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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=hexagon -run-pass early-if-predicator %s -o - -verify-machineinstrs | FileCheck %s
# Test that "killed" flag on the same virtual register in merged blocks is
# removed for the first spliced block and is saved for the second one.
# Otherwise, register will be killed twice in a single block in the resulting
# MIR, which is incorrect.
---
name: my_func
alignment: 16
tracksRegLiveness: true
liveins:
- { reg: '$r0', virtual-reg: '%0' }
- { reg: '$r1', virtual-reg: '%1' }
body: |
; CHECK-LABEL: name: my_func
; CHECK: bb.0:
; CHECK-NEXT: liveins: $r0, $r1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:intregs = COPY $r0
; CHECK-NEXT: [[COPY1:%[0-9]+]]:intregs = COPY $r1
; CHECK-NEXT: [[S2_tstbit_i:%[0-9]+]]:predregs = S2_tstbit_i [[COPY1]], 0
; CHECK-NEXT: S4_storeirif_io [[S2_tstbit_i]], [[COPY]], 0, 2
; CHECK-NEXT: S4_storeirit_io [[S2_tstbit_i]], killed [[COPY]], 0, 1
; CHECK-NEXT: PS_jmpret $r31, implicit-def dead $pc
bb.0:
successors: %bb.1(0x40000000), %bb.2(0x40000000)
liveins: $r0, $r1
%0:intregs = COPY $r0
%1:intregs = COPY $r1
%2:predregs = S2_tstbit_i %1, 0
J2_jumpf %2, %bb.2, implicit-def dead $pc
J2_jump %bb.1, implicit-def dead $pc
bb.1:
successors: %bb.3(0x80000000)
S4_storeiri_io killed %0, 0, 1
J2_jump %bb.3, implicit-def dead $pc
bb.2:
successors: %bb.3(0x80000000)
S4_storeiri_io killed %0, 0, 2
J2_jump %bb.3, implicit-def dead $pc
bb.3:
PS_jmpret $r31, implicit-def dead $pc
...
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