From 3cc3a00570e8263369346cf2eef9a72488326952 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 13 Jan 2010 04:34:19 +0000
Subject: [PATCH] reduce indentation and add a fast-path to EmitGlobalConstant
 for 8-byte integers on 64-bit systems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93291 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/AsmPrinter/AsmPrinter.cpp | 27 ++++++++++++++++++++++-----
 1 file changed, 22 insertions(+), 5 deletions(-)

diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index a5ce6c063f5..d5a74414858 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -1305,22 +1305,39 @@ void AsmPrinter::EmitGlobalConstant(const Constant *CV, unsigned AddrSpace) {
   if (CV->isNullValue() || isa<UndefValue>(CV)) {
     EmitZeros(Size, AddrSpace);
     return;
-  } else if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
+  }
+  
+  if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
     EmitGlobalConstantArray(CVA , AddrSpace);
     return;
-  } else if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) {
+  }
+  
+  if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) {
     EmitGlobalConstantStruct(CVS, AddrSpace);
     return;
-  } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
+  }
+
+  if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
     EmitGlobalConstantFP(CFP, AddrSpace);
     return;
-  } else if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
+  }
+  
+  if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
+    // If we can directly emit an 8-byte constant, do it.
+    if (Size == 8)
+      if (const char *Data64Dir = MAI->getData64bitsDirective(AddrSpace)) {
+        O << Data64Dir << CI->getZExtValue() << '\n';
+        return;
+      }
+
     // Small integers are handled below; large integers are handled here.
     if (Size > 4) {
       EmitGlobalConstantLargeInt(CI, AddrSpace);
       return;
     }
-  } else if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
+  }
+  
+  if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
     EmitGlobalConstantVector(CP);
     return;
   }