# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 2
# RUN: llc -o - %s -mtriple=amdgcn-- -mcpu=fiji -verify-machineinstrs -run-pass=greedy,virtregrewriter | FileCheck %s
--- |
define amdgpu_kernel void @func0() #0 { ret void }
define amdgpu_kernel void @func1() #0 { ret void }
define amdgpu_kernel void @splitHoist() #0 { ret void }
attributes #0 = { "amdgpu-num-sgpr"="12" }
...
---
# Make sure we only get a single spill+reload even if liverange splitting
# created a sequence of multiple copy instructions.
name: func0
body: |
bb.0:
; CHECK-LABEL: name: func0
; CHECK: S_NOP 0, implicit-def renamable $sgpr0
; CHECK-NEXT: S_NOP 0, implicit-def renamable $sgpr3
; CHECK-NEXT: SI_SPILL_S128_SAVE renamable $sgpr0_sgpr1_sgpr2_sgpr3, %stack.0, implicit $exec, implicit $sp_reg :: (store (s128) into %stack.0, align 4, addrspace 5)
; CHECK-NEXT: S_NOP 0, implicit-def dead $sgpr0, implicit-def dead $sgpr1, implicit-def dead $sgpr2, implicit-def dead $sgpr3, implicit-def dead $sgpr4, implicit-def dead $sgpr5, implicit-def dead $sgpr6, implicit-def dead $sgpr7, implicit-def dead $sgpr8, implicit-def dead $sgpr9, implicit-def dead $sgpr10, implicit-def dead $sgpr11
; CHECK-NEXT: renamable $sgpr0_sgpr1_sgpr2_sgpr3 = SI_SPILL_S128_RESTORE %stack.0, implicit $exec, implicit $sp_reg :: (load (s128) from %stack.0, align 4, addrspace 5)
; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr0
; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr3
; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr0
; CHECK-NEXT: S_NOP 0, implicit killed renamable $sgpr3
S_NOP 0, implicit-def undef %0.sub0 : sgpr_128
S_NOP 0, implicit-def %0.sub3 : sgpr_128
; Clobber registers
S_NOP 0, implicit-def dead $sgpr0, implicit-def dead $sgpr1, implicit-def dead $sgpr2, implicit-def dead $sgpr3, implicit-def dead $sgpr4, implicit-def dead $sgpr5, implicit-def dead $sgpr6, implicit-def dead $sgpr7, implicit-def dead $sgpr8, implicit-def dead $sgpr9, implicit-def dead $sgpr10, implicit-def dead $sgpr11
S_NOP 0, implicit %0.sub0
S_NOP 0, implicit %0.sub3
S_NOP 0, implicit %0.sub0
S_NOP 0, implicit %0.sub3
...
---
# LiveRange splitting should split this into 2 intervals with the second getting
# allocated to sgpr0_sgpr1 and the first to something else so we see two copies
# in between for the two subregisters that are alive.
name: func1
tracksRegLiveness: true
body: |
bb.0:
liveins: $sgpr0, $sgpr1, $sgpr2
; CHECK-LABEL: name: func1
; CHECK: liveins: $sgpr0, $sgpr1, $sgpr2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: renamable $sgpr4 = COPY $sgpr0
; CHECK-NEXT: renamable $sgpr6 = COPY $sgpr2
; CHECK-NEXT: S_NOP 0, implicit-def dead $sgpr0, implicit-def dead $sgpr1
; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr4
; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr6
; CHECK-NEXT: renamable $sgpr0 = COPY killed renamable $sgpr4
; CHECK-NEXT: renamable $sgpr2 = COPY renamable $sgpr6
; CHECK-NEXT: S_NOP 0, implicit-def dead $sgpr4, implicit-def dead $sgpr5, implicit-def dead $sgpr6, implicit-def dead $sgpr7, implicit-def dead $sgpr8, implicit-def dead $sgpr9, implicit-def dead $sgpr10, implicit-def dead $sgpr11, implicit-def dead $sgpr12, implicit-def dead $sgpr13, implicit-def dead $sgpr14, implicit-def dead $sgpr15, implicit-def dead $vcc_lo, implicit-def dead $vcc_hi
; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr0
; CHECK-NEXT: S_NOP 0, implicit killed renamable $sgpr2
undef %0.sub0 : sgpr_128 = COPY $sgpr0
%0.sub2 = COPY $sgpr2
S_NOP 0, implicit-def dead $sgpr0, implicit-def dead $sgpr1
S_NOP 0, implicit %0.sub0
S_NOP 0, implicit %0.sub2
; Clobber everything but sgpr0-sgpr3
S_NOP 0, implicit-def dead $sgpr4, implicit-def dead $sgpr5, implicit-def dead $sgpr6, implicit-def dead $sgpr7, implicit-def dead $sgpr8, implicit-def dead $sgpr9, implicit-def dead $sgpr10, implicit-def dead $sgpr11, implicit-def dead $sgpr12, implicit-def dead $sgpr13, implicit-def dead $sgpr14, implicit-def dead $sgpr15, implicit-def dead $vcc_lo, implicit-def dead $vcc_hi
S_NOP 0, implicit %0.sub0
S_NOP 0, implicit %0.sub2
...
---
# Check that copy hoisting out of loops works. This mainly should not crash the
# compiler when it hoists a subreg copy sequence.
name: splitHoist
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: splitHoist
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_NOP 0, implicit-def renamable $sgpr0
; CHECK-NEXT: S_NOP 0, implicit-def renamable $sgpr3
; CHECK-NEXT: SI_SPILL_S128_SAVE renamable $sgpr0_sgpr1_sgpr2_sgpr3, %stack.0, implicit $exec, implicit $sp_reg :: (store (s128) into %stack.0, align 4, addrspace 5)
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.1, implicit undef $vcc
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: liveins: $sgpr0_sgpr1_sgpr2_sgpr3:0x00000000000000C3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr0
; CHECK-NEXT: S_NOP 0, implicit-def dead $sgpr0, implicit-def dead $sgpr1, implicit-def dead $sgpr2, implicit-def dead $sgpr3, implicit-def dead $sgpr4, implicit-def dead $sgpr5, implicit-def dead $sgpr6, implicit-def dead $sgpr7, implicit-def dead $sgpr8, implicit-def dead $sgpr9, implicit-def dead $sgpr10, implicit-def dead $sgpr11
; CHECK-NEXT: renamable $sgpr0_sgpr1_sgpr2_sgpr3 = SI_SPILL_S128_RESTORE %stack.0, implicit $exec, implicit $sp_reg :: (load (s128) from %stack.0, align 4, addrspace 5)
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.1, implicit undef $vcc
; CHECK-NEXT: S_BRANCH %bb.3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: liveins: $sgpr0_sgpr1_sgpr2_sgpr3:0x00000000000000C3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_NOP 0, implicit-def dead $sgpr0, implicit-def dead $sgpr1, implicit-def dead $sgpr2, implicit-def dead $sgpr3, implicit-def dead $sgpr4, implicit-def dead $sgpr5, implicit-def dead $sgpr6, implicit-def dead $sgpr7, implicit-def dead $sgpr8, implicit-def dead $sgpr9, implicit-def dead $sgpr10, implicit-def dead $sgpr11
; CHECK-NEXT: renamable $sgpr0_sgpr1_sgpr2_sgpr3 = SI_SPILL_S128_RESTORE %stack.0, implicit $exec, implicit $sp_reg :: (load (s128) from %stack.0, align 4, addrspace 5)
; CHECK-NEXT: S_BRANCH %bb.3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: liveins: $sgpr0_sgpr1_sgpr2_sgpr3:0x00000000000000C3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr0
; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr3
; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr0
; CHECK-NEXT: S_NOP 0, implicit killed renamable $sgpr3
bb.0:
successors: %bb.1, %bb.2
S_NOP 0, implicit-def undef %0.sub0 : sgpr_128
S_NOP 0, implicit-def %0.sub3 : sgpr_128
S_CBRANCH_VCCNZ %bb.1, implicit undef $vcc
S_BRANCH %bb.2
bb.1:
successors: %bb.1, %bb.3
S_NOP 0, implicit %0.sub0
; Clobber registers
S_NOP 0, implicit-def dead $sgpr0, implicit-def dead $sgpr1, implicit-def dead $sgpr2, implicit-def dead $sgpr3, implicit-def dead $sgpr4, implicit-def dead $sgpr5, implicit-def dead $sgpr6, implicit-def dead $sgpr7, implicit-def dead $sgpr8, implicit-def dead $sgpr9, implicit-def dead $sgpr10, implicit-def dead $sgpr11
S_CBRANCH_VCCNZ %bb.1, implicit undef $vcc
S_BRANCH %bb.3
bb.2:
successors: %bb.3
; Clobber registers
S_NOP 0, implicit-def dead $sgpr0, implicit-def dead $sgpr1, implicit-def dead $sgpr2, implicit-def dead $sgpr3, implicit-def dead $sgpr4, implicit-def dead $sgpr5, implicit-def dead $sgpr6, implicit-def dead $sgpr7, implicit-def dead $sgpr8, implicit-def dead $sgpr9, implicit-def dead $sgpr10, implicit-def dead $sgpr11
S_BRANCH %bb.3
bb.3:
S_NOP 0, implicit %0.sub0
S_NOP 0, implicit %0.sub3
S_NOP 0, implicit %0.sub0
S_NOP 0, implicit %0.sub3
...
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