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[clang][Driver] Prefer non-Linux emulations for baremetal Arm/AArch64 targets #149235

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[clang][Driver] Prefer non-Linux emulations for baremetal Arm/AArch64 targets #149235

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15 changes: 15 additions & 0 deletions clang/lib/Driver/ToolChains/Arch/AArch64.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -467,3 +467,18 @@ void aarch64::setPAuthABIInTriple(const Driver &D, const ArgList &Args,
break;
}
}

/// Is the triple {aarch64.aarch64_be}-none-elf?
bool aarch64::isAArch64BareMetal(const llvm::Triple &Triple) {
if (Triple.getArch() != llvm::Triple::aarch64 &&
Triple.getArch() != llvm::Triple::aarch64_be)
return false;

if (Triple.getVendor() != llvm::Triple::UnknownVendor)
return false;

if (Triple.getOS() != llvm::Triple::UnknownOS)
return false;

return Triple.getEnvironmentName() == "elf";
}
1 change: 1 addition & 0 deletions clang/lib/Driver/ToolChains/Arch/AArch64.h
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@ std::string getAArch64TargetCPU(const llvm::opt::ArgList &Args,

void setPAuthABIInTriple(const Driver &D, const llvm::opt::ArgList &Args,
llvm::Triple &triple);
bool isAArch64BareMetal(const llvm::Triple &Triple);

} // end namespace aarch64
} // end namespace target
Expand Down
21 changes: 4 additions & 17 deletions clang/lib/Driver/ToolChains/BareMetal.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@
#include "clang/Driver/CommonArgs.h"
#include "clang/Driver/InputInfo.h"

#include "Arch/AArch64.h"
#include "Arch/ARM.h"
#include "Arch/RISCV.h"
#include "clang/Driver/Compilation.h"
Expand All @@ -31,21 +32,6 @@ using namespace clang::driver;
using namespace clang::driver::tools;
using namespace clang::driver::toolchains;

/// Is the triple {aarch64.aarch64_be}-none-elf?
static bool isAArch64BareMetal(const llvm::Triple &Triple) {
if (Triple.getArch() != llvm::Triple::aarch64 &&
Triple.getArch() != llvm::Triple::aarch64_be)
return false;

if (Triple.getVendor() != llvm::Triple::UnknownVendor)
return false;

if (Triple.getOS() != llvm::Triple::UnknownOS)
return false;

return Triple.getEnvironmentName() == "elf";
}

static bool isRISCVBareMetal(const llvm::Triple &Triple) {
if (!Triple.isRISCV())
return false;
Expand Down Expand Up @@ -363,8 +349,9 @@ void BareMetal::findMultilibs(const Driver &D, const llvm::Triple &Triple,
}

bool BareMetal::handlesTarget(const llvm::Triple &Triple) {
return arm::isARMEABIBareMetal(Triple) || isAArch64BareMetal(Triple) ||
isRISCVBareMetal(Triple) || isPPCBareMetal(Triple);
return arm::isARMEABIBareMetal(Triple) ||
aarch64::isAArch64BareMetal(Triple) || isRISCVBareMetal(Triple) ||
isPPCBareMetal(Triple);
}

Tool *BareMetal::buildLinker() const {
Expand Down
13 changes: 10 additions & 3 deletions clang/lib/Driver/ToolChains/CommonArgs.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -547,15 +547,22 @@ const char *tools::getLDMOption(const llvm::Triple &T, const ArgList &Args) {
case llvm::Triple::aarch64:
if (T.isOSManagarm())
return "aarch64managarm";
else if (aarch64::isAArch64BareMetal(T))
return "aarch64elf";
return "aarch64linux";
case llvm::Triple::aarch64_be:
if (aarch64::isAArch64BareMetal(T))
return "aarch64elfb";
return "aarch64linuxb";
case llvm::Triple::arm:
case llvm::Triple::thumb:
case llvm::Triple::armeb:
case llvm::Triple::thumbeb:
return tools::arm::isARMBigEndian(T, Args) ? "armelfb_linux_eabi"
: "armelf_linux_eabi";
case llvm::Triple::thumbeb: {
bool IsBigEndian = tools::arm::isARMBigEndian(T, Args);
if (arm::isARMEABIBareMetal(T))
return IsBigEndian ? "armelfb" : "armelf";
return IsBigEndian ? "armelfb_linux_eabi" : "armelf_linux_eabi";
}
case llvm::Triple::m68k:
return "m68kelf";
case llvm::Triple::ppc:
Expand Down
14 changes: 7 additions & 7 deletions clang/test/Driver/aarch64-toolchain.c
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@
// LLD-AARCH64-BAREMETAL: "-isysroot" "{{.*}}Inputs/basic_aarch64_gcc_tree/aarch64-none-elf"
// LLD-AARCH64-BAREMETAL: "-internal-isystem" "{{.*}}Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/include"
// LLD-AARCH64-BAREMETAL: "{{.*}}/Inputs/lld/ld.lld"
// LLD-AARCH64-BAREMETAL: "-Bstatic" "-m" "aarch64linux" "-EL"
// LLD-AARCH64-BAREMETAL: "-Bstatic" "-m" "aarch64elf" "-EL"
// LLD-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/lib/crt0.o"
// LLD-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtbegin.o"
// LLD-AARCH64-BAREMETAL: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1"
Expand All @@ -30,7 +30,7 @@
// C-AARCH64-BAREMETAL: "-internal-isystem" "{{.*}}Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/include"
// C-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../bin/aarch64-none-elf-ld"
// C-AARCH64-BAREMETAL: "--sysroot={{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf"
// C-AARCH64-BAREMETAL: "-Bstatic" "-m" "aarch64linux" "-EL"
// C-AARCH64-BAREMETAL: "-Bstatic" "-m" "aarch64elf" "-EL"
// C-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/lib/crt0.o"
// C-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtbegin.o"
// C-AARCH64-BAREMETAL: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1"
Expand All @@ -47,7 +47,7 @@
// C-AARCH64-BAREMETAL-NOSYSROOT: "-cc1" "-triple" "aarch64-unknown-none-elf"
// C-AARCH64-BAREMETAL-NOSYSROOT: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/include"
// C-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../bin/aarch64-none-elf-ld"
// C-AARCH64-BAREMETAL-NOSYSROOT: "-Bstatic" "-m" "aarch64linux" "-EL"
// C-AARCH64-BAREMETAL-NOSYSROOT: "-Bstatic" "-m" "aarch64elf" "-EL"
// C-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/lib/crt0.o"
// C-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtbegin.o"
// C-AARCH64-BAREMETAL-NOSYSROOT: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1"
Expand All @@ -67,7 +67,7 @@
// CXX-AARCH64-BAREMETAL: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/include"
// CXX-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../bin/aarch64-none-elf-ld"
// CXX-AARCH64-BAREMETAL: "--sysroot={{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf"
// CXX-AARCH64-BAREMETAL: "-Bstatic" "-m" "aarch64linux" "-EL"
// CXX-AARCH64-BAREMETAL: "-Bstatic" "-m" "aarch64elf" "-EL"
// CXX-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/lib/crt0.o"
// CXX-AARCH64-BAREMETAL: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtbegin.o"
// CXX-AARCH64-BAREMETAL: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1"
Expand All @@ -86,7 +86,7 @@
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/include/c++/8.2.1"
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/include"
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../bin/aarch64-none-elf-ld"
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "-Bstatic" "-m" "aarch64linux" "-EL"
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "-Bstatic" "-m" "aarch64elf" "-EL"
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/lib/crt0.o"
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtbegin.o"
// CXX-AARCH64-BAREMETAL-NOSYSROOT: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1"
Expand All @@ -105,7 +105,7 @@
// CXX-AARCH64-BAREMETAL-LIBCXX: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/include"
// CXX-AARCH64-BAREMETAL-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../bin/aarch64-none-elf-ld"
// CXX-AARCH64-BAREMETAL-LIBCXX: "--sysroot={{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf"
// CXX-AARCH64-BAREMETAL-LIBCXX: "-Bstatic" "-m" "aarch64linux" "-EL"
// CXX-AARCH64-BAREMETAL-LIBCXX: "-Bstatic" "-m" "aarch64elf" "-EL"
// CXX-AARCH64-BAREMETAL-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/aarch64-none-elf/lib/crt0.o"
// CXX-AARCH64-BAREMETAL-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtbegin.o"
// CXX-AARCH64-BAREMETAL-LIBCXX: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1"
Expand All @@ -122,7 +122,7 @@
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/include/c++/v1"
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "-internal-isystem" "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/include"
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../bin/aarch64-none-elf-ld"
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "-Bstatic" "-m" "aarch64linux" "-EL"
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "-Bstatic" "-m" "aarch64elf" "-EL"
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/../../../../aarch64-none-elf/lib/crt0.o"
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1/crtbegin.o"
// CXX-AARCH64-BAREMETAL-NOSYSROOT-LIBCXX: "-L{{.*}}/Inputs/basic_aarch64_gcc_tree/lib/gcc/aarch64-none-elf/8.2.1"
Expand Down
14 changes: 7 additions & 7 deletions clang/test/Driver/arm-toolchain.c
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@
// LLD-ARM-BAREMETAL: "-isysroot" "{{.*}}Inputs/basic_arm_gcc_tree/armv6m-none-eabi"
// LLD-ARM-BAREMETAL: "-internal-isystem" "{{.*}}Inputs/basic_arm_gcc_tree/armv6m-none-eabi/include"
// LLD-ARM-BAREMETAL: "{{.*}}/Inputs/lld/ld.lld"
// LLD-ARM-BAREMETAL: "-Bstatic" "-m" "armelf_linux_eabi" "-EL"
// LLD-ARM-BAREMETAL: "-Bstatic" "-m" "armelf" "-EL"
// LLD-ARM-BAREMETAL: "{{.*}}/Inputs/basic_arm_gcc_tree/armv6m-none-eabi/lib/crt0.o"
// LLD-ARM-BAREMETAL: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/crtbegin.o"
// LLD-ARM-BAREMETAL: "-L{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1"
Expand All @@ -29,7 +29,7 @@
// C-ARM-BAREMETAL: "-internal-isystem" "{{.*}}Inputs/basic_arm_gcc_tree/armv6m-none-eabi/include"
// C-ARM-BAREMETAL: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../bin/armv6m-none-eabi-ld"
// C-ARM-BAREMETAL: "--sysroot={{.*}}/Inputs/basic_arm_gcc_tree/armv6m-none-eabi"
// C-ARM-BAREMETAL: "-Bstatic" "-m" "armelf_linux_eabi" "-EL"
// C-ARM-BAREMETAL: "-Bstatic" "-m" "armelf" "-EL"
// C-ARM-BAREMETAL: "{{.*}}/Inputs/basic_arm_gcc_tree/armv6m-none-eabi/lib/crt0.o"
// C-ARM-BAREMETAL: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/crtbegin.o"
// C-ARM-BAREMETAL: "-L{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1"
Expand All @@ -46,7 +46,7 @@
// C-ARM-BAREMETAL-NOSYSROOT: "-cc1" "-triple" "thumbv6m-unknown-none-eabi"
// C-ARM-BAREMETAL-NOSYSROOT: "-internal-isystem" "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../armv6m-none-eabi/include"
// C-ARM-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../bin/armv6m-none-eabi-ld"
// C-ARM-BAREMETAL-NOSYSROOT: "-Bstatic" "-m" "armelf_linux_eabi" "-EL"
// C-ARM-BAREMETAL-NOSYSROOT: "-Bstatic" "-m" "armelf" "-EL"
// C-ARM-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../armv6m-none-eabi/lib/crt0.o"
// C-ARM-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/crtbegin.o"
// C-ARM-BAREMETAL-NOSYSROOT: "-L{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1"
Expand All @@ -67,7 +67,7 @@
// CXX-ARM-BAREMETAL: "-internal-isystem" "{{.*}}/Inputs/basic_arm_gcc_tree/armv6m-none-eabi/include"
// CXX-ARM-BAREMETAL: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../bin/armv6m-none-eabi-ld"
// CXX-ARM-BAREMETAL: "--sysroot={{.*}}/Inputs/basic_arm_gcc_tree/armv6m-none-eabi"
// CXX-ARM-BAREMETAL: "-Bstatic" "-m" "armelf_linux_eabi" "-EL"
// CXX-ARM-BAREMETAL: "-Bstatic" "-m" "armelf" "-EL"
// CXX-ARM-BAREMETAL: "{{.*}}/Inputs/basic_arm_gcc_tree/armv6m-none-eabi/lib/crt0.o"
// CXX-ARM-BAREMETAL: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/crtbegin.o"
// CXX-ARM-BAREMETAL: "-L{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1"
Expand All @@ -87,7 +87,7 @@
// CXX-ARM-BAREMETAL-NOSYSROOT: "-internal-isystem" "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../armv6m-none-eabi/include/c++/8.2.1"
// CXX-ARM-BAREMETAL-NOSYSROOT: "-internal-isystem" "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../armv6m-none-eabi/include"
// CXX-ARM-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../bin/armv6m-none-eabi-ld"
// CXX-ARM-BAREMETAL-NOSYSROOT: "-Bstatic" "-m" "armelf_linux_eabi" "-EL"
// CXX-ARM-BAREMETAL-NOSYSROOT: "-Bstatic" "-m" "armelf" "-EL"
// CXX-ARM-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../armv6m-none-eabi/lib/crt0.o"
// CXX-ARM-BAREMETAL-NOSYSROOT: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/crtbegin.o"
// CXX-ARM-BAREMETAL-NOSYSROOT: "-L{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1"
Expand All @@ -106,7 +106,7 @@
// CXX-ARM-BAREMETAL-LIBCXX: "-internal-isystem" "{{.*}}/Inputs/basic_arm_gcc_tree/armv6m-none-eabi/include"
// CXX-ARM-BAREMETAL-LIBCXX: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../bin/armv6m-none-eabi-ld"
// CXX-ARM-BAREMETAL-LIBCXX: "--sysroot={{.*}}/Inputs/basic_arm_gcc_tree/armv6m-none-eabi"
// CXX-ARM-BAREMETAL-LIBCXX: "-Bstatic" "-m" "armelf_linux_eabi" "-EL"
// CXX-ARM-BAREMETAL-LIBCXX: "-Bstatic" "-m" "armelf" "-EL"
// CXX-ARM-BAREMETAL-LIBCXX: "{{.*}}/Inputs/basic_arm_gcc_tree/armv6m-none-eabi/lib/crt0.o"
// CXX-ARM-BAREMETAL-LIBCXX: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/crtbegin.o"
// CXX-ARM-BAREMETAL-LIBCXX: "-L{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1"
Expand All @@ -123,7 +123,7 @@
// CXX-ARM-BAREMETAL-NOSYSROOT-LIBCXX: "-internal-isystem" "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../armv6m-none-eabi/include/c++/v1"
// CXX-ARM-BAREMETAL-NOSYSROOT-LIBCXX: "-internal-isystem" "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../armv6m-none-eabi/include"
// CXX-ARM-BAREMETAL-NOSYSROOT-LIBCXX: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../bin/armv6m-none-eabi-ld"
// CXX-ARM-BAREMETAL-NOSYSROOT-LIBCXX: "-Bstatic" "-m" "armelf_linux_eabi" "-EL"
// CXX-ARM-BAREMETAL-NOSYSROOT-LIBCXX: "-Bstatic" "-m" "armelf" "-EL"
// CXX-ARM-BAREMETAL-NOSYSROOT-LIBCXX: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/../../../../armv6m-none-eabi/lib/crt0.o"
// CXX-ARM-BAREMETAL-NOSYSROOT-LIBCXX: "{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1/crtbegin.o"
// CXX-ARM-BAREMETAL-NOSYSROOT-LIBCXX: "-L{{.*}}/Inputs/basic_arm_gcc_tree/lib/gcc/armv6m-none-eabi/8.2.1"
Expand Down
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