derek.holloway
7502bf64a4
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58 lines
1.9 KiB
ArmAsm
58 lines
1.9 KiB
ArmAsm
// COM: Test WMMA hazard with pre-existing v_nops: 3 v_nops already present
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// COM: between WMMA (needs 8) and overlapping VALU. Should insert 5 more.
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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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// COM: Verify the patched layout. v_wmma_i32_16x16x64_iu8 needs 8 v_nops on
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// COM: A0. The kernel body has 3 pre-existing v_nops before the hazardous
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// COM: VALU; the patch must keep them, replace the VALU with an s_branch
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// COM: to a trampoline, and emit exactly 5 v_nops (the deficit = 8 - 3)
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// COM: immediately before the relocated VALU. CHECK-NEXT pins the in-body
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// COM: nop count and CHECK-COUNT-5 + CHECK-NEXT pin the trampoline count.
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// RUN: %llvm-objdump -d %t.out.elf | %FileCheck --check-prefix=DISASM %s
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// DISASM: v_wmma_i32_16x16x64_iu8
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// DISASM-NEXT: v_nop
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// DISASM-NEXT: v_nop
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// DISASM-NEXT: v_nop
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// DISASM-NEXT: s_branch
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// DISASM: s_endpgm
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// DISASM-COUNT-5: v_nop
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// DISASM-NEXT: v_add_f32
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// COM: Idempotency
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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: --output %t.out2.elf \
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// RUN: | %FileCheck --check-prefix=API2 %s
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// API2: RESULT: SUCCESS
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// RUN: cmp %t.out.elf %t.out2.elf
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.amdgcn_target "amdgcn-amd-amdhsa--gfx1250"
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.text
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.globl test_wmma_partial
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.p2align 8
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.type test_wmma_partial,@function
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test_wmma_partial:
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v_wmma_i32_16x16x64_iu8 v[16:23], v[0:7], v[8:15], v[16:23]
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v_nop
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v_nop
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v_nop
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// Only 3 v_nops -- need 8 for A0, so 5 more should be inserted
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v_add_f32 v16, v0, v1
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s_endpgm
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.Ltest_wmma_partial_end:
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.size test_wmma_partial, .Ltest_wmma_partial_end-test_wmma_partial
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.rodata
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.p2align 8
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.amdhsa_kernel test_wmma_partial
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.amdhsa_next_free_vgpr 24
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.amdhsa_next_free_sgpr 2
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.end_amdhsa_kernel
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