derek.holloway
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84 lines
3.1 KiB
LLVM
84 lines
3.1 KiB
LLVM
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -amdgpu-enable-object-linking < %s | FileCheck -check-prefixes=ASM %s --implicit-check-not=.amdgpu_num_agpr
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; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -amdgpu-enable-object-linking -filetype=obj < %s | llvm-readobj -r --syms --sections - | FileCheck -check-prefixes=ELF %s
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; Test that with object linking enabled, external LDS declarations produce
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; @abs32@lo relocations, SHN_AMDGPU_LDS symbols, .amdgpu_lds directives,
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; and .amdgpu_use edges in the .amdgpu.info section. Covers multiple LDS
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; variables with different sizes and alignments (including zero-sized dynamic
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; LDS), usage from both kernels and device functions, and
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; group_segment_fixed_size = 0 (linker patches via binary patching).
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@lds_large = external addrspace(3) global [256 x i8], align 16
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@lds_small = external addrspace(3) global [128 x i8], align 4
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@lds_dynamic = external addrspace(3) global [0 x i8], align 8
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; Instruction-level relocation checks.
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; ASM-LABEL: {{^}}device_func:
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; ASM: v_add_u32_e32 v{{[0-9]+}}, lds_large@abs32@lo, v{{[0-9]+}}
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; ASM-LABEL: {{^}}test_kernel:
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; ASM-DAG: s_add_i32 s{{[0-9]+}}, s{{[0-9]+}}, lds_small@abs32@lo
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; ASM-DAG: s_add_i32 s{{[0-9]+}}, s{{[0-9]+}}, lds_dynamic@abs32@lo
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; .amdgpu.info section with LDS use edges.
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; ASM-DAG: .amdgpu_info device_func
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; ASM-DAG: .amdgpu_flags {{[0-9]+}}
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; ASM-DAG: .amdgpu_num_vgpr {{[0-9]+}}
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; ASM-DAG: .amdgpu_num_sgpr {{[0-9]+}}
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; ASM-DAG: .amdgpu_private_segment_size {{[0-9]+}}
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; ASM-DAG: .amdgpu_use lds_large
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; ASM-DAG: .end_amdgpu_info
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; ASM-DAG: .amdgpu_info test_kernel
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; ASM-DAG: .amdgpu_flags {{[0-9]+}}
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; ASM-DAG: .amdgpu_num_vgpr {{[0-9]+}}
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; ASM-DAG: .amdgpu_num_sgpr {{[0-9]+}}
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; ASM-DAG: .amdgpu_private_segment_size {{[0-9]+}}
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; ASM-DAG: .amdgpu_use lds_dynamic
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; ASM-DAG: .amdgpu_use lds_small
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; ASM-DAG: .amdgpu_call device_func
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; ASM-DAG: .end_amdgpu_info
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; SHN_AMDGPU_LDS directives.
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; ASM-DAG: .amdgpu_lds lds_large, 256, 16
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; ASM-DAG: .amdgpu_lds lds_small, 128, 4
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; ASM-DAG: .amdgpu_lds lds_dynamic, 0, 8
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; ASM: .group_segment_fixed_size: 0
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; .amdgpu.info section exists.
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; ELF: Section {
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; ELF: Name: .amdgpu.info
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; ELF: Type: SHT_PROGBITS
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; ELF: Flags [
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; ELF: SHF_EXCLUDE
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; Relocations.
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; ELF-DAG: R_AMDGPU_ABS32_LO lds_large
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; ELF-DAG: R_AMDGPU_ABS32_LO lds_small
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; ELF-DAG: R_AMDGPU_ABS32_LO lds_dynamic
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; ELF-DAG: R_AMDGPU_ABS64 device_func
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; ELF-DAG: R_AMDGPU_ABS64 test_kernel
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; ELF-DAG: R_AMDGPU_ABS64 lds_large
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; ELF-DAG: R_AMDGPU_ABS64 lds_small
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; ELF-DAG: R_AMDGPU_ABS64 lds_dynamic
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; SHN_AMDGPU_LDS symbols.
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; ELF-DAG: Name: lds_large
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; ELF-DAG: Name: lds_small
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; ELF-DAG: Name: lds_dynamic
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define void @device_func(i32 %idx) {
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%gep = getelementptr [256 x i8], ptr addrspace(3) @lds_large, i32 0, i32 %idx
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store i8 1, ptr addrspace(3) %gep
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ret void
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}
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define amdgpu_kernel void @test_kernel(i32 %idx) {
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%gep1 = getelementptr [128 x i8], ptr addrspace(3) @lds_small, i32 0, i32 %idx
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store i8 2, ptr addrspace(3) %gep1
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%gep2 = getelementptr [0 x i8], ptr addrspace(3) @lds_dynamic, i32 0, i32 %idx
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store i8 3, ptr addrspace(3) %gep2
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call void @device_func(i32 %idx)
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ret void
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}
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