[NFC] Adding the align attribute on Atomic{CmpXchg|RMW}Inst

This is the first step to add support for the align attribute to AtomicRMWInst and AtomicCmpXchgInst.
Next step is to add support in IRBuilder and BitcodeReader.
Bug: https://bugs.llvm.org/show_bug.cgi?id=27168

Differential Revision: https://reviews.llvm.org/D83136

1 files changed, 7 insertions, 3 deletions

diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index 4471302..dceb492 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -5020,8 +5020,10 @@ Error BitcodeReader::parseFunctionBody(Function *F) {
       else
         FailureOrdering = getDecodedOrdering(Record[OpNum + 3]);
 
-      I = new AtomicCmpXchgInst(Ptr, Cmp, New, SuccessOrdering, FailureOrdering,
-                                SSID);
+      Align Alignment(
+          TheModule->getDataLayout().getTypeStoreSize(Cmp->getType()));
+      I = new AtomicCmpXchgInst(Ptr, Cmp, New, Alignment, SuccessOrdering,
+                                FailureOrdering, SSID);
       FullTy = StructType::get(Context, {FullTy, Type::getInt1Ty(Context)});
       cast<AtomicCmpXchgInst>(I)->setVolatile(Record[OpNum]);
 
@@ -5058,7 +5060,9 @@ Error BitcodeReader::parseFunctionBody(Function *F) {
           Ordering == AtomicOrdering::Unordered)
         return error("Invalid record");
       SyncScope::ID SSID = getDecodedSyncScopeID(Record[OpNum + 3]);
-      I = new AtomicRMWInst(Operation, Ptr, Val, Ordering, SSID);
+      Align Alignment(
+          TheModule->getDataLayout().getTypeStoreSize(Val->getType()));
+      I = new AtomicRMWInst(Operation, Ptr, Val, Alignment, Ordering, SSID);
       FullTy = getPointerElementFlatType(FullTy);
       cast<AtomicRMWInst>(I)->setVolatile(Record[OpNum+1]);
       InstructionList.push_back(I);