1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -S -instcombine < %s | FileCheck %s
3 ; Check that we don't crash on unreasonable constant indexes
5 define i32 @test_out_of_bounds(i32 %a, i1 %x, i1 %y) {
6 ; CHECK-LABEL: @test_out_of_bounds(
8 ; CHECK-NEXT: [[AND1:%.*]] = and i32 [[A:%.*]], 3
9 ; CHECK-NEXT: tail call void @llvm.assume(i1 poison)
10 ; CHECK-NEXT: ret i32 [[AND1]]
14 %B = lshr i32 %and1, -2147483648
15 %cmp = icmp eq i32 %B, 1
16 tail call void @llvm.assume(i1 %cmp)
20 define i128 @test_non64bit(i128 %a) {
21 ; CHECK-LABEL: @test_non64bit(
22 ; CHECK-NEXT: [[AND1:%.*]] = and i128 [[A:%.*]], 3
23 ; CHECK-NEXT: tail call void @llvm.assume(i1 poison)
24 ; CHECK-NEXT: ret i128 [[AND1]]
26 %and1 = and i128 %a, 3
27 %B = lshr i128 %and1, -1
28 %cmp = icmp eq i128 %B, 1
29 tail call void @llvm.assume(i1 %cmp)
33 declare void @llvm.assume(i1)
35 define <4 x double> @inselt_bad_index(<4 x double> %a) {
36 ; CHECK-LABEL: @inselt_bad_index(
37 ; CHECK-NEXT: ret <4 x double> poison
39 %I = insertelement <4 x double> %a, double 0.0, i64 4294967296