test/CodeGen/Thumb/thumb-memcpy-ldm-stm.ll

; RUN: llc -mtriple=thumbv6m-eabi -verify-machineinstrs %s -o - | FileCheck %s
@d = external global [64 x i32]
@s = external global [64 x i32]

; Function Attrs: nounwind
define void @t1() #0 {
entry:
; CHECK-LABEL: t1:
; CHECK: ldr r[[LB:[0-9]]],
; CHECK-NEXT: ldm r[[LB]]!,
; CHECK-NEXT: ldr r[[SB:[0-9]]],
; CHECK-NEXT: stm r[[SB]]!,
; CHECK-NEXT: ldrb {{.*}}, [r[[LB]]]
; CHECK-NEXT: strb {{.*}}, [r[[SB]]]
    tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* bitcast ([64 x i32]* @s to i8*), i8* bitcast ([64 x i32]* @d to i8*), i32 17, i32 4, i1 false)
    ret void
}

; Function Attrs: nounwind
define void @t2() #0 {
entry:
; CHECK-LABEL: t2:
; CHECK: ldr r[[LB:[0-9]]],
; CHECK-NEXT: ldm r[[LB]]!,
; CHECK-NEXT: ldr r[[SB:[0-9]]],
; CHECK-NEXT: stm r[[SB]]!,
; CHECK-NEXT: ldrh {{.*}}, [r[[LB]]]
; CHECK-NEXT: ldrb {{.*}}, [r[[LB]], #2]
; CHECK-NEXT: strb {{.*}}, [r[[SB]], #2]
; CHECK-NEXT: strh {{.*}}, [r[[SB]]]
    tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* bitcast ([64 x i32]* @s to i8*), i8* bitcast ([64 x i32]* @d to i8*), i32 15, i32 4, i1 false)
    ret void
}

; Function Attrs: nounwind
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i32, i1) #1