and-and-cond.ll
675 Bytes
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 -jump-threading -mem2reg -instcombine -simplifycfg -S | FileCheck %s
declare i32 @f1()
declare i32 @f2()
declare void @f3()
define i32 @test(i1 %cond, i1 %cond2, i1 %cond3) {
; CHECK: test
br i1 %cond, label %T1, label %F1
; CHECK-NOT: T1:
T1:
%v1 = call i32 @f1()
br label %Merge
F1:
%v2 = call i32 @f2()
br label %Merge
Merge:
; CHECK: Merge:
; CHECK: %v1 = call i32 @f1()
; CHECK-NEXT: %D = and i1 %cond2, %cond3
; CHECK-NEXT: br i1 %D
%A = phi i1 [true, %T1], [false, %F1]
%B = phi i32 [%v1, %T1], [%v2, %F1]
%C = and i1 %A, %cond2
%D = and i1 %C, %cond3
br i1 %D, label %T2, label %F2
T2:
call void @f3()
ret i32 %B
F2:
ret i32 %B
}