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4404d0d6e3
nThis avoids the nasty problems caused by using memory instructions that read the exec mask while spilling / restoring registers used for control flow masking, but only for VI when these were added. This always uses the scalar stores when enabled currently, but it may be better to still try to spill to a VGPR and use this on the fallback memory path. The cache also needs to be flushed before wave termination if a scalar store is used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286766 91177308-0d34-0410-b5e6-96231b3b80d8
55 lines
1.5 KiB
LLVM
55 lines
1.5 KiB
LLVM
; RUN: llc -O0 -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCNNOOPT -check-prefix=GCN %s
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; RUN: llc -O0 -march=amdgcn -mcpu=tonga -amdgpu-spill-sgpr-to-smem=0 -verify-machineinstrs < %s | FileCheck -check-prefix=GCNNOOPT -check-prefix=GCN %s
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; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCNOPT -check-prefix=GCN %s
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; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=GCNOPT -check-prefix=GCN %s
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; GCN-LABEL: {{^}}test_branch:
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; GCNNOOPT: v_writelane_b32
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; GCNNOOPT: v_writelane_b32
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; GCN: s_cbranch_scc1 [[END:BB[0-9]+_[0-9]+]]
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; GCN: ; BB#1
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; GCNNOOPT: v_readlane_b32
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; GCNNOOPT: v_readlane_b32
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; GCN: buffer_store_dword
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; GCN: s_endpgm
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; GCN: {{^}}[[END]]
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; GCN: s_endpgm
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define void @test_branch(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %in, i32 %val) #0 {
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%cmp = icmp ne i32 %val, 0
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br i1 %cmp, label %store, label %end
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store:
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store i32 222, i32 addrspace(1)* %out
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ret void
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end:
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ret void
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}
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; GCN-LABEL: {{^}}test_brcc_i1:
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; GCN: buffer_load_ubyte
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; GCN: v_and_b32_e32 v{{[0-9]+}}, 1,
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; GCN: v_cmp_eq_u32_e32 vcc,
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; GCN: s_cbranch_vccnz [[END:BB[0-9]+_[0-9]+]]
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; GCN: buffer_store_dword
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; GCN: s_endpgm
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; GCN: {{^}}[[END]]
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; GCN: s_endpgm
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define void @test_brcc_i1(i32 addrspace(1)* noalias %out, i32 addrspace(1)* noalias %in, i1 %val) #0 {
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%cmp0 = icmp ne i1 %val, 0
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br i1 %cmp0, label %store, label %end
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store:
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store i32 222, i32 addrspace(1)* %out
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ret void
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end:
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ret void
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}
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attributes #0 = { nounwind }
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