Allow case-insensitive values for -mcpu for ARM

GCC allows case-insensitive values for -mcpu, -march and -mtune options.
This patch implements the same behaviour for the -mcpu option.

llvm-svn: 239059

1 files changed, 5 insertions, 5 deletions

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 3218d117b58..43536cbb8dc 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -767,7 +767,7 @@ static void getARMTargetFeatures(const Driver &D, const llvm::Triple &Triple,
   // the only function we have to check if a cpu is valid is
   // getLLVMArchSuffixForARM which also needs an architecture.
   if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
-    StringRef CPU = arm::getARMTargetCPU(Args, Triple);
+    std::string CPU = arm::getARMTargetCPU(Args, Triple);
     StringRef Arch = arm::getARMArch(Args, Triple);
     if (strcmp(arm::getLLVMArchSuffixForARM(CPU, Arch), "") == 0)
       D.Diag(diag::err_drv_clang_unsupported) << A->getAsString(Args);
@@ -5748,12 +5748,12 @@ const char *arm::getARMCPUForMArch(const ArgList &Args,
 }
 
 /// getARMTargetCPU - Get the (LLVM) name of the ARM cpu we are targeting.
-StringRef arm::getARMTargetCPU(const ArgList &Args,
+std::string arm::getARMTargetCPU(const ArgList &Args,
                                const llvm::Triple &Triple) {
   // FIXME: Warn on inconsistent use of -mcpu and -march.
   // If we have -mcpu=, use that.
   if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
-    StringRef MCPU = A->getValue();
+    std::string MCPU = StringRef(A->getValue()).lower();
     // Handle -mcpu=native.
     if (MCPU == "native")
       return llvm::sys::getHostCPUName();
@@ -7255,7 +7255,7 @@ void netbsd::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
   case llvm::Triple::armeb:
   case llvm::Triple::thumb:
   case llvm::Triple::thumbeb: {
-    std::string MArch(arm::getARMTargetCPU(Args, getToolChain().getTriple()));
+    std::string MArch = arm::getARMTargetCPU(Args, getToolChain().getTriple());
     CmdArgs.push_back(Args.MakeArgString("-mcpu=" + MArch));
     break;
   }
@@ -7602,7 +7602,7 @@ void gnutools::Assemble::ConstructJob(Compilation &C, const JobAction &JA,
     // march from being picked in the absence of a cpu flag.
     Arg *A;
     if ((A = Args.getLastArg(options::OPT_mcpu_EQ)) &&
-      StringRef(A->getValue()) == "krait")
+      StringRef(A->getValue()).lower() == "krait")
         CmdArgs.push_back("-march=armv7-a");
     else
       Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);