commit 1cf9ab8ab8cf0fc72819d8aa68ba6cc328e33d05
author Bill Wendling <isanbard@gmail.com> Thu Aug 01 21:41:02 2013 +0000
committer Bill Wendling <isanbard@gmail.com> Thu Aug 01 21:41:02 2013 +0000
tree 45a4531881dc81481a73ff5648f2dc90c0d3888a
parent ac00b79047318f917c5c49c487d5b8b3196e4d93

Use function attributes to indicate if we don't want to realign the stack.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@187617 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/BackendUtil.cpp

diff --git a/lib/CodeGen/BackendUtil.cpp b/lib/CodeGen/BackendUtil.cpp
index 1bf4918..79cbc38 100644
--- a/lib/CodeGen/BackendUtil.cpp
+++ b/lib/CodeGen/BackendUtil.cpp
@@ -451,7 +451,6 @@
   Options.UnsafeFPMath = CodeGenOpts.UnsafeFPMath;
   Options.UseSoftFloat = CodeGenOpts.SoftFloat;
   Options.StackAlignmentOverride = CodeGenOpts.StackAlignment;
-  Options.RealignStack = CodeGenOpts.StackRealignment;
   Options.DisableTailCalls = CodeGenOpts.DisableTailCalls;
   Options.TrapFuncName = CodeGenOpts.TrapFuncName;
   Options.PositionIndependentExecutable = LangOpts.PIELevel != 0;

lib/CodeGen/CGCall.cpp

diff --git a/lib/CodeGen/CGCall.cpp b/lib/CodeGen/CGCall.cpp
index b4c710c..11ee388 100644
--- a/lib/CodeGen/CGCall.cpp
+++ b/lib/CodeGen/CGCall.cpp
@@ -1084,6 +1084,9 @@
 
     FuncAttrs.addAttribute("no-frame-pointer-elim-non-leaf",
                            llvm::toStringRef(NoFramePointerElimNonLeaf));
+
+    if (!CodeGenOpts.StackRealignment)
+      FuncAttrs.addAttribute("no-realign-stack");
   }
 
   QualType RetTy = FI.getReturnType();