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clang-p2996/llvm/test/CodeGen/AMDGPU/postra-bundle-memops.mir
Matt Arsenault 81b2c23b77 AMDGPU: Use kill instruction to hint soft clause live ranges 
Previously we would use a bundle to hint the register allocator to not
overwrite the pointers in a sequence of loads to avoid breaking soft
clauses. This bundling was based on a fuzzy register pressure
heuristic, so we could not guarantee using more registers than are
really available. This would result in register allocator failing on
unsatisfiable bundles. Use a kill to artificially extend the live
ranges, so we can always succeed at register allocation even if it
means extra spills in the worst case.

This seems to capture most of the benefit of the bundle while avoiding
most of the risk presented by the bundle. However the lit tests do
show a handful of regressions. In some cases with sequences of
volatile loads, unused load components end up getting reallocated to
the next load which forces a wait between. There are also a few small
scheduling regressions where a hazard used to be avoided, and one
spill torture test which for some reason nearly doubles the stack
usage. There is also a bit of noise from leftover kills (it may make
sense for post-RA pseudos to strip all of these out).
2021-02-26 18:26:40 -05:00

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs -run-pass=si-post-ra-bundler %s -o - | FileCheck -check-prefix=GCN %s
---
name: bundle_memops
tracksRegLiveness: true
body: |
bb.0:
; GCN-LABEL: name: bundle_memops
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: S_NOP 0
; GCN: BUNDLE implicit-def $vgpr0, implicit-def $vgpr0_lo16, implicit-def $vgpr0_hi16, implicit-def $vgpr1, implicit-def $vgpr1_lo16, implicit-def $vgpr1_hi16, implicit undef $vgpr3_vgpr4, implicit $exec {
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: $vgpr1 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 4, 0, 0, 0, 0, implicit $exec
; GCN: }
; GCN: S_NOP 0
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: BUNDLE implicit-def $vgpr1, implicit-def $vgpr1_lo16, implicit-def $vgpr1_hi16, implicit-def $vgpr2, implicit-def $vgpr2_lo16, implicit-def $vgpr2_hi16, implicit-def $vgpr5, implicit-def $vgpr5_lo16, implicit-def $vgpr5_hi16, implicit undef $vgpr0_vgpr1, implicit $exec, implicit undef $vgpr3_vgpr4 {
; GCN: $vgpr1 = GLOBAL_LOAD_DWORD undef $vgpr0_vgpr1, 4, 0, 0, 0, 0, implicit $exec
; GCN: $vgpr2 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 4, 0, 0, 0, 0, implicit $exec
; GCN: $vgpr5 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
; GCN: BUNDLE implicit undef $vgpr3_vgpr4, implicit $vgpr1, implicit $exec, implicit $vgpr0 {
; GCN: GLOBAL_STORE_DWORD undef $vgpr3_vgpr4, $vgpr1, 0, 0, 0, 0, 0, implicit $exec
; GCN: GLOBAL_STORE_DWORD undef $vgpr3_vgpr4, $vgpr0, 4, 0, 0, 0, 0, implicit $exec
; GCN: }
; GCN: S_NOP 0
; GCN: BUNDLE implicit undef $vgpr3_vgpr4, implicit $vgpr1, implicit $exec, implicit $vgpr0 {
; GCN: GLOBAL_STORE_DWORD undef $vgpr3_vgpr4, $vgpr1, 0, 0, 0, 0, 0, implicit $exec
; GCN: GLOBAL_STORE_DWORD undef $vgpr3_vgpr4, $vgpr0, 4, 0, 0, 0, 0, implicit $exec
; GCN: GLOBAL_STORE_DWORD undef $vgpr3_vgpr4, $vgpr1, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
; GCN: S_NOP 0
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: S_NOP 0
; GCN: GLOBAL_STORE_DWORD undef $vgpr3_vgpr4, $vgpr0, 4, 0, 0, 0, 0, implicit $exec
; GCN: BUNDLE implicit-def $vgpr2, implicit-def $vgpr2_lo16, implicit-def $vgpr2_hi16, implicit-def $vgpr3, implicit-def $vgpr3_lo16, implicit-def $vgpr3_hi16, implicit $vgpr0, implicit $exec, implicit $vgpr1 {
; GCN: $vgpr2 = DS_READ_B32_gfx9 $vgpr0, 0, 0, implicit $exec
; GCN: $vgpr3 = DS_READ_B32_gfx9 $vgpr1, 0, 0, implicit $exec
; GCN: }
; GCN: BUNDLE implicit $vgpr0, implicit $vgpr2, implicit killed $m0, implicit $exec, implicit $vgpr3 {
; GCN: DS_WRITE_B32_gfx9 $vgpr0, $vgpr2, 0, 0, implicit killed $m0, implicit $exec
; GCN: DS_WRITE_B32_gfx9 $vgpr0, $vgpr3, 4, 0, implicit killed $m0, implicit $exec
; GCN: }
; GCN: S_NOP 0
; GCN: BUNDLE implicit-def $sgpr2, implicit-def $sgpr2_lo16, implicit-def $sgpr2_hi16, implicit-def $sgpr3, implicit-def $sgpr3_lo16, implicit-def $sgpr3_hi16, implicit undef $sgpr0_sgpr1, implicit undef $sgpr10 {
; GCN: $sgpr2 = S_LOAD_DWORD_IMM undef $sgpr0_sgpr1, 0, 0, 0
; GCN: $sgpr3 = S_LOAD_DWORD_SGPR undef $sgpr0_sgpr1, undef $sgpr10, 0, 0
; GCN: }
; GCN: BUNDLE implicit-def $vgpr2, implicit-def $vgpr2_lo16, implicit-def $vgpr2_hi16, implicit-def $vgpr3, implicit-def $vgpr3_lo16, implicit-def $vgpr3_hi16, implicit $vgpr0, implicit undef $sgpr0_sgpr1_sgpr2_sgpr3, implicit $sgpr2, implicit $exec, implicit $vgpr1 {
; GCN: $vgpr2 = BUFFER_LOAD_DWORD_OFFEN $vgpr0, undef $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr2, 0, 0, 0, 0, 0, 0, 0, implicit $exec
; GCN: $vgpr3 = BUFFER_LOAD_DWORD_OFFEN $vgpr1, undef $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr2, 0, 0, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
; GCN: BUNDLE implicit $vgpr0, implicit $vgpr2_vgpr3, implicit undef $sgpr0_sgpr1_sgpr2_sgpr3, implicit $exec {
; GCN: BUFFER_STORE_DWORD_ADDR64 $vgpr0, $vgpr2_vgpr3, undef $sgpr0_sgpr1_sgpr2_sgpr3, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec
; GCN: BUFFER_STORE_DWORD_ADDR64 $vgpr0, $vgpr2_vgpr3, undef $sgpr0_sgpr1_sgpr2_sgpr3, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
; GCN: BUNDLE implicit-def $vgpr2, implicit-def $vgpr2_lo16, implicit-def $vgpr2_hi16, implicit-def $vgpr3, implicit-def $vgpr3_lo16, implicit-def $vgpr3_hi16, implicit undef $vgpr4_vgpr5_vgpr6_vgpr7, implicit undef $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7, implicit $exec {
; GCN: $vgpr2 = IMAGE_LOAD_V1_V4 undef $vgpr4_vgpr5_vgpr6_vgpr7, undef $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7, 2, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (load 4)
; GCN: $vgpr3 = IMAGE_LOAD_V1_V4 undef $vgpr4_vgpr5_vgpr6_vgpr7, undef $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7, 2, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (load 4)
; GCN: }
; GCN: BUNDLE implicit undef $vgpr0_vgpr1_vgpr2_vgpr3, implicit $vgpr0_vgpr1, implicit undef $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7, implicit $exec {
; GCN: IMAGE_STORE_V4_V2 undef $vgpr0_vgpr1_vgpr2_vgpr3, $vgpr0_vgpr1, undef $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7, 15, -1, 1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (store 16)
; GCN: IMAGE_STORE_V4_V2 undef $vgpr0_vgpr1_vgpr2_vgpr3, $vgpr0_vgpr1, undef $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7, 15, -1, 1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (store 16)
; GCN: }
; GCN: S_NOP 0
; GCN: $sgpr64_sgpr65_sgpr66_sgpr67_sgpr68_sgpr69_sgpr70_sgpr71 = S_LOAD_DWORDX8_IMM undef $sgpr10_sgpr11, 464, 0, 0
; GCN: $sgpr68_sgpr69_sgpr70_sgpr71_sgpr72_sgpr73_sgpr74_sgpr75 = S_LOAD_DWORDX8_IMM undef $sgpr10_sgpr11, 128, 0, 0
; GCN: S_NOP 0
; GCN: BUNDLE implicit-def $vgpr2, implicit-def $vgpr2_lo16, implicit-def $vgpr2_hi16, implicit-def $vgpr3, implicit-def $vgpr3_lo16, implicit-def $vgpr3_hi16, implicit $vgpr0, implicit $exec, implicit $vgpr1 {
; GCN: $vgpr2 = DS_READ_B32_gfx9 $vgpr0, 0, 0, implicit $exec
; GCN: $vgpr3 = DS_READ_B32_gfx9 $vgpr1, 0, 0, implicit $exec
; GCN: }
$vgpr0 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
S_NOP 0
$vgpr0 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
$vgpr1 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 4, 0, 0, 0, 0, implicit $exec
S_NOP 0
$vgpr0 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
$vgpr1 = GLOBAL_LOAD_DWORD undef $vgpr0_vgpr1, 4, 0, 0, 0, 0, implicit $exec
$vgpr2 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 4, 0, 0, 0, 0, implicit $exec
$vgpr5 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
GLOBAL_STORE_DWORD undef $vgpr3_vgpr4, $vgpr1, 0, 0, 0, 0, 0, implicit $exec
GLOBAL_STORE_DWORD undef $vgpr3_vgpr4, $vgpr0, 4, 0, 0, 0, 0, implicit $exec
S_NOP 0
GLOBAL_STORE_DWORD undef $vgpr3_vgpr4, $vgpr1, 0, 0, 0, 0, 0, implicit $exec
GLOBAL_STORE_DWORD undef $vgpr3_vgpr4, $vgpr0, 4, 0, 0, 0, 0, implicit $exec
GLOBAL_STORE_DWORD undef $vgpr3_vgpr4, $vgpr1, 0, 0, 0, 0, 0, implicit $exec
S_NOP 0
$vgpr0 = GLOBAL_LOAD_DWORD undef $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
S_NOP 0
GLOBAL_STORE_DWORD undef $vgpr3_vgpr4, $vgpr0, 4, 0, 0, 0, 0, implicit $exec
$vgpr2 = DS_READ_B32_gfx9 $vgpr0, 0, 0, implicit $exec
$vgpr3 = DS_READ_B32_gfx9 $vgpr1, 0, 0, implicit $exec
DS_WRITE_B32_gfx9 $vgpr0, $vgpr2, 0, 0, implicit killed $m0, implicit $exec
DS_WRITE_B32_gfx9 $vgpr0, $vgpr3, 4, 0, implicit killed $m0, implicit $exec
S_NOP 0
$sgpr2 = S_LOAD_DWORD_IMM undef $sgpr0_sgpr1, 0, 0, 0
$sgpr3 = S_LOAD_DWORD_SGPR undef $sgpr0_sgpr1, undef $sgpr10, 0, 0
$vgpr2 = BUFFER_LOAD_DWORD_OFFEN $vgpr0, undef $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr2, 0, 0, 0, 0, 0, 0, 0, implicit $exec
$vgpr3 = BUFFER_LOAD_DWORD_OFFEN $vgpr1, undef $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr2, 0, 0, 0, 0, 0, 0, 0, implicit $exec
BUFFER_STORE_DWORD_ADDR64 $vgpr0, $vgpr2_vgpr3, undef $sgpr0_sgpr1_sgpr2_sgpr3, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec
BUFFER_STORE_DWORD_ADDR64 $vgpr0, $vgpr2_vgpr3, undef $sgpr0_sgpr1_sgpr2_sgpr3, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec
$vgpr2 = IMAGE_LOAD_V1_V4 undef $vgpr4_vgpr5_vgpr6_vgpr7, undef $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7, 2, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (load 4)
$vgpr3 = IMAGE_LOAD_V1_V4 undef $vgpr4_vgpr5_vgpr6_vgpr7, undef $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7, 2, -1, 0, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (load 4)
IMAGE_STORE_V4_V2 undef $vgpr0_vgpr1_vgpr2_vgpr3, $vgpr0_vgpr1, undef $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7, 15, -1, 1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (store 16)
IMAGE_STORE_V4_V2 undef $vgpr0_vgpr1_vgpr2_vgpr3, $vgpr0_vgpr1, undef $sgpr0_sgpr1_sgpr2_sgpr3_sgpr4_sgpr5_sgpr6_sgpr7, 15, -1, 1, 0, 0, 0, 0, 0, 0, 0, implicit $exec :: (store 16)
S_NOP 0
$sgpr64_sgpr65_sgpr66_sgpr67_sgpr68_sgpr69_sgpr70_sgpr71 = S_LOAD_DWORDX8_IMM undef $sgpr10_sgpr11, 464, 0, 0
$sgpr68_sgpr69_sgpr70_sgpr71_sgpr72_sgpr73_sgpr74_sgpr75 = S_LOAD_DWORDX8_IMM undef $sgpr10_sgpr11, 128, 0, 0
S_NOP 0
$vgpr2 = DS_READ_B32_gfx9 $vgpr0, 0, 0, implicit $exec
$vgpr3 = DS_READ_B32_gfx9 $vgpr1, 0, 0, implicit $exec
...
# Middle dbg_value should be bundled
---
name: bundle_dbg_value_0
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr3_vgpr4, $vgpr5_vgpr6
; GCN-LABEL: name: bundle_dbg_value_0
; GCN: liveins: $vgpr3_vgpr4, $vgpr5_vgpr6
; GCN: BUNDLE implicit-def $vgpr0, implicit-def $vgpr0_lo16, implicit-def $vgpr0_hi16, implicit-def $vgpr1, implicit-def $vgpr1_lo16, implicit-def $vgpr1_hi16, implicit $vgpr3_vgpr4, implicit $exec, implicit $vgpr5_vgpr6 {
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: DBG_VALUE internal $vgpr0, 0, 0
; GCN: $vgpr1 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
$vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
DBG_VALUE $vgpr0, 0, 0
$vgpr1 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
...
# Middle dbg_value should be bundled
---
name: bundle_dbg_value_1
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr3_vgpr4, $vgpr5_vgpr6, $vgpr1
; GCN-LABEL: name: bundle_dbg_value_1
; GCN: liveins: $vgpr3_vgpr4, $vgpr5_vgpr6, $vgpr1
; GCN: BUNDLE implicit-def $vgpr0, implicit-def $vgpr0_lo16, implicit-def $vgpr0_hi16, implicit-def $vgpr2, implicit-def $vgpr2_lo16, implicit-def $vgpr2_hi16, implicit $vgpr3_vgpr4, implicit $exec, implicit $vgpr1, implicit $vgpr5_vgpr6 {
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: DBG_VALUE internal $vgpr0, 0, 0
; GCN: DBG_VALUE $vgpr1, 0, 0
; GCN: $vgpr2 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
; GCN: DBG_VALUE $vgpr2, 0, 0
$vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
DBG_VALUE $vgpr0, 0, 0
DBG_VALUE $vgpr1, 0, 0
$vgpr2 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
DBG_VALUE $vgpr2, 0, 0
...
# Starting and ending dbg_values should not be in the bundle
---
name: bundle_dbg_value_2
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr3_vgpr4, $vgpr5_vgpr6, $vgpr1
; GCN-LABEL: name: bundle_dbg_value_2
; GCN: liveins: $vgpr3_vgpr4, $vgpr5_vgpr6, $vgpr1
; GCN: DBG_VALUE $vgpr1, 0, 0
; GCN: BUNDLE implicit-def $vgpr0, implicit-def $vgpr0_lo16, implicit-def $vgpr0_hi16, implicit-def $vgpr2, implicit-def $vgpr2_lo16, implicit-def $vgpr2_hi16, implicit $vgpr3_vgpr4, implicit $exec, implicit $vgpr5_vgpr6 {
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: DBG_VALUE internal $vgpr0, 0, 0
; GCN: $vgpr2 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
; GCN: DBG_VALUE $vgpr2, 0, 0
DBG_VALUE $vgpr1, 0, 0
$vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
DBG_VALUE $vgpr0, 0, 0
$vgpr2 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
DBG_VALUE $vgpr2, 0, 0
...
---
name: bundle_kill
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr3_vgpr4, $vgpr5_vgpr6
; GCN-LABEL: name: bundle_kill
; GCN: liveins: $vgpr3_vgpr4, $vgpr5_vgpr6
; GCN: $vgpr1 = V_MOV_B32_e32 0, implicit $exec
; GCN: BUNDLE implicit-def $vgpr0, implicit-def $vgpr0_lo16, implicit-def $vgpr0_hi16, implicit-def $vgpr2, implicit-def $vgpr2_lo16, implicit-def $vgpr2_hi16, implicit $vgpr3_vgpr4, implicit $exec, implicit $vgpr1, implicit $vgpr5_vgpr6 {
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: KILL $vgpr1
; GCN: $vgpr2 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
$vgpr1 = V_MOV_B32_e32 0, implicit $exec
$vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
KILL $vgpr1
$vgpr2 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
...
---
name: bundle_kill_def_in_bundle
tracksRegLiveness: true
body: |
bb.0:
liveins: $vgpr3_vgpr4, $vgpr5_vgpr6
; GCN-LABEL: name: bundle_kill_def_in_bundle
; GCN: liveins: $vgpr3_vgpr4, $vgpr5_vgpr6
; GCN: $vgpr1 = V_MOV_B32_e32 0, implicit $exec
; GCN: BUNDLE implicit-def $vgpr0, implicit-def $vgpr0_lo16, implicit-def $vgpr0_hi16, implicit-def $vgpr2, implicit-def $vgpr2_lo16, implicit-def $vgpr2_hi16, implicit $vgpr3_vgpr4, implicit $exec, implicit $vgpr5_vgpr6 {
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: KILL internal $vgpr0
; GCN: $vgpr2 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
$vgpr1 = V_MOV_B32_e32 0, implicit $exec
$vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
KILL $vgpr0
$vgpr2 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
...
# Before register allocation, KILL hints are inserted after potential soft
# clauses to hint the register allocator to not clobber the input
# registers. Kills that look like this should be erased.
---
name: post_bundle_kill
body: |
bb.0:
liveins: $vgpr3_vgpr4, $vgpr5_vgpr6
; GCN-LABEL: name: post_bundle_kill
; GCN: BUNDLE implicit-def $vgpr0, implicit-def $vgpr0_lo16, implicit-def $vgpr0_hi16, implicit-def $vgpr1, implicit-def $vgpr1_lo16, implicit-def $vgpr1_hi16, implicit $vgpr3_vgpr4, implicit $exec, implicit $vgpr5_vgpr6 {
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: $vgpr1 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
$vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
$vgpr1 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
KILL killed $vgpr3_vgpr4, killed $vgpr5_vgpr6
...
# Kill some other register not used in the bundle, should not be touched.
---
name: post_bundle_kill_other
body: |
bb.0:
liveins: $vgpr3_vgpr4, $vgpr5_vgpr6
; GCN-LABEL: name: post_bundle_kill_other
; GCN: $vgpr7 = V_MOV_B32_e32 0, implicit $exec
; GCN: BUNDLE implicit-def $vgpr0, implicit-def $vgpr0_lo16, implicit-def $vgpr0_hi16, implicit-def $vgpr1, implicit-def $vgpr1_lo16, implicit-def $vgpr1_hi16, implicit $vgpr3_vgpr4, implicit $exec, implicit $vgpr5_vgpr6 {
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: $vgpr1 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
; GCN: KILL killed $vgpr7
$vgpr7 = V_MOV_B32_e32 0, implicit $exec
$vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
$vgpr1 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
KILL killed $vgpr7
...
# Kill some other register not used in the bundle, but also some
# from the bundle.
---
name: post_bundle_kill_plus_other
body: |
bb.0:
liveins: $vgpr3_vgpr4, $vgpr5_vgpr6
; GCN-LABEL: name: post_bundle_kill_plus_other
; GCN: $vgpr7 = V_MOV_B32_e32 0, implicit $exec
; GCN: BUNDLE implicit-def $vgpr0, implicit-def $vgpr0_lo16, implicit-def $vgpr0_hi16, implicit-def $vgpr1, implicit-def $vgpr1_lo16, implicit-def $vgpr1_hi16, implicit $vgpr3_vgpr4, implicit $exec, implicit $vgpr5_vgpr6 {
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: $vgpr1 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
; GCN: KILL killed $vgpr7, killed $vgpr3
$vgpr7 = V_MOV_B32_e32 0, implicit $exec
$vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
$vgpr1 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
KILL killed $vgpr7, killed $vgpr3
...
---
name: post_bundle_multi_kill_0
body: |
bb.0:
liveins: $vgpr3_vgpr4, $vgpr5_vgpr6
; GCN-LABEL: name: post_bundle_multi_kill_0
; GCN: BUNDLE implicit-def $vgpr0, implicit-def $vgpr0_lo16, implicit-def $vgpr0_hi16, implicit-def $vgpr1, implicit-def $vgpr1_lo16, implicit-def $vgpr1_hi16, implicit $vgpr3_vgpr4, implicit $exec, implicit $vgpr5_vgpr6 {
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: $vgpr1 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
$vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
$vgpr1 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
KILL killed $vgpr3_vgpr4
KILL killed $vgpr5_vgpr6
...
---
name: post_bundle_multi_kill_1
body: |
bb.0:
liveins: $vgpr3_vgpr4, $vgpr5_vgpr6
; GCN-LABEL: name: post_bundle_multi_kill_1
; GCN: BUNDLE implicit-def $vgpr0, implicit-def $vgpr0_lo16, implicit-def $vgpr0_hi16, implicit-def $vgpr1, implicit-def $vgpr1_lo16, implicit-def $vgpr1_hi16, implicit $vgpr3_vgpr4, implicit $exec, implicit $vgpr5_vgpr6 {
; GCN: $vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
; GCN: $vgpr1 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
; GCN: }
$vgpr0 = GLOBAL_LOAD_DWORD $vgpr3_vgpr4, 0, 0, 0, 0, 0, implicit $exec
$vgpr1 = GLOBAL_LOAD_DWORD $vgpr5_vgpr6, 0, 0, 0, 0, 0, implicit $exec
KILL killed $vgpr3
KILL $vgpr4
KILL killed $vgpr5
KILL killed $vgpr6
...
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