[clang] [clang] Propagate -ftime-report to offload lto (PR #122143)

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https://github.com/macurtis-amd created 
https://github.com/llvm/llvm-project/pull/122143

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>From e774d184e18600f272813fdf7af05cff5f878374 Mon Sep 17 00:00:00 2001
From: Matthew Curtis <macur...@amd.com>
Date: Wed, 8 Jan 2025 10:20:44 -0600
Subject: [PATCH] [clang] Propagate -ftime-report to offload lto

---
 clang/lib/Driver/ToolChains/Clang.cpp       | 4 ++++
 clang/lib/Driver/ToolChains/CommonArgs.cpp  | 4 ++++
 clang/test/Driver/amdgpu-openmp-toolchain.c | 4 ++++
 clang/test/Driver/lto.c                     | 6 ++++++
 4 files changed, 18 insertions(+)

diff --git a/clang/lib/Driver/ToolChains/Clang.cpp 
b/clang/lib/Driver/ToolChains/Clang.cpp
index a0002371da2f1b..a6258fb799b8c5 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -9281,6 +9281,10 @@ void LinkerWrapper::ConstructJob(Compilation &C, const 
JobAction &JA,
   if (const Arg *A = Args.getLastArg(options::OPT_Rpass_analysis_EQ))
     CmdArgs.push_back(Args.MakeArgString(
         Twine("--offload-opt=-pass-remarks-analysis=") + A->getValue()));
+
+  if (Args.getLastArg(options::OPT_ftime_report))
+    CmdArgs.push_back("--device-compiler=-ftime-report");
+
   if (Args.getLastArg(options::OPT_save_temps_EQ))
     CmdArgs.push_back("--save-temps");
 
diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp 
b/clang/lib/Driver/ToolChains/CommonArgs.cpp
index 60214c4d59cee5..f8967890f722cf 100644
--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
@@ -1209,6 +1209,10 @@ void tools::addLTOOptions(const ToolChain &ToolChain, 
const ArgList &Args,
   if (ImplicitMapSyms)
     CmdArgs.push_back(
         Args.MakeArgString(Twine(PluginOptPrefix) + "-implicit-mapsyms"));
+
+  if (Args.hasArg(options::OPT_ftime_report))
+    CmdArgs.push_back(
+        Args.MakeArgString(Twine(PluginOptPrefix) + "-time-passes"));
 }
 
 void tools::addOpenMPRuntimeLibraryPath(const ToolChain &TC,
diff --git a/clang/test/Driver/amdgpu-openmp-toolchain.c 
b/clang/test/Driver/amdgpu-openmp-toolchain.c
index f596708047c154..1c2ee26173139c 100644
--- a/clang/test/Driver/amdgpu-openmp-toolchain.c
+++ b/clang/test/Driver/amdgpu-openmp-toolchain.c
@@ -81,3 +81,7 @@
 // RUN:   %clang -### --target=x86_64-unknown-linux-gnu -emit-llvm -S -fopenmp 
--offload-arch=gfx803 \
 // RUN:     -stdlib=libc++ -nogpulib %s 2>&1 | FileCheck %s 
--check-prefix=LIBCXX
 // LIBCXX-NOT: include/amdgcn-amd-amdhsa/c++/v1
+
+// RUN: %clang -### -target x86_64-pc-linux-gnu -nogpulib  -fopenmp 
--offload-arch=gfx90a \
+// RUN:   -ftime-report %s 2>&1 | FileCheck %s --check-prefix=CHECK-TIME-REPORT
+// CHECK-TIME-REPORT: 
clang-linker-wrapper{{.*}}"--device-compiler=-ftime-report"
diff --git a/clang/test/Driver/lto.c b/clang/test/Driver/lto.c
index 5be95013f00d72..a85f953af37a81 100644
--- a/clang/test/Driver/lto.c
+++ b/clang/test/Driver/lto.c
@@ -114,3 +114,9 @@
 //
 // CHECK-GISEL:         "-plugin-opt=-global-isel=1"
 // CHECK-DISABLE-GISEL: "-plugin-opt=-global-isel=0"
+
+// -flto passes -time-passes when -ftime-report is passed
+// RUN: %clang --target=x86_64-unknown-linux-gnu -### %s -flto -ftime-report 
2> %t
+// RUN: FileCheck --check-prefix=CHECK-TIME-REPORT < %t %s
+
+// CHECK-TIME-REPORT: "-plugin-opt=-time-passes"

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