1 # RUN: llc -mtriple=aarch64-unknown-unknown -o - -verify-machineinstrs -run-pass=instruction-select -global-isel-abort=1 %s | FileCheck %s
3 ; ModuleID = '/tmp/test.ll'
4 source_filename = "/tmp/test.ll"
5 target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
6 target triple = "aarch64-unknown-unknown"
8 define i32 @test_phi(i32 %argc) {
10 %cmp = icmp ugt i32 %argc, 0
11 br i1 %cmp, label %case1, label %case2
13 case1: ; preds = %entry
14 %tmp1 = add i32 %argc, 1
17 case2: ; preds = %entry
18 %tmp2 = add i32 %argc, 2
21 return: ; preds = %case2, %case1
22 %res = phi i32 [ %tmp1, %case1 ], [ %tmp2, %case2 ]
26 define ptr @test_phi_ptr(ptr %a, ptr %b, i1 %cond) {
35 exposesReturnsTwice: false
39 tracksRegLiveness: true
41 - { id: 0, class: gpr, preferred-register: '' }
42 - { id: 1, class: gpr, preferred-register: '' }
43 - { id: 2, class: gpr, preferred-register: '' }
44 - { id: 3, class: gpr, preferred-register: '' }
45 - { id: 4, class: gpr, preferred-register: '' }
46 - { id: 5, class: gpr, preferred-register: '' }
47 - { id: 6, class: gpr, preferred-register: '' }
48 - { id: 7, class: gpr, preferred-register: '' }
49 - { id: 8, class: gpr, preferred-register: '' }
53 successors: %bb.2.case1(0x40000000), %bb.3.case2(0x40000000)
55 ; CHECK-LABEL: name: test_phi
56 ; CHECK: [[RES:%.*]]:gpr32 = PHI
59 %1(s32) = G_CONSTANT i32 0
60 %3(s32) = G_CONSTANT i32 1
61 %5(s32) = G_CONSTANT i32 2
62 %8(s32) = G_ICMP intpred(ugt), %0(s32), %1
63 G_BRCOND %8, %bb.2.case1
67 successors: %bb.4.return(0x80000000)
69 %4(s32) = G_ADD %0, %3
73 successors: %bb.4.return(0x80000000)
75 %6(s32) = G_ADD %0, %5
78 %7(s32) = G_PHI %4(s32), %bb.2.case1, %6(s32), %bb.3.case2
80 RET_ReallyLR implicit $w0
87 exposesReturnsTwice: false
91 tracksRegLiveness: true
93 - { id: 0, class: gpr, preferred-register: '' }
94 - { id: 1, class: gpr, preferred-register: '' }
95 - { id: 2, class: gpr, preferred-register: '' }
96 - { id: 3, class: gpr, preferred-register: '' }
97 - { id: 4, class: _, preferred-register: '' }
98 - { id: 5, class: _, preferred-register: '' }
102 successors: %bb.1, %bb.2
103 liveins: $w2, $x0, $x1
104 ; CHECK-LABEL: name: test_phi_ptr
108 %2:gpr(s32) = COPY $w2
117 ; CHECK: %{{[0-9]+}}:gpr64 = PHI %{{[0-9]+}}, %bb.0, %{{[0-9]+}}, %bb.1
118 %3(p0) = G_PHI %0(p0), %bb.0, %1(p0), %bb.1
120 RET_ReallyLR implicit $x0