From 1a82d4c088707c791c792f6822f611b47a12bdfe Mon Sep 17 00:00:00 2001 From: Dimitry Andric Date: Sun, 5 Jul 2015 14:21:36 +0000 Subject: Vendor import of llvm trunk r241361: https://llvm.org/svn/llvm-project/llvm/trunk@241361 --- lib/Transforms/Instrumentation/SafeStack.cpp | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'lib/Transforms/Instrumentation/SafeStack.cpp') diff --git a/lib/Transforms/Instrumentation/SafeStack.cpp b/lib/Transforms/Instrumentation/SafeStack.cpp index 13c541218313..6b185a2b127b 100644 --- a/lib/Transforms/Instrumentation/SafeStack.cpp +++ b/lib/Transforms/Instrumentation/SafeStack.cpp @@ -165,7 +165,7 @@ class SafeStack : public FunctionPass { Type *Int32Ty; Type *Int8Ty; - Constant *UnsafeStackPtr; + Constant *UnsafeStackPtr = nullptr; /// Unsafe stack alignment. Each stack frame must ensure that the stack is /// aligned to this value. We need to re-align the unsafe stack if the @@ -232,8 +232,6 @@ public: Int32Ty = Type::getInt32Ty(M.getContext()); Int8Ty = Type::getInt8Ty(M.getContext()); - UnsafeStackPtr = getOrCreateUnsafeStackPtr(M); - return false; } @@ -576,6 +574,9 @@ bool SafeStack::runOnFunction(Function &F) { if (!StackRestorePoints.empty()) ++NumUnsafeStackRestorePointsFunctions; + if (!UnsafeStackPtr) + UnsafeStackPtr = getOrCreateUnsafeStackPtr(*F.getParent()); + // The top of the unsafe stack after all unsafe static allocas are allocated. Value *StaticTop = moveStaticAllocasToUnsafeStack(F, StaticAllocas, Returns); -- cgit v1.2.3