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988dd980cf
If the read2 produced was supposed to be writing into a super register, it would use the wrong subregister indices. Fix this by inserting copies, so we only ever write to a vreg_64. Run the register coalescer again to clean this up, although this isn't ideal and often does result in an extra move. Also remove the assert that offset1 > offset0. There isn't a real reason to not allow this other than a minor convenience in the compiler, and it doesn't seem worth the effort of avoiding it. llvm-svn: 242174
47 lines
2.0 KiB
LLVM
47 lines
2.0 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=bonaire -verify-machineinstrs -mattr=+load-store-opt < %s | FileCheck -strict-whitespace -check-prefix=SI %s
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; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs -mattr=+load-store-opt < %s | FileCheck -strict-whitespace -check-prefix=SI %s
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@lds = addrspace(3) global [512 x float] undef, align 4
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; offset0 is larger than offset1
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; SI-LABEL: {{^}}offset_order:
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; SI: ds_read2st64_b32 v[{{[0-9]+}}:{{[0-9]+}}], v{{[0-9]+}} offset1:4{{$}}
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; SI: ds_read2_b32 v[{{[0-9]+}}:{{[0-9]+}}], v{{[0-9]+}} offset0:3 offset1:2
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; SI: ds_read2_b32 v[{{[0-9]+}}:{{[0-9]+}}], v{{[0-9]+}} offset0:12 offset1:14
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; SI: ds_read_b32 v{{[0-9]+}}, v{{[0-9]+}} offset:44
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define void @offset_order(float addrspace(1)* %out) {
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entry:
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%ptr0 = getelementptr inbounds [512 x float], [512 x float] addrspace(3)* @lds, i32 0, i32 0
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%val0 = load float, float addrspace(3)* %ptr0
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%ptr1 = getelementptr inbounds [512 x float], [512 x float] addrspace(3)* @lds, i32 0, i32 256
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%val1 = load float, float addrspace(3)* %ptr1
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%add1 = fadd float %val0, %val1
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%ptr2 = getelementptr inbounds [512 x float], [512 x float] addrspace(3)* @lds, i32 0, i32 3
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%val2 = load float, float addrspace(3)* %ptr2
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%add2 = fadd float %add1, %val2
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%ptr3 = getelementptr inbounds [512 x float], [512 x float] addrspace(3)* @lds, i32 0, i32 2
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%val3 = load float, float addrspace(3)* %ptr3
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%add3 = fadd float %add2, %val3
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%ptr4 = getelementptr inbounds [512 x float], [512 x float] addrspace(3)* @lds, i32 0, i32 12
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%val4 = load float, float addrspace(3)* %ptr4
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%add4 = fadd float %add3, %val4
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%ptr5 = getelementptr inbounds [512 x float], [512 x float] addrspace(3)* @lds, i32 0, i32 14
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%val5 = load float, float addrspace(3)* %ptr5
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%add5 = fadd float %add4, %val5
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%ptr6 = getelementptr inbounds [512 x float], [512 x float] addrspace(3)* @lds, i32 0, i32 11
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%val6 = load float, float addrspace(3)* %ptr6
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%add6 = fadd float %add5, %val6
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store float %add6, float addrspace(1)* %out
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ret void
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}
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