abidh created this revision.
abidh added reviewers: asb, jroelofs, manojgupta, clang.
Herald added subscribers: cfe-commits, frasercrmck, luismarques, apazos,
sameer.abuasal, pzheng, s.egerton, lenary, Jim, jocewei, PkmX, the_o,
brucehoult, MartinMosbeck, rogfer01, edward-jones, zzheng, jrtc27, niosHD,
sabuasal, simoncook, johnrusso, rbar, kristof.beyls.
Herald added a project: clang.
abidh requested review of this revision.
I am working on a baremetal riscv toolchain using LLVM runtime and
LLD linker. Baremetal.cpp provides most of the things needed for such
toolchain. So I have modified it to also handle riscv64/32-unknown-elf
targets alongside arm-none-eabi.
Currently, targets like riscv64-unknown-elf are handled by RISCVToolChain
which mostly expects a gcc toolchain to be present. If you dont
want the dependency on gcc-toolchain/libgloss or want to use LLD, then
RISCVToolChain is not a good fit.
So in the toolchain selection code, I have made this dependency of
RISCVToolChain on gcc toolchain explicit. It is created if gcc-toolchain
option is present. Otherwise Baremetal toolchain is created. I will be
happy to hear if there is a better way to choose between these two
toolchains.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D91442
Files:
clang/lib/Driver/Driver.cpp
clang/lib/Driver/ToolChains/BareMetal.cpp
clang/test/Driver/baremetal.cpp
clang/test/Driver/riscv-gnutools.c
clang/test/Driver/riscv32-toolchain.c
clang/test/Driver/riscv64-toolchain.c
Index: clang/test/Driver/riscv64-toolchain.c
===================================================================
--- clang/test/Driver/riscv64-toolchain.c
+++ clang/test/Driver/riscv64-toolchain.c
@@ -1,11 +1,13 @@
// A basic clang -cc1 command-line, and simple environment check.
// REQUIRES: platform-linker
-// RUN: %clang %s -### -no-canonical-prefixes -target riscv64 2>&1 | FileCheck -check-prefix=CC1 %s
+// RUN: %clang %s -### -no-canonical-prefixes -target riscv64 \
+// RUN: --gcc-toolchain=%S/Inputs/basic_riscv64_tree 2>&1 | FileCheck -check-prefix=CC1 %s
// CC1: clang{{.*}} "-cc1" "-triple" "riscv64"
// Test interaction with -fuse-ld=lld, if lld is available.
-// RUN: %clang %s -### -no-canonical-prefixes -target riscv32 -fuse-ld=lld 2>&1 | FileCheck -check-prefix=LLD %s
+// RUN: %clang %s -### -no-canonical-prefixes -target riscv32 -fuse-ld=lld \
+// RUN: --gcc-toolchain=%S/Inputs/basic_riscv64_tree 2>&1 | FileCheck -check-prefix=LLD %s
// LLD: {{(error: invalid linker name in argument '-fuse-ld=lld')|(ld.lld)}}
// In the below tests, --rtlib=platform is used so that the driver ignores
@@ -133,6 +135,7 @@
// Check that --rtlib can be used to override the used runtime library
// RUN: %clang %s -### -no-canonical-prefixes \
+// RUN: --gcc-toolchain=%S/Inputs/multilib_riscv_elf_sdk \
// RUN: -target riscv64-unknown-elf --rtlib=libgcc 2>&1 \
// RUN: | FileCheck -check-prefix=C-RV64-RTLIB-LIBGCC-LP64 %s
// C-RV64-RTLIB-LIBGCC-LP64: "{{.*}}crt0.o"
@@ -141,6 +144,7 @@
// C-RV64-RTLIB-LIBGCC-LP64: "{{.*}}crtend.o"
// RUN: %clang %s -### -no-canonical-prefixes \
+// RUN: --gcc-toolchain=%S/Inputs/multilib_riscv_elf_sdk \
// RUN: -target riscv64-unknown-elf --rtlib=compiler-rt 2>&1 \
// RUN: | FileCheck -check-prefix=C-RV64-RTLIB-COMPILERRT-LP64 %s
// C-RV64-RTLIB-COMPILERRT-LP64: "{{.*}}crt0.o"
Index: clang/test/Driver/riscv32-toolchain.c
===================================================================
--- clang/test/Driver/riscv32-toolchain.c
+++ clang/test/Driver/riscv32-toolchain.c
@@ -1,11 +1,13 @@
// A basic clang -cc1 command-line, and simple environment check.
// REQUIRES: platform-linker
-// RUN: %clang %s -### -no-canonical-prefixes -target riscv32 2>&1 | FileCheck -check-prefix=CC1 %s
+// RUN: %clang %s -### -no-canonical-prefixes -target riscv32 \
+// RUN: --gcc-toolchain=%S/Inputs/basic_riscv32_tree 2>&1 | FileCheck -check-prefix=CC1 %s
// CC1: clang{{.*}} "-cc1" "-triple" "riscv32"
// Test interaction with -fuse-ld=lld, if lld is available.
-// RUN: %clang %s -### -no-canonical-prefixes -target riscv32 -fuse-ld=lld 2>&1 | FileCheck -check-prefix=LLD %s
+// RUN: %clang %s -### -no-canonical-prefixes -target riscv32 \
+// RUN: --gcc-toolchain=%S/Inputs/basic_riscv32_tree -fuse-ld=lld 2>&1 | FileCheck -check-prefix=LLD %s
// LLD: {{(error: invalid linker name in argument '-fuse-ld=lld')|(ld.lld)}}
// In the below tests, --rtlib=platform is used so that the driver ignores
@@ -177,6 +179,7 @@
// Check that --rtlib can be used to override the used runtime library
// RUN: %clang %s -### -no-canonical-prefixes \
+// RUN: --gcc-toolchain=%S/Inputs/multilib_riscv_elf_sdk \
// RUN: -target riscv32-unknown-elf --rtlib=libgcc 2>&1 \
// RUN: | FileCheck -check-prefix=C-RV32-RTLIB-LIBGCC-ILP32 %s
// C-RV32-RTLIB-LIBGCC-ILP32: "{{.*}}crt0.o"
@@ -185,6 +188,7 @@
// C-RV32-RTLIB-LIBGCC-ILP32: "{{.*}}crtend.o"
// RUN: %clang %s -### -no-canonical-prefixes \
+// RUN: --gcc-toolchain=%S/Inputs/multilib_riscv_elf_sdk \
// RUN: -target riscv32-unknown-elf --rtlib=compiler-rt 2>&1 \
// RUN: | FileCheck -check-prefix=C-RV32-RTLIB-COMPILERRT-ILP32 %s
// C-RV32-RTLIB-COMPILERRT-ILP32: "{{.*}}crt0.o"
Index: clang/test/Driver/riscv-gnutools.c
===================================================================
--- clang/test/Driver/riscv-gnutools.c
+++ clang/test/Driver/riscv-gnutools.c
@@ -5,15 +5,15 @@
// 32-bit checks
// Check default on riscv32-unknown-elf
-// RUN: %clang -target riscv32-unknown-elf -fno-integrated-as %s -### -c \
+// RUN: %clang -target riscv32-unknown-elf --gcc-toolchain=%S/Inputs/basic_riscv32_tree -fno-integrated-as %s -### -c \
// RUN: 2>&1 | FileCheck -check-prefix=CHECK-RV32IMAC-ILP32 %s
// Check default on riscv32-unknown-linux-gnu
-// RUN: %clang -target riscv32-unknown-linux-gnu -fno-integrated-as %s -### -c \
+// RUN: %clang -target riscv32-unknown-linux-gnu --gcc-toolchain=%S/Inputs/basic_riscv32_tree -fno-integrated-as %s -### -c \
// RUN: 2>&1 | FileCheck -check-prefix=CHECK-RV32IMAFDC-ILP32D %s
// Check default when -march=rv32g specified
-// RUN: %clang -target riscv32 -fno-integrated-as %s -### -c -march=rv32g \
+// RUN: %clang -target riscv32 --gcc-toolchain=%S/Inputs/basic_riscv32_tree -fno-integrated-as %s -### -c -march=rv32g \
// RUN: 2>&1 | FileCheck -check-prefix=CHECK-RV32G-ILP32D %s
// CHECK-RV32IMAC-ILP32: "{{.*}}as{{(.exe)?}}" "-mabi" "ilp32" "-march" "rv32imac"
@@ -24,15 +24,15 @@
// 64-bit checks
// Check default on riscv64-unknown-elf
-// RUN: %clang -target riscv64-unknown-elf -fno-integrated-as %s -### -c \
+// RUN: %clang -target riscv64-unknown-elf --gcc-toolchain=%S/Inputs/basic_riscv64_tree -fno-integrated-as %s -### -c \
// RUN: 2>&1 | FileCheck -check-prefix=CHECK-RV64IMAC-LP64 %s
// Check default on riscv64-unknown-linux-gnu
-// RUN: %clang -target riscv64-unknown-linux-gnu -fno-integrated-as %s -### -c \
+// RUN: %clang -target riscv64-unknown-linux-gnu --gcc-toolchain=%S/Inputs/basic_riscv64_tree -fno-integrated-as %s -### -c \
// RUN: 2>&1 | FileCheck -check-prefix=CHECK-RV64IMAFDC-LP64D %s
// Check default when -march=rv64g specified
-// RUN: %clang -target riscv64 -fno-integrated-as %s -### -c -march=rv64g \
+// RUN: %clang -target riscv64 --gcc-toolchain=%S/Inputs/basic_riscv64_tree -fno-integrated-as %s -### -c -march=rv64g \
// RUN: 2>&1 | FileCheck -check-prefix=CHECK-RV64G-LP64D %s
// CHECK-RV64IMAC-LP64: "{{.*}}as{{(.exe)?}}" "-mabi" "lp64" "-march" "rv64imac"
Index: clang/test/Driver/baremetal.cpp
===================================================================
--- clang/test/Driver/baremetal.cpp
+++ clang/test/Driver/baremetal.cpp
@@ -87,3 +87,129 @@
// RUN: %clang -### -target arm-none-eabi -rtlib=libgcc -v %s 2>&1 \
// RUN: | FileCheck %s --check-prefix=CHECK-RTLIB-GCC
// CHECK-RTLIB-GCC: -lgcc
+
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN: -target riscv64-unknown-elf \
+// RUN: -L some/directory/user/asked/for \
+// RUN: --sysroot=%S/Inputs/basic_riscv64_tree/riscv64-unknown-elf \
+// RUN: | FileCheck --check-prefix=CHECK-RV64 %s
+// CHECK-RV64: "[[PREFIX_DIR:.*]]{{[/\\]+}}{{[^/^\\]+}}{{[/\\]+}}clang{{.*}}" "-cc1" "-triple" "riscv64-unknown-unknown-elf"
+// CHECK-RV64-SAME: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
+// CHECK-RV64-SAME: "-isysroot" "[[SYSROOT:[^"]*]]"
+// CHECK-RV64-SAME: "-internal-isystem" "[[SYSROOT]]{{[/\\]+}}include{{[/\\]+}}c++{{[/\\]+}}v1"
+// CHECk-RV64-SAME: "-internal-isystem" "[[SYSROOT]]{{[/\\]+}}include"
+// CHECK-RV64-SAME: "-x" "c++" "{{.*}}baremetal.cpp"
+// CHECK-RV64-NEXT: "{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}" "{{.*}}.o" "-Bstatic"
+// CHECK-RV64-SAME: "-L[[RESOURCE_DIR:[^"]+]]{{[/\\]+}}lib{{[/\\]+}}baremetal"
+// CHECK-RV64-SAME: "-Lsome{{[/\\]+}}directory{{[/\\]+}}user{{[/\\]+}}asked{{[/\\]+}}for"
+// CHECK-RV64-SAME: "-lc" "-lm" "-lclang_rt.builtins-riscv64"
+// CHECK-RV64-SAME: "-o" "{{.*}}.o"
+
+// RUN: %clangxx -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN: -target riscv64-unknown-elf \
+// RUN: --sysroot=%S/Inputs/baremetal_arm \
+// RUN: | FileCheck --check-prefix=CHECK-RV64-DEFAULTCXX %s
+// CHECK-RV64-DEFAULTCXX: "{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}" "{{.*}}.o" "-Bstatic"
+// CHECK-RV64-DEFAULTCXX-SAME: "-L{{[^"]*}}{{[/\\]+}}lib{{(64)?}}{{[/\\]+}}clang{{[/\\]+}}{{.*}}{{[/\\]+}}lib{{[/\\]+}}baremetal"
+// CHECK-RV64-DEFAULTCXX-SAME: "-lc++" "-lc++abi" "-lunwind"
+// CHECK-RV64-DEFAULTCXX-SAME: "-lc" "-lm" "-lclang_rt.builtins-riscv64"
+// CHECK-RV64-DEFAULTCXX-SAME: "-o" "{{.*}}.o"
+
+// RUN: %clangxx -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN: -target riscv64-unknown-elf \
+// RUN: --sysroot=%S/Inputs/baremetal_arm \
+// RUN: -stdlib=libc++ \
+// RUN: | FileCheck --check-prefix=CHECK-RV64-LIBCXX %s
+// CHECK-RV64-LIBCXX-NOT: "-internal-isystem" "{{[^"]+}}{{[/\\]+}}include{{[/\\]+}}c++{{[/\\]+}}{{[^v].*}}"
+// CHECK-RV64-LIBCXX: "-internal-isystem" "{{[^"]+}}{{[/\\]+}}include{{[/\\]+}}c++{{[/\\]+}}v1"
+// CHECK-RV64-LIBCXX: "{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}" "{{.*}}.o" "-Bstatic"
+// CHECK-RV64-LIBCXX-SAME: "-L{{[^"]*}}{{[/\\]+}}lib{{(64)?}}{{[/\\]+}}clang{{[/\\]+}}{{.*}}{{[/\\]+}}lib{{[/\\]+}}baremetal"
+// CHECK-RV64-LIBCXX-SAME: "-lc++" "-lc++abi" "-lunwind"
+// CHECK-RV64-LIBCXX-SAME: "-lc" "-lm" "-lclang_rt.builtins-riscv64"
+// CHECK-RV64-LIBCXX-SAME: "-o" "{{.*}}.o"
+
+// RUN: %clangxx -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN: -target riscv64-unknown-elf \
+// RUN: --sysroot=%S/Inputs/baremetal_arm \
+// RUN: -stdlib=libstdc++ \
+// RUN: | FileCheck --check-prefix=CHECK-RV64-LIBSTDCXX %s
+// CHECK-RV64-LIBSTDCXX-NOT: "-internal-isystem" "{{[^"]+}}{{[/\\]+}}include{{[/\\]+}}c++{{[/\\]+}}v1"
+// CHECK-RV64-LIBSTDCXX: "-internal-isystem" "{{[^"]+}}{{[/\\]+}}include{{[/\\]+}}c++{{[/\\]+}}6.0.0"
+// CHECK-RV64-LIBSTDCXX: "{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}" "{{.*}}.o" "-Bstatic"
+// CHECK-RV64-LIBSTDCXX-SAME: "-L{{[^"]*}}{{[/\\]+}}lib{{(64)?}}{{[/\\]+}}clang{{[/\\]+}}{{.*}}{{[/\\]+}}lib{{[/\\]+}}baremetal"
+// CHECK-RV64-LIBSTDCXX-SAME: "-lstdc++" "-lsupc++" "-lunwind"
+// CHECK-RV64-LIBSTDCXX-SAME: "-lc" "-lm" "-lclang_rt.builtins-riscv64"
+// CHECK-RV64-LIBSTDCXX-SAME: "-o" "{{.*}}.o"
+
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN: -target riscv32-unknown-elf \
+// RUN: -L some/directory/user/asked/for \
+// RUN: --sysroot=%S/Inputs/basic_riscv32_tree/riscv32-unknown-elf \
+// RUN: | FileCheck --check-prefix=CHECK-RV32 %s
+// CHECK-RV32: "[[PREFIX_DIR:.*]]{{[/\\]+}}{{[^/^\\]+}}{{[/\\]+}}clang{{.*}}" "-cc1" "-triple" "riscv32-unknown-unknown-elf"
+// CHECK-RV32-SAME: "-resource-dir" "[[RESOURCE_DIR:[^"]+]]"
+// CHECK-RV32-SAME: "-isysroot" "[[SYSROOT:[^"]*]]"
+// CHECK-RV32-SAME: "-internal-isystem" "[[SYSROOT]]{{[/\\]+}}include{{[/\\]+}}c++{{[/\\]+}}v1"
+// CHECK-RV32-SAME: "-internal-isystem" "[[SYSROOT]]{{[/\\]+}}include"
+// CHECK-RV32-SAME: "-x" "c++" "{{.*}}baremetal.cpp"
+// CHECK-RV32-NEXT: "{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}" "{{.*}}.o" "-Bstatic"
+// CHECK-RV32-SAME: "-L[[RESOURCE_DIR:[^"]+]]{{[/\\]+}}lib{{[/\\]+}}baremetal"
+// CHECK-RV32-SAME: "-Lsome{{[/\\]+}}directory{{[/\\]+}}user{{[/\\]+}}asked{{[/\\]+}}for"
+// CHECK-RV32-SAME: "-lc" "-lm" "-lclang_rt.builtins-riscv32"
+// CHECK-RV32-SAME: "-o" "{{.*}}.o"
+
+// RUN: %clangxx -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN: -target riscv32-unknown-elf \
+// RUN: --sysroot=%S/Inputs/baremetal_arm \
+// RUN: | FileCheck --check-prefix=CHECK-RV32-DEFAULTCXX %s
+// CHECK-RV32-DEFAULTCXX: "{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}" "{{.*}}.o" "-Bstatic"
+// CHECK-RV32-DEFAULTCXX-SAME: "-L{{[^"]*}}{{[/\\]+}}lib{{(64)?}}{{[/\\]+}}clang{{[/\\]+}}{{.*}}{{[/\\]+}}lib{{[/\\]+}}baremetal"
+// CHECK-RV32-DEFAULTCXX-SAME: "-lc++" "-lc++abi" "-lunwind"
+// CHECK-RV32-DEFAULTCXX-SAME: "-lc" "-lm" "-lclang_rt.builtins-riscv32"
+// CHECK-RV32-DEFAULTCXX-SAME: "-o" "{{.*}}.o"
+
+// RUN: %clangxx -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN: -target riscv32-unknown-elf \
+// RUN: --sysroot=%S/Inputs/baremetal_arm \
+// RUN: -stdlib=libc++ \
+// RUN: | FileCheck --check-prefix=CHECK-RV32-LIBCXX %s
+// CHECK-RV32-LIBCXX-NOT: "-internal-isystem" "{{[^"]+}}{{[/\\]+}}include{{[/\\]+}}c++{{[/\\]+}}{{[^v].*}}"
+// CHECK-RV32-LIBCXX: "-internal-isystem" "{{[^"]+}}{{[/\\]+}}include{{[/\\]+}}c++{{[/\\]+}}v1"
+// CHECK-RV32-LIBCXX: "{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}" "{{.*}}.o" "-Bstatic"
+// CHECK-RV32-LIBCXX-SAME: "-L{{[^"]*}}{{[/\\]+}}lib{{(64)?}}{{[/\\]+}}clang{{[/\\]+}}{{.*}}{{[/\\]+}}lib{{[/\\]+}}baremetal"
+// CHECK-RV32-LIBCXX-SAME: "-lc++" "-lc++abi" "-lunwind"
+// CHECK-RV32-LIBCXX-SAME: "-lc" "-lm" "-lclang_rt.builtins-riscv32"
+// CHECK-RV32-LIBCXX-SAME: "-o" "{{.*}}.o"
+
+// RUN: %clangxx -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN: -target riscv32-unknown-elf \
+// RUN: --sysroot=%S/Inputs/baremetal_arm \
+// RUN: -stdlib=libstdc++ \
+// RUN: | FileCheck --check-prefix=CHECK-RV32-LIBSTDCXX %s
+// CHECK-RV32-LIBSTDCXX-NOT: "-internal-isystem" "{{[^"]+}}{{[/\\]+}}include{{[/\\]+}}c++{{[/\\]+}}v1"
+// CHECK-RV32-LIBSTDCXX: "-internal-isystem" "{{[^"]+}}{{[/\\]+}}include{{[/\\]+}}c++{{[/\\]+}}6.0.0"
+// CHECK-RV32-LIBSTDCXX: "{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}" "{{.*}}.o" "-Bstatic"
+// CHECK-RV32-LIBSTDCXX-SAME: "-L{{[^"]*}}{{[/\\]+}}lib{{(64)?}}{{[/\\]+}}clang{{[/\\]+}}{{.*}}{{[/\\]+}}lib{{[/\\]+}}baremetal"
+// CHECK-RV32-LIBSTDCXX-SAME: "-lstdc++" "-lsupc++" "-lunwind"
+// CHECK-RV32-LIBSTDCXX-SAME: "-lc" "-lm" "-lclang_rt.builtins-riscv32"
+// CHECK-RV32-LIBSTDCXX-SAME: "-o" "{{.*}}.o"
+
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN: -target riscv64-unknown-elf \
+// RUN: -nostdlibinc -nobuiltininc \
+// RUN: --sysroot=%S/Inputs/baremetal_arm \
+// RUN: | FileCheck --check-prefix=CHECK-RV64-LIBINC %s
+// RUN: %clang -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN: -target riscv64-unknown-elf \
+// RUN: -nostdinc \
+// RUN: --sysroot=%S/Inputs/baremetal_arm \
+// RUN: | FileCheck --check-prefix=CHECK-RV64-LIBINC %s
+// CHECK-RV64-LIBINC-NOT: "-internal-isystem"
+
+// RUN: %clangxx -no-canonical-prefixes %s -### -o %t.o 2>&1 \
+// RUN: -target riscv64-unknown-elf \
+// RUN: --sysroot=%S/Inputs/baremetal_arm \
+// RUN: -nodefaultlibs \
+// RUN: | FileCheck --check-prefix=CHECK-RV64-NDL %s
+// CHECK-RV64-NDL: "{{[^"]*}}ld{{(\.(lld|bfd|gold))?}}{{(\.exe)?}}" "{{.*}}.o" "-Bstatic"
+// CHECK-RV64-NDL-SAME: "-L{{[^"]*}}{{[/\\]+}}lib{{(64)?}}{{[/\\]+}}clang{{[/\\]+}}{{.*}}{{[/\\]+}}lib{{[/\\]+}}baremetal" "-o" "{{.*}}.o"
Index: clang/lib/Driver/ToolChains/BareMetal.cpp
===================================================================
--- clang/lib/Driver/ToolChains/BareMetal.cpp
+++ clang/lib/Driver/ToolChains/BareMetal.cpp
@@ -54,8 +54,22 @@
return true;
}
+static bool isRISCVBareMetal(const llvm::Triple &Triple) {
+ if (Triple.getArch() != llvm::Triple::riscv32 &&
+ Triple.getArch() != llvm::Triple::riscv64)
+ return false;
+
+ if (Triple.getVendor() != llvm::Triple::UnknownVendor)
+ return false;
+
+ if (Triple.getOS() != llvm::Triple::UnknownOS)
+ return false;
+
+ return Triple.getEnvironmentName() == "elf";
+}
+
bool BareMetal::handlesTarget(const llvm::Triple &Triple) {
- return isARMBareMetal(Triple);
+ return isARMBareMetal(Triple) || isRISCVBareMetal(Triple);
}
Tool *BareMetal::buildLinker() const {
Index: clang/lib/Driver/Driver.cpp
===================================================================
--- clang/lib/Driver/Driver.cpp
+++ clang/lib/Driver/Driver.cpp
@@ -5147,7 +5147,12 @@
break;
case llvm::Triple::riscv32:
case llvm::Triple::riscv64:
- TC = std::make_unique<toolchains::RISCVToolChain>(*this, Target, Args);
+ if (!Args.getLastArg(clang::driver::options::OPT_gcc_toolchain) &&
+ toolchains::BareMetal::handlesTarget(Target))
+ TC = std::make_unique<toolchains::BareMetal>(*this, Target, Args);
+ else
+ TC =
+ std::make_unique<toolchains::RISCVToolChain>(*this, Target, Args);
break;
case llvm::Triple::ve:
TC = std::make_unique<toolchains::VEToolChain>(*this, Target, Args);
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