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TheRock/compiler/amd-llvm/llvm/test/CodeGen/AMDGPU/early-tailduplicator-terminator.mir
derek.holloway 7502bf64a4
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -run-pass=early-tailduplication -verify-machineinstrs -o - %s | FileCheck %s
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -passes=early-tailduplication -o - %s | FileCheck %s
# Early tail duplication should not merge bb.6 into bb.5, adding a
# non-terminator (S_SLEEP) after the terminator S_MOV_B32_term.
---
name: tail_duplicate_terminator
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: tail_duplicate_terminator
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_SLEEP 1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[S_MOV_B32_term:%[0-9]+]]:sreg_32_xm0_xexec = S_MOV_B32_term $exec_lo
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.3(0x40000000), %bb.4(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: SI_WATERFALL_LOOP %bb.3, implicit $exec
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: successors: %bb.5(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $exec_lo = S_MOV_B32_term [[S_MOV_B32_term]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.5:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_SLEEP 2
; CHECK-NEXT: S_BRANCH %bb.1
bb.1:
S_BRANCH %bb.3
bb.2:
S_SLEEP 1
bb.3:
%0:sreg_32_xm0_xexec = S_MOV_B32_term $exec_lo
bb.4:
SI_WATERFALL_LOOP %bb.4, implicit $exec
bb.5:
$exec_lo = S_MOV_B32_term %0
bb.6:
S_SLEEP 2
S_BRANCH %bb.2
...