Revert "[CodeGenCXX] Treat 'this' as noalias in constructors"

This reverts commit https://reviews.llvm.org/rL344150 which causes
MachineOutliner related failures on the ppc64le multistage buildbot.

llvm-svn: 344526
diff --git a/clang/test/OpenMP/distribute_simd_private_codegen.cpp b/clang/test/OpenMP/distribute_simd_private_codegen.cpp
index 49605fc..f675158 100644
--- a/clang/test/OpenMP/distribute_simd_private_codegen.cpp
+++ b/clang/test/OpenMP/distribute_simd_private_codegen.cpp
@@ -158,7 +158,7 @@
 
 // CHECK: define{{.*}} i{{[0-9]+}} @main()
 // CHECK: [[TEST:%.+]] = alloca [[S_FLOAT_TY]],
-// CHECK: call {{.*}} [[S_FLOAT_TY_DEF_CONSTR:@.+]]([[S_FLOAT_TY]]* noalias [[TEST]])
+// CHECK: call {{.*}} [[S_FLOAT_TY_DEF_CONSTR:@.+]]([[S_FLOAT_TY]]* [[TEST]])
 // CHECK: call i{{[0-9]+}} @__tgt_target_teams(
 // CHECK: call void [[OFFLOAD_FUN:@.+]](
 // CHECK: ret
@@ -180,17 +180,17 @@
 // CHECK-NOT: [[VEC_PRIV]]
 // CHECK: {{.+}}:
 // CHECK: [[S_ARR_PRIV_ITEM:%.+]] = phi [[S_FLOAT_TY]]*
-// CHECK: call {{.*}} [[S_FLOAT_TY_DEF_CONSTR]]([[S_FLOAT_TY]]* noalias [[S_ARR_PRIV_ITEM]])
+// CHECK: call {{.*}} [[S_FLOAT_TY_DEF_CONSTR]]([[S_FLOAT_TY]]* [[S_ARR_PRIV_ITEM]])
 // CHECK-NOT: [[T_VAR_PRIV]]
 // CHECK-NOT: [[VEC_PRIV]]
-// CHECK: call {{.*}} [[S_FLOAT_TY_DEF_CONSTR]]([[S_FLOAT_TY]]* noalias [[VAR_PRIV]])
+// CHECK: call {{.*}} [[S_FLOAT_TY_DEF_CONSTR]]([[S_FLOAT_TY]]* [[VAR_PRIV]])
 // CHECK: call void @__kmpc_for_static_init_4(
 // CHECK: call void @__kmpc_for_static_fini(
 // CHECK: ret void
 
 // CHECK: define{{.*}} i{{[0-9]+}} [[TMAIN_INT:@.+]]()
 // CHECK: [[TEST:%.+]] = alloca [[S_INT_TY]],
-// CHECK: call {{.*}} [[S_INT_TY_DEF_CONSTR:@.+]]([[S_INT_TY]]* noalias [[TEST]])
+// CHECK: call {{.*}} [[S_INT_TY_DEF_CONSTR:@.+]]([[S_INT_TY]]* [[TEST]])
 // CHECK: call i{{[0-9]+}} @__tgt_target_teams(
 // CHECK: call void [[OFFLOAD_FUN_1:@.+]](
 // CHECK: ret
@@ -212,10 +212,10 @@
 // CHECK-NOT: [[VEC_PRIV]]
 // CHECK: {{.+}}:
 // CHECK: [[S_ARR_PRIV_ITEM:%.+]] = phi [[S_INT_TY]]*
-// CHECK: call {{.*}} [[S_INT_TY_DEF_CONSTR]]([[S_INT_TY]]* noalias [[S_ARR_PRIV_ITEM]])
+// CHECK: call {{.*}} [[S_INT_TY_DEF_CONSTR]]([[S_INT_TY]]* [[S_ARR_PRIV_ITEM]])
 // CHECK-NOT: [[T_VAR_PRIV]]
 // CHECK-NOT: [[VEC_PRIV]]
-// CHECK: call {{.*}} [[S_INT_TY_DEF_CONSTR]]([[S_INT_TY]]* noalias [[VAR_PRIV]])
+// CHECK: call {{.*}} [[S_INT_TY_DEF_CONSTR]]([[S_INT_TY]]* [[VAR_PRIV]])
 // CHECK: call void @__kmpc_for_static_init_4(
 // CHECK: call void @__kmpc_for_static_fini(
 // CHECK: ret void