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| #RUN: not llc -o - -global-isel -run-pass=none -verify-machineinstrs %s 2>&1 | FileCheck %s
# REQUIRES: global-isel, 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
...
|