1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -instcombine -S | FileCheck %s
3
4; Passing select(cond, null, v) as nonnull should be optimized to passing v
5
6define nonnull i32* @pr48975(i32** %.0) {
7; CHECK-LABEL: @pr48975(
8; CHECK-NEXT:    [[DOT1:%.*]] = load i32*, i32** [[DOT0:%.*]], align 8
9; CHECK-NEXT:    [[DOT2:%.*]] = icmp eq i32* [[DOT1]], null
10; CHECK-NEXT:    [[DOT3:%.*]] = bitcast i32** [[DOT0]] to i32*
11; CHECK-NEXT:    [[DOT4:%.*]] = select i1 [[DOT2]], i32* null, i32* [[DOT3]]
12; CHECK-NEXT:    ret i32* [[DOT4]]
13;
14  %.1 = load i32*, i32** %.0, align 8
15  %.2 = icmp eq i32* %.1, null
16  %.3 = bitcast i32** %.0 to i32*
17  %.4 = select i1 %.2, i32* null, i32* %.3
18  ret i32* %.4
19}
20
21define nonnull i32* @nonnull_ret(i1 %cond, i32* %p) {
22; CHECK-LABEL: @nonnull_ret(
23; CHECK-NEXT:    [[RES:%.*]] = select i1 [[COND:%.*]], i32* [[P:%.*]], i32* null
24; CHECK-NEXT:    ret i32* [[RES]]
25;
26  %res = select i1 %cond, i32* %p, i32* null
27  ret i32* %res
28}
29
30define void @nonnull_call(i1 %cond, i32* %p) {
31; CHECK-LABEL: @nonnull_call(
32; CHECK-NEXT:    [[RES:%.*]] = select i1 [[COND:%.*]], i32* null, i32* [[P:%.*]]
33; CHECK-NEXT:    call void @f(i32* nonnull [[RES]])
34; CHECK-NEXT:    ret void
35;
36  %res = select i1 %cond, i32* null, i32* %p
37  call void @f(i32* nonnull %res)
38  ret void
39}
40
41declare void @f(i32*)
42