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216a9fc9a1
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
45 lines
1.8 KiB
LLVM
45 lines
1.8 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=verde -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=FUNC %s
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; RUN: llc -march=amdgcn -mcpu=bonaire -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=FUNC %s
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; RUN: llc -march=r600 -mcpu=redwood < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s
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@local_memory.local_mem = internal unnamed_addr addrspace(3) global [128 x i32] undef, align 4
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@lds = addrspace(3) global [512 x i32] undef, align 4
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; On SI we need to make sure that the base offset is a register and
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; not an immediate.
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; FUNC-LABEL: {{^}}load_i32_local_const_ptr:
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; GCN: v_mov_b32_e32 v[[PTR:[0-9]+]], lds@abs32@lo
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; GCN: ds_read_b32 v{{[0-9]+}}, v[[PTR]] offset:4
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; R600: LDS_READ_RET
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define amdgpu_kernel void @load_i32_local_const_ptr(i32 addrspace(1)* %out, i32 addrspace(3)* %in) #0 {
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entry:
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%tmp0 = getelementptr [512 x i32], [512 x i32] addrspace(3)* @lds, i32 0, i32 1
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%tmp1 = load i32, i32 addrspace(3)* %tmp0
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%tmp2 = getelementptr i32, i32 addrspace(1)* %out, i32 1
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store i32 %tmp1, i32 addrspace(1)* %tmp2
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ret void
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}
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; Test loading a i32 and v2i32 value from the same base pointer.
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; FUNC-LABEL: {{^}}load_i32_v2i32_local:
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; R600: LDS_READ_RET
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; R600: LDS_READ_RET
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; R600: LDS_READ_RET
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; GCN-DAG: ds_read_b32
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; GCN-DAG: ds_read2_b32
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define amdgpu_kernel void @load_i32_v2i32_local(<2 x i32> addrspace(1)* %out, i32 addrspace(3)* %in) #0 {
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%scalar = load i32, i32 addrspace(3)* %in
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%tmp0 = bitcast i32 addrspace(3)* %in to <2 x i32> addrspace(3)*
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%vec_ptr = getelementptr <2 x i32>, <2 x i32> addrspace(3)* %tmp0, i32 2
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%vec0 = load <2 x i32>, <2 x i32> addrspace(3)* %vec_ptr, align 4
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%vec1 = insertelement <2 x i32> <i32 0, i32 0>, i32 %scalar, i32 0
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%vec = add <2 x i32> %vec0, %vec1
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store <2 x i32> %vec, <2 x i32> addrspace(1)* %out
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ret void
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}
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attributes #0 = { nounwind }
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