1#RUN: not llc -o - -global-isel -run-pass=none -verify-machineinstrs %s 2>&1 | FileCheck %s 2# REQUIRES: global-isel, aarch64-registered-target 3--- | 4 ; ModuleID = 'test.ll' 5 source_filename = "test.ll" 6 target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" 7 target triple = "aarch64-unknown-unknown" 8 9 define i32 @test_phi(i32 %argc) { 10 entry: 11 %cmp = icmp ugt i32 %argc, 0 12 br i1 %cmp, label %case1, label %case2 13 14 case1: ; preds = %entry 15 %tmp11 = add i32 %argc, 1 16 br label %return 17 18 case2: ; preds = %entry 19 %tmp22 = add i32 %argc, 2 20 br label %return 21 22 return: ; preds = %case2, %case1 23 %res = phi i32 [ %tmp11, %case1 ], [ %tmp22, %case2 ] 24 ret i32 %res 25 } 26 27... 28--- 29name: test_phi 30legalized: true 31regBankSelected: false 32selected: false 33tracksRegLiveness: true 34registers: 35 - { id: 0, class: _, preferred-register: '' } 36 - { id: 1, class: _, preferred-register: '' } 37 - { id: 2, class: _, preferred-register: '' } 38 - { id: 3, class: _, preferred-register: '' } 39 - { id: 4, class: _, preferred-register: '' } 40 - { id: 5, class: _, preferred-register: '' } 41 - { id: 6, class: _, preferred-register: '' } 42 - { id: 7, class: _, preferred-register: '' } 43 - { id: 8, class: _, preferred-register: '' } 44 - { id: 9, class: _, preferred-register: '' } 45liveins: 46body: | 47 bb.1.entry: 48 successors: %bb.2.case1(0x40000000), %bb.3.case2(0x40000000) 49 liveins: $w0 50 ; This test makes sure that the Verifier catches G_PHI with mismatching types. 51 ; CHECK: Bad machine code: Generic Instruction G_PHI has operands with incompatible/missing types 52 53 %0(s32) = COPY $w0 54 %1(s32) = G_CONSTANT i32 0 55 %3(s32) = G_CONSTANT i32 1 56 %5(s32) = G_CONSTANT i32 2 57 %8(s32) = G_ICMP intpred(ugt), %0(s32), %1 58 %2(s1) = G_TRUNC %8(s32) 59 G_BRCOND %2(s1), %bb.2.case1 60 G_BR %bb.3.case2 61 62 bb.2.case1: 63 successors: %bb.4.return(0x80000000) 64 65 %4(s32) = G_ADD %0, %3 66 %9(s16) = G_TRUNC %4(s32) 67 G_BR %bb.4.return 68 69 bb.3.case2: 70 successors: %bb.4.return(0x80000000) 71 72 %6(s32) = G_ADD %0, %5 73 74 bb.4.return: 75 %7(s32) = G_PHI %9(s16), %bb.2.case1, %6(s32), %bb.3.case2 76 $w0 = COPY %7(s32) 77 RET_ReallyLR implicit $w0 78 79... 80