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1; RUN: opt < %s -analyze -scalar-evolution | grep {(trunc i} | not grep ext
2
3define i16 @test1(i8 %x) {
4  %A = sext i8 %x to i32
5  %B = trunc i32 %A to i16
6  ret i16 %B
7}
8
9define i8 @test2(i16 %x) {
10  %A = sext i16 %x to i32
11  %B = trunc i32 %A to i8
12  ret i8 %B
13}
14
15define i16 @test3(i16 %x) {
16  %A = sext i16 %x to i32
17  %B = trunc i32 %A to i16
18  ret i16 %B
19}
20
21define i16 @test4(i8 %x) {
22  %A = zext i8 %x to i32
23  %B = trunc i32 %A to i16
24  ret i16 %B
25}
26
27define i8 @test5(i16 %x) {
28  %A = zext i16 %x to i32
29  %B = trunc i32 %A to i8
30  ret i8 %B
31}
32
33define i16 @test6(i16 %x) {
34  %A = zext i16 %x to i32
35  %B = trunc i32 %A to i16
36  ret i16 %B
37}
38