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buffer-schedule.ll
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buffer-schedule.ll
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; RUN: llc -mtriple=amdgcn--amdpal -mcpu=gfx803 -verify-machineinstrs < %s | FileCheck -check-prefixes=GCN %s
; RUN: llc -mtriple=amdgcn--amdpal -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -check-prefixes=GCN %s
; The buffer_loads and buffer_stores all access the same location. Check they do
; not get reordered by the scheduler.
; GCN-LABEL: {{^}}_amdgpu_cs_main:
; GCN: buffer_load_dword
; GCN: buffer_store_dword
; GCN: buffer_load_dword
; GCN: buffer_store_dword
; GCN: buffer_load_dword
; GCN: buffer_store_dword
; GCN: buffer_load_dword
; GCN: buffer_store_dword
; Function Attrs: nounwind
define amdgpu_cs void @_amdgpu_cs_main(<3 x i32> inreg %arg3, <3 x i32> %arg5) {
.entry:
%tmp9 = add <3 x i32> %arg3, %arg5
%tmp10 = extractelement <3 x i32> %tmp9, i32 0
%tmp11 = shl i32 %tmp10, 2
%tmp12 = inttoptr i64 undef to <4 x i32> addrspace(4)*
%tmp13 = load <4 x i32>, <4 x i32> addrspace(4)* %tmp12, align 16
%tmp14 = call float @llvm.amdgcn.buffer.load.f32(<4 x i32> %tmp13, i32 0, i32 %tmp11, i1 false, i1 false) #0
%tmp17 = load <4 x i32>, <4 x i32> addrspace(4)* %tmp12, align 16
call void @llvm.amdgcn.buffer.store.f32(float %tmp14, <4 x i32> %tmp17, i32 0, i32 %tmp11, i1 false, i1 false) #0
%tmp20 = load <4 x i32>, <4 x i32> addrspace(4)* %tmp12, align 16
%tmp21 = call float @llvm.amdgcn.buffer.load.f32(<4 x i32> %tmp20, i32 0, i32 %tmp11, i1 false, i1 false) #0
%tmp22 = fadd reassoc nnan arcp contract float %tmp21, 1.000000e+00
call void @llvm.amdgcn.buffer.store.f32(float %tmp22, <4 x i32> %tmp20, i32 0, i32 %tmp11, i1 false, i1 false) #0
%tmp25 = load <4 x i32>, <4 x i32> addrspace(4)* %tmp12, align 16
%tmp26 = call float @llvm.amdgcn.buffer.load.f32(<4 x i32> %tmp25, i32 0, i32 %tmp11, i1 false, i1 false) #0
%tmp27 = fadd reassoc nnan arcp contract float %tmp26, 1.000000e+00
call void @llvm.amdgcn.buffer.store.f32(float %tmp27, <4 x i32> %tmp25, i32 0, i32 %tmp11, i1 false, i1 false) #0
%tmp30 = load <4 x i32>, <4 x i32> addrspace(4)* %tmp12, align 16
%tmp31 = call float @llvm.amdgcn.buffer.load.f32(<4 x i32> %tmp30, i32 0, i32 %tmp11, i1 false, i1 false) #0
%tmp32 = fadd reassoc nnan arcp contract float %tmp31, 1.000000e+00
call void @llvm.amdgcn.buffer.store.f32(float %tmp32, <4 x i32> %tmp30, i32 0, i32 %tmp11, i1 false, i1 false) #0
%tmp35 = load <4 x i32>, <4 x i32> addrspace(4)* %tmp12, align 16
%tmp36 = call float @llvm.amdgcn.buffer.load.f32(<4 x i32> %tmp35, i32 0, i32 %tmp11, i1 false, i1 false) #0
%tmp37 = fadd reassoc nnan arcp contract float %tmp36, 1.000000e+00
call void @llvm.amdgcn.buffer.store.f32(float %tmp37, <4 x i32> %tmp35, i32 0, i32 %tmp11, i1 false, i1 false) #0
ret void
}
declare float @llvm.amdgcn.buffer.load.f32(<4 x i32>, i32, i32, i1, i1) #2
declare void @llvm.amdgcn.buffer.store.f32(float, <4 x i32>, i32, i32, i1, i1) #3
attributes #2 = { nounwind readonly }
attributes #3 = { nounwind writeonly }