Change attribute name to match LLVM closely

Author: bcardosolopes

mlir/include/mlir/Dialect/LLVMIR/LLVMDialect.td

@@ -44,7 +44,7 @@ def LLVM_Dialect : Dialect {
     static StringRef getNoUndefAttrName() { return "llvm.noundef"; }
     static StringRef getDereferenceableAttrName() { return "llvm.dereferenceable"; }
     static StringRef getDereferenceableOrNullAttrName() { return "llvm.dereferenceable_or_null"; }
-    static StringRef getElementTypeAttrName() { return "llvm.element_type"; }
+    static StringRef getElementTypeAttrName() { return "llvm.elementtype"; }
     static StringRef getInAllocaAttrName() { return "llvm.inalloca"; }
     static StringRef getInRegAttrName() { return "llvm.inreg"; }
     static StringRef getNestAttrName() { return "llvm.nest"; }

mlir/test/Dialect/LLVMIR/call-intrin.mlir

@@ -120,6 +120,6 @@ llvm.func @intrinsic_call_arg_attrs(%arg0: i32) -> i32 {
 // CHECK-LABEL: intrinsic_element_type
 llvm.func @intrinsic_element_type(%arg0: !llvm.ptr) {
   // CHECK: call i64 @llvm.aarch64.ldxr.p0(ptr elementtype(i8) %{{.*}})
-  %0 = llvm.call_intrinsic "llvm.aarch64.ldxr.p0"(%arg0) : (!llvm.ptr {llvm.element_type = i8}) -> i64
+  %0 = llvm.call_intrinsic "llvm.aarch64.ldxr.p0"(%arg0) : (!llvm.ptr {llvm.elementtype = i8}) -> i64
   llvm.return
 }

mlir/test/Target/LLVMIR/Import/intrinsic-unregistered.ll

@@ -9,7 +9,7 @@ define dso_local void @t0(ptr %a) {
 
 ; CHECK-LABEL: llvm.func @llvm.aarch64.ldxr.p0(!llvm.ptr)
 ; CHECK-LABEL: llvm.func @t0
-; CHECK:   llvm.call_intrinsic "llvm.aarch64.ldxr.p0"({{.*}}) : (!llvm.ptr {llvm.element_type = i8}) -> i64
+; CHECK:   llvm.call_intrinsic "llvm.aarch64.ldxr.p0"({{.*}}) : (!llvm.ptr {llvm.elementtype = i8}) -> i64
 ; CHECK:   llvm.return
 ; CHECK: }