llvm-mirror/test/CodeGen/ARM/bfi.ll

; RUN: llc -march=arm -mattr=+v6t2 < %s | FileCheck %s

%struct.F = type { [3 x i8], i8 }

@X = common global %struct.F zeroinitializer, align 4 ; <%struct.F*> [#uses=1]

define void @f1([1 x i32] %f.coerce0) nounwind {
entry:
; CHECK: f1
; CHECK: mov r2, #10
; CHECK: bfi r1, r2, #22, #4
  %0 = load i32* bitcast (%struct.F* @X to i32*), align 4 ; <i32> [#uses=1]
  %1 = and i32 %0, -62914561                      ; <i32> [#uses=1]
  %2 = or i32 %1, 41943040                        ; <i32> [#uses=1]
  store i32 %2, i32* bitcast (%struct.F* @X to i32*), align 4
  ret void
}

define i32 @f2(i32 %A, i32 %B) nounwind {
entry:
; CHECK: f2
; CHECK: lsr{{.*}}#7
; CHECK: bfi r0, r1, #7, #16
  %and = and i32 %A, -8388481                     ; <i32> [#uses=1]
  %and2 = and i32 %B, 8388480                     ; <i32> [#uses=1]
  %or = or i32 %and2, %and                        ; <i32> [#uses=1]
  ret i32 %or
}

define i32 @f3(i32 %A, i32 %B) nounwind {
entry:
; CHECK: f3
; CHECK: lsr{{.*}} #7
; CHECK: bfi {{.*}}, #7, #16
  %and = and i32 %A, 8388480                      ; <i32> [#uses=1]
  %and2 = and i32 %B, -8388481                    ; <i32> [#uses=1]
  %or = or i32 %and2, %and                        ; <i32> [#uses=1]
  ret i32 %or
}

; rdar://8752056
define i32 @f4(i32 %a) nounwind {
; CHECK: f4
; CHECK: movw [[R1:r[0-9]+]], #3137
; CHECK: bfi [[R1]], {{r[0-9]+}}, #15, #5
  %1 = shl i32 %a, 15
  %ins7 = and i32 %1, 1015808
  %ins12 = or i32 %ins7, 3137
  ret i32 %ins12
}

; rdar://8458663
define i32 @f5(i32 %a, i32 %b) nounwind {
entry:
; CHECK: f5:
; CHECK-NOT: bfc
; CHECK: bfi r0, r1, #20, #4
  %0 = and i32 %a, -15728641
  %1 = shl i32 %b, 20
  %2 = and i32 %1, 15728640
  %3 = or i32 %2, %0
  ret i32 %3
}

; rdar://9609030
define i32 @f6(i32 %a, i32 %b) nounwind readnone {
entry:
; CHECK: f6:
; CHECK-NOT: bic
; CHECK: bfi r0, r1, #8, #9
  %and = and i32 %a, -130817
  %and2 = shl i32 %b, 8
  %shl = and i32 %and2, 130816
  %or = or i32 %shl, %and
  ret i32 %or
}