[NewPM] Add back some codegen IR pass test removed in ebc88811b5c9ed

[ychen]

part of D85168

llvm/test/CodeGen/X86/unreachableblockelim.ll

 ; RUN: opt -S < %s -unreachableblockelim | FileCheck %s
+; RUN: llc -enable-new-pm -passes='unreachableblockelim' < %s | FileCheck %s
 
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"
 
 declare void @abort()
 
 ; CHECK-LABEL: @foo(
 ; CHECK-NOT: return:

llvm/test/Transforms/PreISelIntrinsicLowering/load-relative.ll

 ; RUN: opt -pre-isel-intrinsic-lowering -S -o - %s | FileCheck %s
+; RUN: llc -enable-new-pm -passes='pre-isel-intrinsic-lowering' < %s | FileCheck %s
 
 ; CHECK: define i8* @foo32(i8* [[P:%.*]], i32 [[O:%.*]])
 define i8* @foo32(i8* %p, i32 %o) {
   ; CHECK: [[OP:%.*]] = getelementptr i8, i8* [[P]], i32 [[O]]
   ; CHECK: [[OPI32:%.*]] = bitcast i8* [[OP]] to i32*
   ; CHECK: [[OI32:%.*]] = load i32, i32* [[OPI32]], align 4
   ; CHECK: [[R:%.*]] = getelementptr i8, i8* [[P]], i32 [[OI32]]
   ; CHECK: ret i8* [[R]]

llvm/test/Transforms/PreISelIntrinsicLowering/objc-arc.ll

 ; RUN: opt -pre-isel-intrinsic-lowering -S -o - %s | FileCheck %s
+; RUN: llc -enable-new-pm -passes='pre-isel-intrinsic-lowering' < %s | FileCheck %s
 
 ; Make sure calls to the objc intrinsics are translated to calls in to the
 ; runtime
 
 define i8* @test_objc_autorelease(i8* %arg0) {
 ; CHECK-LABEL: test_objc_autorelease
 ; CHECK-NEXT: entry
 ; CHECK-NEXT: %0 = notail call i8* @objc_autorelease(i8* %arg0)