xref: /aosp_15_r20/external/llvm/test/Transforms/IndVarSimplify/zext-nuw.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)
1*9880d681SAndroid Build Coastguard Worker; RUN: opt -indvars -S %s | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Worker%struct.A = type { i8 }
4*9880d681SAndroid Build Coastguard Worker
5*9880d681SAndroid Build Coastguard Worker@c = global %struct.A* null
6*9880d681SAndroid Build Coastguard Worker@d = global i32 4
7*9880d681SAndroid Build Coastguard Worker
8*9880d681SAndroid Build Coastguard Workerdefine void @_Z3fn1v() {
9*9880d681SAndroid Build Coastguard Worker  %x2 = load i32, i32* @d
10*9880d681SAndroid Build Coastguard Worker  %x3 = icmp slt i32 %x2, 1
11*9880d681SAndroid Build Coastguard Worker  %x4 = select i1 %x3, i32 1, i32 %x2
12*9880d681SAndroid Build Coastguard Worker  %x5 = load %struct.A*, %struct.A** @c
13*9880d681SAndroid Build Coastguard Worker  %j.sroa.0.0..sroa_idx = getelementptr %struct.A, %struct.A* %x5, i64 0, i32 0
14*9880d681SAndroid Build Coastguard Worker  %j.sroa.0.0.copyload = load i8, i8* %j.sroa.0.0..sroa_idx
15*9880d681SAndroid Build Coastguard Worker  br label %.preheader4.lr.ph
16*9880d681SAndroid Build Coastguard Worker
17*9880d681SAndroid Build Coastguard Worker.preheader4.lr.ph:                                ; preds = %0
18*9880d681SAndroid Build Coastguard Worker  ; CHECK-NOT: add i64 {{.*}}, 4294967296
19*9880d681SAndroid Build Coastguard Worker  br label %.preheader4
20*9880d681SAndroid Build Coastguard Worker
21*9880d681SAndroid Build Coastguard Worker.preheader4:                                      ; preds = %x22, %.preheader4.lr.ph
22*9880d681SAndroid Build Coastguard Worker  %k.09 = phi i8* [ undef, %.preheader4.lr.ph ], [ %x25, %x22 ]
23*9880d681SAndroid Build Coastguard Worker  %x8 = icmp ult i32 0, 4
24*9880d681SAndroid Build Coastguard Worker  br i1 %x8, label %.preheader.lr.ph, label %x22
25*9880d681SAndroid Build Coastguard Worker
26*9880d681SAndroid Build Coastguard Worker.preheader.lr.ph:                                 ; preds = %.preheader4
27*9880d681SAndroid Build Coastguard Worker  br label %.preheader
28*9880d681SAndroid Build Coastguard Worker
29*9880d681SAndroid Build Coastguard Worker.preheader:                                       ; preds = %x17, %.preheader.lr.ph
30*9880d681SAndroid Build Coastguard Worker  %k.17 = phi i8* [ %k.09, %.preheader.lr.ph ], [ %x19, %x17 ]
31*9880d681SAndroid Build Coastguard Worker  %v.06 = phi i32 [ 0, %.preheader.lr.ph ], [ %x20, %x17 ]
32*9880d681SAndroid Build Coastguard Worker  br label %x17
33*9880d681SAndroid Build Coastguard Worker
34*9880d681SAndroid Build Coastguard Workerx17:                                              ; preds = %.preheader
35*9880d681SAndroid Build Coastguard Worker  %x18 = sext i8 %j.sroa.0.0.copyload to i64
36*9880d681SAndroid Build Coastguard Worker  %x19 = getelementptr i8, i8* %k.17, i64 %x18
37*9880d681SAndroid Build Coastguard Worker  %x20 = add i32 %v.06, 1
38*9880d681SAndroid Build Coastguard Worker  %x21 = icmp ult i32 %x20, %x4
39*9880d681SAndroid Build Coastguard Worker  br i1 %x21, label %.preheader, label %._crit_edge.8
40*9880d681SAndroid Build Coastguard Worker
41*9880d681SAndroid Build Coastguard Worker._crit_edge.8:                                    ; preds = %x17
42*9880d681SAndroid Build Coastguard Worker  %split = phi i8* [ %x19, %x17 ]
43*9880d681SAndroid Build Coastguard Worker  br label %x22
44*9880d681SAndroid Build Coastguard Worker
45*9880d681SAndroid Build Coastguard Workerx22:                                              ; preds = %._crit_edge.8, %.preheader4
46*9880d681SAndroid Build Coastguard Worker  %k.1.lcssa = phi i8* [ %split, %._crit_edge.8 ], [ %k.09, %.preheader4 ]
47*9880d681SAndroid Build Coastguard Worker  %x25 = getelementptr i8, i8* %k.1.lcssa
48*9880d681SAndroid Build Coastguard Worker  br label %.preheader4
49*9880d681SAndroid Build Coastguard Worker}
50