From 742f2c9a43af3bae65922d2679de8835a6d4f302 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Wed, 25 Jul 2012 13:35:45 +0000
Subject: [PATCH] Factor a long list of conditions into a predicate function.
 No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160724 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86FastISel.cpp | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp
index 585b7a5c379..08ad7fa11d7 100644
--- a/lib/Target/X86/X86FastISel.cpp
+++ b/lib/Target/X86/X86FastISel.cpp
@@ -1516,6 +1516,20 @@ bool X86FastISel::X86SelectCall(const Instruction *I) {
   return DoSelectCall(I, 0);
 }
 
+static unsigned computeBytesPopedByCalle(const X86Subtarget &Subtarget,
+                                         const ImmutableCallSite &CS) {
+  if (Subtarget.is64Bit())
+    return 0;
+  if (Subtarget.isTargetWindows())
+    return 0;
+  CallingConv::ID CC = CS.getCallingConv();
+  if (CC == CallingConv::Fast || CC == CallingConv::GHC)
+    return 0;
+  if (!CS.paramHasAttr(1, Attribute::StructRet))
+    return 0;
+  return 4;
+}
+
 // Select either a call, or an llvm.memcpy/memmove/memset intrinsic
 bool X86FastISel::DoSelectCall(const Instruction *I, const char *MemIntName) {
   const CallInst *CI = cast<CallInst>(I);
@@ -1862,12 +1876,7 @@ bool X86FastISel::DoSelectCall(const Instruction *I, const char *MemIntName) {
 
   // Issue CALLSEQ_END
   unsigned AdjStackUp = TII.getCallFrameDestroyOpcode();
-  unsigned NumBytesCallee = 0;
-  if (!Subtarget->is64Bit() && !Subtarget->isTargetWindows() &&
-      !(CS.getCallingConv() == CallingConv::Fast ||
-        CS.getCallingConv() == CallingConv::GHC) &&
-      CS.paramHasAttr(1, Attribute::StructRet))
-    NumBytesCallee = 4;
+  const unsigned NumBytesCallee = computeBytesPopedByCalle(*Subtarget, CS);
   BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(AdjStackUp))
     .addImm(NumBytes).addImm(NumBytesCallee);