[RISCV] Collect library directories and triples for riscv64 triple too

[edward-jones]

Summary

When setting up library and tools paths when detecting an accompanying GCC installation only riscv32 was handled. As a consequence when targetting riscv64 neither the linker nor libraries would be found. This adds handling and tests for riscv64.

[jrtc27]

lib/Driver/ToolChains/Gnu.cpp

1911–1912

Surely this should remain as RISCV32LibDirs? Also, should we reverse the order (put "/lib32" first) to match every single other architecture?

1911–1912

RISCV32Triples? Also, why do we have no "riscv32-linux-gnu" entry like the other architectures?

1913

Order as for 32.

1914

riscv64-linux-gnu?

[jrtc27]

test/Driver/riscv64-toolchain.c

71

This (and below) are the only instances of CPU-linux-unknown-elf in the whole of clang (and there are only two instances of CPU-linux-elf, both in test/Modules/pch_container.m), apart from the riscv32 ones they were copied from. Perhaps they should be riscv64-linux-unknown-gnu instead? Notably, when parsed as CPU-company-kernel-OS this in fact sets *company* to linux and *kernel* to unknown, whereas if you really mean the full 4-tuple should the linux and unknown not be interchanged?

87

riscv64-linux-unknown-gnu as before.

[edward-jones]

I've incorporated your suggested changes and added riscv32/64-linux-gnu entrys to the Triple + LibDirs lists.

Is it worth also updating the riscv32-toolchain.c test in this patch to rename riscv32-linux-unknown-elf to riscv32-unknown-linux-gnu? It looks like "riscv32-linux-unknown-elf" has been there since the the driver was introduced.

[asb]

This got missed somehow as I had a functionally identical patch in my local development tree (though not with as thorough tests - thanks for that!). LGTM, thanks Ed.

lib/Driver/ToolChains/Gnu.cpp

/*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
   static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
   static const char *const PPC64Triples[] = {
       "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu",
       "powerpc64-suse-linux", "ppc64-redhat-linux"};
   static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
   static const char *const PPC64LETriples[] = {
       "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu",
       "powerpc64le-suse-linux", "ppc64le-redhat-linux"};
 
-  static const char *const RISCV32LibDirs[] = {"/lib", "/lib32"};
-  static const char *const RISCVTriples[] = {"riscv32-unknown-linux-gnu",
-                                             "riscv64-unknown-linux-gnu",
+  static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"};
+  static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu",
+                                               "riscv32-linux-gnu",
                                                "riscv32-unknown-elf"};
+  static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"};
+  static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu",
+                                               "riscv64-linux-gnu",
+                                               "riscv64-unknown-elf"};
 
   static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
   static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
                                                "sparcv8-linux-gnu"};
   static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
   static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
                                                "sparcv9-linux-gnu"};
 
case llvm::Triple::ppc64:
     BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples));
     break;
   case llvm::Triple::ppc64le:
     LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
     TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
     break;
   case llvm::Triple::riscv32:
     LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
+    TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
+    BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
+    BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
+    break;
+  case llvm::Triple::riscv64:
+    LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
+    TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
     BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
-    TripleAliases.append(begin(RISCVTriples), end(RISCVTriples));
-    BiarchTripleAliases.append(begin(RISCVTriples), end(RISCVTriples));
+    BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
     break;
   case llvm::Triple::sparc:
   case llvm::Triple::sparcel:
     LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
     TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
     BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
     BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
     break;

test/Driver/Inputs/basic_riscv64_tree/bin/riscv64-unknown-elf-ld

+#!/bin/true

test/Driver/riscv64-toolchain.c

 // A basic clang -cc1 command-line, and simple environment check.
 
 // RUN: %clang %s -### -no-canonical-prefixes -target riscv64 2>&1 | FileCheck -check-prefix=CC1 %s
 // CC1: clang{{.*}} "-cc1" "-triple" "riscv64"
 
+// RUN: %clang %s -### -no-canonical-prefixes \
+// RUN:   -target riscv64-unknown-elf \
+// RUN:   --gcc-toolchain=%S/Inputs/basic_riscv64_tree \
+// RUN:   --sysroot=%S/Inputs/basic_riscv64_tree/riscv64-unknown-elf 2>&1 \
+// RUN:   | FileCheck -check-prefix=C-RV64-BAREMETAL-LP64 %s
+
+// C-RV64-BAREMETAL-LP64: "-fuse-init-array"
+// C-RV64-BAREMETAL-LP64: "{{.*}}Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1/../../../../bin{{/|\\\\}}riscv64-unknown-elf-ld"
+// C-RV64-BAREMETAL-LP64: "--sysroot={{.*}}/Inputs/basic_riscv64_tree/riscv64-unknown-elf"
+// C-RV64-BAREMETAL-LP64: "{{.*}}/Inputs/basic_riscv64_tree/riscv64-unknown-elf/lib{{/|\\\\}}crt0.o"
+// C-RV64-BAREMETAL-LP64: "{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1{{/|\\\\}}crtbegin.o"
+// C-RV64-BAREMETAL-LP64: "-L{{.*}}/Inputs/basic_riscv64_tree/riscv64-unknown-elf/lib"
+// C-RV64-BAREMETAL-LP64: "-L{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1"
+// C-RV64-BAREMETAL-LP64: "--start-group" "-lc" "-lgloss" "--end-group" "-lgcc"
+// C-RV64-BAREMETAL-LP64: "{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1{{/|\\\\}}crtend.o"
+
+// RUN: %clang %s -### -no-canonical-prefixes \
+// RUN:   -target riscv64-unknown-elf \
+// RUN:   --sysroot= \
+// RUN:   --gcc-toolchain=%S/Inputs/basic_riscv64_tree 2>&1 \
+// RUN:   | FileCheck -check-prefix=C-RV64-BAREMETAL-NOSYSROOT-LP64 %s
+
+// C-RV64-BAREMETAL-NOSYSROOT-LP64: "-fuse-init-array"
+// C-RV64-BAREMETAL-NOSYSROOT-LP64: "{{.*}}Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1/../../../../bin{{/|\\\\}}riscv64-unknown-elf-ld"
+// C-RV64-BAREMETAL-NOSYSROOT-LP64: "{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1/../../../../riscv64-unknown-elf/lib{{/|\\\\}}crt0.o"
+// C-RV64-BAREMETAL-NOSYSROOT-LP64: "{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1{{/|\\\\}}crtbegin.o"
+// C-RV64-BAREMETAL-NOSYSROOT-LP64: "-L{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1/../../../../riscv64-unknown-elf{{/|\\\\}}lib"
+// C-RV64-BAREMETAL-NOSYSROOT-LP64: "-L{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1"
+// C-RV64-BAREMETAL-NOSYSROOT-LP64: "--start-group" "-lc" "-lgloss" "--end-group" "-lgcc"
+// C-RV64-BAREMETAL-NOSYSROOT-LP64: "{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1{{/|\\\\}}crtend.o"
+
+// RUN: %clangxx %s -### -no-canonical-prefixes \
+// RUN:   -target riscv64-unknown-elf -stdlib=libstdc++ \
+// RUN:   --gcc-toolchain=%S/Inputs/basic_riscv64_tree \
+// RUN:   --sysroot=%S/Inputs/basic_riscv64_tree/riscv64-unknown-elf 2>&1 \
+// RUN:   | FileCheck -check-prefix=CXX-RV64-BAREMETAL-LP64 %s
+
+// CXX-RV64-BAREMETAL-LP64: "-fuse-init-array"
+// CXX-RV64-BAREMETAL-LP64: "-internal-isystem" "{{.*}}Inputs/basic_riscv64_tree/riscv64-unknown-elf/include/c++{{/|\\\\}}8.0.1"
+// CXX-RV64-BAREMETAL-LP64: "{{.*}}Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1/../../../../bin{{/|\\\\}}riscv64-unknown-elf-ld"
+// CXX-RV64-BAREMETAL-LP64: "--sysroot={{.*}}/Inputs/basic_riscv64_tree/riscv64-unknown-elf"
+// CXX-RV64-BAREMETAL-LP64: "{{.*}}/Inputs/basic_riscv64_tree/riscv64-unknown-elf/lib{{/|\\\\}}crt0.o"
+// CXX-RV64-BAREMETAL-LP64: "{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1{{/|\\\\}}crtbegin.o"
+// CXX-RV64-BAREMETAL-LP64: "-L{{.*}}/Inputs/basic_riscv64_tree/riscv64-unknown-elf/lib"
+// CXX-RV64-BAREMETAL-LP64: "-L{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1"
+// CXX-RV64-BAREMETAL-LP64: "-lstdc++" "--start-group" "-lc" "-lgloss" "--end-group" "-lgcc"
+// CXX-RV64-BAREMETAL-LP64: "{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1{{/|\\\\}}crtend.o"
+
+// RUN: %clangxx %s -### -no-canonical-prefixes \
+// RUN:   -target riscv64-unknown-elf -stdlib=libstdc++ \
+// RUN:   --sysroot= \
+// RUN:   --gcc-toolchain=%S/Inputs/basic_riscv64_tree 2>&1 \
+// RUN:   | FileCheck -check-prefix=CXX-RV64-BAREMETAL-NOSYSROOT-LP64 %s
+
+// CXX-RV64-BAREMETAL-NOSYSROOT-LP64: "-fuse-init-array"
+// CXX-RV64-BAREMETAL-NOSYSROOT-LP64: "-internal-isystem" "{{.*}}Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1/../../../../riscv64-unknown-elf/include/c++{{/|\\\\}}8.0.1"
+// CXX-RV64-BAREMETAL-NOSYSROOT-LP64: "{{.*}}Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1/../../../../bin{{/|\\\\}}riscv64-unknown-elf-ld"
+// CXX-RV64-BAREMETAL-NOSYSROOT-LP64: "{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1/../../../../riscv64-unknown-elf/lib{{/|\\\\}}crt0.o"
+// CXX-RV64-BAREMETAL-NOSYSROOT-LP64: "{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1{{/|\\\\}}crtbegin.o"
+// CXX-RV64-BAREMETAL-NOSYSROOT-LP64: "-L{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1/../../../../riscv64-unknown-elf/lib"
+// CXX-RV64-BAREMETAL-NOSYSROOT-LP64: "-L{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1"
+// CXX-RV64-BAREMETAL-NOSYSROOT-LP64: "-lstdc++" "--start-group" "-lc" "-lgloss" "--end-group" "-lgcc"
+// CXX-RV64-BAREMETAL-NOSYSROOT-LP64: "{{.*}}/Inputs/basic_riscv64_tree/lib/gcc/riscv64-unknown-elf/8.0.1{{/|\\\\}}crtend.o"
+
+// RUN: %clang %s -### -no-canonical-prefixes -fuse-ld=ld \
+// RUN:   -target riscv64-unknown-linux-gnu \
+// RUN:   --gcc-toolchain=%S/Inputs/multilib_riscv_linux_sdk \
+// RUN:   --sysroot=%S/Inputs/multilib_riscv_linux_sdk/sysroot 2>&1 \
+// RUN:   | FileCheck -check-prefix=C-RV64-LINUX-MULTI-LP64 %s
+
+// C-RV64-LINUX-MULTI-LP64: "-fuse-init-array"
+// C-RV64-LINUX-MULTI-LP64: "{{.*}}/Inputs/multilib_riscv_linux_sdk/lib/gcc/riscv64-unknown-linux-gnu/7.2.0/../../../../riscv64-unknown-linux-gnu/bin{{/|\\\\}}ld"
+// C-RV64-LINUX-MULTI-LP64: "--sysroot={{.*}}/Inputs/multilib_riscv_linux_sdk/sysroot"
+// C-RV64-LINUX-MULTI-LP64: "-m" "elf64lriscv"
+// C-RV64-LINUX-MULTI-LP64: "-dynamic-linker" "/lib/ld-linux-riscv64-lp64.so.1"
+// C-RV64-LINUX-MULTI-LP64: "{{.*}}/Inputs/multilib_riscv_linux_sdk/lib/gcc/riscv64-unknown-linux-gnu/7.2.0/lib64/lp64{{/|\\\\}}crtbegin.o"
+// C-RV64-LINUX-MULTI-LP64: "-L{{.*}}/Inputs/multilib_riscv_linux_sdk/lib/gcc/riscv64-unknown-linux-gnu/7.2.0/lib64/lp64"
+// C-RV64-LINUX-MULTI-LP64: "-L{{.*}}/Inputs/multilib_riscv_linux_sdk/sysroot/lib64/lp64"
+// C-RV64-LINUX-MULTI-LP64: "-L{{.*}}/Inputs/multilib_riscv_linux_sdk/sysroot/usr/lib64/lp64"
+
+// RUN: %clang %s -### -no-canonical-prefixes -fuse-ld=ld \
+// RUN:   -target riscv64-unknown-linux-gnu -march=rv64imafd -mabi=lp64d \
+// RUN:   --gcc-toolchain=%S/Inputs/multilib_riscv_linux_sdk \
+// RUN:   --sysroot=%S/Inputs/multilib_riscv_linux_sdk/sysroot 2>&1 \
+// RUN:   | FileCheck -check-prefix=C-RV64-LINUX-MULTI-LP64D %s
+
+// C-RV64-LINUX-MULTI-LP64D: "-fuse-init-array"
+// C-RV64-LINUX-MULTI-LP64D: "{{.*}}/Inputs/multilib_riscv_linux_sdk/lib/gcc/riscv64-unknown-linux-gnu/7.2.0/../../../../riscv64-unknown-linux-gnu/bin{{/|\\\\}}ld"
+// C-RV64-LINUX-MULTI-LP64D: "--sysroot={{.*}}/Inputs/multilib_riscv_linux_sdk/sysroot"
+// C-RV64-LINUX-MULTI-LP64D: "-m" "elf64lriscv"
+// C-RV64-LINUX-MULTI-LP64D: "-dynamic-linker" "/lib/ld-linux-riscv64-lp64d.so.1"
+// C-RV64-LINUX-MULTI-LP64D: "{{.*}}/Inputs/multilib_riscv_linux_sdk/lib/gcc/riscv64-unknown-linux-gnu/7.2.0/lib64/lp64d{{/|\\\\}}crtbegin.o"
+// C-RV64-LINUX-MULTI-LP64D: "-L{{.*}}/Inputs/multilib_riscv_linux_sdk/lib/gcc/riscv64-unknown-linux-gnu/7.2.0/lib64/lp64d"
+// C-RV64-LINUX-MULTI-LP64D: "-L{{.*}}/Inputs/multilib_riscv_linux_sdk/sysroot/lib64/lp64d"
+// C-RV64-LINUX-MULTI-LP64D: "-L{{.*}}/Inputs/multilib_riscv_linux_sdk/sysroot/usr/lib64/lp64d"
+
 // RUN: %clang -target riscv64 %s -emit-llvm -S -o - | FileCheck %s
 
 typedef __builtin_va_list va_list;
 typedef __SIZE_TYPE__ size_t;
 typedef __PTRDIFF_TYPE__ ptrdiff_t;
 typedef __WCHAR_TYPE__ wchar_t;
 
 // CHECK: @align_c = dso_local global i32 1