llvm/test/Transforms/StructurizeCFG/switch.ll


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

; RUN: opt -S -passes='lower-switch,structurizecfg' %s -o - | FileCheck %s

; The structurizecfg pass cannot handle switch instructions, so we need to
; make sure the lower switch pass is always run before structurizecfg.

; CHECK-LABEL: @switch
define void @switch(ptr addrspace(1) %out, i32 %cond) nounwind {
entry:
; CHECK: icmp
  switch i32 %cond, label %done [ i32 0, label %zero]

; CHECK: zero:
zero:
; CHECK: store i32 7, ptr addrspace(1) %out
  store i32 7, ptr addrspace(1) %out
; CHECK: br label %done
  br label %done

; CHECK: done:
done:
; CHECK: ret void
  ret void
}