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37997ebae5
The feature allows for conditional assembly, filling the entries of .amd_kernel_code_t etc. Symbols are defined with value 0 at the beginning of each kernel scope. After each register usage, the respective symbol is set to: value = max( value, ( register index + 1 ) ) Thus, at the end of scope the value represents a count of used registers. Kernel scopes begin at .amdgpu_hsa_kernel directive, end at the next .amdgpu_hsa_kernel (or EOF, whichever comes first). There is also dummy scope that lies from the beginning of source file til the first .amdgpu_hsa_kernel. Test added. Differential Revision: https://reviews.llvm.org/D27859 llvm-svn: 290608
60 lines
1.2 KiB
ArmAsm
60 lines
1.2 KiB
ArmAsm
// RUN: llvm-mc -arch=amdgcn %s 2>&1 | FileCheck %s
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.byte .kernel.sgpr_count
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// CHECK: .byte 0
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.byte .kernel.vgpr_count
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// CHECK: .byte 0
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v_mov_b32_e32 v5, s8
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s_endpgm
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.byte .kernel.sgpr_count
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// CHECK: .byte 9
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.byte .kernel.vgpr_count
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// CHECK: .byte 6
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.amdgpu_hsa_kernel K1
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K1:
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.byte .kernel.sgpr_count
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// CHECK: .byte 0
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.byte .kernel.vgpr_count
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// CHECK: .byte 0
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v_mov_b32_e32 v1, s86
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s_endpgm
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.byte .kernel.sgpr_count
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// CHECK: .byte 87
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.byte .kernel.vgpr_count
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// CHECK: .byte 2
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.amdgpu_hsa_kernel K2
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.byte .kernel.sgpr_count
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// CHECK: .byte 0
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.byte .kernel.vgpr_count
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// CHECK: .byte 0
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K2:
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s_load_dwordx8 s[16:23], s[0:1], 0x0
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v_mov_b32_e32 v0, v0
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s_endpgm
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.byte .kernel.sgpr_count
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// CHECK: .byte 24
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.byte .kernel.vgpr_count
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// CHECK: .byte 1
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.text
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.amdgpu_hsa_kernel K3
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K3:
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A = .kernel.vgpr_count
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v_mov_b32_e32 v[A], s0
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B = .kernel.vgpr_count
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v_mov_b32_e32 v[B], s0
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v_mov_b32_e32 v[B], v[A]
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C = .kernel.vgpr_count
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v_mov_b32_e32 v[C], v[A]
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D = .kernel.sgpr_count + 3 // align
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E = D + 4
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s_load_dwordx4 s[D:D+3], s[E:E+1], 0x0
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s_endpgm
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.byte .kernel.sgpr_count
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// CHECK: .byte 10
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.byte .kernel.vgpr_count
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// CHECK: .byte 3
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