1 ; RUN: llc < %s -enable-early-ifcvt -stress-early-ifcvt | FileCheck %s
2 target triple = "x86_64-apple-macosx10.8.0"
5 define i32 @mm2(i32* nocapture %p, i32 %n) nounwind uwtable readonly ssp {
10 ; Loop body has no branches before the backedge.
13 %max.0 = phi i32 [ 0, %entry ], [ %max.1, %do.cond ]
14 %min.0 = phi i32 [ 0, %entry ], [ %min.1, %do.cond ]
15 %n.addr.0 = phi i32 [ %n, %entry ], [ %dec, %do.cond ]
16 %p.addr.0 = phi i32* [ %p, %entry ], [ %incdec.ptr, %do.cond ]
17 %incdec.ptr = getelementptr inbounds i32* %p.addr.0, i64 1
18 %0 = load i32* %p.addr.0, align 4
19 %cmp = icmp sgt i32 %0, %max.0
20 br i1 %cmp, label %do.cond, label %if.else
23 %cmp1 = icmp slt i32 %0, %min.0
24 %.min.0 = select i1 %cmp1, i32 %0, i32 %min.0
28 %max.1 = phi i32 [ %0, %do.body ], [ %max.0, %if.else ]
29 %min.1 = phi i32 [ %min.0, %do.body ], [ %.min.0, %if.else ]
32 %dec = add i32 %n.addr.0, -1
33 %tobool = icmp eq i32 %dec, 0
34 br i1 %tobool, label %do.end, label %do.body
37 %sub = sub nsw i32 %max.1, %min.1
42 ; Deal with alternative tail predecessors
50 define void @multipreds(i32 %sw) nounwind uwtable ssp {
52 switch i32 %sw, label %if.then29 [
53 i32 0, label %if.then37
54 i32 127, label %if.end41
64 %exit_status.0 = phi i32 [ 2, %if.then29 ], [ 0, %if.then37 ], [ 66, %entry ]
65 call void (...)* @fprintf(i32 %exit_status.0) nounwind
69 declare void @fprintf(...) nounwind