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# RUN: llc -mtriple=aarch64-none-linux-gnu -mcpu=cortex-a57 -enable-unsafe-fp-math \
# RUN: -run-pass machine-combiner -machine-combiner-inc-threshold=0 \
# RUN: -machine-combiner-verify-pattern-order=true -verify-machineinstrs -o - %s | FileCheck %s
---
# Test incremental depth updates succeed when triggered after the removal of
# the first instruction in a basic block.
# CHECK-LABEL: name: inc_update_iterator_test
name: inc_update_iterator_test
registers:
- { id: 0, class: fpr64 }
- { id: 1, class: gpr32 }
- { id: 2, class: gpr32 }
- { id: 3, class: gpr32 }
- { id: 4, class: gpr32 }
- { id: 5, class: gpr32 }
- { id: 6, class: gpr32 }
- { id: 7, class: fpr64 }
- { id: 8, class: fpr64 }
- { id: 9, class: fpr64 }
body: |
bb.0:
successors: %bb.1, %bb.2
%3 = COPY $w2
%2 = COPY $w1
%1 = COPY $w0
%0 = COPY $d0
%4 = SUBSWrr %1, %2, implicit-def $nzcv
Bcc 13, %bb.2, implicit $nzcv
B %bb.1
bb.1:
; CHECK: MADDWrrr %1, %2, %3
%5 = MADDWrrr %1, %2, $wzr
%6 = ADDWrr %3, killed %5
%7 = SCVTFUWDri killed %6, implicit $fpcr
; CHECK: FMADDDrrr %7, %7, %0, implicit $fpcr
%8 = FMULDrr %7, %7, implicit $fpcr
%9 = FADDDrr %0, killed %8, implicit $fpcr
$d0 = COPY %9
RET_ReallyLR implicit $d0
bb.2:
$d0 = COPY %0
RET_ReallyLR implicit $d0
...
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