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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
; An integer truncation to i1 should be done with an and instruction to make
; sure only the LSBit survives. Test that this is the case both for a returned
; value and as the operand of a branch.
; RUN: llvm-as < %s | llc -march=x86 | grep {\\(and\\)\\|\\(test.*\\\$1\\)} | \
; RUN: count 5
define i1 @test1(i32 %X) zeroext {
%Y = trunc i32 %X to i1
ret i1 %Y
}
define i1 @test2(i32 %val, i32 %mask) {
entry:
%shifted = ashr i32 %val, %mask
%anded = and i32 %shifted, 1
%trunced = trunc i32 %anded to i1
br i1 %trunced, label %ret_true, label %ret_false
ret_true:
ret i1 true
ret_false:
ret i1 false
}
define i32 @test3(i8* %ptr) {
%val = load i8* %ptr
%tmp = trunc i8 %val to i1
br i1 %tmp, label %cond_true, label %cond_false
cond_true:
ret i32 21
cond_false:
ret i32 42
}
define i32 @test4(i8* %ptr) {
%tmp = ptrtoint i8* %ptr to i1
br i1 %tmp, label %cond_true, label %cond_false
cond_true:
ret i32 21
cond_false:
ret i32 42
}
define i32 @test6(double %d) {
%tmp = fptosi double %d to i1
br i1 %tmp, label %cond_true, label %cond_false
cond_true:
ret i32 21
cond_false:
ret i32 42
}
|
