d3dda422bf
Post ISel, LDS variables are absolute values. Representing them as such is simpler than the frame recalculation currently used to build assembler tables from their addresses. This is a precursor to lowering dynamic/external LDS accesses from non-kernel functions. Reviewed By: arsenm Differential Revision: https://reviews.llvm.org/D144221
88 lines
4.3 KiB
LLVM
88 lines
4.3 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=gfx900 -O3 < %s | FileCheck -check-prefix=GCN %s
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; RUN: opt -S -mtriple=amdgcn-- -amdgpu-lower-module-lds < %s | FileCheck %s
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; RUN: opt -S -mtriple=amdgcn-- -passes=amdgpu-lower-module-lds < %s | FileCheck %s
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@a = internal unnamed_addr addrspace(3) global [64 x i32] undef, align 4
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@b = internal unnamed_addr addrspace(3) global [64 x i32] undef, align 4
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@c = internal unnamed_addr addrspace(3) global [64 x i32] undef, align 4
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; FIXME: Should combine the DS instructions into ds_write2 and ds_read2. This
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; does not happen because when SILoadStoreOptimizer is run, the reads and writes
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; are not adjacent. They are only moved later by MachineScheduler.
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; GCN-LABEL: {{^}}no_clobber_ds_load_stores_x2:
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; GCN: ds_write_b32
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; GCN: ds_write_b32
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; GCN: ds_read_b32
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; GCN: ds_read_b32
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; CHECK-LABEL: @no_clobber_ds_load_stores_x2
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; CHECK: store i32 1, ptr addrspace(3) @llvm.amdgcn.kernel.no_clobber_ds_load_stores_x2.lds, align 16, !alias.scope !1, !noalias !4
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; CHECK: %val.a = load i32, ptr addrspace(3) %gep.a, align 4, !alias.scope !1, !noalias !4
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; CHECK: store i32 2, ptr addrspace(3) getelementptr inbounds (%llvm.amdgcn.kernel.no_clobber_ds_load_stores_x2.lds.t, ptr addrspace(3) @llvm.amdgcn.kernel.no_clobber_ds_load_stores_x2.lds, i32 0, i32 1), align 16, !alias.scope !4, !noalias !1
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; CHECK: %val.b = load i32, ptr addrspace(3) %gep.b, align 4, !alias.scope !4, !noalias !1
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define amdgpu_kernel void @no_clobber_ds_load_stores_x2(ptr addrspace(1) %arg, i32 %i) {
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bb:
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store i32 1, ptr addrspace(3) @a, align 4
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%gep.a = getelementptr inbounds [64 x i32], ptr addrspace(3) @a, i32 0, i32 %i
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%val.a = load i32, ptr addrspace(3) %gep.a, align 4
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store i32 2, ptr addrspace(3) @b, align 4
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%gep.b = getelementptr inbounds [64 x i32], ptr addrspace(3) @b, i32 0, i32 %i
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%val.b = load i32, ptr addrspace(3) %gep.b, align 4
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%val = add i32 %val.a, %val.b
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store i32 %val, ptr addrspace(1) %arg, align 4
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ret void
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}
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; GCN-LABEL: {{^}}no_clobber_ds_load_stores_x3:
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; GCN-DAG: ds_write_b32
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; GCN-DAG: ds_write_b32
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; GCN-DAG: ds_write_b32
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; GCN-DAG: ds_read_b32
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; GCN-DAG: ds_read_b32
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; GCN-DAG: ds_read_b32
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; CHECK-LABEL: @no_clobber_ds_load_stores_x3
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; CHECK: store i32 1, ptr addrspace(3) @llvm.amdgcn.kernel.no_clobber_ds_load_stores_x3.lds, align 16, !alias.scope !6, !noalias !9
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; CHECK: %gep.a = getelementptr inbounds [64 x i32], ptr addrspace(3) @llvm.amdgcn.kernel.no_clobber_ds_load_stores_x3.lds, i32 0, i32 %i
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; CHECK: %val.a = load i32, ptr addrspace(3) %gep.a, align 4, !alias.scope !6, !noalias !9
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; CHECK: store i32 2, ptr addrspace(3) getelementptr inbounds (%llvm.amdgcn.kernel.no_clobber_ds_load_stores_x3.lds.t, ptr addrspace(3) @llvm.amdgcn.kernel.no_clobber_ds_load_stores_x3.lds, i32 0, i32 1), align 16, !alias.scope !12, !noalias !13
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; CHECK: %val.b = load i32, ptr addrspace(3) %gep.b, align 4, !alias.scope !12, !noalias !13
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; CHECK: store i32 3, ptr addrspace(3) getelementptr inbounds (%llvm.amdgcn.kernel.no_clobber_ds_load_stores_x3.lds.t, ptr addrspace(3) @llvm.amdgcn.kernel.no_clobber_ds_load_stores_x3.lds, i32 0, i32 2), align 16, !alias.scope !14, !noalias !15
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; CHECK: %val.c = load i32, ptr addrspace(3) %gep.c, align 4, !alias.scope !14, !noalias !15
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define amdgpu_kernel void @no_clobber_ds_load_stores_x3(ptr addrspace(1) %arg, i32 %i) {
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bb:
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store i32 1, ptr addrspace(3) @a, align 4
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%gep.a = getelementptr inbounds [64 x i32], ptr addrspace(3) @a, i32 0, i32 %i
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%val.a = load i32, ptr addrspace(3) %gep.a, align 4
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store i32 2, ptr addrspace(3) @b, align 4
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%gep.b = getelementptr inbounds [64 x i32], ptr addrspace(3) @b, i32 0, i32 %i
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%val.b = load i32, ptr addrspace(3) %gep.b, align 4
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store i32 3, ptr addrspace(3) @c, align 4
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%gep.c = getelementptr inbounds [64 x i32], ptr addrspace(3) @c, i32 0, i32 %i
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%val.c = load i32, ptr addrspace(3) %gep.c, align 4
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%val.1 = add i32 %val.a, %val.b
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%val = add i32 %val.1, %val.c
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store i32 %val, ptr addrspace(1) %arg, align 4
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ret void
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}
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; CHECK: !0 = !{i64 0, i64 1}
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; CHECK: !1 = !{!2}
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; CHECK: !2 = distinct !{!2, !3}
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; CHECK: !3 = distinct !{!3}
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; CHECK: !4 = !{!5}
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; CHECK: !5 = distinct !{!5, !3}
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; CHECK: !6 = !{!7}
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; CHECK: !7 = distinct !{!7, !8}
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; CHECK: !8 = distinct !{!8}
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; CHECK: !9 = !{!10, !11}
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; CHECK: !10 = distinct !{!10, !8}
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; CHECK: !11 = distinct !{!11, !8}
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; CHECK: !12 = !{!10}
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; CHECK: !13 = !{!7, !11}
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; CHECK: !14 = !{!11}
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; CHECK: !15 = !{!7, !10}
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