test/Transforms/GlobalOpt/integer-bool.ll


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

; RUN: opt < %s -S -globalopt -instcombine | FileCheck %s
;; check that global opt turns integers that only hold 0 or 1 into bools.

@G = internal addrspace(1) global i32 0
; CHECK: @G
; CHECK: addrspace(1)
; CHECK: global i1 false

define void @set1() {
  store i32 0, i32 addrspace(1)* @G
; CHECK: store i1 false
  ret void
}

define void @set2() {
  store i32 1, i32 addrspace(1)* @G
; CHECK: store i1 true
  ret void
}

define i1 @get() {
; CHECK-LABEL: @get(
  %A = load i32 addrspace(1) * @G
  %C = icmp slt i32 %A, 2
  ret i1 %C
; CHECK: ret i1 true
}