reference, declaration → definition
definition → references, declarations, derived classes, virtual overrides
reference to multiple definitions → definitions
unreferenced

    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
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95
   96
   97
   98
   99
  100
  101
  102
  103
  104
  105
  106
  107
  108
  109

; RUN: llc -mtriple=thumbv7m-linux-gnu < %s | FileCheck %s --check-prefix=CHECK --check-prefix=T2
; RUN: llc -mtriple=thumbv6m-linux-gnu < %s | FileCheck %s --check-prefix=CHECK --check-prefix=T1

; CHECK-LABEL: single_bit:
; CHECK: lsls r0, r0, #23
; T2-NEXT: mov
; T2-NEXT: it
; T1-NEXT: bmi
define i32 @single_bit(i32 %p) {
  %a = and i32 %p, 256
  %b = icmp eq i32 %a, 0
  br i1 %b, label %true, label %false

true:
  ret i32 1

false:
  ret i32 2
}

; CHECK-LABEL: single_bit_multi_use:
; CHECK: lsls r0, r0, #23
; T2-NEXT: mov
; T2-NEXT: it
; T1-NEXT: bmi
define i32 @single_bit_multi_use(i32 %p, i32* %z) {
  store i32 %p, i32* %z
  %a = and i32 %p, 256
  %b = icmp eq i32 %a, 0
  br i1 %b, label %true, label %false

true:
  ret i32 1

false:
  ret i32 2
}

; CHECK-LABEL: multi_bit_lsb_ubfx:
; CHECK: lsls r0, r0, #24
; T2-NEXT: mov
; T2-NEXT: it
; T1-NEXT: beq
define i32 @multi_bit_lsb_ubfx(i32 %p) {
  %a = and i32 %p, 255
  %b = icmp eq i32 %a, 0
  br i1 %b, label %true, label %false

true:
  ret i32 1

false:
  ret i32 2
}

; CHECK-LABEL: multi_bit_msb:
; CHECK: lsrs r0, r0, #24
; T2-NEXT: mov
; T2-NEXT: it
; T1-NEXT: beq
define i32 @multi_bit_msb(i32 %p) {
  %a = and i32 %p, 4278190080  ; 0xff000000
  %b = icmp eq i32 %a, 0
  br i1 %b, label %true, label %false

true:
  ret i32 1

false:
  ret i32 2
}

; CHECK-LABEL: multi_bit_nosb:
; T1: lsls r0, r0, #8
; T1-NEXT: lsrs r0, r0, #24
; T2: tst.w
; T2-NEXT: it
; T1-NEXT: beq
define i32 @multi_bit_nosb(i32 %p) {
  %a = and i32 %p, 16711680 ; 0x00ff0000
  %b = icmp eq i32 %a, 0
  br i1 %b, label %true, label %false

true:
  ret i32 1

false:
  ret i32 2
}

; CHECK-LABEL: i16_cmpz:
; T1:      uxth    r0, r0
; T1-NEXT: lsrs    r0, r0, #9
; T1-NEXT: bne
; T2:      uxth    r0, r0
; T2-NEXT: movs    r2, #0
; T2-NEXT: cmp.w   r2, r0, lsr #9
define void @i16_cmpz(i16 %x, void (i32)* %foo) {
entry:
  %cmp = icmp ult i16 %x, 512
  br i1 %cmp, label %if.then, label %if.end

if.then:                                          ; preds = %entry
  tail call void %foo(i32 0) #1
  br label %if.end

if.end:                                           ; preds = %if.then, %entry
  ret void
}