[NFC] Check for ptrtoadd instead of ptrtoint (#3605)

Adjustment is required after llvm/llvm-project@34a61e3

Author: MrSidims

test/transcoding/ptr_diff.ll

@@ -43,10 +43,10 @@ define spir_kernel void @test(float %a) local_unnamed_addr #0 {
 entry:
   %0 = alloca float, align 4
   store float %a, ptr %0, align 4
-; CHECK-LLVM: %[[#Arg1:]] = ptrtoint ptr %[[#]] to i64
-; CHECK-LLVM: %[[#Arg2:]] = ptrtoint ptr %[[#]] to i64
+; CHECK-LLVM: %[[#Arg1:]] = ptrtoaddr ptr %[[#]] to i64
+; CHECK-LLVM: %[[#Arg2:]] = ptrtoaddr ptr %[[#]] to i64
 ; CHECK-LLVM: %[[#Sub:]] = sub i64 %[[#Arg1]], %[[#Arg2]]
-; CHECK-LLVM: sdiv exact i64 %[[#Sub]], ptrtoint (ptr getelementptr (float, ptr null, i32 1) to i64)
+; CHECK-LLVM: sdiv exact i64 %[[#Sub]], 4
   %1 = call spir_func noundef i32 @_Z15__spirv_PtrDiff(ptr %0, ptr %0)
   ret void
 }