From e7b406d7ac150189522f0a139f1a2f76bde2cb26 Mon Sep 17 00:00:00 2001
From: Akira Hatanaka <ahatanaka@mips.com>
Date: Tue, 30 Oct 2012 19:07:58 +0000
Subject: [PATCH] Do not do tail-call optimization if target is mips16.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167039 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Mips/MipsISelLowering.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index b485b5ea16d..4479c48a915 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -2665,6 +2665,10 @@ IsEligibleForTailCallOptimization(const MipsCC &MipsCCInfo, bool IsVarArg,
   if (!EnableMipsTailCalls)
     return false;
 
+  // No tail call optimization for mips16.
+  if (Subtarget->inMips16Mode())
+    return false;
+
   if (MipsCCInfo.hasByValArg() || IsVarArg)
     return false;