at amd.com>
Date: Tue, 9 Apr 2024 15:44:52 -0500
Subject: [PATCH 2/3] Remove extra new line

---
 flang/test/Driver/omp-driver-offload.f90 | 1 -
 1 file changed, 1 deletion(-)

diff --git a/flang/test/Driver/omp-driver-offload.f90 b/flang/test/Driver/omp-driver-offload.f90
index 836dcfc85eb9de..f3993fdbdb2126 100644
--- a/flang/test/Driver/omp-driver-offload.f90
+++ b/flang/test/Driver/omp-driver-offload.f90
@@ -203,7 +203,6 @@
 ! NO-LIBC-GPU-AMDGPU-NOT: "-lcgpu-amdgpu"
 
 ! RUN:   rm -rf %t/Inputs
-
 ! RUN:   not %flang -### -v --target=x86_64-unknown-linux-gnu -fopenmp  \
 ! RUN:      --offload-arch=gfx900 \
 ! RUN:      --rocm-path=%t/Inputs/rocm %s 2>&1 \

>From b701de98327ec247ed6491302216c7f3b2949677 Mon Sep 17 00:00:00 2001
From: Dominik Adamski <dominik.adamski at amd.com>
Date: Wed, 10 Apr 2024 06:38:01 -0500
Subject: [PATCH 3/3] Applied remarks

---
 clang/lib/Driver/ToolChains/Flang.cpp    | 12 +++++++++++-
 flang/test/Driver/omp-driver-offload.f90 |  5 ++---
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/clang/lib/Driver/ToolChains/Flang.cpp b/clang/lib/Driver/ToolChains/Flang.cpp
index 75e4ead81e43ed..bc2d5322e93326 100644
--- a/clang/lib/Driver/ToolChains/Flang.cpp
+++ b/clang/lib/Driver/ToolChains/Flang.cpp
@@ -344,8 +344,18 @@ void Flang::AddAMDGPUTargetArgs(const ArgList &Args,
   }
 
   // Check ROCm path if specified
+  if (!Args.getLastArg(options::OPT_rocm_path_EQ))
+    return;
+
+  // If ROCm path is specified, check correctness of the path
   const ToolChain &TC = getToolChain();
-  TC.getDeviceLibs(Args);
+  std::string HIPVersion;
+  llvm::raw_string_ostream HIPInfo(HIPVersion);
+  TC.printVerboseInfo(HIPInfo);
+  llvm::StringRef HIPInfoStrRef(HIPInfo.str());
+  if (!HIPInfoStrRef.contains("Found HIP installation") &&
+      !Args.getLastArg(options::OPT_nogpulib))
+    TC.getDriver().Diag(diag::err_drv_no_rocm_device_lib) << 0;
 }
 
 void Flang::addTargetOptions(const ArgList &Args,
diff --git a/flang/test/Driver/omp-driver-offload.f90 b/flang/test/Driver/omp-driver-offload.f90
index f3993fdbdb2126..7791d4b252a853 100644
--- a/flang/test/Driver/omp-driver-offload.f90
+++ b/flang/test/Driver/omp-driver-offload.f90
@@ -202,10 +202,9 @@
 ! RUN:   | FileCheck --check-prefix=NO-LIBC-GPU-AMDGPU %s
 ! NO-LIBC-GPU-AMDGPU-NOT: "-lcgpu-amdgpu"
 
-! RUN:   rm -rf %t/Inputs
 ! RUN:   not %flang -### -v --target=x86_64-unknown-linux-gnu -fopenmp  \
 ! RUN:      --offload-arch=gfx900 \
-! RUN:      --rocm-path=%t/Inputs/rocm %s 2>&1 \
+! RUN:      --rocm-path=%S/Inputs/rocm %s 2>&1 \
 ! RUN:   | FileCheck --check-prefix=ROCM-PATH-NOT-FOUND %s
 ! ROCM-PATH-NOT-FOUND: error: cannot find ROCm device library;
 
@@ -214,7 +213,7 @@
 ! RUN:   cp -r %S/../../../clang/test/Driver/Inputs/rocm %t/Inputs
 ! RUN:   mkdir -p %t/Inputs/rocm/share/hip
 ! RUN:   mkdir -p %t/Inputs/rocm/hip
-! RUN: mv %t/Inputs/rocm/bin/.hipVersion %t/Inputs/rocm/share/hip/version
+! RUN:   mv %t/Inputs/rocm/bin/.hipVersion %t/Inputs/rocm/share/hip/version
 
 ! RUN:   %flang -### -v --target=x86_64-unknown-linux-gnu -fopenmp  \
 ! RUN:      --offload-arch=gfx900 \



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