2 ; RUN: llc -mtriple=thumb-eabi -mcpu=swift -pre-RA-sched=source -join-globalcopies -enable-misched -verify-misched -debug-only=machine-scheduler -arm-atomic-cfg-tidy=0 %s -o - 2>&1 | FileCheck %s
4 ; Loop counter copies should be eliminated.
5 ; There is also a MUL here, but we don't care where it is scheduled.
7 ; CHECK: *** Final schedule for %bb.2 ***
12 define i32 @postinc(i32 %a, ptr nocapture %d, i32 %s) nounwind {
14 %cmp4 = icmp eq i32 %a, 0
15 br i1 %cmp4, label %for.end, label %for.body
17 for.body: ; preds = %entry, %for.body
18 %indvars.iv = phi i32 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
19 %s.05 = phi i32 [ %mul, %for.body ], [ 0, %entry ]
20 %indvars.iv.next = add i32 %indvars.iv, %s
21 %arrayidx = getelementptr inbounds i32, ptr %d, i32 %indvars.iv
22 %0 = load i32, ptr %arrayidx, align 4
23 %mul = mul nsw i32 %0, %s.05
24 %exitcond = icmp eq i32 %indvars.iv.next, %a
25 br i1 %exitcond, label %for.end, label %for.body
27 for.end: ; preds = %for.body, %entry
28 %s.0.lcssa = phi i32 [ 0, %entry ], [ %mul, %for.body ]
33 ; This case was a crasher in constrainLocalCopy.
34 ; The problem was the t2LDR_PRE defining both the global and local lrg.
35 ; CHECK-LABEL: *** Final schedule for %bb.5 ***
36 ; CHECK: %[[R4:[0-9]+]]:gpr, %[[R1:[0-9]+]]:gpr = t2LDR_PRE %[[R1]]
37 ; CHECK: %{{[0-9]+}}:gpr = COPY %[[R1]]
38 ; CHECK: %{{[0-9]+}}:gpr = COPY %[[R4]]
39 ; CHECK-LABEL: MACHINEINSTRS
40 %struct.rtx_def = type { [4 x i8], [1 x %union.rtunion_def] }
41 %union.rtunion_def = type { i64 }
43 ; Function Attrs: nounwind ssp
44 declare hidden fastcc void @df_ref_record(ptr nocapture, ptr, ptr, ptr, i32, i32) #0
46 ; Function Attrs: nounwind ssp
47 define hidden fastcc void @df_def_record_1(ptr nocapture %df, ptr %x, ptr %insn) #0 {
51 while.cond: ; preds = %if.end28, %entry
52 %loc.0 = phi ptr [ %rtx31, %if.end28 ], [ undef, %entry ]
53 %dst.0 = phi ptr [ %0, %if.end28 ], [ undef, %entry ]
54 switch i32 undef, label %if.end47 [
55 i32 61, label %if.then46
56 i32 64, label %if.then24
57 i32 132, label %if.end28
58 i32 133, label %if.end28
61 if.then24: ; preds = %while.cond
64 if.end28: ; preds = %if.then24, %while.cond, %while.cond
65 %dst.1 = phi ptr [ undef, %if.then24 ], [ %dst.0, %while.cond ], [ %dst.0, %while.cond ]
66 %arrayidx30 = getelementptr inbounds %struct.rtx_def, ptr %dst.1, i32 0, i32 1, i32 0
67 %rtx31 = bitcast ptr %arrayidx30 to ptr
68 %0 = load ptr, ptr %rtx31, align 4
71 if.then46: ; preds = %while.cond
72 tail call fastcc void @df_ref_record(ptr %df, ptr %dst.0, ptr %loc.0, ptr %insn, i32 0, i32 undef)
75 if.end47: ; preds = %while.cond
79 attributes #0 = { nounwind ssp }