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---
clang/lib/Basic/Targets.cpp | 27 ---------------------------
1 file changed, 27 deletions(-)
--- a/clang/lib/Basic/Targets.cpp
+++ b/clang/lib/Basic/Targets.cpp
@@ -4414,33 +4414,6 @@ protected:
Builder.defineMacro("__ELF__");
}
- static bool shouldUseInlineAtomic(const llvm::Triple &T) {
- // On linux, binaries targeting old cpus call functions in libgcc to
- // perform atomic operations. The implementation in libgcc then calls into
- // the kernel which on armv6 and newer uses ldrex and strex. The net result
- // is that if we assume the kernel is at least as recent as the hardware,
- // it is safe to use atomic instructions on armv6 and newer.
- if (T.getOS() != llvm::Triple::Linux)
- return false;
- StringRef ArchName = T.getArchName();
- if (T.getArch() == llvm::Triple::arm) {
- if (!ArchName.startswith("armv"))
- return false;
- StringRef VersionStr = ArchName.substr(4);
- unsigned Version;
- if (VersionStr.getAsInteger(10, Version))
- return false;
- return Version >= 6;
- }
- assert(T.getArch() == llvm::Triple::thumb);
- if (!ArchName.startswith("thumbv"))
- return false;
- StringRef VersionStr = ArchName.substr(6);
- unsigned Version;
- if (VersionStr.getAsInteger(10, Version))
- return false;
- return Version >= 7;
- }
public:
RTEMSTargetInfo(const llvm::Triple &Triple, const TargetOptions &Opts)
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