live-ins-01.mir
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# RUN: not --crash llc -o - %s -mtriple=s390x-linux-gnu -mcpu=z14 -run-pass none 2>&1 | FileCheck %s
# REQUIRES: systemz-registered-target
# Test that a the machine verifier reports an error when a register in
# liveins is not liveout from predecessor.
---
name: f1
tracksRegLiveness: true
machineFunctionInfo: {}
body: |
bb.0:
liveins: $r2l, $r3l
%1:gr32bit = COPY $r3l
%0:gr32bit = COPY $r2l
CHIMux %0, 0, implicit-def $cc
bb.1:
liveins: $cc
bb.2:
liveins: $cc
%2:grx32bit = LOCRMux %1, %0, 14, 8, implicit $cc
$r2l = COPY %2
Return implicit $r2l
...
# CHECK: *** Bad machine code: Live in register not found to be live out from predecessor. ***
# CHECK:- function: f2
# CHECK:- basic block: %bb.2
# CHECK:CC not found to be live out from %bb.1
---
name: f2
tracksRegLiveness: true
machineFunctionInfo: {}
body: |
bb.0:
liveins: $r2l, $r3l
%1:gr32bit = COPY $r3l
%0:gr32bit = COPY $r2l
CHIMux %0, 0, implicit-def $cc
bb.1:
liveins: $cc
KILL killed $cc
bb.2:
liveins: $cc
%2:grx32bit = LOCRMux %1, %0, 14, 8, implicit $cc
$r2l = COPY %2
Return implicit $r2l
...