From: Chad Rosier <mcrosier@apple.com>
Date: Fri, 24 Jun 2011 21:15:36 +0000 (+0000)
Subject: Hoist simple check above more complex checking to avoid unnecessary
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=2416da36ace2130607c652a94b814de7e724efeb;p=oota-llvm.git

Hoist simple check above more complex checking to avoid unnecessary
overheads.  No functional change intended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133824 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 13bef08fe53..6c606be5912 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -2556,6 +2556,11 @@ X86TargetLowering::IsEligibleForTailCallOptimization(SDValue Callee,
   if (isCalleeStructRet || isCallerStructRet)
     return false;
 
+  // An stdcall caller is expected to clean up its arguments; the callee
+  // isn't going to do that.
+  if (!CCMatch && CallerCC==CallingConv::X86_StdCall)
+    return false;
+
   // Do not sibcall optimize vararg calls unless all arguments are passed via
   // registers.
   if (isVarArg && !Outs.empty()) {
@@ -2692,11 +2697,6 @@ X86TargetLowering::IsEligibleForTailCallOptimization(SDValue Callee,
     }
   }
 
-  // An stdcall caller is expected to clean up its arguments; the callee
-  // isn't going to do that.
-  if (!CCMatch && CallerCC==CallingConv::X86_StdCall)
-    return false;
-
   return true;
 }