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TheRock/compiler/amd-llvm/llvm/test/CodeGen/AMDGPU/subreg-undef-def-with-other-subreg-defs.mir
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx906 -verify-machineinstrs -run-pass=machine-scheduler -verify-misched -o - %s | FileCheck %s
# Deciding which lanes are killed needs to account for other defs in the
# instruction.
#
# addVRegDefDeps would encounter the %0.sub0 def and erase %0 from
# current vreg uses because it shared no lanes with %0.sub1 use on the
# nop. It then didn't see the lanemask when it reached the second
# subreg def, and failed to add the necessary dependency between the
# asm and S_NOP
---
name: no_live_subrange_at_use
tracksRegLiveness: true
machineFunctionInfo:
isEntryFunction: true
body: |
; CHECK-LABEL: name: no_live_subrange_at_use
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DS_READ_B32_gfx9_:%[0-9]+]]:vgpr_32 = DS_READ_B32_gfx9 [[V_MOV_B32_e32_1]], 0, 0, implicit $exec :: (load (s32), addrspace 3)
; CHECK-NEXT: INLINEASM &"", sideeffect attdialect, regdef:VGPR_32, def [[V_MOV_B32_e32_]], reguse tiedto:$0, [[V_MOV_B32_e32_]](tied-def 3)
; CHECK-NEXT: INLINEASM &"", sideeffect attdialect, reguse:VGPR_32, [[DS_READ_B32_gfx9_]]
; CHECK-NEXT: INLINEASM &"", sideeffect attdialect, regdef:VGPR_32, def undef [[V_MOV_B32_e32_]].sub0, regdef:VGPR_32, def undef [[V_MOV_B32_e32_]].sub1
; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub1
; CHECK-NEXT: $sgpr10 = S_MOV_B32 -1
; CHECK-NEXT: S_BRANCH %bb.1
bb.0:
undef %0.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
%0.sub1:vreg_64 = V_MOV_B32_e32 0, implicit $exec
%1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
bb.1:
%2:vgpr_32 = DS_READ_B32_gfx9 %1, 0, 0, implicit $exec :: (load (s32), addrspace 3)
INLINEASM &"", sideeffect attdialect, regdef:VGPR_32, def %0, reguse tiedto:$0, %0(tied-def 3)
INLINEASM &"", sideeffect attdialect, reguse:VGPR_32, %2
INLINEASM &"", sideeffect attdialect, regdef:VGPR_32, def undef %0.sub0, regdef:VGPR_32, def %0.sub1
S_NOP 0, implicit %0.sub1
$sgpr10 = S_MOV_B32 -1
S_BRANCH %bb.1
...
# Different operand order
---
name: no_live_subrange_at_use_swap
tracksRegLiveness: true
machineFunctionInfo:
isEntryFunction: true
body: |
; CHECK-LABEL: name: no_live_subrange_at_use_swap
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: undef [[V_MOV_B32_e32_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]].sub1:vreg_64 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DS_READ_B32_gfx9_:%[0-9]+]]:vgpr_32 = DS_READ_B32_gfx9 [[V_MOV_B32_e32_1]], 0, 0, implicit $exec :: (load (s32), addrspace 3)
; CHECK-NEXT: INLINEASM &"", sideeffect attdialect, regdef:VGPR_32, def [[V_MOV_B32_e32_]], reguse tiedto:$0, [[V_MOV_B32_e32_]](tied-def 3)
; CHECK-NEXT: INLINEASM &"", sideeffect attdialect, reguse:VGPR_32, [[DS_READ_B32_gfx9_]]
; CHECK-NEXT: INLINEASM &"", sideeffect attdialect, regdef:VGPR_32, def undef [[V_MOV_B32_e32_]].sub1, regdef:VGPR_32, def undef [[V_MOV_B32_e32_]].sub0
; CHECK-NEXT: S_NOP 0, implicit [[V_MOV_B32_e32_]].sub1
; CHECK-NEXT: $sgpr10 = S_MOV_B32 -1
; CHECK-NEXT: S_BRANCH %bb.1
bb.0:
undef %0.sub0:vreg_64 = V_MOV_B32_e32 0, implicit $exec
%0.sub1:vreg_64 = V_MOV_B32_e32 0, implicit $exec
%1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
bb.1:
%2:vgpr_32 = DS_READ_B32_gfx9 %1, 0, 0, implicit $exec :: (load (s32), addrspace 3)
INLINEASM &"", sideeffect attdialect, regdef:VGPR_32, def %0, reguse tiedto:$0, %0(tied-def 3)
INLINEASM &"", sideeffect attdialect, reguse:VGPR_32, %2
INLINEASM &"", sideeffect attdialect, regdef:VGPR_32, def %0.sub1, regdef:VGPR_32, def undef %0.sub0
S_NOP 0, implicit %0.sub1
$sgpr10 = S_MOV_B32 -1
S_BRANCH %bb.1
...