derek.holloway
7502bf64a4
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81 lines
2.5 KiB
ArmAsm
81 lines
2.5 KiB
ArmAsm
// COM: WMMA-split shares emitToTrampoline with the other patch families. A
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// COM: split site beyond s_branch's +-128 KB reach uses SGPR-backed set-PC
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// COM: sequences on both edges and never executes s_add_pc_i64. External NOP
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// COM: space supplies the forward gateway; non-NOP filler forces the far case.
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// RUN: %clang -target amdgcn-amd-amdhsa -mcpu=gfx1250 -nostdlib %s -o %t.elf
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// RUN: 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 \
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// RUN: | %FileCheck --check-prefix=API %s
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// API: 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 %s
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// COM: The site redirects through a safe gateway to two K=64 halves and
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// COM: returns through the SCC-neutral set-PC sequence.
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// DISASM-LABEL: <test_wsplit_far>:
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// DISASM-NEXT: s_branch
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// DISASM: 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: v_wmma_f32_16x16x64_fp8_fp8
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// DISASM-NEXT: v_wmma_f32_16x16x64_fp8_fp8
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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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// COM: Idempotency: rewriting the output again must be a no-op.
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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 \
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// RUN: | %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 test_wsplit_far
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.p2align 8
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.type test_wsplit_far,@function
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test_wsplit_far:
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v_wmma_f32_16x16x128_fp8_fp8 v[32:39], v[0:15], v[16:31], v[32:39]
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s_endpgm
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.size test_wsplit_far, .-test_wsplit_far
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// Safe external gateway space after the kernel's no-fallthrough terminator.
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.rept 8
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s_nop 0
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.endr
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// ~160 KB of non-NOP filler so the appended trampoline pool is beyond
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// s_branch's +-128 KB reach from the WMMA above (forces the long-branch path).
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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 test_wsplit_far
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.amdhsa_next_free_vgpr 40
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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: test_wsplit_far
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.symbol: test_wsplit_far.kd
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.sgpr_count: 0
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.vgpr_count: 40
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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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