From: Bill Wendling <isanbard@gmail.com>
Date: Wed, 7 Dec 2011 07:49:49 +0000 (+0000)
Subject: Fix off-by-one error when encoding the stack size for a frameless stack.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c61751373ab58f226ec37368c139404e67e847c0;p=oota-llvm.git

Fix off-by-one error when encoding the stack size for a frameless stack.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146029 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86FrameLowering.cpp b/lib/Target/X86/X86FrameLowering.cpp
index 158acc90c10..c0e86cad642 100644
--- a/lib/Target/X86/X86FrameLowering.cpp
+++ b/lib/Target/X86/X86FrameLowering.cpp
@@ -561,7 +561,7 @@ uint32_t X86FrameLowering::getCompactUnwindEncoding(MachineFunction &MF) const {
     CompactUnwindEncoding |= (StackAdjust & 0xFF) << 16;
     CompactUnwindEncoding |= RegEnc & 0x7FFF;
   } else {
-    uint32_t TotalStackSize = StackAdjust + StackSize;
+    uint32_t TotalStackSize = StackAdjust + StackSize + 1;
     if ((TotalStackSize & 0xFF) == TotalStackSize) {
       // Frameless stack with a small stack size.
       CompactUnwindEncoding |= 0x02000000;