Add first two tests

Author: rolfmorel

mlir/test/Dialect/LLVMIR/data-layout-from-target-invalid.mlir

@@ -0,0 +1,8 @@
+// RUN: mlir-opt %s -llvm-data-layout-from-target --split-input-file --verify-diagnostics
+
+// expected-error @+1 {{failed to obtain llvm::DataLayout from #llvm.target}}
+module attributes { dlti.dl_spec = #dlti.dl_spec<index = 32>,
+llvm.target =
+    #llvm.target<triple="x64_86-unknown-linux",
+                 chip="lakesky"> } {
+}

mlir/test/Dialect/LLVMIR/data-layout-from-target.mlir

@@ -0,0 +1,41 @@
+// RUN: mlir-opt -llvm-data-layout-from-target -split-input-file %s | FileCheck %s
+
+// CHECK: module attributes
+// CHECK-SAME: dlti.dl_spec = #llvm.data_layout
+// CHECK-SAME: llvm.target = #llvm.target<
+// CHECK-SAME:   triple = "x86_64-unknown-linux"
+// CHECK-NOT:    chip =
+// CHECK-NOT:    #llvm.target_features
+
+module attributes { llvm.target = #llvm.target<triple = "x86_64-unknown-linux"> } {
+}
+
+// -----
+
+// CHECK: module attributes
+// CHECK-SAME: dlti.dl_spec = #llvm.data_layout<"[[DL_STR:.*]]">
+// CHECK-SAME: llvm.target = #llvm.target<
+// CHECK-SAME:   triple = "x86_64-unknown-linux"
+// CHECK-SAME:   chip = "skylake"
+// CHECK-SAME:   #llvm.target_features<["+mmx", "+sse"]>
+
+module attributes { llvm.target = #llvm.target<triple = "x86_64-unknown-linux",
+                                               chip = "skylake",
+                                               #llvm.target_features<["+mmx", "+sse"]>> } {
+}
+
+// -----
+
+// CHECK: module attributes
+// CHECK-SAME: dlti.dl_spec = #dlti.dl_spec<"dlti.endianness" = "little"
+// CHECK-SAME:   index = 32
+// CHECK-SAME: llvm.target = #llvm.target<
+// CHECK-SAME:   triple = "x86_64-unknown-linux"
+// CHECK-SAME:   chip = "skylake"
+// CHECK-SAME:   #llvm.target_features<["+mmx", "+sse"]>
+
+module attributes { dlti.dl_spec = #dlti.dl_spec<index = 32>,
+                    llvm.target = #llvm.target<triple = "x86_64-unknown-linux",
+                                               chip = "skylake",
+                                               #llvm.target_features<["+mmx", "+sse"]>> } {
+}