summaryrefslogtreecommitdiff
path: root/test/Analysis/ScalarEvolution/2009-04-22-TruncCast.ll
blob: ebd9f7377d0c95d871e1d8186344bd520251f317 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
; RUN: opt < %s -analyze -scalar-evolution | grep "(trunc i" | not grep ext

define i16 @test1(i8 %x) {
  %A = sext i8 %x to i32
  %B = trunc i32 %A to i16
  ret i16 %B
}

define i8 @test2(i16 %x) {
  %A = sext i16 %x to i32
  %B = trunc i32 %A to i8
  ret i8 %B
}

define i16 @test3(i16 %x) {
  %A = sext i16 %x to i32
  %B = trunc i32 %A to i16
  ret i16 %B
}

define i16 @test4(i8 %x) {
  %A = zext i8 %x to i32
  %B = trunc i32 %A to i16
  ret i16 %B
}

define i8 @test5(i16 %x) {
  %A = zext i16 %x to i32
  %B = trunc i32 %A to i8
  ret i8 %B
}

define i16 @test6(i16 %x) {
  %A = zext i16 %x to i32
  %B = trunc i32 %A to i16
  ret i16 %B
}