Change memcpy/memove/memset to have dest and source alignment attributes.

Summary:
  This change is step three in the series of changes to remove alignment argument from
memcpy/memmove/memset in favour of alignment attributes. 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.
Step 4) Update Polly to use the new IRBuilder API.
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 getDestAlignment()
and getSourceAlignment() instead.
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

Reviewers: rjmccall

Subscribers: jyknight, nemanjai, nhaehnle, javed.absar, sbc100, aheejin, kbarton, fedor.sergeev, cfe-commits

Differential Revision: https://reviews.llvm.org/D41677

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@323617 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 9 deletions

diff --git a/lib/CodeGen/CGBuilder.h b/lib/CodeGen/CGBuilder.h
index 61fe4aac3a..3a4224873f 100644
--- a/lib/CodeGen/CGBuilder.h
+++ b/lib/CodeGen/CGBuilder.h
@@ -258,23 +258,23 @@ public:
   using CGBuilderBaseTy::CreateMemCpy;
   llvm::CallInst *CreateMemCpy(Address Dest, Address Src, llvm::Value *Size,
                                bool IsVolatile = false) {
-    auto Align = std::min(Dest.getAlignment(), Src.getAlignment());
-    return CreateMemCpy(Dest.getPointer(), Src.getPointer(), Size,
-                        Align.getQuantity(), IsVolatile);
+    return CreateMemCpy(Dest.getPointer(), Dest.getAlignment().getQuantity(),
+                        Src.getPointer(), Src.getAlignment().getQuantity(),
+                        Size,IsVolatile);
   }
   llvm::CallInst *CreateMemCpy(Address Dest, Address Src, uint64_t Size,
                                bool IsVolatile = false) {
-    auto Align = std::min(Dest.getAlignment(), Src.getAlignment());
-    return CreateMemCpy(Dest.getPointer(), Src.getPointer(), Size,
-                        Align.getQuantity(), IsVolatile);
+    return CreateMemCpy(Dest.getPointer(), Dest.getAlignment().getQuantity(),
+                        Src.getPointer(), Src.getAlignment().getQuantity(),
+                        Size, IsVolatile);
   }
 
   using CGBuilderBaseTy::CreateMemMove;
   llvm::CallInst *CreateMemMove(Address Dest, Address Src, llvm::Value *Size,
                                 bool IsVolatile = false) {
-    auto Align = std::min(Dest.getAlignment(), Src.getAlignment());
-    return CreateMemMove(Dest.getPointer(), Src.getPointer(), Size,
-                         Align.getQuantity(), IsVolatile);
+    return CreateMemMove(Dest.getPointer(), Dest.getAlignment().getQuantity(),
+                         Src.getPointer(), Src.getAlignment().getQuantity(),
+                         Size, IsVolatile);
   }
 
   using CGBuilderBaseTy::CreateMemSet;