Fix line spacing for push instructions in ARM assembly.

tests_lit/assembler/arm32/push-pop.ll

 ; Show that we know how to translate push and pop.
 ; TODO(kschimpf) Translate pop instructions.
 
 ; NOTE: We use -O2 to get rid of memory stores.
 
 ; REQUIRES: allow_dump
 
 ; Compile using standalone assembler.
 ; RUN: %p2i --filetype=asm -i %s --target=arm32 --args -O2 -allow-extern \
 ; RUN:   | FileCheck %s --check-prefix=ASM
@@ skipping 13 matching lines @@
 declare external void @DoSomething()
 
 define internal void @SinglePushPop() {
   call void @DoSomething();
   ret void       
 }
 
 ; ASM-LABEL:SinglePushPop:
 ; ASM-NEXT:.LSinglePushPop$__0:
 ; ASM-NEXT:    push    {lr}
-; ASM:         sub     sp, sp, #12
+; ASM-NEXT:    sub     sp, sp, #12
 ; ASM-NEXT:    bl      DoSomething
-; ASM:         add     sp, sp, #12
+; ASM-NEXT:    add     sp, sp, #12
 ; ASM-NEXT:    pop     {lr}
-; ASM:         bx      lr
+; ASM-NEXT:     # lr = def.pseudo 
+; ASM-NEXT:    bx      lr
 
 ; DIS-LABEL:00000000 <SinglePushPop>:
 ; DIS-NEXT:   0:        e52de004
 ; DIS-NEXT:   4:        e24dd00c
 ; DIS-NEXT:   8:        ebfffffe
 ; DIS-NEXT:   c:        e28dd00c
 ; DIS-NEXT:  10:        e49de004
 ; DIS-NEXT:  14:        e12fff1e
 
 ; IASM-LABEL:SinglePushPop:
@@ skipping 30 matching lines @@
 ; prolog/epilog.
 define internal i32 @MultPushPop(i32 %v1, i32 %v2) {
   call void @DoSomething();
   %v3 = add i32 %v1, %v2
   ret i32 %v3
 }
 
 ; ASM-LABEL:MultPushPop:
 ; ASM-NEXT:.LMultPushPop$__0:
 ; ASM-NEXT:     push    {r4, r5, lr}
-; ASM:          sub     sp, sp, #4
+; ASM-NEXT:     sub     sp, sp, #4
 ; ASM-NEXT:     mov     r4, r0
 ; ASM-NEXT:     mov     r5, r1
 ; ASM-NEXT:     bl      DoSomething
-; ASM:          add     r4, r4, r5
+; ASM-NEXT:     add     r4, r4, r5
 ; ASM-NEXT:     mov     r0, r4
 ; ASM-NEXT:     add     sp, sp, #4
 ; ASM-NEXT:     pop     {r4, r5, lr}
-; ASM:          bx      lr
+; ASM-NEXT:     # r4 = def.pseudo 
+; ASM-NEXT:     # r5 = def.pseudo 
+; ASM-NEXT:     # lr = def.pseudo 
+; ASM-NEXT:     bx      lr
 
 ; DIS-LABEL:00000020 <MultPushPop>:
 ; DIS-NEXT:  20:        e92d4030
 ; DIS-NEXT:  24:        e24dd004
 ; DIS-NEXT:  28:        e1a04000
 ; DIS-NEXT:  2c:        e1a05001
 ; DIS-NEXT:  30:        ebfffffe
 ; DIS-NEXT:  34:        e0844005
 ; DIS-NEXT:  38:        e1a00004
 ; DIS-NEXT:  3c:        e28dd004
@@ skipping 40 matching lines @@
 
 ; IASM-NEXT:    .byte 0x30
 ; IASM-NEXT:    .byte 0x40
 ; IASM-NEXT:    .byte 0xbd
 ; IASM-NEXT:    .byte 0xe8
 
 ; IASM:         .byte 0x1e
 ; IASM-NEXT:    .byte 0xff
 ; IASM-NEXT:    .byte 0x2f
 ; IASM-NEXT:    .byte 0xe1