#RUN: not --crash llc -o - -global-isel -run-pass=none -verify-machineinstrs %s 2>&1 | FileCheck %s # REQUIRES: aarch64-registered-target --- | ; ModuleID = 'test.ll' source_filename = "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 %tmp11 = add i32 %argc, 1 br label %return case2: ; preds = %entry %tmp22 = add i32 %argc, 2 br label %return return: ; preds = %case2, %case1 %res = phi i32 [ %tmp11, %case1 ], [ %tmp22, %case2 ] ret i32 %res } ... --- name: test_phi legalized: true regBankSelected: false selected: false tracksRegLiveness: true registers: - { id: 0, class: _, preferred-register: '' } - { id: 1, class: _, preferred-register: '' } - { id: 2, class: _, preferred-register: '' } - { id: 3, class: _, preferred-register: '' } - { id: 4, class: _, preferred-register: '' } - { id: 5, class: _, preferred-register: '' } - { id: 6, class: _, preferred-register: '' } - { id: 7, class: _, preferred-register: '' } - { id: 8, class: _, preferred-register: '' } - { id: 9, class: _, preferred-register: '' } liveins: body: | bb.1.entry: successors: %bb.2.case1(0x40000000), %bb.3.case2(0x40000000) liveins: $w0 ; This test makes sure that the Verifier catches G_PHI with mismatching types. ; CHECK: Bad machine code: Generic Instruction G_PHI has operands with incompatible/missing types %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 %9(s16) = G_TRUNC %4(s32) 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 %9(s16), %bb.2.case1, %6(s32), %bb.3.case2 $w0 = COPY %7(s32) RET_ReallyLR implicit $w0 ...