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llvm-project/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.groupstaticsize.ll

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AMDGPU: Write LDS objects out as global symbols in code generation Summary: The symbols use the processor-specific SHN_AMDGPU_LDS section index introduced with a previous change. The linker is then expected to resolve relocations, which are also emitted. Initially disabled for HSA and PAL environments until they have caught up in terms of linker and runtime loader. Some notes: - The llvm.amdgcn.groupstaticsize intrinsics can no longer be lowered to a constant at compile times, which means some tests can no longer be applied. The current "solution" is a terrible hack, but the intrinsic isn't used by Mesa, so we can keep it for now. - We no longer know the full LDS size per kernel at compile time, which means that we can no longer generate a relevant error message at compile time. It would be possible to add a check for the size of individual variables, but ultimately the linker will have to perform the final check. Change-Id: If66dbf33fccfbf3609aefefa2558ac0850d42275 Reviewers: arsenm, rampitec, t-tye, b-sumner, jsjodin Subscribers: qcolombet, kzhuravl, jvesely, wdng, yaxunl, dstuttard, tpr, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D61494 llvm-svn: 364297
2019-06-25 19:52:30 +08:00
; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck -check-prefixes=CHECK,NOHSA %s
; RUN: llc -mtriple=amdgcn--amdhsa -mcpu=kaveri -verify-machineinstrs < %s | FileCheck -check-prefixes=CHECK,HSA %s
; RUN: llc -mtriple=amdgcn--amdhsa -mcpu=fiji -verify-machineinstrs < %s | FileCheck -check-prefixes=CHECK,HSA %s
AMDGPU/SI: Implement GroupStaticSize Intrinsic for Dynamic LDS Summary: Static LDS size is saved in MachineFunctionInfo::LDSSize, We define a pseudo instruction with usesCustomInserter bit set. Then, in EmitInstrWithCustomInserter, we replace this pseudo instruction with a mov of MachineFunctionInfo::LDSSize. Reviewers: arsenm tstellarAMD Subscribers llvm-commits, arsenm Differential Revision: http://reviews.llvm.org/D18064 llvm-svn: 263563
2016-03-16 01:28:44 +08:00
AMDGPU/GlobalISel: Select llvm.amdgcn.groupstaticsize Previously, it would successfully select and assert if not HSA or PAL when expanding the pseudoinstruction. We don't need the pseudoinstruction anymore since we know the total size after legalization.
2020-07-27 03:43:48 +08:00
; RUN: llc -global-isel -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck -check-prefixes=CHECK,NOHSA %s
; RUN: llc -global-isel -mtriple=amdgcn--amdhsa -mcpu=kaveri -verify-machineinstrs < %s | FileCheck -check-prefixes=CHECK,HSA %s
; RUN: llc -global-isel -mtriple=amdgcn--amdhsa -mcpu=fiji -verify-machineinstrs < %s | FileCheck -check-prefixes=CHECK,HSA %s
AMDGPU/SI: Implement GroupStaticSize Intrinsic for Dynamic LDS Summary: Static LDS size is saved in MachineFunctionInfo::LDSSize, We define a pseudo instruction with usesCustomInserter bit set. Then, in EmitInstrWithCustomInserter, we replace this pseudo instruction with a mov of MachineFunctionInfo::LDSSize. Reviewers: arsenm tstellarAMD Subscribers llvm-commits, arsenm Differential Revision: http://reviews.llvm.org/D18064 llvm-svn: 263563
2016-03-16 01:28:44 +08:00
@lds0 = addrspace(3) global [512 x float] undef, align 4
@lds1 = addrspace(3) global [256 x float] undef, align 4
AMDGPU: Fix groupstaticsize for large LDS The size can exceed s_movk_i32's limit, and we don't want to use it this early since it inhibits optimizations. This should probably be merged to the release branch. llvm-svn: 276438
2016-07-23 01:01:33 +08:00
@large = addrspace(3) global [4096 x i32] undef, align 4
AMDGPU: Fix test name and broken CHECK-LABEL llvm-svn: 275928
2016-07-19 07:09:51 +08:00
; CHECK-LABEL: {{^}}groupstaticsize_test0:
AMDGPU: Write LDS objects out as global symbols in code generation Summary: The symbols use the processor-specific SHN_AMDGPU_LDS section index introduced with a previous change. The linker is then expected to resolve relocations, which are also emitted. Initially disabled for HSA and PAL environments until they have caught up in terms of linker and runtime loader. Some notes: - The llvm.amdgcn.groupstaticsize intrinsics can no longer be lowered to a constant at compile times, which means some tests can no longer be applied. The current "solution" is a terrible hack, but the intrinsic isn't used by Mesa, so we can keep it for now. - We no longer know the full LDS size per kernel at compile time, which means that we can no longer generate a relevant error message at compile time. It would be possible to add a check for the size of individual variables, but ultimately the linker will have to perform the final check. Change-Id: If66dbf33fccfbf3609aefefa2558ac0850d42275 Reviewers: arsenm, rampitec, t-tye, b-sumner, jsjodin Subscribers: qcolombet, kzhuravl, jvesely, wdng, yaxunl, dstuttard, tpr, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D61494 llvm-svn: 364297
2019-06-25 19:52:30 +08:00
; NOHSA: v_mov_b32_e32 v{{[0-9]+}}, llvm.amdgcn.groupstaticsize@abs32@lo
; HSA: v_mov_b32_e32 v{{[0-9]+}}, 0x800{{$}}
AMDGPU: Mark all unspecified CC functions in tests as amdgpu_kernel Currently the default C calling convention functions are treated the same as compute kernels. Make this explicit so the default calling convention can be changed to a non-kernel. Converted with perl -pi -e 's/define void/define amdgpu_kernel void/' on the relevant test directories (and undoing in one place that actually wanted a non-kernel). llvm-svn: 298444
2017-03-22 05:39:51 +08:00
define amdgpu_kernel void @groupstaticsize_test0(float addrspace(1)* %out, i32 addrspace(1)* %lds_size) #0 {
AMDGPU/SI: Implement GroupStaticSize Intrinsic for Dynamic LDS Summary: Static LDS size is saved in MachineFunctionInfo::LDSSize, We define a pseudo instruction with usesCustomInserter bit set. Then, in EmitInstrWithCustomInserter, we replace this pseudo instruction with a mov of MachineFunctionInfo::LDSSize. Reviewers: arsenm tstellarAMD Subscribers llvm-commits, arsenm Differential Revision: http://reviews.llvm.org/D18064 llvm-svn: 263563
2016-03-16 01:28:44 +08:00
%tid.x = tail call i32 @llvm.amdgcn.workitem.id.x() #1
%idx.0 = add nsw i32 %tid.x, 64
%static_lds_size = call i32 @llvm.amdgcn.groupstaticsize() #1
store i32 %static_lds_size, i32 addrspace(1)* %lds_size, align 4
%arrayidx0 = getelementptr inbounds [512 x float], [512 x float] addrspace(3)* @lds0, i32 0, i32 %idx.0
%val0 = load float, float addrspace(3)* %arrayidx0, align 4
store float %val0, float addrspace(1)* %out, align 4
ret void
}
AMDGPU: Fix test name and broken CHECK-LABEL llvm-svn: 275928
2016-07-19 07:09:51 +08:00
; CHECK-LABEL: {{^}}groupstaticsize_test1:
AMDGPU: Write LDS objects out as global symbols in code generation Summary: The symbols use the processor-specific SHN_AMDGPU_LDS section index introduced with a previous change. The linker is then expected to resolve relocations, which are also emitted. Initially disabled for HSA and PAL environments until they have caught up in terms of linker and runtime loader. Some notes: - The llvm.amdgcn.groupstaticsize intrinsics can no longer be lowered to a constant at compile times, which means some tests can no longer be applied. The current "solution" is a terrible hack, but the intrinsic isn't used by Mesa, so we can keep it for now. - We no longer know the full LDS size per kernel at compile time, which means that we can no longer generate a relevant error message at compile time. It would be possible to add a check for the size of individual variables, but ultimately the linker will have to perform the final check. Change-Id: If66dbf33fccfbf3609aefefa2558ac0850d42275 Reviewers: arsenm, rampitec, t-tye, b-sumner, jsjodin Subscribers: qcolombet, kzhuravl, jvesely, wdng, yaxunl, dstuttard, tpr, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D61494 llvm-svn: 364297
2019-06-25 19:52:30 +08:00
; NOHSA: v_mov_b32_e32 v{{[0-9]+}}, llvm.amdgcn.groupstaticsize@abs32@lo
; HSA: v_mov_b32_e32 v{{[0-9]+}}, 0xc00{{$}}
AMDGPU: Mark all unspecified CC functions in tests as amdgpu_kernel Currently the default C calling convention functions are treated the same as compute kernels. Make this explicit so the default calling convention can be changed to a non-kernel. Converted with perl -pi -e 's/define void/define amdgpu_kernel void/' on the relevant test directories (and undoing in one place that actually wanted a non-kernel). llvm-svn: 298444
2017-03-22 05:39:51 +08:00
define amdgpu_kernel void @groupstaticsize_test1(float addrspace(1)* %out, i32 %cond, i32 addrspace(1)* %lds_size) {
AMDGPU/SI: Implement GroupStaticSize Intrinsic for Dynamic LDS Summary: Static LDS size is saved in MachineFunctionInfo::LDSSize, We define a pseudo instruction with usesCustomInserter bit set. Then, in EmitInstrWithCustomInserter, we replace this pseudo instruction with a mov of MachineFunctionInfo::LDSSize. Reviewers: arsenm tstellarAMD Subscribers llvm-commits, arsenm Differential Revision: http://reviews.llvm.org/D18064 llvm-svn: 263563
2016-03-16 01:28:44 +08:00
entry:
%static_lds_size = call i32 @llvm.amdgcn.groupstaticsize() #1
store i32 %static_lds_size, i32 addrspace(1)* %lds_size, align 4
%tid.x = tail call i32 @llvm.amdgcn.workitem.id.x() #1
%idx.0 = add nsw i32 %tid.x, 64
%tmp = icmp eq i32 %cond, 0
br i1 %tmp, label %if, label %else
if: ; preds = %entry
%arrayidx0 = getelementptr inbounds [512 x float], [512 x float] addrspace(3)* @lds0, i32 0, i32 %idx.0
%val0 = load float, float addrspace(3)* %arrayidx0, align 4
store float %val0, float addrspace(1)* %out, align 4
br label %endif
else: ; preds = %entry
%arrayidx1 = getelementptr inbounds [256 x float], [256 x float] addrspace(3)* @lds1, i32 0, i32 %idx.0
%val1 = load float, float addrspace(3)* %arrayidx1, align 4
store float %val1, float addrspace(1)* %out, align 4
br label %endif
endif: ; preds = %else, %if
ret void
}
AMDGPU: Fix groupstaticsize for large LDS The size can exceed s_movk_i32's limit, and we don't want to use it this early since it inhibits optimizations. This should probably be merged to the release branch. llvm-svn: 276438
2016-07-23 01:01:33 +08:00
; Exceeds 16-bit simm limit of s_movk_i32
; CHECK-LABEL: {{^}}large_groupstaticsize:
AMDGPU: Write LDS objects out as global symbols in code generation Summary: The symbols use the processor-specific SHN_AMDGPU_LDS section index introduced with a previous change. The linker is then expected to resolve relocations, which are also emitted. Initially disabled for HSA and PAL environments until they have caught up in terms of linker and runtime loader. Some notes: - The llvm.amdgcn.groupstaticsize intrinsics can no longer be lowered to a constant at compile times, which means some tests can no longer be applied. The current "solution" is a terrible hack, but the intrinsic isn't used by Mesa, so we can keep it for now. - We no longer know the full LDS size per kernel at compile time, which means that we can no longer generate a relevant error message at compile time. It would be possible to add a check for the size of individual variables, but ultimately the linker will have to perform the final check. Change-Id: If66dbf33fccfbf3609aefefa2558ac0850d42275 Reviewers: arsenm, rampitec, t-tye, b-sumner, jsjodin Subscribers: qcolombet, kzhuravl, jvesely, wdng, yaxunl, dstuttard, tpr, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D61494 llvm-svn: 364297
2019-06-25 19:52:30 +08:00
; NOHSA: v_mov_b32_e32 v{{[0-9]+}}, llvm.amdgcn.groupstaticsize@abs32@lo
; HSA: v_mov_b32_e32 [[REG:v[0-9]+]], 0x4000{{$}}
AMDGPU: Mark all unspecified CC functions in tests as amdgpu_kernel Currently the default C calling convention functions are treated the same as compute kernels. Make this explicit so the default calling convention can be changed to a non-kernel. Converted with perl -pi -e 's/define void/define amdgpu_kernel void/' on the relevant test directories (and undoing in one place that actually wanted a non-kernel). llvm-svn: 298444
2017-03-22 05:39:51 +08:00
define amdgpu_kernel void @large_groupstaticsize(i32 addrspace(1)* %size, i32 %idx) #0 {
AMDGPU: Fix groupstaticsize for large LDS The size can exceed s_movk_i32's limit, and we don't want to use it this early since it inhibits optimizations. This should probably be merged to the release branch. llvm-svn: 276438
2016-07-23 01:01:33 +08:00
%gep = getelementptr inbounds [4096 x i32], [4096 x i32] addrspace(3)* @large, i32 0, i32 %idx
store volatile i32 0, i32 addrspace(3)* %gep
%static_lds_size = call i32 @llvm.amdgcn.groupstaticsize()
store i32 %static_lds_size, i32 addrspace(1)* %size
ret void
}
AMDGPU/SI: Implement GroupStaticSize Intrinsic for Dynamic LDS Summary: Static LDS size is saved in MachineFunctionInfo::LDSSize, We define a pseudo instruction with usesCustomInserter bit set. Then, in EmitInstrWithCustomInserter, we replace this pseudo instruction with a mov of MachineFunctionInfo::LDSSize. Reviewers: arsenm tstellarAMD Subscribers llvm-commits, arsenm Differential Revision: http://reviews.llvm.org/D18064 llvm-svn: 263563
2016-03-16 01:28:44 +08:00
declare i32 @llvm.amdgcn.groupstaticsize() #1
declare i32 @llvm.amdgcn.workitem.id.x() #1
attributes #0 = { nounwind }
attributes #1 = { nounwind readnone }