1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -S -instsimplify < %s | FileCheck %s
3
4; A 0 valued byval pointer may be valid
5define i1 @byval_may_be_zero(i32* byval(i32) %ptr) null_pointer_is_valid {
6; CHECK-LABEL: @byval_may_be_zero(
7; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32* [[PTR:%.*]], null
8; CHECK-NEXT:    ret i1 [[CMP]]
9;
10  %cmp = icmp eq i32* %ptr, null
11  ret i1 %cmp
12}
13
14define i1 @nonnull_may_be_zero(i32* nonnull %ptr) null_pointer_is_valid {
15; CHECK-LABEL: @nonnull_may_be_zero(
16; CHECK-NEXT:    ret i1 false
17;
18  %cmp = icmp eq i32* %ptr, null
19  ret i1 %cmp
20}
21