ad55ee5869
The structured CFG is just an aid to inserting exec mask modification instructions, once that is done we don't really need it anymore. We also do not analyze blocks with terminators that modify exec, so this should only be impacting true branches. llvm-svn: 288744
58 lines
1.6 KiB
LLVM
58 lines
1.6 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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; GCNOPT-NEXT: s_waitcnt vmcnt(0) expcnt(0)
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; TODO: This waitcnt can be eliminated
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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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; GCNOPT-NEXT: s_waitcnt vmcnt(0) expcnt(0)
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; TODO: This waitcnt can be eliminated
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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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