1; RUN: llc < %s -verify-machineinstrs -mtriple=i386-apple-darwin -mcpu=corei7 | FileCheck %s
2; rdar://5571034
3
4; This requires physreg joining, %13 is live everywhere:
5; 304L		%cl = COPY %13:sub_8bit; GR32_ABCD:%13
6; 320L		%15 = COPY %19; GR32:%15 GR32_NOSP:%19
7; 336L		%15 = SAR32rCL %15, implicit dead %eflags, implicit killed %cl; GR32:%15
8
9define void @foo(i32* nocapture %quadrant, i32* nocapture %ptr, i32 %bbSize, i32 %bbStart, i32 %shifts) nounwind ssp {
10; CHECK-LABEL: foo:
11entry:
12  %j.03 = add i32 %bbSize, -1                     ; <i32> [#uses=2]
13  %0 = icmp sgt i32 %j.03, -1                     ; <i1> [#uses=1]
14  br i1 %0, label %bb.nph, label %return
15
16bb.nph:                                           ; preds = %entry
17  %tmp9 = add i32 %bbStart, %bbSize               ; <i32> [#uses=1]
18  %tmp10 = add i32 %tmp9, -1                      ; <i32> [#uses=1]
19  br label %bb
20
21bb:                                               ; preds = %bb, %bb.nph
22; CHECK: %bb
23; CHECK-NOT: movb {{.*}}l, %cl
24; CHECK: sarl %cl
25  %indvar = phi i32 [ 0, %bb.nph ], [ %indvar.next, %bb ] ; <i32> [#uses=3]
26  %j.06 = sub i32 %j.03, %indvar                  ; <i32> [#uses=1]
27  %tmp11 = sub i32 %tmp10, %indvar                ; <i32> [#uses=1]
28  %scevgep = getelementptr i32, i32* %ptr, i32 %tmp11  ; <i32*> [#uses=1]
29  %1 = load i32, i32* %scevgep, align 4                ; <i32> [#uses=1]
30  %2 = ashr i32 %j.06, %shifts                    ; <i32> [#uses=1]
31  %3 = and i32 %2, 65535                          ; <i32> [#uses=1]
32  %4 = getelementptr inbounds i32, i32* %quadrant, i32 %1 ; <i32*> [#uses=1]
33  store i32 %3, i32* %4, align 4
34  %indvar.next = add i32 %indvar, 1               ; <i32> [#uses=2]
35  %exitcond = icmp eq i32 %indvar.next, %bbSize   ; <i1> [#uses=1]
36  br i1 %exitcond, label %return, label %bb
37
38return:                                           ; preds = %bb, %entry
39  ret void
40}
41