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39 lines
1.7 KiB
LLVM
39 lines
1.7 KiB
LLVM
; RUN: llc -amdgpu-scalarize-global-loads=false -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=FUNC -check-prefix=SI %s
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; FIXME: This currently doesn't do a great job of clustering the
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; loads, which end up with extra moves between them. Right now, it
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; seems the only things areLoadsFromSameBasePtr is accomplishing is
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; ordering the loads so that the lower address loads come first.
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; FUNC-LABEL: {{^}}cluster_global_arg_loads:
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; SI-DAG: buffer_load_dword [[REG0:v[0-9]+]], off, s{{\[[0-9]+:[0-9]+\]}}, 0{{$}}
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; SI-DAG: buffer_load_dword [[REG1:v[0-9]+]], off, s{{\[[0-9]+:[0-9]+\]}}, 0 offset:8
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; SI: buffer_store_dword [[REG0]]
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; SI: buffer_store_dword [[REG1]]
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define amdgpu_kernel void @cluster_global_arg_loads(i32 addrspace(1)* %out0, i32 addrspace(1)* %out1, i32 addrspace(1)* %ptr) #0 {
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%load0 = load i32, i32 addrspace(1)* %ptr, align 4
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%gep = getelementptr i32, i32 addrspace(1)* %ptr, i32 2
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%load1 = load i32, i32 addrspace(1)* %gep, align 4
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store i32 %load0, i32 addrspace(1)* %out0, align 4
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store i32 %load1, i32 addrspace(1)* %out1, align 4
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ret void
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}
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; Test for a crach in SIInstrInfo::areLoadsFromSameBasePtr() when checking
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; an MUBUF load which does not have a vaddr operand.
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; FUNC-LABEL: {{^}}same_base_ptr_crash:
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; SI: buffer_load_dword
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; SI: buffer_load_dword
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define amdgpu_kernel void @same_base_ptr_crash(i32 addrspace(1)* %out, i32 addrspace(1)* %in, i32 %offset) {
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entry:
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%out1 = getelementptr i32, i32 addrspace(1)* %out, i32 %offset
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%tmp0 = load i32, i32 addrspace(1)* %out
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%tmp1 = load i32, i32 addrspace(1)* %out1
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%tmp2 = add i32 %tmp0, %tmp1
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store i32 %tmp2, 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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attributes #1 = { nounwind readnone }
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