33 lines
1.2 KiB
YAML
33 lines
1.2 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
|
|
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-coalescing -run-pass=register-coalescer -o - %s | FileCheck %s
|
|
|
|
# Check that there's no "Live segment doesn't end at a valid
|
|
# instruction" failure after coalescing %0 into %2, which is
|
|
# ultimately a pair of dead copies.
|
|
|
|
---
|
|
name: coalesce_into_dead_subreg_copy
|
|
tracksRegLiveness: true
|
|
machineFunctionInfo:
|
|
isEntryFunction: true
|
|
scratchRSrcReg: '$sgpr0_sgpr1_sgpr2_sgpr3'
|
|
stackPtrOffsetReg: '$sgpr32'
|
|
occupancy: 8
|
|
body: |
|
|
; CHECK-LABEL: name: coalesce_into_dead_subreg_copy
|
|
; CHECK: bb.0:
|
|
; CHECK-NEXT: successors: %bb.1(0x80000000)
|
|
; CHECK-NEXT: {{ $}}
|
|
; CHECK-NEXT: dead %2:sreg_64_xexec = S_LOAD_DWORDX2_IMM undef %1:sgpr_64, 24, 0 :: (dereferenceable invariant load (s64), addrspace 4)
|
|
; CHECK-NEXT: S_BRANCH %bb.1
|
|
; CHECK-NEXT: {{ $}}
|
|
; CHECK-NEXT: bb.1:
|
|
bb.0:
|
|
%0:sreg_64_xexec = S_LOAD_DWORDX2_IMM undef %1:sgpr_64, 24, 0 :: (dereferenceable invariant load (s64), addrspace 4)
|
|
undef %2.sub0:sreg_64 = COPY %0.sub0:sreg_64_xexec
|
|
%2.sub1:sreg_64 = COPY killed %0.sub1:sreg_64_xexec
|
|
S_BRANCH %bb.1
|
|
|
|
bb.1:
|
|
|
|
...
|