[Clang][VE] Correct rpath handling on VE (#67671)

Add rpath for libc++ libraries in order to not specify rpath by user
each time. Disable -frthlib-add-ppath by default for VE similar to other
architectures. Update regression tests to check modifications.

Author: kaz7

clang/lib/Driver/ToolChains/CommonArgs.cpp

@@ -902,11 +902,8 @@ void tools::addOpenMPRuntimeLibraryPath(const ToolChain &TC,
 
 void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,
                                  ArgStringList &CmdArgs) {
-  // Enable -frtlib-add-rpath by default for the case of VE.
-  const bool IsVE = TC.getTriple().isVE();
-  bool DefaultValue = IsVE;
   if (!Args.hasFlag(options::OPT_frtlib_add_rpath,
-                    options::OPT_fno_rtlib_add_rpath, DefaultValue))
+                    options::OPT_fno_rtlib_add_rpath, false))
     return;
 
   for (const auto &CandidateRPath : TC.getArchSpecificLibPaths()) {

clang/lib/Driver/ToolChains/VEToolchain.cpp

@@ -33,6 +33,7 @@ VEToolChain::VEToolChain(const Driver &D, const llvm::Triple &Triple,
   // These are OK.
 
   // Default file paths are following:
+  //   ${RESOURCEDIR}/lib/ve-unknown-linux-gnu, (== getArchSpecificLibPaths)
   //   ${RESOURCEDIR}/lib/linux/ve, (== getArchSpecificLibPaths)
   //   /lib/../lib64,
   //   /usr/lib/../lib64,
@@ -46,6 +47,7 @@ VEToolChain::VEToolChain(const Driver &D, const llvm::Triple &Triple,
 
   // Add library directories:
   //   ${BINPATH}/../lib/ve-unknown-linux-gnu, (== getStdlibPath)
+  //   ${RESOURCEDIR}/lib/ve-unknown-linux-gnu, (== getArchSpecificLibPaths)
   //   ${RESOURCEDIR}/lib/linux/ve, (== getArchSpecificLibPaths)
   //   ${SYSROOT}/opt/nec/ve/lib,
   if (std::optional<std::string> Path = getStdlibPath())
@@ -141,6 +143,12 @@ void VEToolChain::AddCXXStdlibLibArgs(const ArgList &Args,
 
   tools::addArchSpecificRPath(*this, Args, CmdArgs);
 
+  // Add paths for libc++.so and other shared libraries.
+  if (std::optional<std::string> Path = getStdlibPath()) {
+    CmdArgs.push_back("-rpath");
+    CmdArgs.push_back(Args.MakeArgString(*Path));
+  }
+
   CmdArgs.push_back("-lc++");
   if (Args.hasArg(options::OPT_fexperimental_library))
     CmdArgs.push_back("-lc++experimental");

clang/test/Driver/Inputs/basic_ve_tree/resource_dir/lib/linux/clang_rt.crtbegin-ve.o renamed to clang/test/Driver/Inputs/basic_ve_tree/lib/ve-unknown-linux-gnu/libc++.so

@@ -97,8 +97,8 @@
 // DEF-SAME: "[[SYSROOT]]/opt/nec/ve/lib/crt1.o"
 // DEF-SAME: "[[SYSROOT]]/opt/nec/ve/lib/crti.o"
 // DEF-SAME: "-z" "max-page-size=0x4000000"
-// DEF-SAME: "[[RESOURCE_DIR]]/lib/linux/clang_rt.crtbegin-ve.o"
-// DEF-SAME: "[[RESOURCE_DIR]]/lib/linux/libclang_rt.builtins-ve.a" "-lc"
-// DEF-SAME: "[[RESOURCE_DIR]]/lib/linux/libclang_rt.builtins-ve.a"
-// DEF-SAME: "[[RESOURCE_DIR]]/lib/linux/clang_rt.crtend-ve.o"
+// DEF-SAME: "[[RESOURCE_DIR]]/lib/ve-unknown-linux-gnu/clang_rt.crtbegin.o"
+// DEF-SAME: "[[RESOURCE_DIR]]/lib/ve-unknown-linux-gnu/libclang_rt.builtins.a" "-lc"
+// DEF-SAME: "[[RESOURCE_DIR]]/lib/ve-unknown-linux-gnu/libclang_rt.builtins.a"
+// DEF-SAME: "[[RESOURCE_DIR]]/lib/ve-unknown-linux-gnu/clang_rt.crtend.o"
 // DEF-SAME: "[[SYSROOT]]/opt/nec/ve/lib/crtn.o"

clang/test/Driver/Inputs/basic_ve_tree/resource_dir/lib/linux/clang_rt.crtend-ve.o renamed to clang/test/Driver/Inputs/basic_ve_tree/resource_dir/lib/ve-unknown-linux-gnu/clang_rt.crtbegin.o

@@ -25,6 +25,8 @@
 // DEFINC-SAME: "-internal-isystem" "{{.*}}/bin/../include/c++/v1"
 // DEFINC-SAME: "-internal-isystem" "[[RESOURCE_DIR]]/include"
 // DEFINC-SAME: "-internal-isystem" "[[SYSROOT]]/opt/nec/ve/include"
+// DEFINC: nld"
+// DEFINC-SAME: "-rpath" "[[SYSROOT]]/bin/../lib/ve-unknown-linux-gnu"
 
 // RUN: %clangxx -### --target=ve-unknown-linux-gnu \
 // RUN:     --sysroot %S/Inputs/basic_ve_tree %s \
@@ -146,9 +148,9 @@
 // DEF-SAME: "[[SYSROOT]]/opt/nec/ve/lib/crt1.o"
 // DEF-SAME: "[[SYSROOT]]/opt/nec/ve/lib/crti.o"
 // DEF-SAME: "-z" "max-page-size=0x4000000"
-// DEF-SAME: "[[RESOURCE_DIR]]/lib/linux/clang_rt.crtbegin-ve.o"
+// DEF-SAME: "[[RESOURCE_DIR]]/lib/ve-unknown-linux-gnu/clang_rt.crtbegin.o"
 // DEF-SAME: "-lc++" "-lc++abi" "-lunwind" "-lpthread" "-ldl"
-// DEF-SAME: "[[RESOURCE_DIR]]/lib/linux/libclang_rt.builtins-ve.a" "-lc"
-// DEF-SAME: "[[RESOURCE_DIR]]/lib/linux/libclang_rt.builtins-ve.a"
-// DEF-SAME: "[[RESOURCE_DIR]]/lib/linux/clang_rt.crtend-ve.o"
+// DEF-SAME: "[[RESOURCE_DIR]]/lib/ve-unknown-linux-gnu/libclang_rt.builtins.a" "-lc"
+// DEF-SAME: "[[RESOURCE_DIR]]/lib/ve-unknown-linux-gnu/libclang_rt.builtins.a"
+// DEF-SAME: "[[RESOURCE_DIR]]/lib/ve-unknown-linux-gnu/clang_rt.crtend.o"
 // DEF-SAME: "[[SYSROOT]]/opt/nec/ve/lib/crtn.o"