derek.holloway
7502bf64a4
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88 lines
2.6 KiB
ArmAsm
88 lines
2.6 KiB
ArmAsm
// COM: A far required DS2 rewrite has exactly one safe 16-byte external
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// COM: gateway. The gfx1250 SCC-neutral set-PC sequence encodes in 16 bytes
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// COM: for this forward displacement, so planning must use its MC-encoded
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// COM: size instead of requiring the 20-byte worst-case reservation.
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// RUN: %clang -target amdgcn-amd-amdhsa -mcpu=gfx1250 -nostdlib %s -o %t.elf
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// RUN: env AMD_COMGR_EMIT_VERBOSE_LOGS=1 hotswap-rewrite %t.elf \
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// RUN: amdgcn-amd-amdhsa--gfx1250 amdgcn-amd-amdhsa--gfx1250 \
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// RUN: --output %t.out.elf 2>&1 | %FileCheck --check-prefix=LOG %s
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// LOG: hotswap: assigned 1 SCC-neutral forward gateway(s)
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// LOG: RESULT: SUCCESS
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// RUN: %llvm-objdump -d %t.out.elf | %FileCheck --check-prefix=DISASM \
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// RUN: --implicit-check-not=s_add_pc_i64 \
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// RUN: --implicit-check-not=s_add_co_u32 \
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// RUN: --implicit-check-not=s_add_co_ci_u32 %s
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// RUN: %llvm-readelf --notes %t.out.elf | %FileCheck --check-prefix=META %s
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// DISASM-LABEL: <compact_gateway>:
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// DISASM-NEXT: s_branch
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// DISASM-NEXT: s_nop
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// DISASM-LABEL: <gateway_barrier>:
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// DISASM-NEXT: s_endpgm
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// DISASM-NEXT: s_get_pc_i64 s[0:1]
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// DISASM-NEXT: s_add_nc_u64 s[0:1], s[0:1],
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// DISASM-NEXT: s_set_pc_i64 s[0:1]
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// DISASM: ds_load_b32 v0, v2 offset:256
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// DISASM-NEXT: ds_load_b32 v1, v2 offset:768
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// DISASM-NEXT: s_wait_dscnt 0x0
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// DISASM-NEXT: s_get_pc_i64 s[0:1]
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// DISASM-NEXT: s_add_nc_u64 s[0:1], s[0:1],
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// DISASM-NEXT: s_set_pc_i64 s[0:1]
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// META: .name: compact_gateway
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// META: .sgpr_count: 4
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// RUN: hotswap-rewrite %t.out.elf \
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// RUN: amdgcn-amd-amdhsa--gfx1250 amdgcn-amd-amdhsa--gfx1250 \
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// RUN: --check-idempotent | %FileCheck --check-prefix=IDEM %s
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// IDEM: IDEMPOTENT: YES
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.amdgcn_target "amdgcn-amd-amdhsa--gfx1250"
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.text
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.globl compact_gateway
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.p2align 8
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.type compact_gateway,@function
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compact_gateway:
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ds_load_2addr_stride64_b32 v[0:1], v2 offset0:1 offset1:3
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s_cbranch_scc1 .Lexit
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s_endpgm
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.Lexit:
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s_endpgm
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.size compact_gateway, .-compact_gateway
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.type gateway_barrier,@function
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gateway_barrier:
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s_endpgm
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.size gateway_barrier, .-gateway_barrier
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.fill 16, 1, 0
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.rept 40000
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s_mov_b32 s4, s5
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.endr
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.rodata
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.p2align 8
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.amdhsa_kernel compact_gateway
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.amdhsa_next_free_vgpr 3
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.amdhsa_next_free_sgpr 0
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.end_amdhsa_kernel
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.amdgpu_metadata
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amdhsa.version:
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- 3
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- 0
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amdhsa.kernels:
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- .name: compact_gateway
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.symbol: compact_gateway.kd
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.sgpr_count: 0
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.vgpr_count: 3
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.kernarg_segment_size: 0
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.group_segment_fixed_size: 0
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.private_segment_fixed_size: 0
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.kernarg_segment_align: 8
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.wavefront_size: 64
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.max_flat_workgroup_size: 256
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.end_amdgpu_metadata
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