1; RUN: llc < %s -asm-verbose=false -disable-wasm-fallthrough-return-opt -disable-wasm-explicit-locals -verify-machineinstrs | FileCheck %s
2
3; Test that phis are lowered.
4
5target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
6target triple = "wasm32-unknown-unknown"
7
8; Basic phi triangle.
9
10; CHECK-LABEL: test0:
11; CHECK: return $0
12; CHECK: div_s $push[[NUM0:[0-9]+]]=, $0, $pop[[NUM1:[0-9]+]]{{$}}
13; CHECK: return $pop[[NUM0]]{{$}}
14define i32 @test0(i32 %p) {
15entry:
16  %t = icmp slt i32 %p, 0
17  br i1 %t, label %true, label %done
18true:
19  %a = sdiv i32 %p, 3
20  br label %done
21done:
22  %s = phi i32 [ %a, %true ], [ %p, %entry ]
23  ret i32 %s
24}
25
26; Swap phis.
27
28; CHECK-LABEL: test1:
29; CHECK: .LBB1_1:
30; CHECK: copy_local $[[NUM0:[0-9]+]]=, $[[NUM1:[0-9]+]]{{$}}
31; CHECK: copy_local $[[NUM1]]=, $[[NUM2:[0-9]+]]{{$}}
32; CHECK: copy_local $[[NUM2]]=, $[[NUM0]]{{$}}
33define i32 @test1(i32 %n) {
34entry:
35  br label %loop
36
37loop:
38  %a = phi i32 [ 0, %entry ], [ %b, %loop ]
39  %b = phi i32 [ 1, %entry ], [ %a, %loop ]
40  %i = phi i32 [ 0, %entry ], [ %i.next, %loop ]
41
42  %i.next = add i32 %i, 1
43  %t = icmp slt i32 %i.next, %n
44  br i1 %t, label %loop, label %exit
45
46exit:
47  ret i32 %a
48}
49