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|
# RUN: llc -mtriple=aarch64-unknown-unknown -o - -verify-machineinstrs -run-pass=instruction-select %s | FileCheck %s
--- |
; ModuleID = '/tmp/test.ll'
source_filename = "/tmp/test.ll"
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-unknown"
define i32 @test_phi(i32 %argc) {
entry:
%cmp = icmp ugt i32 %argc, 0
br i1 %cmp, label %case1, label %case2
case1: ; preds = %entry
%tmp1 = add i32 %argc, 1
br label %return
case2: ; preds = %entry
%tmp2 = add i32 %argc, 2
br label %return
return: ; preds = %case2, %case1
%res = phi i32 [ %tmp1, %case1 ], [ %tmp2, %case2 ]
ret i32 %res
}
define i64* @test_phi_ptr(i64* %a, i64* %b, i1 %cond) {
entry:
ret i64* null
}
...
---
name: test_phi
alignment: 4
exposesReturnsTwice: false
legalized: true
regBankSelected: true
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: gpr, preferred-register: '' }
- { id: 1, class: gpr, preferred-register: '' }
- { id: 2, class: gpr, preferred-register: '' }
- { id: 3, class: gpr, preferred-register: '' }
- { id: 4, class: gpr, preferred-register: '' }
- { id: 5, class: gpr, preferred-register: '' }
- { id: 6, class: gpr, preferred-register: '' }
- { id: 7, class: gpr, preferred-register: '' }
- { id: 8, class: gpr, preferred-register: '' }
liveins:
body: |
bb.1.entry:
successors: %bb.2.case1(0x40000000), %bb.3.case2(0x40000000)
liveins: $w0
; CHECK-LABEL: name: test_phi
; CHECK: [[RES:%.*]]:gpr32 = PHI
%0(s32) = COPY $w0
%1(s32) = G_CONSTANT i32 0
%3(s32) = G_CONSTANT i32 1
%5(s32) = G_CONSTANT i32 2
%8(s32) = G_ICMP intpred(ugt), %0(s32), %1
%2(s1) = G_TRUNC %8(s32)
G_BRCOND %2(s1), %bb.2.case1
G_BR %bb.3.case2
bb.2.case1:
successors: %bb.4.return(0x80000000)
%4(s32) = G_ADD %0, %3
G_BR %bb.4.return
bb.3.case2:
successors: %bb.4.return(0x80000000)
%6(s32) = G_ADD %0, %5
bb.4.return:
%7(s32) = G_PHI %4(s32), %bb.2.case1, %6(s32), %bb.3.case2
$w0 = COPY %7(s32)
RET_ReallyLR implicit $w0
...
---
name: test_phi_ptr
alignment: 4
exposesReturnsTwice: false
legalized: true
regBankSelected: true
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: gpr, preferred-register: '' }
- { id: 1, class: gpr, preferred-register: '' }
- { id: 2, class: gpr, preferred-register: '' }
- { id: 3, class: gpr, preferred-register: '' }
- { id: 4, class: _, preferred-register: '' }
- { id: 5, class: _, preferred-register: '' }
liveins:
body: |
bb.0:
successors: %bb.1, %bb.2
liveins: $w2, $x0, $x1
; CHECK-LABEL: name: test_phi_ptr
%0(p0) = COPY $x0
%1(p0) = COPY $x1
%6:gpr(s32) = COPY $w2
%2(s1) = G_TRUNC %6
G_BRCOND %2(s1), %bb.1
G_BR %bb.2
bb.1:
successors: %bb.2
bb.2:
; CHECK: %{{[0-9]+}}:gpr64 = PHI %{{[0-9]+}}, %bb.0, %{{[0-9]+}}, %bb.1
%3(p0) = G_PHI %0(p0), %bb.0, %1(p0), %bb.1
$x0 = COPY %3(p0)
RET_ReallyLR implicit $x0
...
|
