derek.holloway
7502bf64a4
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30 lines
1.0 KiB
LLVM
30 lines
1.0 KiB
LLVM
; RUN: llc -mtriple=amdgcn -mcpu=tahiti < %s | FileCheck -check-prefix=FUNC -check-prefix=SI %s
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@ptr_load = addrspace(3) global ptr addrspace(4) poison, align 8
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; Make sure when the load from %ptr2 is folded the chain isn't lost,
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; resulting in losing the store to gptr
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; FUNC-LABEL: {{^}}missing_store_reduced:
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; SI: s_load_dwordx4
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; SI-DAG: ds_read_b64
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; SI-DAG: v_readfirstlane_b32 s[[PTR_LO:[0-9]+]], v{{[0-9]+}}
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; SI-DAG: v_readfirstlane_b32 s[[PTR_HI:[0-9]+]], v{{[0-9]+}}
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; SI-DAG: s_load_dword s{{[0-9]+}}, s[[[PTR_LO]]:[[PTR_HI]]]
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; SI-DAG: buffer_store_dword
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; SI-DAG: buffer_store_dword
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; SI: s_endpgm
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define amdgpu_kernel void @missing_store_reduced(ptr addrspace(1) %out, ptr addrspace(1) %gptr) #0 {
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%ptr0 = load ptr addrspace(4), ptr addrspace(3) @ptr_load, align 8
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%ptr2 = getelementptr inbounds i32, ptr addrspace(4) %ptr0, i64 2
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store i32 99, ptr addrspace(1) %gptr, align 4
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%tmp2 = load i32, ptr addrspace(4) %ptr2, align 4
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store i32 %tmp2, ptr addrspace(1) %out, align 4
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ret void
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}
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attributes #0 = { nounwind }
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