Implement mcount profiling, enabled via -pg.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125282 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 19 insertions, 0 deletions

diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 6888117725..2af28d663c 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -210,6 +210,25 @@ public:
   FreeBSDTargetInfo(const std::string &triple)
     : OSTargetInfo<Target>(triple) {
       this->UserLabelPrefix = "";
+
+      llvm::Triple Triple(triple);
+      switch (Triple.getArch()) {
+        default:
+        case llvm::Triple::x86:
+        case llvm::Triple::x86_64:
+          this->MCountName = ".mcount";
+          break;
+        case llvm::Triple::mips:
+        case llvm::Triple::mipsel:
+        case llvm::Triple::ppc:
+        case llvm::Triple::ppc64:
+          this->MCountName = "_mcount";
+          break;
+        case llvm::Triple::arm:
+          this->MCountName = "__mcount";
+          break;
+      }
+
     }
 };