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7aed0ccd46
noduplicate prevents unrolling of small loops that happen to have barriers in them. If a loop has a barrier in it, it is OK to duplicate it for the unroll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256075 91177308-0d34-0410-b5e6-96231b3b80d8
43 lines
2.2 KiB
LLVM
43 lines
2.2 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs -mattr=+load-store-opt -enable-misched < %s | FileCheck --check-prefix=CHECK %s
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; RUN: llc -march=amdgcn -mcpu=bonaire -verify-machineinstrs -mattr=+load-store-opt -enable-misched < %s | FileCheck --check-prefix=CHECK %s
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; This test is for a bug in the machine scheduler where stores without
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; an underlying object would be moved across the barrier. In this
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; test, the <2 x i8> store will be split into two i8 stores, so they
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; won't have an underlying object.
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; CHECK-LABEL: {{^}}test:
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; CHECK: ds_write_b8
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; CHECK: ds_write_b8
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; CHECK: s_barrier
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; CHECK: s_endpgm
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; Function Attrs: nounwind
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define void @test(<2 x i8> addrspace(3)* nocapture %arg, <2 x i8> addrspace(1)* nocapture readonly %arg1, i32 addrspace(1)* nocapture readonly %arg2, <2 x i8> addrspace(1)* nocapture %arg3, i32 %arg4, i64 %tmp9) {
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bb:
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%tmp10 = getelementptr inbounds i32, i32 addrspace(1)* %arg2, i64 %tmp9
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%tmp13 = load i32, i32 addrspace(1)* %tmp10, align 2
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%tmp14 = getelementptr inbounds <2 x i8>, <2 x i8> addrspace(3)* %arg, i32 %tmp13
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%tmp15 = load <2 x i8>, <2 x i8> addrspace(3)* %tmp14, align 2
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%tmp16 = add i32 %tmp13, 1
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%tmp17 = getelementptr inbounds <2 x i8>, <2 x i8> addrspace(3)* %arg, i32 %tmp16
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store <2 x i8> %tmp15, <2 x i8> addrspace(3)* %tmp17, align 2
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tail call void @llvm.AMDGPU.barrier.local() #2
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%tmp25 = load i32, i32 addrspace(1)* %tmp10, align 4
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%tmp26 = sext i32 %tmp25 to i64
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%tmp27 = sext i32 %arg4 to i64
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%tmp28 = getelementptr inbounds <2 x i8>, <2 x i8> addrspace(3)* %arg, i32 %tmp25, i32 %arg4
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%tmp29 = load i8, i8 addrspace(3)* %tmp28, align 1
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%tmp30 = getelementptr inbounds <2 x i8>, <2 x i8> addrspace(1)* %arg3, i64 %tmp26, i64 %tmp27
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store i8 %tmp29, i8 addrspace(1)* %tmp30, align 1
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%tmp32 = getelementptr inbounds <2 x i8>, <2 x i8> addrspace(3)* %arg, i32 %tmp25, i32 0
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%tmp33 = load i8, i8 addrspace(3)* %tmp32, align 1
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%tmp35 = getelementptr inbounds <2 x i8>, <2 x i8> addrspace(1)* %arg3, i64 %tmp26, i64 0
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store i8 %tmp33, i8 addrspace(1)* %tmp35, align 1
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ret void
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}
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; Function Attrs: convergent nounwind
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declare void @llvm.AMDGPU.barrier.local() #2
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attributes #2 = { convergent nounwind }
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