commit bb7ac52e0288ff88cacd2577137cf64955a643c6
author Daniel Dunbar <daniel@zuster.org> Thu Jul 01 01:31:45 2010 +0000
committer Daniel Dunbar <daniel@zuster.org> Thu Jul 01 01:31:45 2010 +0000
tree 5368fdc28491bf6966f7ac1e806a7cf55ebf0584
parent 54b8b8c1a74a78125510a23dc0d02f864c7d0380

Driver/IRgen: Add support for -momit-leaf-frame-pointer.

llvm-svn: 107367

clang/lib/CodeGen/BackendUtil.cpp

diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index 793a4da..69efe43 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -160,7 +160,20 @@
   // FIXME: Expose these capabilities via actual APIs!!!! Aside from just
   // being gross, this is also totally broken if we ever care about
   // concurrency.
-  llvm::NoFramePointerElim = CodeGenOpts.DisableFPElim;
+
+  // Set frame pointer elimination mode.
+  if (!CodeGenOpts.DisableFPElim) {
+    llvm::NoFramePointerElim = false;
+    llvm::NoFramePointerElimNonLeaf = false;
+  } else if (CodeGenOpts.OmitLeafFramePointer) {
+    llvm::NoFramePointerElim = false;
+    llvm::NoFramePointerElimNonLeaf = true;
+  } else {
+    llvm::NoFramePointerElim = true;
+    llvm::NoFramePointerElimNonLeaf = true;
+  }
+
+  // Set float ABI type.
   if (CodeGenOpts.FloatABI == "soft")
     llvm::FloatABIType = llvm::FloatABI::Soft;
   else if (CodeGenOpts.FloatABI == "hard")
@@ -169,6 +182,7 @@
     assert(CodeGenOpts.FloatABI.empty() && "Invalid float abi!");
     llvm::FloatABIType = llvm::FloatABI::Default;
   }
+
   NoZerosInBSS = CodeGenOpts.NoZeroInitializedInBSS;
   llvm::UseSoftFloat = CodeGenOpts.SoftFloat;
   UnwindTablesMandatory = CodeGenOpts.UnwindTables;