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# RUN: llc -march=hexagon -eif-limit=4 -run-pass hexagon-early-if -o - %s | FileCheck %s
# Check that even with the limit of 4 instructions, the block bb.1 is
# if-converted.
# CHECK-LABEL: bb.0:
# CHECK: %0:intregs = COPY $r0
# CHECK: %1:predregs = C2_cmpeqi %0, 0
# CHECK: %2:intregs = A2_tfrsi 123
# CHECK: DBG_VALUE %0, $noreg
# CHECK: DBG_VALUE %0, $noreg
# CHECK: DBG_VALUE %0, $noreg
# CHECK: DBG_VALUE %0, $noreg
# CHECK: DBG_VALUE %0, $noreg
# CHECK: %3:intregs = A2_tfrsi 321
# CHECK: %5:intregs = C2_mux %1, %2, %3
--- |
define void @foo() {
ret void
}
...
---
name: foo
tracksRegLiveness: true
registers:
- { id: 0, class: intregs }
- { id: 1, class: predregs }
- { id: 2, class: intregs }
- { id: 3, class: intregs }
- { id: 4, class: intregs }
body: |
bb.0:
liveins: $r0
%0 = COPY $r0
%1 = C2_cmpeqi %0, 0
%2 = A2_tfrsi 123
J2_jumpt %1, %bb.2, implicit-def dead $pc
J2_jump %bb.1, implicit-def dead $pc
bb.1:
DBG_VALUE %0, $noreg
DBG_VALUE %0, $noreg
DBG_VALUE %0, $noreg
DBG_VALUE %0, $noreg
DBG_VALUE %0, $noreg
%3 = A2_tfrsi 321
bb.2:
%4 = PHI %2, %bb.0, %3, %bb.1
...
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