1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2# RUN: llc %s -o - -run-pass=machine-sink -mtriple=arm-none-eabi | FileCheck %s
3
4--- |
5  target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
6  target triple = "arm-none-unknown-eabi"
7
8  %struct.anon = type { i32, i32 }
9
10  @e = external constant [2 x %struct.anon], align 4
11
12  define arm_aapcscc void @g(i32 * noalias %a, i32 *%b, i32 %x) {
13  entry:
14    %c = getelementptr inbounds [2 x %struct.anon], [2 x %struct.anon]* @e, i32 0, i32 %x, i32 0
15    %l1 = load i32, i32* %c, align 4
16    %d = getelementptr inbounds [2 x %struct.anon], [2 x %struct.anon]* @e, i32 0, i32 %x, i32 1
17    %l2 = load i32, i32* %d, align 4
18    br i1 undef, label %land.lhs.true, label %if.end
19
20  land.lhs.true:                                    ; preds = %entry
21    br label %if.end
22
23  if.end:                                           ; preds = %land.lhs.true, %entry
24    %h.0 = phi i32 [ %l1, %entry ], [ 0, %land.lhs.true ]
25    ret void
26  }
27
28...
29---
30name:            g
31tracksRegLiveness: true
32registers:
33  - { id: 0, class: gpr, preferred-register: '' }
34  - { id: 1, class: gpr, preferred-register: '' }
35  - { id: 2, class: gpr, preferred-register: '' }
36  - { id: 6, class: gpr, preferred-register: '' }
37  - { id: 7, class: gpr, preferred-register: '' }
38  - { id: 8, class: gpr, preferred-register: '' }
39  - { id: 9, class: gprnopc, preferred-register: '' }
40liveins:
41  - { reg: '$r0', virtual-reg: '%8' }
42  - { reg: '$r1', virtual-reg: '%9' }
43liveins:         []
44body:             |
45  ; CHECK-LABEL: name: g
46  ; CHECK: bb.0:
47  ; CHECK:   successors: %bb.1(0x40000000), %bb.3(0x40000000)
48  ; CHECK:   liveins: $r0, $r1
49  ; CHECK:   [[COPY:%[0-9]+]]:gpr = COPY $r1
50  ; CHECK:   [[COPY1:%[0-9]+]]:gprnopc = COPY $r0
51  ; CHECK:   [[LDR_PRE_REG:%[0-9]+]]:gpr, [[LDR_PRE_REG1:%[0-9]+]]:gpr = LDR_PRE_REG [[COPY]], killed [[COPY1]], 16387, 14 /* CC::al */, $noreg :: (load 4 from %ir.c)
52  ; CHECK:   [[MOVi:%[0-9]+]]:gpr = MOVi 0, 14 /* CC::al */, $noreg, $noreg
53  ; CHECK:   CMPri [[MOVi]], 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
54  ; CHECK:   Bcc %bb.1, 0 /* CC::eq */, $cpsr
55  ; CHECK: bb.3:
56  ; CHECK:   successors: %bb.2(0x80000000)
57  ; CHECK:   B %bb.2
58  ; CHECK: bb.1:
59  ; CHECK:   successors: %bb.2(0x80000000)
60  ; CHECK: bb.2:
61  ; CHECK:   [[PHI:%[0-9]+]]:gpr = PHI [[LDR_PRE_REG]], %bb.3, [[MOVi]], %bb.1
62  ; CHECK:   CMPri [[MOVi]], 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
63  ; CHECK:   [[LDRi12_:%[0-9]+]]:gpr = LDRi12 killed [[LDR_PRE_REG1]], 4, 14 /* CC::al */, $noreg :: (load 4 from %ir.d)
64  ; CHECK:   MOVPCLR 14 /* CC::al */, $noreg
65  bb.0:
66    liveins: $r0, $r1
67    successors: %bb.1(0x40000000), %bb.2(0x40000000)
68
69    %8:gpr = COPY $r1
70    %9:gprnopc = COPY $r0
71    %0:gpr, %6:gpr = LDR_PRE_REG %8, killed %9, 16387, 14, $noreg :: (load 4 from %ir.c)
72    %7:gpr = MOVi 0, 14, $noreg, $noreg
73    CMPri %7, 0, 14, $noreg, implicit-def $cpsr
74    Bcc %bb.2, 1, $cpsr
75    B %bb.1
76
77  bb.1:
78    successors: %bb.2(0x80000000)
79
80  bb.2:
81
82    %2:gpr = PHI %0, %bb.0, %7, %bb.1
83    CMPri %7, 0, 14, $noreg, implicit-def $cpsr
84    %1:gpr = LDRi12 killed %6, 4, 14, $noreg :: (load 4 from %ir.d)
85    MOVPCLR 14, $noreg
86
87...
88