derek.holloway
7502bf64a4
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93 lines
3.0 KiB
ArmAsm
93 lines
3.0 KiB
ArmAsm
// COM: A declared kernel immediately before a local return helper can reach
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// COM: the helper by fallthrough without defining its link pair. The return
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// COM: cannot be bounded even when its explicit caller is canonical.
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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: --expect-status ERROR 2>&1 \
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// RUN: | %FileCheck --check-prefixes=LOG,API %s
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// LOG: hotswap: s_set_pc_i64 at 0x8 is not a bounded return: declared entry at 0x0 falls through to function entry 0x4
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// LOG: hotswap: unresolved call target
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// LOG: hotswap: unresolved control-flow target disables NOP-sled emission,
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// LOG-SAME: trampoline coalescing, source relocation, and .text gateways
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// LOG: hotswap: error: no safe short-branch gateway for far site
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// API: RESULT: ERROR
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.amdgcn_target "amdgcn-amd-amdhsa--gfx1250"
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.text
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.globl fallthrough_kernel
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.protected fallthrough_kernel
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.type fallthrough_kernel,@function
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fallthrough_kernel:
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s_nop 0
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.Lfallthrough_kernel_end:
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.size fallthrough_kernel, .Lfallthrough_kernel_end-fallthrough_kernel
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.type local_return_helper,@function
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local_return_helper:
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s_nop 0
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s_set_pc_i64 s[0:1]
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.Llocal_return_helper_end:
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.size local_return_helper, .Llocal_return_helper_end-local_return_helper
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.globl test_pc_materialized_fallthrough_entry
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.p2align 8
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.type test_pc_materialized_fallthrough_entry,@function
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test_pc_materialized_fallthrough_entry:
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// Captured PC is .text+0x104 and the helper begins at .text+0x4.
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s_get_pc_i64 s[4:5]
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s_add_nc_u64 s[4:5], s[4:5], -256
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s_swap_pc_i64 s[0:1], s[4:5]
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ds_load_2addr_stride64_b64 v[0:3], v4 offset0:1 offset1:2
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s_wait_dscnt 0x0
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s_endpgm
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.Ltest_pc_materialized_fallthrough_entry_end:
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.size test_pc_materialized_fallthrough_entry, .Ltest_pc_materialized_fallthrough_entry_end-test_pc_materialized_fallthrough_entry
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.fill 64, 1, 0
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.rept 40000
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s_mov_b32 s0, s1
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.endr
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.rodata
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.p2align 8
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.amdhsa_kernel fallthrough_kernel
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.amdhsa_next_free_vgpr 0
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.amdhsa_next_free_sgpr 0
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.end_amdhsa_kernel
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.p2align 8
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.amdhsa_kernel test_pc_materialized_fallthrough_entry
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.amdhsa_next_free_vgpr 5
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.amdhsa_next_free_sgpr 6
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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: fallthrough_kernel
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.symbol: fallthrough_kernel.kd
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.sgpr_count: 0
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.vgpr_count: 0
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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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- .name: test_pc_materialized_fallthrough_entry
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.symbol: test_pc_materialized_fallthrough_entry.kd
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.sgpr_count: 6
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.vgpr_count: 5
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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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