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llvm-mirror/test/CodeGen/R600/missing-store.ll
Tom Stellard 342e72a308 R600/SI: Add a stub GCNTargetMachine
This is equivalent to the AMDGPUTargetMachine now, but it is the
starting point for separating R600 and GCN functionality into separate
targets.

It is recommened that users start using the gcn triple for GCN-based
GPUs, because using the r600 triple for these GPUs will be deprecated in
the future.

llvm-svn: 225277
2015-01-06 18:00:21 +00:00

27 lines
851 B
LLVM

; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=FUNC -check-prefix=SI %s
@ptr_load = addrspace(3) global i32 addrspace(2)* undef, align 8
; Make sure when the load from %ptr2 is folded the chain isn't lost,
; resulting in losing the store to gptr
; FUNC-LABEL: {{^}}missing_store_reduced:
; SI: ds_read_b64
; SI: buffer_store_dword
; SI: buffer_load_dword
; SI: buffer_store_dword
; SI: s_endpgm
define void @missing_store_reduced(i32 addrspace(1)* %out, i32 addrspace(1)* %gptr) #0 {
%ptr0 = load i32 addrspace(2)* addrspace(3)* @ptr_load, align 8
%ptr2 = getelementptr inbounds i32 addrspace(2)* %ptr0, i64 2
store i32 99, i32 addrspace(1)* %gptr, align 4
%tmp2 = load i32 addrspace(2)* %ptr2, align 4
store i32 %tmp2, i32 addrspace(1)* %out, align 4
ret void
}
attributes #0 = { nounwind }