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      1 ; RUN: llc < %s | FileCheck %s
      2 
      3 target datalayout = "e-m:e-p:32:32-i1:8:32-i8:8:32-i16:16:32-f64:32:64-v64:32:64-v128:32:128-a:0:32-n32-S32"
      4 target triple = "thumbv7m--linux-gnu"
      5 
      6 ; CHECK-LABEL: f:
      7 ; CHECK: ldm	r{{[0-9]}}!, {r[[x:[0-9]]]}
      8 ; CHECK: add.w	r[[x]], r[[x]], #3
      9 ; CHECK: stm	r{{[0-9]}}!, {r[[x]]}
     10 define void @f(i32 %n, i32* nocapture %a, i32* nocapture readonly %b) optsize minsize {
     11   %1 = icmp sgt i32 %n, 0
     12   br i1 %1, label %.lr.ph, label %._crit_edge
     13 
     14 .lr.ph:                                           ; preds = %.lr.ph, %0
     15   %i.04 = phi i32 [ %6, %.lr.ph ], [ 0, %0 ]
     16   %.03 = phi i32* [ %2, %.lr.ph ], [ %b, %0 ]
     17   %.012 = phi i32* [ %5, %.lr.ph ], [ %a, %0 ]
     18   %2 = getelementptr inbounds i32, i32* %.03, i32 1
     19   %3 = load i32, i32* %.03, align 4
     20   %4 = add nsw i32 %3, 3
     21   %5 = getelementptr inbounds i32, i32* %.012, i32 1
     22   store i32 %4, i32* %.012, align 4
     23   %6 = add nsw i32 %i.04, 1
     24   %exitcond = icmp eq i32 %6, %n
     25   br i1 %exitcond, label %._crit_edge, label %.lr.ph
     26 
     27 ._crit_edge:                                      ; preds = %.lr.ph, %0
     28   ret void
     29 }
     30 
     31 ; CHECK-LABEL: f_nominsize:
     32 ; CHECK-NOT: ldm
     33 define void @f_nominsize(i32 %n, i32* nocapture %a, i32* nocapture readonly %b) optsize {
     34   %1 = icmp sgt i32 %n, 0
     35   br i1 %1, label %.lr.ph, label %._crit_edge
     36 
     37 .lr.ph:                                           ; preds = %.lr.ph, %0
     38   %i.04 = phi i32 [ %6, %.lr.ph ], [ 0, %0 ]
     39   %.03 = phi i32* [ %2, %.lr.ph ], [ %b, %0 ]
     40   %.012 = phi i32* [ %5, %.lr.ph ], [ %a, %0 ]
     41   %2 = getelementptr inbounds i32, i32* %.03, i32 1
     42   %3 = load i32, i32* %.03, align 4
     43   %4 = add nsw i32 %3, 3
     44   %5 = getelementptr inbounds i32, i32* %.012, i32 1
     45   store i32 %4, i32* %.012, align 4
     46   %6 = add nsw i32 %i.04, 1
     47   %exitcond = icmp eq i32 %6, %n
     48   br i1 %exitcond, label %._crit_edge, label %.lr.ph
     49 
     50 ._crit_edge:                                      ; preds = %.lr.ph, %0
     51   ret void
     52 }
     53