Keep the stack frame aligned.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5081 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocSimple.cpp b/lib/CodeGen/RegAllocSimple.cpp
index 9ed6ad9..925915e 100644
--- a/lib/CodeGen/RegAllocSimple.cpp
+++ b/lib/CodeGen/RegAllocSimple.cpp
@@ -324,6 +324,10 @@
MBB != MBBe; ++MBB)
AllocateBasicBlock(*MBB);
+ // Round stack allocation up to a nice alignment to keep the stack aligned
+ // FIXME: This is X86 specific! Move to frame manager
+ NumBytesAllocated = (NumBytesAllocated + 3) & ~3;
+
// Add prologue to the function...
RegInfo->emitPrologue(Fn, NumBytesAllocated);