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
|
; RUN: llc < %s -O0 -mtriple=x86_64-apple-darwin10 | FileCheck %s
; Test if we do not fold the cmp into select if the instructions are in
; different basic blocks.
define i32 @select_cmp_cmov_i32(i32 %a, i32 %b) {
; CHECK-LABEL: select_cmp_cmov_i32
; CHECK-LABEL: continue
; CHECK-NOT: cmp
%1 = icmp ult i32 %a, %b
br i1 %1, label %continue, label %exit
continue:
%2 = select i1 %1, i32 %a, i32 %b
ret i32 %2
exit:
ret i32 -1
}
define float @select_fcmp_oeq_f32(float %a, float %b, float %c, float %d) {
; CHECK-LABEL: select_fcmp_oeq_f32
; CHECK-LABEL: continue
; CHECK-NOT: cmp
%1 = fcmp oeq float %a, %b
br i1 %1, label %continue, label %exit
continue:
%2 = select i1 %1, float %c, float %d
ret float %2
exit:
ret float -1.0
}
define float @select_fcmp_one_f32(float %a, float %b, float %c, float %d) {
; CHECK-LABEL: select_fcmp_one_f32
; CHECK-LABEL: continue
; CHECK-NOT: ucomi
%1 = fcmp one float %a, %b
br i1 %1, label %continue, label %exit
continue:
%2 = select i1 %1, float %c, float %d
ret float %2
exit:
ret float -1.0
}
|
