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| # RUN: llc -march=hexagon -run-pass if-converter -o - %s | FileCheck %s
# Check that an implicit use is generated for a predicated instruction
# when a subregister of the redefined register is live.
# CHECK-LABEL: name: foo
# Verify the predicated block:
# CHECK-LABEL: bb.0:
# CHECK: liveins: $r0, $r1, $p0, $d8
# CHECK: $d8 = A2_combinew killed $r0, killed $r1
# CHECK: $d8 = L2_ploadrdf_io $p0, $r29, 0, implicit killed $d8
# CHECK: J2_jumprf killed $p0, $r31, implicit-def $pc, implicit-def $pc, implicit $d8
--- |
define void @foo() {
ret void
}
...
---
name: foo
alignment: 16
tracksRegLiveness: true
liveins:
- { reg: '$r0' }
- { reg: '$r1' }
- { reg: '$p0' }
- { reg: '$d8' }
body: |
bb.0:
successors: %bb.1, %bb.2
liveins: $r0, $r1, $p0, $d8
$d8 = A2_combinew killed $r0, killed $r1
J2_jumpf killed $p0, %bb.2, implicit-def $pc
bb.1:
liveins: $r17
$r0 = A2_tfrsi 0
$r1 = A2_tfrsi 0
A2_nop ; non-predicable
J2_jumpr killed $r31, implicit-def dead $pc, implicit killed $d0
bb.2:
; Predicate this block.
$d8 = L2_loadrd_io $r29, 0
J2_jumpr killed $r31, implicit-def dead $pc, implicit killed $d8
...
|