| James Molloy | 53298a1 | 2016-06-07 12:13:34 +0000 | [diff] [blame] | 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 | } |