xref: /aosp_15_r20/external/llvm/test/Analysis/ScalarEvolution/2009-04-22-TruncCast.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Worker; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'test1'
4*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: (trunc i{{.*}}ext
5*9880d681SAndroid Build Coastguard Worker
6*9880d681SAndroid Build Coastguard Workerdefine i16 @test1(i8 %x) {
7*9880d681SAndroid Build Coastguard Worker  %A = sext i8 %x to i32
8*9880d681SAndroid Build Coastguard Worker  %B = trunc i32 %A to i16
9*9880d681SAndroid Build Coastguard Worker  ret i16 %B
10*9880d681SAndroid Build Coastguard Worker}
11*9880d681SAndroid Build Coastguard Worker
12*9880d681SAndroid Build Coastguard Worker; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'test2'
13*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: (trunc i{{.*}}ext
14*9880d681SAndroid Build Coastguard Worker
15*9880d681SAndroid Build Coastguard Workerdefine i8 @test2(i16 %x) {
16*9880d681SAndroid Build Coastguard Worker  %A = sext i16 %x to i32
17*9880d681SAndroid Build Coastguard Worker  %B = trunc i32 %A to i8
18*9880d681SAndroid Build Coastguard Worker  ret i8 %B
19*9880d681SAndroid Build Coastguard Worker}
20*9880d681SAndroid Build Coastguard Worker
21*9880d681SAndroid Build Coastguard Worker; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'test3'
22*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: (trunc i{{.*}}ext
23*9880d681SAndroid Build Coastguard Worker
24*9880d681SAndroid Build Coastguard Workerdefine i16 @test3(i16 %x) {
25*9880d681SAndroid Build Coastguard Worker  %A = sext i16 %x to i32
26*9880d681SAndroid Build Coastguard Worker  %B = trunc i32 %A to i16
27*9880d681SAndroid Build Coastguard Worker  ret i16 %B
28*9880d681SAndroid Build Coastguard Worker}
29*9880d681SAndroid Build Coastguard Worker
30*9880d681SAndroid Build Coastguard Worker; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'test4'
31*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: (trunc i{{.*}}ext
32*9880d681SAndroid Build Coastguard Worker
33*9880d681SAndroid Build Coastguard Workerdefine i16 @test4(i8 %x) {
34*9880d681SAndroid Build Coastguard Worker  %A = zext i8 %x to i32
35*9880d681SAndroid Build Coastguard Worker  %B = trunc i32 %A to i16
36*9880d681SAndroid Build Coastguard Worker  ret i16 %B
37*9880d681SAndroid Build Coastguard Worker}
38*9880d681SAndroid Build Coastguard Worker
39*9880d681SAndroid Build Coastguard Worker; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'test5'
40*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: (trunc i{{.*}}ext
41*9880d681SAndroid Build Coastguard Worker
42*9880d681SAndroid Build Coastguard Workerdefine i8 @test5(i16 %x) {
43*9880d681SAndroid Build Coastguard Worker  %A = zext i16 %x to i32
44*9880d681SAndroid Build Coastguard Worker  %B = trunc i32 %A to i8
45*9880d681SAndroid Build Coastguard Worker  ret i8 %B
46*9880d681SAndroid Build Coastguard Worker}
47*9880d681SAndroid Build Coastguard Worker
48*9880d681SAndroid Build Coastguard Worker; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'test6'
49*9880d681SAndroid Build Coastguard Worker; CHECK-NOT: (trunc i{{.*}}ext
50*9880d681SAndroid Build Coastguard Worker
51*9880d681SAndroid Build Coastguard Workerdefine i16 @test6(i16 %x) {
52*9880d681SAndroid Build Coastguard Worker  %A = zext i16 %x to i32
53*9880d681SAndroid Build Coastguard Worker  %B = trunc i32 %A to i16
54*9880d681SAndroid Build Coastguard Worker  ret i16 %B
55*9880d681SAndroid Build Coastguard Worker}
56