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llvm-project/llvm/test/CodeGen/AMDGPU/huge-private-buffer.ll

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AMDGPU: Don't use MUBUF vaddr if address may overflow Effectively revert r263964. Before we would not allow this if vaddr was not known to be positive. llvm-svn: 318240
2017-11-15 08:45:43 +08:00
; RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=GCN %s
AMDGPU: Correct maximum possible private allocation size We were assuming a much larger possible per-wave visible stack allocation than is possible: https://github.com/RadeonOpenCompute/ROCR-Runtime/blob/faa3ae51388517353afcdaf9c16621f879ef0a59/src/core/runtime/amd_gpu_agent.cpp#L70 Based on this, we can assume the high 15 bits of a frame index or sret are 0. The frame index value is the per-lane offset, so the maximum frame index value is MAX_WAVE_SCRATCH / wavesize. Remove the corresponding subtarget feature and option that made this configurable. llvm-svn: 361541
2019-05-24 03:38:14 +08:00
; GCN-LABEL: {{^}}scratch_buffer_known_high_masklo16:
; GCN: v_mov_b32_e32 [[FI:v[0-9]+]], 4
; GCN: v_and_b32_e32 [[MASKED:v[0-9]+]], 0xfffc, [[FI]]
; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[MASKED]]
define amdgpu_kernel void @scratch_buffer_known_high_masklo16() #0 {
%alloca = alloca i32, align 4, addrspace(5)
store volatile i32 0, i32 addrspace(5)* %alloca
%toint = ptrtoint i32 addrspace(5)* %alloca to i32
%masked = and i32 %toint, 65535
store volatile i32 %masked, i32 addrspace(1)* undef
ret void
}
; GCN-LABEL: {{^}}scratch_buffer_known_high_masklo17:
AMDGPU: Don't use MUBUF vaddr if address may overflow Effectively revert r263964. Before we would not allow this if vaddr was not known to be positive. llvm-svn: 318240
2017-11-15 08:45:43 +08:00
; GCN: v_mov_b32_e32 [[FI:v[0-9]+]], 4
; GCN-NOT: [[FI]]
; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[FI]]
AMDGPU: Correct maximum possible private allocation size We were assuming a much larger possible per-wave visible stack allocation than is possible: https://github.com/RadeonOpenCompute/ROCR-Runtime/blob/faa3ae51388517353afcdaf9c16621f879ef0a59/src/core/runtime/amd_gpu_agent.cpp#L70 Based on this, we can assume the high 15 bits of a frame index or sret are 0. The frame index value is the per-lane offset, so the maximum frame index value is MAX_WAVE_SCRATCH / wavesize. Remove the corresponding subtarget feature and option that made this configurable. llvm-svn: 361541
2019-05-24 03:38:14 +08:00
define amdgpu_kernel void @scratch_buffer_known_high_masklo17() #0 {
[AMDGPU] Switch to the new addr space mapping by default This requires corresponding clang change. Differential Revision: https://reviews.llvm.org/D40955 llvm-svn: 324101
2018-02-03 00:07:16 +08:00
%alloca = alloca i32, align 4, addrspace(5)
store volatile i32 0, i32 addrspace(5)* %alloca
%toint = ptrtoint i32 addrspace(5)* %alloca to i32
AMDGPU: Correct maximum possible private allocation size We were assuming a much larger possible per-wave visible stack allocation than is possible: https://github.com/RadeonOpenCompute/ROCR-Runtime/blob/faa3ae51388517353afcdaf9c16621f879ef0a59/src/core/runtime/amd_gpu_agent.cpp#L70 Based on this, we can assume the high 15 bits of a frame index or sret are 0. The frame index value is the per-lane offset, so the maximum frame index value is MAX_WAVE_SCRATCH / wavesize. Remove the corresponding subtarget feature and option that made this configurable. llvm-svn: 361541
2019-05-24 03:38:14 +08:00
%masked = and i32 %toint, 131071
AMDGPU: Don't use MUBUF vaddr if address may overflow Effectively revert r263964. Before we would not allow this if vaddr was not known to be positive. llvm-svn: 318240
2017-11-15 08:45:43 +08:00
store volatile i32 %masked, i32 addrspace(1)* undef
ret void
}
AMDGPU: Correct maximum possible private allocation size We were assuming a much larger possible per-wave visible stack allocation than is possible: https://github.com/RadeonOpenCompute/ROCR-Runtime/blob/faa3ae51388517353afcdaf9c16621f879ef0a59/src/core/runtime/amd_gpu_agent.cpp#L70 Based on this, we can assume the high 15 bits of a frame index or sret are 0. The frame index value is the per-lane offset, so the maximum frame index value is MAX_WAVE_SCRATCH / wavesize. Remove the corresponding subtarget feature and option that made this configurable. llvm-svn: 361541
2019-05-24 03:38:14 +08:00
; GCN-LABEL: {{^}}scratch_buffer_known_high_mask18:
AMDGPU: Don't use MUBUF vaddr if address may overflow Effectively revert r263964. Before we would not allow this if vaddr was not known to be positive. llvm-svn: 318240
2017-11-15 08:45:43 +08:00
; GCN: v_mov_b32_e32 [[FI:v[0-9]+]], 4
AMDGPU: Correct maximum possible private allocation size We were assuming a much larger possible per-wave visible stack allocation than is possible: https://github.com/RadeonOpenCompute/ROCR-Runtime/blob/faa3ae51388517353afcdaf9c16621f879ef0a59/src/core/runtime/amd_gpu_agent.cpp#L70 Based on this, we can assume the high 15 bits of a frame index or sret are 0. The frame index value is the per-lane offset, so the maximum frame index value is MAX_WAVE_SCRATCH / wavesize. Remove the corresponding subtarget feature and option that made this configurable. llvm-svn: 361541
2019-05-24 03:38:14 +08:00
; GCN-NOT: [[FI]]
; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, [[FI]]
define amdgpu_kernel void @scratch_buffer_known_high_mask18() #0 {
[AMDGPU] Switch to the new addr space mapping by default This requires corresponding clang change. Differential Revision: https://reviews.llvm.org/D40955 llvm-svn: 324101
2018-02-03 00:07:16 +08:00
%alloca = alloca i32, align 4, addrspace(5)
store volatile i32 0, i32 addrspace(5)* %alloca
%toint = ptrtoint i32 addrspace(5)* %alloca to i32
AMDGPU: Correct maximum possible private allocation size We were assuming a much larger possible per-wave visible stack allocation than is possible: https://github.com/RadeonOpenCompute/ROCR-Runtime/blob/faa3ae51388517353afcdaf9c16621f879ef0a59/src/core/runtime/amd_gpu_agent.cpp#L70 Based on this, we can assume the high 15 bits of a frame index or sret are 0. The frame index value is the per-lane offset, so the maximum frame index value is MAX_WAVE_SCRATCH / wavesize. Remove the corresponding subtarget feature and option that made this configurable. llvm-svn: 361541
2019-05-24 03:38:14 +08:00
%masked = and i32 %toint, 262143
AMDGPU: Don't use MUBUF vaddr if address may overflow Effectively revert r263964. Before we would not allow this if vaddr was not known to be positive. llvm-svn: 318240
2017-11-15 08:45:43 +08:00
store volatile i32 %masked, i32 addrspace(1)* undef
ret void
}
attributes #0 = { nounwind }