1; RUN: opt -S -passes=instsimplify < %s | FileCheck %s
2
3; CHECK-LABEL: definitely_in_bounds
4; CHECK: ret i8 0
5define i8 @definitely_in_bounds() {
6  ret i8 extractelement (<vscale x 16 x i8> zeroinitializer, i64 15)
7}
8
9; CHECK-LABEL: maybe_in_bounds
10; CHECK: ret i8 extractelement (<vscale x 16 x i8> zeroinitializer, i64 16)
11define i8 @maybe_in_bounds() {
12  ret i8 extractelement (<vscale x 16 x i8> zeroinitializer, i64 16)
13}
14
15; Examples of extracting a lane from a splat constant
16
17define i32 @extractconstant_shuffle_in_range(i32 %v) {
18; CHECK-LABEL: @extractconstant_shuffle_in_range(
19; CHECK-NEXT:    ret i32 1024
20;
21  %in = insertelement <vscale x 4 x i32> undef, i32 1024, i32 0
22  %splat = shufflevector <vscale x 4 x i32> %in, <vscale x 4 x i32> undef, <vscale x 4 x i32> zeroinitializer
23  %r = extractelement <vscale x 4 x i32> %splat, i32 1
24  ret i32 %r
25}
26
27define i32 @extractconstant_shuffle_maybe_out_of_range(i32 %v) {
28; CHECK-LABEL: @extractconstant_shuffle_maybe_out_of_range(
29; CHECK-NEXT:    ret i32 extractelement (<vscale x 4 x i32> shufflevector (<vscale x 4 x i32> insertelement (<vscale x 4 x i32> undef, i32 1024, i32 0), <vscale x 4 x i32> undef, <vscale x 4 x i32> zeroinitializer), i32 4)
30;
31  %in = insertelement <vscale x 4 x i32> undef, i32 1024, i32 0
32  %splat = shufflevector <vscale x 4 x i32> %in, <vscale x 4 x i32> undef, <vscale x 4 x i32> zeroinitializer
33  %r = extractelement <vscale x 4 x i32> %splat, i32 4
34  ret i32 %r
35}
36
37define i32 @extractconstant_shuffle_invalid_index(i32 %v) {
38; CHECK-LABEL: @extractconstant_shuffle_invalid_index(
39; CHECK-NEXT:    ret i32 extractelement (<vscale x 4 x i32> shufflevector (<vscale x 4 x i32> insertelement (<vscale x 4 x i32> undef, i32 1024, i32 0), <vscale x 4 x i32> undef, <vscale x 4 x i32> zeroinitializer), i32 -1)
40;
41  %in = insertelement <vscale x 4 x i32> undef, i32 1024, i32 0
42  %splat = shufflevector <vscale x 4 x i32> %in, <vscale x 4 x i32> undef, <vscale x 4 x i32> zeroinitializer
43  %r = extractelement <vscale x 4 x i32> %splat, i32 -1
44  ret i32 %r
45}
46