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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn -o - -run-pass=block-placement -mcpu=gfx1010 -mattr=-inst-fwd-prefetch-bug -verify-machineinstrs %s | FileCheck -check-prefixes=GFX10 %s
# RUN: llc -mtriple=amdgcn -o - -run-pass=block-placement -mcpu=gfx1100 -mattr=-inst-fwd-prefetch-bug -verify-machineinstrs %s | FileCheck -check-prefixes=GFX11 %s
# Used to fail with
# Assertion `Out && "Header of loop has no predecessors from outside loop?"
---
name: loop_header_nopred
body: |
; GFX10-LABEL: name: loop_header_nopred
; GFX10: bb.0:
; GFX10-NEXT: successors: %bb.2(0x80000000)
; GFX10-NEXT: {{ $}}
; GFX10-NEXT: S_BRANCH %bb.2
; GFX10-NEXT: {{ $}}
; GFX10-NEXT: bb.1 (align 64):
; GFX10-NEXT: successors: %bb.7(0x04000000), %bb.2(0x7c000000)
; GFX10-NEXT: {{ $}}
; GFX10-NEXT: S_CBRANCH_VCCNZ %bb.7, implicit $vcc_lo
; GFX10-NEXT: {{ $}}
; GFX10-NEXT: bb.2:
; GFX10-NEXT: successors: %bb.5(0x40000000), %bb.1(0x40000000)
; GFX10-NEXT: {{ $}}
; GFX10-NEXT: S_CBRANCH_EXECZ %bb.1, implicit $exec
; GFX10-NEXT: {{ $}}
; GFX10-NEXT: bb.5:
; GFX10-NEXT: successors: %bb.1(0x04000000), %bb.5(0x7c000000)
; GFX10-NEXT: {{ $}}
; GFX10-NEXT: S_NOP 0
; GFX10-NEXT: S_NOP 0
; GFX10-NEXT: S_NOP 0
; GFX10-NEXT: S_NOP 0
; GFX10-NEXT: S_NOP 0
; GFX10-NEXT: S_NOP 0
; GFX10-NEXT: S_NOP 0
; GFX10-NEXT: S_NOP 0
; GFX10-NEXT: S_NOP 0
; GFX10-NEXT: S_NOP 0
; GFX10-NEXT: S_NOP 0
; GFX10-NEXT: S_CBRANCH_EXECZ %bb.5, implicit $exec
; GFX10-NEXT: S_BRANCH %bb.1
; GFX10-NEXT: {{ $}}
; GFX10-NEXT: bb.7:
; GFX10-NEXT: S_ENDPGM 0
;
; GFX11-LABEL: name: loop_header_nopred
; GFX11: bb.0:
; GFX11-NEXT: successors: %bb.2(0x80000000)
; GFX11-NEXT: {{ $}}
; GFX11-NEXT: S_BRANCH %bb.2
; GFX11-NEXT: {{ $}}
; GFX11-NEXT: bb.1:
; GFX11-NEXT: successors: %bb.7(0x04000000), %bb.2(0x7c000000)
; GFX11-NEXT: {{ $}}
; GFX11-NEXT: S_CBRANCH_VCCNZ %bb.7, implicit $vcc_lo
; GFX11-NEXT: {{ $}}
; GFX11-NEXT: bb.2:
; GFX11-NEXT: successors: %bb.5(0x40000000), %bb.1(0x40000000)
; GFX11-NEXT: {{ $}}
; GFX11-NEXT: S_CBRANCH_EXECZ %bb.1, implicit $exec
; GFX11-NEXT: {{ $}}
; GFX11-NEXT: bb.5:
; GFX11-NEXT: successors: %bb.1(0x04000000), %bb.5(0x7c000000)
; GFX11-NEXT: {{ $}}
; GFX11-NEXT: S_NOP 0
; GFX11-NEXT: S_NOP 0
; GFX11-NEXT: S_NOP 0
; GFX11-NEXT: S_NOP 0
; GFX11-NEXT: S_NOP 0
; GFX11-NEXT: S_NOP 0
; GFX11-NEXT: S_NOP 0
; GFX11-NEXT: S_NOP 0
; GFX11-NEXT: S_NOP 0
; GFX11-NEXT: S_NOP 0
; GFX11-NEXT: S_NOP 0
; GFX11-NEXT: S_CBRANCH_EXECZ %bb.5, implicit $exec
; GFX11-NEXT: S_BRANCH %bb.1
; GFX11-NEXT: {{ $}}
; GFX11-NEXT: bb.7:
; GFX11-NEXT: S_ENDPGM 0
bb.0:
successors: %bb.1(0x80000000)
bb.1:
successors: %bb.2(0x40000000), %bb.3(0x40000000)
S_CBRANCH_VCCZ %bb.3, implicit $vcc
S_BRANCH %bb.2
bb.2:
successors: %bb.3(0x80000000)
bb.3:
successors: %bb.4(0x40000000), %bb.6(0x40000000)
S_CBRANCH_EXECZ %bb.6, implicit $exec
S_BRANCH %bb.4
bb.4:
successors: %bb.5(0x04000000), %bb.4(0x7c000000)
S_NOP 0
S_NOP 0
S_NOP 0
S_NOP 0
S_NOP 0
S_NOP 0
S_NOP 0
S_NOP 0
S_NOP 0
S_NOP 0
S_NOP 0
S_CBRANCH_EXECZ %bb.4, implicit $exec
bb.5:
successors: %bb.6(0x80000000)
bb.6:
successors: %bb.7(0x04000000), %bb.1(0x7c000000)
S_CBRANCH_VCCZ %bb.1, implicit $vcc
bb.7:
S_ENDPGM 0
...
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