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
|
; RUN: opt -S -instsimplify < %s | FileCheck %s
define i1 @test0(i8* %ptr) {
; CHECK-LABEL: @test0(
entry:
%val = load i8, i8* %ptr, !range !{i8 -50, i8 0}
%and = and i8 %val, 128
%is.eq = icmp eq i8 %and, 128
ret i1 %is.eq
; CHECK: ret i1 true
}
define i1 @test1(i8* %ptr) {
; CHECK-LABEL: @test1(
entry:
%val = load i8, i8* %ptr, !range !{i8 64, i8 128}
%and = and i8 %val, 64
%is.eq = icmp eq i8 %and, 64
ret i1 %is.eq
; CHECK: ret i1 true
}
define i1 @test2(i8* %ptr) {
; CHECK-LABEL: @test2(
entry:
; CHECK: load
; CHECK: and
; CHECK: icmp eq
; CHECK: ret
%val = load i8, i8* %ptr, !range !{i8 64, i8 129}
%and = and i8 %val, 64
%is.eq = icmp eq i8 %and, 64
ret i1 %is.eq
}
|
