derek.holloway
7502bf64a4
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142 lines
7.3 KiB
YAML
142 lines
7.3 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 2
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# RUN: llc -o - %s -mtriple=amdgcn-- -mcpu=fiji -verify-machineinstrs -run-pass=greedy,virtregrewriter | FileCheck %s
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--- |
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define amdgpu_kernel void @func0() #0 { ret void }
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define amdgpu_kernel void @func1() #0 { ret void }
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define amdgpu_kernel void @splitHoist() #0 { ret void }
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attributes #0 = { "amdgpu-num-sgpr"="12" }
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...
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---
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# Make sure we only get a single spill+reload even if liverange splitting
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# created a sequence of multiple copy instructions.
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name: func0
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body: |
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bb.0:
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; CHECK-LABEL: name: func0
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; CHECK: S_NOP 0, implicit-def renamable $sgpr0
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; CHECK-NEXT: S_NOP 0, implicit-def renamable $sgpr3
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; 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)
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; 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
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; 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)
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; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr0
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; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr3
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; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr0
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; CHECK-NEXT: S_NOP 0, implicit killed renamable $sgpr3
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S_NOP 0, implicit-def undef %0.sub0 : sgpr_128
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S_NOP 0, implicit-def %0.sub3 : sgpr_128
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; Clobber registers
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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
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S_NOP 0, implicit %0.sub0
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S_NOP 0, implicit %0.sub3
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S_NOP 0, implicit %0.sub0
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S_NOP 0, implicit %0.sub3
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...
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---
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# LiveRange splitting should split this into 2 intervals with the second getting
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# allocated to sgpr0_sgpr1 and the first to something else so we see two copies
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# in between for the two subregisters that are alive.
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# CHECK-LABEL: name: func1
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# CHECK: [[REG0:\$sgpr[0-9]+]] = COPY $sgpr0
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# CHECK: [[REG1:\$sgpr[0-9]+]] = COPY $sgpr2
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# CHECK: S_NOP 0
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# CHECK: S_NOP 0, implicit renamable [[REG0]]
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# CHECK: S_NOP 0, implicit renamable [[REG1]]
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# CHECK: $sgpr0 = COPY killed renamable [[REG0]]
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# CHECK: $sgpr2 = COPY renamable [[REG1]]
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# CHECK: S_NOP
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# CHECK: S_NOP 0, implicit renamable $sgpr0
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# CHECK: S_NOP 0, implicit killed renamable $sgpr2
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name: func1
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tracksRegLiveness: true
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body: |
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bb.0:
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liveins: $sgpr0, $sgpr1, $sgpr2
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undef %0.sub0 : sgpr_128 = COPY $sgpr0
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%0.sub2 = COPY $sgpr2
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S_NOP 0, implicit-def dead $sgpr0, implicit-def dead $sgpr1
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S_NOP 0, implicit %0.sub0
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S_NOP 0, implicit %0.sub2
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; Clobber everything but sgpr0-sgpr3
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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
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S_NOP 0, implicit %0.sub0
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S_NOP 0, implicit %0.sub2
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...
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---
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# Check that copy hoisting out of loops works. This mainly should not crash the
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# compiler when it hoists a subreg copy sequence.
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name: splitHoist
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tracksRegLiveness: true
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body: |
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; CHECK-LABEL: name: splitHoist
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; CHECK: bb.0:
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; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: S_NOP 0, implicit-def renamable $sgpr0
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; CHECK-NEXT: S_NOP 0, implicit-def renamable $sgpr3
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; 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)
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; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.1, implicit undef $vcc
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; CHECK-NEXT: S_BRANCH %bb.2
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.1:
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; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.3(0x40000000)
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; CHECK-NEXT: liveins: $sgpr0_sgpr1_sgpr2_sgpr3:0x00000000000000C3
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr0
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; 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
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; 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)
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; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.1, implicit undef $vcc
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; CHECK-NEXT: S_BRANCH %bb.3
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.2:
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; CHECK-NEXT: successors: %bb.3(0x80000000)
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; CHECK-NEXT: liveins: $sgpr0_sgpr1_sgpr2_sgpr3:0x00000000000000C3
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; CHECK-NEXT: {{ $}}
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; 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
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; 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)
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; CHECK-NEXT: S_BRANCH %bb.3
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.3:
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; CHECK-NEXT: liveins: $sgpr0_sgpr1_sgpr2_sgpr3:0x00000000000000C3
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr0
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; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr3
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; CHECK-NEXT: S_NOP 0, implicit renamable $sgpr0
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; CHECK-NEXT: S_NOP 0, implicit killed renamable $sgpr3
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bb.0:
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successors: %bb.1, %bb.2
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S_NOP 0, implicit-def undef %0.sub0 : sgpr_128
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S_NOP 0, implicit-def %0.sub3 : sgpr_128
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S_CBRANCH_VCCNZ %bb.1, implicit undef $vcc
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S_BRANCH %bb.2
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bb.1:
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successors: %bb.1, %bb.3
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S_NOP 0, implicit %0.sub0
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; Clobber registers
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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
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S_CBRANCH_VCCNZ %bb.1, implicit undef $vcc
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S_BRANCH %bb.3
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bb.2:
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successors: %bb.3
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; Clobber registers
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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
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S_BRANCH %bb.3
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bb.3:
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S_NOP 0, implicit %0.sub0
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S_NOP 0, implicit %0.sub3
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S_NOP 0, implicit %0.sub0
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S_NOP 0, implicit %0.sub3
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...
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