1; RUN: llc < %s -asm-verbose=false -verify-machineinstrs | FileCheck %s
2
3; Check that unused vregs aren't assigned registers.
4
5target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
6target triple = "wasm32-unknown-unknown"
7
8define void @foo(i32* nocapture %a, i32 %w, i32 %h) {
9; CHECK-LABEL: foo:
10; CHECK-NEXT: .functype foo (i32, i32, i32) -> (){{$}}
11; CHECK-NEXT: .local i32, i32, i32, i32, i32, i32{{$}}
12entry:
13  %cmp.19 = icmp sgt i32 %h, 0
14  br i1 %cmp.19, label %for.cond.1.preheader.lr.ph, label %for.end.7
15
16for.cond.1.preheader.lr.ph:
17  %cmp2.17 = icmp sgt i32 %w, 0
18  br label %for.cond.1.preheader
19
20for.cond.1.preheader:
21  %y.020 = phi i32 [ 0, %for.cond.1.preheader.lr.ph ], [ %inc6, %for.inc.5 ]
22  br i1 %cmp2.17, label %for.body.3.lr.ph, label %for.inc.5
23
24for.body.3.lr.ph:
25  %mul4 = mul nsw i32 %y.020, %w
26  br label %for.body.3
27
28for.body.3:
29  %x.018 = phi i32 [ 0, %for.body.3.lr.ph ], [ %inc, %for.body.3 ]
30  %mul = mul nsw i32 %x.018, %y.020
31  %add = add nsw i32 %x.018, %mul4
32  %arrayidx = getelementptr inbounds i32, i32* %a, i32 %add
33  store i32 %mul, i32* %arrayidx, align 4
34  %inc = add nuw nsw i32 %x.018, 1
35  %exitcond = icmp eq i32 %inc, %w
36  br i1 %exitcond, label %for.inc.5.loopexit, label %for.body.3
37
38for.inc.5.loopexit:
39  br label %for.inc.5
40
41for.inc.5:
42  %inc6 = add nuw nsw i32 %y.020, 1
43  %exitcond22 = icmp eq i32 %inc6, %h
44  br i1 %exitcond22, label %for.end.7.loopexit, label %for.cond.1.preheader
45
46for.end.7.loopexit:
47  br label %for.end.7
48
49for.end.7:
50  ret void
51}
52