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# RUN: llc -march=hexagon -run-pass expand-condsets -o - %s -verify-machineinstrs -debug-only=expand-condsets 2>&1 | FileCheck %s
# REQUIRES: asserts
# Check that coalesced registers are removed from live intervals.
#
# Check that %3 is coalesced into %4, and that after coalescing
# it is no longer in live intervals.
# CHECK-LABEL: After expand-condsets
# CHECK: INTERVALS
# CHECK-NOT: %3
# CHECK: MACHINEINSTRS
--- |
define void @fred() { ret void }
...
---
name: fred
tracksRegLiveness: true
registers:
- { id: 0, class: intregs }
- { id: 1, class: intregs }
- { id: 2, class: predregs }
- { id: 3, class: intregs }
- { id: 4, class: intregs }
liveins:
- { reg: '$r0', virtual-reg: '%0' }
- { reg: '$r1', virtual-reg: '%1' }
- { reg: '$p0', virtual-reg: '%2' }
body: |
bb.0:
liveins: $r0, $r1, $p0
%0 = COPY $r0
%0 = COPY $r0 ; Force isSSA = false.
%1 = COPY $r1
%2 = COPY $p0
; Check that %3 was coalesced into %4.
; CHECK: %4:intregs = A2_abs %1
; CHECK: %4:intregs = A2_tfrt killed %2, killed %0, implicit %4
%3 = A2_abs %1
%4 = C2_mux %2, %0, %3
$r0 = COPY %4
J2_jumpr $r31, implicit $r0, implicit-def $pc
...
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