StringRef getHostCPUNameForPowerPC(StringRef ProcCpuinfoContent);
StringRef getHostCPUNameForARM(StringRef ProcCpuinfoContent);
StringRef getHostCPUNameForS390x(StringRef ProcCpuinfoContent);
+ StringRef getHostCPUNameForRISCV(StringRef ProcCpuinfoContent);
StringRef getHostCPUNameForBPF();
/// Helper functions to extract CPU details from CPUID on x86.
return "generic";
}
+StringRef sys::detail::getHostCPUNameForRISCV(StringRef ProcCpuinfoContent) {
+ // There are 24 lines in /proc/cpuinfo
+ SmallVector<StringRef> Lines;
+ ProcCpuinfoContent.split(Lines, "\n");
+
+ // Look for uarch line to determine cpu name
+ StringRef UArch;
+ for (unsigned I = 0, E = Lines.size(); I != E; ++I) {
+ if (Lines[I].startswith("uarch")) {
+ UArch = Lines[I].substr(5).ltrim("\t :");
+ break;
+ }
+ }
+
+ return StringSwitch<const char *>(UArch)
+ .Case("sifive,u74-mc", "sifive-u74")
+ .Case("sifive,bullet0", "sifive-u74")
+ .Default("generic");
+}
+
StringRef sys::detail::getHostCPUNameForBPF() {
#if !defined(__linux__) || !defined(__x86_64__)
return "generic";
}
#elif defined(__riscv)
StringRef sys::getHostCPUName() {
+#if defined(__linux__)
+ std::unique_ptr<llvm::MemoryBuffer> P = getProcCpuinfoContent();
+ StringRef Content = P ? P->getBuffer() : "";
+ return detail::getHostCPUNameForRISCV(Content);
+#else
#if __riscv_xlen == 64
return "generic-rv64";
#elif __riscv_xlen == 32
#else
#error "Unhandled value of __riscv_xlen"
#endif
+#endif
}
#else
StringRef sys::getHostCPUName() { return "generic"; }
}
}
+TEST(getLinuxHostCPUName, RISCV) {
+ const StringRef SifiveU74MCProcCPUInfo = R"(
+processor : 0
+hart : 2
+isa : rv64imafdc
+mmu : sv39
+uarch : sifive,u74-mc
+)";
+ EXPECT_EQ(sys::detail::getHostCPUNameForRISCV(SifiveU74MCProcCPUInfo),
+ "sifive-u74");
+ EXPECT_EQ(
+ sys::detail::getHostCPUNameForRISCV("uarch : sifive,bullet0\n"),
+ "sifive-u74");
+}
+
static bool runAndGetCommandOutput(
const char *ExePath, ArrayRef<llvm::StringRef> argv,
std::unique_ptr<char[]> &Buffer, off_t &Size) {