From: Matt Arsenault <Matthew.Arsenault@amd.com>
Date: Thu, 17 Jul 2014 06:13:41 +0000 (+0000)
Subject: R600: Short circuit alloca check if address space isn't private.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=df4663be6a9dd427ee0b73a1ea47d6791e5dfc53;p=oota-llvm.git

R600: Short circuit alloca check if address space isn't private.

Skip calling GetUnderlyingObject in cases where it obviously
isn't from an alloca. This should only be a compile time improvement.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213229 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/R600/AMDGPUTargetTransformInfo.cpp b/lib/Target/R600/AMDGPUTargetTransformInfo.cpp
index ea78f431588..f90b92f7c94 100644
--- a/lib/Target/R600/AMDGPUTargetTransformInfo.cpp
+++ b/lib/Target/R600/AMDGPUTargetTransformInfo.cpp
@@ -101,7 +101,7 @@ void AMDGPUTTI::getUnrollingPreferences(Loop *L,
     for (BasicBlock::const_iterator I = BB->begin(), E = BB->end();
                                                       I != E; ++I) {
       const GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(I);
-      if (!GEP)
+      if (!GEP || GEP->getAddressSpace() != AMDGPUAS::PRIVATE_ADDRESS)
         continue;
       const Value *Ptr = GEP->getPointerOperand();
       const AllocaInst *Alloca = dyn_cast<AllocaInst>(GetUnderlyingObject(Ptr));