1; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
2;
3; PR18396: Assertion: MO->isDead "Cannot fold physreg def".
4; InlineSpiller::foldMemoryOperand needs to handle undef call operands.
5
6target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
7
8@a = external global i32**, align 8
9@b = external global i32, align 4
10
11; Check that the call targets are folded, and we don't crash!
12; CHECK-LABEL: foldCallOper:
13; CHECK: callq *{{.*}}(%rbp)
14; CHECK: callq *{{.*}}(%rbp)
15define void @foldCallOper(i32 (i32*, i32, i32**)* nocapture %p1) #0 {
16entry:
17  %0 = load i32*** @a, align 8
18  br label %for.body.i
19
20for.body.i:                                       ; preds = %for.body.i, %entry
21  %exitcond5.i = icmp eq i32 undef, undef
22  br i1 %exitcond5.i, label %for.body3.lr.ph.i, label %for.body.i
23
24for.body3.lr.ph.i:                                ; preds = %for.body.i
25  %call.i = tail call i32 %p1(i32* undef, i32 0, i32** null)
26  %tobool.i = icmp eq i32 %call.i, 0
27  br label %for.body3.i
28
29for.body3.i:                                      ; preds = %for.inc8.i, %for.body3.lr.ph.i
30  %1 = phi i32* [ undef, %for.body3.lr.ph.i ], [ %.pre.i, %for.inc8.i ]
31  %indvars.iv.i = phi i64 [ 1, %for.body3.lr.ph.i ], [ %phitmp.i, %for.inc8.i ]
32  %call5.i = tail call i32 %p1(i32* %1, i32 0, i32** %0)
33  br i1 %tobool.i, label %for.inc8.i, label %if.then.i
34
35if.then.i:                                        ; preds = %for.body3.i
36  %2 = load i32* %1, align 4
37  store i32 %2, i32* @b, align 4
38  br label %for.inc8.i
39
40for.inc8.i:                                       ; preds = %if.then.i, %for.body3.i
41  %lftr.wideiv.i = trunc i64 %indvars.iv.i to i32
42  %arrayidx4.phi.trans.insert.i = getelementptr inbounds [0 x i32*]* undef, i64 0, i64 %indvars.iv.i
43  %.pre.i = load i32** %arrayidx4.phi.trans.insert.i, align 8
44  %phitmp.i = add i64 %indvars.iv.i, 1
45  br label %for.body3.i
46}
47
48attributes #0 = { noreturn uwtable "no-frame-pointer-elim"="true" }
49