[Hexagon] Update uses of deprecated IRBuilder CreateMemCpy/Move calls

Summary:
This change is part of step five in the series of changes to remove alignment argument from
memcpy/memmove/memset in favour of alignment attributes. In particular, this changes the
Hexagon LoopIdiom pass to cease using the old IRBuilder createMemCpy/createMemMove
single-alignment APIs in favour of the new API that allows setting source and
destination alignments independently.

Steps:
Step 1) Remove alignment parameter and create alignment parameter attributes for
memcpy/memmove/memset. ( rL322965, rC322964, rL322963 )
Step 2) Expand the IRBuilder API to allow creation of memcpy/memmove with differing
source and dest alignments. ( rL323597 )
Step 3) Update Clang to use the new IRBuilder API. ( rC323617 )
Step 4) Update Polly to use the new IRBuilder API. ( rL323618 )
Step 5) Update LLVM passes that create memcpy/memmove calls to use the new IRBuilder API,
and those that use use MemIntrinsicInst::[get|set]Alignment() to use [get|set]DestAlignment()
and [get|set]SourceAlignment() instead. ( rL323886, rL323891, rL324148, rL324273, rL324278,
rL324384, rL324395, rL324402, rL324626, rL324642, rL324653, rL324654, rL324773, rL324774,
rL324781 )
Step 6) Remove the single-alignment IRBuilder API for memcpy/memmove, and the
MemIntrinsicInst::[get|set]Alignment() methods.

Reference
   http://lists.llvm.org/pipermail/llvm-dev/2015-August/089384.html
   http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20151109/312083.html

llvm-svn: 324784

1 files changed, 6 insertions, 5 deletions

diff --git a/llvm/lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp b/llvm/lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp
index eca2bb6573e..581daca13d6 100644
--- a/llvm/lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonLoopIdiomRecognition.cpp
@@ -2138,7 +2138,6 @@ CleanupAndExit:
   // pointer size if it isn't already.
   LLVMContext &Ctx = SI->getContext();
   BECount = SE->getTruncateOrZeroExtend(BECount, IntPtrTy);
-  unsigned Alignment = std::min(SI->getAlignment(), LI->getAlignment());
   DebugLoc DLoc = SI->getDebugLoc();
 
   const SCEV *NumBytesS =
@@ -2272,12 +2271,14 @@ CleanupAndExit:
                       : CondBuilder.CreateBitCast(LoadBasePtr, Int32PtrTy);
       NewCall = CondBuilder.CreateCall(Fn, {Op0, Op1, NumWords});
     } else {
-      NewCall = CondBuilder.CreateMemMove(StoreBasePtr, LoadBasePtr,
-                                          NumBytes, Alignment);
+      NewCall = CondBuilder.CreateMemMove(StoreBasePtr, SI->getAlignment(),
+                                          LoadBasePtr, LI->getAlignment(),
+                                          NumBytes);
     }
   } else {
-    NewCall = Builder.CreateMemCpy(StoreBasePtr, LoadBasePtr,
-                                   NumBytes, Alignment);
+    NewCall = Builder.CreateMemCpy(StoreBasePtr, SI->getAlignment(),
+                                   LoadBasePtr, LI->getAlignment(),
+                                   NumBytes);
     // Okay, the memcpy has been formed.  Zap the original store and
     // anything that feeds into it.
     RecursivelyDeleteTriviallyDeadInstructions(SI, TLI);