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1; RUN: opt -S -indvars < %s | FileCheck %s
2
3; Produced from the test-case:
4;
5; extern void foo(char *, unsigned , unsigned *);
6; extern void bar(int *, long);
7; extern char *processBuf(char *);
8;
9; extern unsigned theSize;
10;
11; void foo(char *buf, unsigned denominator, unsigned *flag) {
12;   int incr = (int) (theSize / denominator);
13;   int inx = 0;
14;   while (*flag) {
15;     int itmp = inx + incr;
16;     int i = (int) theSize;
17;     bar(&i, (long) itmp);
18;     buf = processBuf(buf);
19;     inx = itmp;
20;   }
21; }
22
23target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
24
25@theSize = external local_unnamed_addr global i32, align 4
26
27define void @foo(i8* %buf, i32 %denominator, i32* %flag) local_unnamed_addr {
28entry:
29  %i = alloca i32, align 4
30  %0 = load i32, i32* @theSize, align 4
31  %div = udiv i32 %0, %denominator
32  %1 = load i32, i32* %flag, align 4
33  %tobool5 = icmp eq i32 %1, 0
34  br i1 %tobool5, label %while.end, label %while.body.lr.ph
35
36while.body.lr.ph:                                 ; preds = %entry
37  %2 = bitcast i32* %i to i8*
38  br label %while.body
39
40while.body:                                       ; preds = %while.body.lr.ph, %while.body
41; Check that there are two PHIs followed by a 'sext' in the same block, and that
42; the test does not crash.
43; CHECK:        phi
44; CHECK-NEXT:   phi
45; CHECK-NEXT:   sext
46  %buf.addr.07 = phi i8* [ %buf, %while.body.lr.ph ], [ %call, %while.body ]
47  %inx.06 = phi i32 [ 0, %while.body.lr.ph ], [ %add, %while.body ]
48  %add = add nsw i32 %inx.06, %div
49  %3 = load i32, i32* @theSize, align 4
50  store i32 %3, i32* %i, align 4
51  %conv = sext i32 %add to i64
52  call void @bar(i32* nonnull %i, i64 %conv)
53  %call = call i8* @processBuf(i8* %buf.addr.07)
54  %4 = load i32, i32* %flag, align 4
55  %tobool = icmp eq i32 %4, 0
56  br i1 %tobool, label %while.end.loopexit, label %while.body
57
58while.end.loopexit:                               ; preds = %while.body
59  br label %while.end
60
61while.end:                                        ; preds = %while.end.loopexit, %entry
62  ret void
63}
64
65declare void @bar(i32*, i64) local_unnamed_addr
66declare i8* @processBuf(i8*) local_unnamed_addr
67