diff --git a/lib/Target/PowerPC/PowerPCTargetMachine.cpp b/lib/Target/PowerPC/PowerPCTargetMachine.cpp
index 9a9a020..bf57b15 100644
--- a/lib/Target/PowerPC/PowerPCTargetMachine.cpp
+++ b/lib/Target/PowerPC/PowerPCTargetMachine.cpp
@@ -32,7 +32,7 @@
 PowerPCTargetMachine::PowerPCTargetMachine(const Module &M,
                                            IntrinsicLowering *IL)
   : TargetMachine("PowerPC", IL, true, 4, 4, 4, 4, 4),
-    FrameInfo(TargetFrameInfo::StackGrowsDown, 8, 4), JITInfo(*this) {
+    FrameInfo(TargetFrameInfo::StackGrowsDown, 8, -4), JITInfo(*this) {
 }
 
 /// addPassesToEmitAssembly - Add passes to the specified pass manager
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp
index a1884a6..97d82e0 100644
--- a/lib/Target/X86/X86TargetMachine.cpp
+++ b/lib/Target/X86/X86TargetMachine.cpp
@@ -50,7 +50,7 @@
 ///
 X86TargetMachine::X86TargetMachine(const Module &M, IntrinsicLowering *IL)
   : TargetMachine("X86", IL, true, 4, 4, 4, 4, 4),
-    FrameInfo(TargetFrameInfo::StackGrowsDown, 8/*16 for SSE*/, 4),
+    FrameInfo(TargetFrameInfo::StackGrowsDown, 8/*16 for SSE*/, -4),
     JITInfo(*this) {
 }