From: Chandler Carruth <chandlerc@gmail.com>
Date: Tue, 25 Feb 2014 11:08:02 +0000 (+0000)
Subject: [SROA] Simplify some of the logic to dig out the old pointer value by
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b59c39e5203130a62d699b2ee623ff92c1da4383;p=oota-llvm.git

[SROA] Simplify some of the logic to dig out the old pointer value by
using OldPtr more heavily. Lots of this code was written before the
rewriter had an OldPtr member setup ahead of time. There are already
asserts in place that should ensure this doesn't change any
functionality.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202135 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/SROA.cpp b/lib/Transforms/Scalar/SROA.cpp
index 46f3ab5c362..66da6c6ee0d 100644
--- a/lib/Transforms/Scalar/SROA.cpp
+++ b/lib/Transforms/Scalar/SROA.cpp
@@ -2330,8 +2330,7 @@ private:
     if (!isa<Constant>(II.getLength())) {
       assert(!IsSplit);
       assert(BeginOffset >= NewAllocaBeginOffset);
-      II.setDest(
-          getAdjustedAllocaPtr(IRB, BeginOffset, II.getRawDest()->getType()));
+      II.setDest(getAdjustedAllocaPtr(IRB, BeginOffset, OldPtr->getType()));
       Type *CstTy = II.getAlignmentCst()->getType();
       II.setAlignment(ConstantInt::get(CstTy, getOffsetAlign(BeginOffset)));
 
@@ -2363,7 +2362,7 @@ private:
       Type *SizeTy = II.getLength()->getType();
       Constant *Size = ConstantInt::get(SizeTy, NewEndOffset - NewBeginOffset);
       CallInst *New = IRB.CreateMemSet(
-          getAdjustedAllocaPtr(IRB, NewBeginOffset, II.getRawDest()->getType()),
+          getAdjustedAllocaPtr(IRB, NewBeginOffset, OldPtr->getType()),
           II.getValue(), Size, getOffsetAlign(SliceOffset), II.isVolatile());
       (void)New;
       DEBUG(dbgs() << "          to: " << *New << "\n");
@@ -2470,19 +2469,18 @@ private:
     // memcpy, and so simply updating the pointers is the necessary for us to
     // update both source and dest of a single call.
     if (!IsSplittable) {
-      Value *OldOp = IsDest ? II.getRawDest() : II.getRawSource();
+      Value *AdjustedPtr =
+          getAdjustedAllocaPtr(IRB, BeginOffset, OldPtr->getType());
       if (IsDest)
-        II.setDest(
-            getAdjustedAllocaPtr(IRB, BeginOffset, II.getRawDest()->getType()));
+        II.setDest(AdjustedPtr);
       else
-        II.setSource(getAdjustedAllocaPtr(IRB, BeginOffset,
-                                          II.getRawSource()->getType()));
+        II.setSource(AdjustedPtr);
 
       Type *CstTy = II.getAlignmentCst()->getType();
       II.setAlignment(ConstantInt::get(CstTy, Align));
 
       DEBUG(dbgs() << "          to: " << II << "\n");
-      deleteIfTriviallyDead(OldOp);
+      deleteIfTriviallyDead(OldPtr);
       return false;
     }
     // For split transfer intrinsics we have an incredibly useful assurance:
@@ -2531,9 +2529,8 @@ private:
       // a single, simple GEP in most cases.
       OtherPtr = getAdjustedPtr(IRB, DL, OtherPtr, RelOffset, OtherPtrTy);
 
-      Value *OurPtr = getAdjustedAllocaPtr(
-          IRB, NewBeginOffset,
-          IsDest ? II.getRawDest()->getType() : II.getRawSource()->getType());
+      Value *OurPtr =
+          getAdjustedAllocaPtr(IRB, NewBeginOffset, OldPtr->getType());
       Type *SizeTy = II.getLength()->getType();
       Constant *Size = ConstantInt::get(SizeTy, NewEndOffset - NewBeginOffset);
 
@@ -2631,8 +2628,7 @@ private:
     ConstantInt *Size
       = ConstantInt::get(cast<IntegerType>(II.getArgOperand(0)->getType()),
                          NewEndOffset - NewBeginOffset);
-    Value *Ptr =
-        getAdjustedAllocaPtr(IRB, NewBeginOffset, II.getArgOperand(1)->getType());
+    Value *Ptr = getAdjustedAllocaPtr(IRB, NewBeginOffset, OldPtr->getType());
     Value *New;
     if (II.getIntrinsicID() == Intrinsic::lifetime_start)
       New = IRB.CreateLifetimeStart(Ptr, Size);