commit d964cc22d1432ae41b19fea1f543cf8b76c37323
author Jacques Pienaar <jpienaar@google.com> Mon Mar 28 21:02:54 2016 +0000
committer Jacques Pienaar <jpienaar@google.com> Mon Mar 28 21:02:54 2016 +0000
tree 55c19ff3b0a962fb22a4d178c7be9c78c52bb6bf
parent 83c3bd3e59ffeda483f4fa16a18b4050df8be0f7

[lanai] Add Lanai backend to clang driver.

Changes to clang to add Lanai backend. Adds a new target, ABI and toolchain.

General Lanai backend discussion on llvm-dev thread "[RFC] Lanai backend" (http://lists.llvm.org/pipermail/llvm-dev/2016-February/095118.html).

Differential Revision: http://reviews.llvm.org/D17002

llvm-svn: 264655

clang/lib/Driver/Tools.cpp

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index e725e5a..118e1af 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -1619,6 +1619,13 @@
   return "";
 }
 
+static std::string getLanaiTargetCPU(const ArgList &Args) {
+  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
+    return A->getValue();
+  }
+  return "";
+}
+
 void Clang::AddSparcTargetArgs(const ArgList &Args,
                                ArgStringList &CmdArgs) const {
   const Driver &D = getToolChain().getDriver();
@@ -1836,6 +1843,9 @@
     return "hexagon" +
            toolchains::HexagonToolChain::GetTargetCPUVersion(Args).str();
 
+  case llvm::Triple::lanai:
+    return getLanaiTargetCPU(Args);
+
   case llvm::Triple::systemz:
     return getSystemZTargetCPU(Args);
 
@@ -2145,6 +2155,29 @@
   CmdArgs.push_back("-machine-sink-split=0");
 }
 
+void Clang::AddLanaiTargetArgs(const ArgList &Args,
+                               ArgStringList &CmdArgs) const {
+  if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
+    StringRef CPUName = A->getValue();
+
+    CmdArgs.push_back("-target-cpu");
+    CmdArgs.push_back(Args.MakeArgString(CPUName));
+  }
+  if (Arg *A = Args.getLastArg(options::OPT_mregparm_EQ)) {
+    StringRef Value = A->getValue();
+    // Only support mregparm=4 to support old usage. Report error for all other
+    // cases.
+    int Mregparm;
+    if (Value.getAsInteger(10, Mregparm)) {
+      if (Mregparm != 4) {
+        getToolChain().getDriver().Diag(
+            diag::err_drv_unsupported_option_argument)
+            << A->getOption().getName() << Value;
+      }
+    }
+  }
+}
+
 void Clang::AddWebAssemblyTargetArgs(const ArgList &Args,
                                      ArgStringList &CmdArgs) const {
   // Default to "hidden" visibility.
@@ -4176,6 +4209,10 @@
     AddX86TargetArgs(Args, CmdArgs);
     break;
 
+  case llvm::Triple::lanai:
+    AddLanaiTargetArgs(Args, CmdArgs);
+    break;
+
   case llvm::Triple::hexagon:
     AddHexagonTargetArgs(Args, CmdArgs);
     break;