[X86] Merge (near) duplicate scalar non-temporal store code. NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@286595 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CGBuiltin.cpp

@@ -7514,36 +7514,26 @@ Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID,
   }
 
   case X86::BI__builtin_ia32_movnti:
-  case X86::BI__builtin_ia32_movnti64: {
-    llvm::MDNode *Node = llvm::MDNode::get(
-        getLLVMContext(), llvm::ConstantAsMetadata::get(Builder.getInt32(1)));
-
-    // Convert the type of the pointer to a pointer to the stored type.
-    Value *BC = Builder.CreateBitCast(Ops[0],
-                                llvm::PointerType::getUnqual(Ops[1]->getType()),
-                                      "cast");
-    StoreInst *SI = Builder.CreateDefaultAlignedStore(Ops[1], BC);
-    SI->setMetadata(CGM.getModule().getMDKindID("nontemporal"), Node);
-
-    // No alignment for scalar intrinsic store.
-    SI->setAlignment(1);
-    return SI;
-  }
+  case X86::BI__builtin_ia32_movnti64:
   case X86::BI__builtin_ia32_movntsd:
   case X86::BI__builtin_ia32_movntss: {
     llvm::MDNode *Node = llvm::MDNode::get(
         getLLVMContext(), llvm::ConstantAsMetadata::get(Builder.getInt32(1)));
 
+    Value *Ptr = Ops[0];
+    Value *Src = Ops[1];
+
     // Extract the 0'th element of the source vector.
-    Value *Scl = Builder.CreateExtractElement(Ops[1], (uint64_t)0, "extract");
+    if (BuiltinID == X86::BI__builtin_ia32_movntsd ||
+        BuiltinID == X86::BI__builtin_ia32_movntss)
+      Src = Builder.CreateExtractElement(Src, (uint64_t)0, "extract");
 
     // Convert the type of the pointer to a pointer to the stored type.
-    Value *BC = Builder.CreateBitCast(Ops[0],
-                                llvm::PointerType::getUnqual(Scl->getType()),
-                                      "cast");
+    Value *BC = Builder.CreateBitCast(
+        Ptr, llvm::PointerType::getUnqual(Src->getType()), "cast");
 
     // Unaligned nontemporal store of the scalar value.
-    StoreInst *SI = Builder.CreateDefaultAlignedStore(Scl, BC);
+    StoreInst *SI = Builder.CreateDefaultAlignedStore(Src, BC);
     SI->setMetadata(CGM.getModule().getMDKindID("nontemporal"), Node);
     SI->setAlignment(1);
     return SI;