From e9c0bac4c5de68c217f54a38eb786de3dface6a5 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Fri, 2 Feb 2007 20:51:48 +0000
Subject: [PATCH] eliminate a malloc/free for (almost) every GEP processed. 
 This speeds up IPSCCP 3.3% on kimwitu.

llvm-svn: 33793
---
 lib/Transforms/Scalar/SCCP.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/lib/Transforms/Scalar/SCCP.cpp b/lib/Transforms/Scalar/SCCP.cpp
index d22a1e286bf..fdb5b1602a3 100644
--- a/lib/Transforms/Scalar/SCCP.cpp
+++ b/lib/Transforms/Scalar/SCCP.cpp
@@ -968,7 +968,7 @@ void SCCPSolver::visitGetElementPtrInst(GetElementPtrInst &I) {
   LatticeVal &IV = ValueState[&I];
   if (IV.isOverdefined()) return;
 
-  std::vector<Constant*> Operands;
+  SmallVector<Constant*, 8> Operands;
   Operands.reserve(I.getNumOperands());
 
   for (unsigned i = 0, e = I.getNumOperands(); i != e; ++i) {
@@ -986,7 +986,8 @@ void SCCPSolver::visitGetElementPtrInst(GetElementPtrInst &I) {
   Constant *Ptr = Operands[0];
   Operands.erase(Operands.begin());  // Erase the pointer from idx list...
 
-  markConstant(IV, &I, ConstantExpr::getGetElementPtr(Ptr, Operands));
+  markConstant(IV, &I, ConstantExpr::getGetElementPtr(Ptr, &Operands[0],
+                                                      Operands.size()));
 }
 
 void SCCPSolver::visitStoreInst(Instruction &SI) {