forked from OSchip/llvm-project
566 lines
15 KiB
LLVM
566 lines
15 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=verde -amdgpu-early-ifcvt=0 -machine-sink-split-probability-threshold=0 -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=SI %s
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; RUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -amdgpu-early-ifcvt=0 -machine-sink-split-probability-threshold=0 -verify-machineinstrs < %s | FileCheck -check-prefix=GCN -check-prefix=VI %s
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; GCN-LABEL: {{^}}uniform_if_scc:
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; GCN-DAG: s_cmp_eq_u32 s{{[0-9]+}}, 0
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; GCN-DAG: s_mov_b32 [[S_VAL:s[0-9]+]], 0
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; GCN: s_cbranch_scc1 [[IF_LABEL:[0-9_A-Za-z]+]]
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; Fall-through to the else
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; GCN: s_mov_b32 [[S_VAL]], 1
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; GCN: [[IF_LABEL]]:
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; GCN: v_mov_b32_e32 [[V_VAL:v[0-9]+]], [[S_VAL]]
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; GCN: buffer_store_dword [[V_VAL]]
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define amdgpu_kernel void @uniform_if_scc(i32 %cond, i32 addrspace(1)* %out) {
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entry:
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%cmp0 = icmp eq i32 %cond, 0
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br i1 %cmp0, label %if, label %else
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if:
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br label %done
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else:
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br label %done
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done:
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%value = phi i32 [0, %if], [1, %else]
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store i32 %value, i32 addrspace(1)* %out
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ret void
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}
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; GCN-LABEL: {{^}}uniform_if_vcc:
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; GCN-DAG: v_cmp_eq_f32_e64 [[COND:vcc|s\[[0-9]+:[0-9]+\]]], s{{[0-9]+}}, 0{{$}}
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; GCN-DAG: s_mov_b32 [[S_VAL:s[0-9]+]], 0
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; GCN: s_cbranch_vccnz [[IF_LABEL:[0-9_A-Za-z]+]]
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; Fall-through to the else
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; GCN: s_mov_b32 [[S_VAL]], 1
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; GCN: [[IF_LABEL]]:
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; GCN: v_mov_b32_e32 [[V_VAL:v[0-9]+]], [[S_VAL]]
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; GCN: buffer_store_dword [[V_VAL]]
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define amdgpu_kernel void @uniform_if_vcc(float %cond, i32 addrspace(1)* %out) {
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entry:
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%cmp0 = fcmp oeq float %cond, 0.0
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br i1 %cmp0, label %if, label %else
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if:
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br label %done
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else:
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br label %done
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done:
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%value = phi i32 [0, %if], [1, %else]
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store i32 %value, i32 addrspace(1)* %out
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ret void
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}
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; GCN-LABEL: {{^}}uniform_if_swap_br_targets_scc:
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; GCN-DAG: s_cmp_lg_u32 s{{[0-9]+}}, 0
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; GCN-DAG: s_mov_b32 [[S_VAL:s[0-9]+]], 0
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; GCN: s_cbranch_scc1 [[IF_LABEL:[0-9_A-Za-z]+]]
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; Fall-through to the else
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; GCN: s_mov_b32 [[S_VAL]], 1
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; GCN: [[IF_LABEL]]:
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; GCN: v_mov_b32_e32 [[V_VAL:v[0-9]+]], [[S_VAL]]
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; GCN: buffer_store_dword [[V_VAL]]
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define amdgpu_kernel void @uniform_if_swap_br_targets_scc(i32 %cond, i32 addrspace(1)* %out) {
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entry:
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%cmp0 = icmp eq i32 %cond, 0
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br i1 %cmp0, label %else, label %if
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if:
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br label %done
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else:
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br label %done
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done:
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%value = phi i32 [0, %if], [1, %else]
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store i32 %value, i32 addrspace(1)* %out
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ret void
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}
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; GCN-LABEL: {{^}}uniform_if_swap_br_targets_vcc:
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; GCN-DAG: v_cmp_neq_f32_e64 [[COND:vcc|s\[[0-9]+:[0-9]+\]]], s{{[0-9]+}}, 0{{$}}
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; GCN-DAG: s_mov_b32 [[S_VAL:s[0-9]+]], 0
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; GCN: s_cbranch_vccnz [[IF_LABEL:[0-9_A-Za-z]+]]
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; Fall-through to the else
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; GCN: s_mov_b32 [[S_VAL]], 1
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; GCN: [[IF_LABEL]]:
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; GCN: v_mov_b32_e32 [[V_VAL:v[0-9]+]], [[S_VAL]]
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; GCN: buffer_store_dword [[V_VAL]]
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define amdgpu_kernel void @uniform_if_swap_br_targets_vcc(float %cond, i32 addrspace(1)* %out) {
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entry:
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%cmp0 = fcmp oeq float %cond, 0.0
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br i1 %cmp0, label %else, label %if
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if:
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br label %done
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else:
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br label %done
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done:
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%value = phi i32 [0, %if], [1, %else]
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store i32 %value, i32 addrspace(1)* %out
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ret void
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}
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; GCN-LABEL: {{^}}uniform_if_move_valu:
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; GCN: v_add_f32_e32 [[CMP:v[0-9]+]]
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; Using a floating-point value in an integer compare will cause the compare to
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; be selected for the SALU and then later moved to the VALU.
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; GCN: v_cmp_ne_u32_e32 [[COND:vcc|s\[[0-9]+:[0-9]+\]]], 5, [[CMP]]
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; GCN: s_and_b64 vcc, exec, [[COND]]
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; GCN: s_cbranch_vccnz [[ENDIF_LABEL:[0-9_A-Za-z]+]]
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; GCN: buffer_store_dword
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; GCN: [[ENDIF_LABEL]]:
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; GCN: s_endpgm
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define amdgpu_kernel void @uniform_if_move_valu(i32 addrspace(1)* %out, float %a) {
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entry:
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%a.0 = fadd float %a, 10.0
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%cond = bitcast float %a.0 to i32
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%cmp = icmp eq i32 %cond, 5
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br i1 %cmp, label %if, label %endif
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if:
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store i32 0, i32 addrspace(1)* %out
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br label %endif
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endif:
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ret void
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}
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; GCN-LABEL: {{^}}uniform_if_move_valu_commute:
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; GCN: v_add_f32_e32 [[CMP:v[0-9]+]]
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; Using a floating-point value in an integer compare will cause the compare to
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; be selected for the SALU and then later moved to the VALU.
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; GCN: v_cmp_gt_u32_e32 [[COND:vcc|s\[[0-9]+:[0-9]+\]]], 6, [[CMP]]
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; GCN: s_and_b64 vcc, exec, [[COND]]
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; GCN: s_cbranch_vccnz [[ENDIF_LABEL:[0-9_A-Za-z]+]]
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; GCN: buffer_store_dword
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; GCN: [[ENDIF_LABEL]]:
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; GCN: s_endpgm
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define amdgpu_kernel void @uniform_if_move_valu_commute(i32 addrspace(1)* %out, float %a) {
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entry:
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%a.0 = fadd float %a, 10.0
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%cond = bitcast float %a.0 to i32
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%cmp = icmp ugt i32 %cond, 5
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br i1 %cmp, label %if, label %endif
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if:
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store i32 0, i32 addrspace(1)* %out
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br label %endif
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endif:
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ret void
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}
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; GCN-LABEL: {{^}}uniform_if_else_ret:
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; GCN: s_cmp_lg_u32 s{{[0-9]+}}, 0
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; GCN: s_cbranch_scc0 [[IF_LABEL:[0-9_A-Za-z]+]]
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; GCN: v_mov_b32_e32 [[TWO:v[0-9]+]], 2
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; GCN: buffer_store_dword [[TWO]]
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; GCN: s_endpgm
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; GCN: {{^}}[[IF_LABEL]]:
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; GCN: v_mov_b32_e32 [[ONE:v[0-9]+]], 1
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; GCN: buffer_store_dword [[ONE]]
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; GCN: s_endpgm
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define amdgpu_kernel void @uniform_if_else_ret(i32 addrspace(1)* nocapture %out, i32 %a) {
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entry:
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%cmp = icmp eq i32 %a, 0
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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store i32 1, i32 addrspace(1)* %out
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br label %if.end
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if.else: ; preds = %entry
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store i32 2, i32 addrspace(1)* %out
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret void
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}
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; GCN-LABEL: {{^}}uniform_if_else:
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; GCN: s_cmp_lg_u32 s{{[0-9]+}}, 0
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; GCN-NEXT: s_cbranch_scc0 [[IF_LABEL:[0-9_A-Za-z]+]]
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; GCN: v_mov_b32_e32 [[IMM_REG:v[0-9]+]], 2
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; GCN: s_branch [[ENDIF_LABEL:[0-9_A-Za-z]+]]
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; GCN: [[IF_LABEL]]:
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; GCN-NEXT: v_mov_b32_e32 [[IMM_REG]], 1
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; GCN-NEXT: [[ENDIF_LABEL]]:
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; GCN: buffer_store_dword [[IMM_REG]]
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; GCN: v_mov_b32_e32 [[THREE:v[0-9]+]], 3
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; GCN: buffer_store_dword [[THREE]]
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; GCN: s_endpgm
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define amdgpu_kernel void @uniform_if_else(i32 addrspace(1)* nocapture %out0, i32 addrspace(1)* nocapture %out1, i32 %a) {
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entry:
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%cmp = icmp eq i32 %a, 0
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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store i32 1, i32 addrspace(1)* %out0
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br label %if.end
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if.else: ; preds = %entry
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store i32 2, i32 addrspace(1)* %out0
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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store i32 3, i32 addrspace(1)* %out1
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ret void
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}
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; GCN-LABEL: {{^}}icmp_2_users:
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; GCN: s_cmp_lt_i32 s{{[0-9]+}}, 1
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; GCN: s_cbranch_scc1 [[LABEL:[a-zA-Z0-9_]+]]
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; GCN: buffer_store_dword
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; GCN: [[LABEL]]:
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; GCN: s_endpgm
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define amdgpu_kernel void @icmp_2_users(i32 addrspace(1)* %out, i32 %cond) {
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main_body:
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%0 = icmp sgt i32 %cond, 0
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%1 = sext i1 %0 to i32
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br i1 %0, label %IF, label %ENDIF
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IF:
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store i32 %1, i32 addrspace(1)* %out
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br label %ENDIF
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ENDIF: ; preds = %IF, %main_body
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ret void
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}
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; GCN-LABEL: {{^}}icmp_users_different_blocks:
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; GCN: s_load_dword [[COND:s[0-9]+]]
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; GCN: s_cmp_lt_i32 [[COND]], 1
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; GCN: s_cbranch_scc1 [[EXIT:[A-Za-z0-9_]+]]
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; GCN: v_cmp_gt_i32_e64 vcc, [[COND]], 0{{$}}
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; GCN: s_cbranch_vccz [[BODY:[A-Za-z0-9_]+]]
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; GCN: {{^}}[[EXIT]]:
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; GCN: s_endpgm
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; GCN: {{^}}[[BODY]]:
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; GCN: buffer_store
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; GCN: s_endpgm
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define amdgpu_kernel void @icmp_users_different_blocks(i32 %cond0, i32 %cond1, i32 addrspace(1)* %out) {
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bb:
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%tmp = tail call i32 @llvm.amdgcn.workitem.id.x() #0
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%cmp0 = icmp sgt i32 %cond0, 0
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%cmp1 = icmp sgt i32 %cond1, 0
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br i1 %cmp0, label %bb2, label %bb9
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bb2: ; preds = %bb
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%tmp2 = sext i1 %cmp1 to i32
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%tmp3 = add i32 %tmp2, %tmp
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br i1 %cmp1, label %bb9, label %bb7
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bb7: ; preds = %bb5
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store i32 %tmp3, i32 addrspace(1)* %out
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br label %bb9
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bb9: ; preds = %bb8, %bb4
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ret void
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}
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; SI-LABEL: {{^}}uniform_loop:
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; SI: {{^}}[[LOOP_LABEL:[A-Z0-9_a-z]+]]:
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; SI: s_add_i32 [[I:s[0-9]+]], s{{[0-9]+}}, -1
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; SI: s_cmp_lg_u32 [[I]], 0
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; SI: s_cbranch_scc1 [[LOOP_LABEL]]
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; SI: s_endpgm
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define amdgpu_kernel void @uniform_loop(i32 addrspace(1)* %out, i32 %a) {
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entry:
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br label %loop
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loop:
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%i = phi i32 [0, %entry], [%i.i, %loop]
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%i.i = add i32 %i, 1
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%cmp = icmp eq i32 %a, %i.i
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br i1 %cmp, label %done, label %loop
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done:
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ret void
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}
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; Test uniform and divergent.
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; GCN-LABEL: {{^}}uniform_inside_divergent:
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; GCN: v_cmp_gt_u32_e32 vcc, 16, v{{[0-9]+}}
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; GCN: s_and_saveexec_b64 [[MASK:s\[[0-9]+:[0-9]+\]]], vcc
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; GCN: s_xor_b64 [[MASK1:s\[[0-9]+:[0-9]+\]]], exec, [[MASK]]
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; GCN: s_cmp_lg_u32 {{s[0-9]+}}, 0
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; GCN: s_cbranch_scc0 [[IF_UNIFORM_LABEL:[A-Z0-9_a-z]+]]
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; GCN: s_endpgm
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; GCN: {{^}}[[IF_UNIFORM_LABEL]]:
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; GCN: v_mov_b32_e32 [[ONE:v[0-9]+]], 1
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; GCN: buffer_store_dword [[ONE]]
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define amdgpu_kernel void @uniform_inside_divergent(i32 addrspace(1)* %out, i32 %cond) {
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entry:
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%tid = call i32 @llvm.amdgcn.workitem.id.x() #0
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%d_cmp = icmp ult i32 %tid, 16
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br i1 %d_cmp, label %if, label %endif
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if:
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store i32 0, i32 addrspace(1)* %out
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%u_cmp = icmp eq i32 %cond, 0
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br i1 %u_cmp, label %if_uniform, label %endif
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if_uniform:
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store i32 1, i32 addrspace(1)* %out
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br label %endif
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endif:
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ret void
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}
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; GCN-LABEL: {{^}}divergent_inside_uniform:
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; GCN: s_cmp_lg_u32 s{{[0-9]+}}, 0
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; GCN: s_cbranch_scc0 [[IF_LABEL:[0-9_A-Za-z]+]]
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; GCN: [[IF_LABEL]]:
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; GCN: v_cmp_gt_u32_e32 vcc, 16, v{{[0-9]+}}
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; GCN: s_and_saveexec_b64 [[MASK:s\[[0-9]+:[0-9]+\]]], vcc
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; GCN: s_xor_b64 [[MASK1:s\[[0-9]+:[0-9]+\]]], exec, [[MASK]]
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; GCN: v_mov_b32_e32 [[ONE:v[0-9]+]], 1
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; GCN: buffer_store_dword [[ONE]]
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define amdgpu_kernel void @divergent_inside_uniform(i32 addrspace(1)* %out, i32 %cond) {
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entry:
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%u_cmp = icmp eq i32 %cond, 0
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br i1 %u_cmp, label %if, label %endif
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if:
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store i32 0, i32 addrspace(1)* %out
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%tid = call i32 @llvm.amdgcn.workitem.id.x() #0
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%d_cmp = icmp ult i32 %tid, 16
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br i1 %d_cmp, label %if_uniform, label %endif
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if_uniform:
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store i32 1, i32 addrspace(1)* %out
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br label %endif
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endif:
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ret void
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}
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; GCN-LABEL: {{^}}divergent_if_uniform_if:
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; GCN: v_cmp_eq_u32_e32 vcc, 0, v0
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; GCN: s_and_saveexec_b64 [[MASK:s\[[0-9]+:[0-9]+\]]], vcc
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; GCN: s_xor_b64 [[MASK:s\[[0-9]+:[0-9]+\]]], exec, [[MASK]]
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; GCN: v_mov_b32_e32 [[ONE:v[0-9]+]], 1
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; GCN: buffer_store_dword [[ONE]]
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; GCN: s_or_b64 exec, exec, [[MASK]]
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; GCN: s_cmp_lg_u32 s{{[0-9]+}}, 0
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; GCN: s_cbranch_scc0 [[IF_UNIFORM:[A-Z0-9_]+]]
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; GCN: s_endpgm
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; GCN: [[IF_UNIFORM]]:
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; GCN: v_mov_b32_e32 [[TWO:v[0-9]+]], 2
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; GCN: buffer_store_dword [[TWO]]
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define amdgpu_kernel void @divergent_if_uniform_if(i32 addrspace(1)* %out, i32 %cond) {
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entry:
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%tid = call i32 @llvm.amdgcn.workitem.id.x() #0
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%d_cmp = icmp eq i32 %tid, 0
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br i1 %d_cmp, label %if, label %endif
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if:
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store i32 1, i32 addrspace(1)* %out
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br label %endif
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endif:
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%u_cmp = icmp eq i32 %cond, 0
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br i1 %u_cmp, label %if_uniform, label %exit
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if_uniform:
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store i32 2, i32 addrspace(1)* %out
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br label %exit
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exit:
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ret void
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}
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; The condition of the branches in the two blocks are
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; uniform. MachineCSE replaces the 2nd condition with the inverse of
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; the first, leaving an scc use in a different block than it was
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; defed.
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; GCN-LABEL: {{^}}cse_uniform_condition_different_blocks:
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; GCN: s_load_dword [[COND:s[0-9]+]]
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; GCN: s_cmp_lt_i32 [[COND]], 1
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; GCN: s_cbranch_scc1 BB[[FNNUM:[0-9]+]]_3
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; GCN: BB#1:
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; GCN-NOT: cmp
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; GCN: buffer_load_dword
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; GCN: buffer_store_dword
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; GCN: s_cbranch_scc1 BB[[FNNUM]]_3
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; GCN: BB[[FNNUM]]_3:
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; GCN: s_endpgm
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define amdgpu_kernel void @cse_uniform_condition_different_blocks(i32 %cond, i32 addrspace(1)* %out) {
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bb:
|
|
%tmp = tail call i32 @llvm.amdgcn.workitem.id.x() #0
|
|
%tmp1 = icmp sgt i32 %cond, 0
|
|
br i1 %tmp1, label %bb2, label %bb9
|
|
|
|
bb2: ; preds = %bb
|
|
%tmp3 = load volatile i32, i32 addrspace(1)* undef
|
|
store volatile i32 0, i32 addrspace(1)* undef
|
|
%tmp9 = icmp sle i32 %cond, 0
|
|
br i1 %tmp9, label %bb9, label %bb7
|
|
|
|
bb7: ; preds = %bb5
|
|
store i32 %tmp3, i32 addrspace(1)* %out
|
|
br label %bb9
|
|
|
|
bb9: ; preds = %bb8, %bb4
|
|
ret void
|
|
}
|
|
|
|
; GCN-LABEL: {{^}}uniform_if_scc_i64_eq:
|
|
; VI-DAG: s_cmp_eq_u64 s{{\[[0-9]+:[0-9]+\]}}, 0
|
|
; GCN-DAG: s_mov_b32 [[S_VAL:s[0-9]+]], 0
|
|
|
|
; SI: v_cmp_eq_u64_e64
|
|
; SI: s_cbranch_vccnz [[IF_LABEL:[0-9_A-Za-z]+]]
|
|
|
|
; VI: s_cbranch_scc1 [[IF_LABEL:[0-9_A-Za-z]+]]
|
|
|
|
; Fall-through to the else
|
|
; GCN: s_mov_b32 [[S_VAL]], 1
|
|
|
|
; GCN: [[IF_LABEL]]:
|
|
; GCN: v_mov_b32_e32 [[V_VAL:v[0-9]+]], [[S_VAL]]
|
|
; GCN: buffer_store_dword [[V_VAL]]
|
|
define amdgpu_kernel void @uniform_if_scc_i64_eq(i64 %cond, i32 addrspace(1)* %out) {
|
|
entry:
|
|
%cmp0 = icmp eq i64 %cond, 0
|
|
br i1 %cmp0, label %if, label %else
|
|
|
|
if:
|
|
br label %done
|
|
|
|
else:
|
|
br label %done
|
|
|
|
done:
|
|
%value = phi i32 [0, %if], [1, %else]
|
|
store i32 %value, i32 addrspace(1)* %out
|
|
ret void
|
|
}
|
|
|
|
; GCN-LABEL: {{^}}uniform_if_scc_i64_ne:
|
|
; VI-DAG: s_cmp_lg_u64 s{{\[[0-9]+:[0-9]+\]}}, 0
|
|
; GCN-DAG: s_mov_b32 [[S_VAL:s[0-9]+]], 0
|
|
|
|
; SI: v_cmp_ne_u64_e64
|
|
; SI: s_cbranch_vccnz [[IF_LABEL:[0-9_A-Za-z]+]]
|
|
|
|
; VI: s_cbranch_scc1 [[IF_LABEL:[0-9_A-Za-z]+]]
|
|
|
|
; Fall-through to the else
|
|
; GCN: s_mov_b32 [[S_VAL]], 1
|
|
|
|
; GCN: [[IF_LABEL]]:
|
|
; GCN: v_mov_b32_e32 [[V_VAL:v[0-9]+]], [[S_VAL]]
|
|
; GCN: buffer_store_dword [[V_VAL]]
|
|
define amdgpu_kernel void @uniform_if_scc_i64_ne(i64 %cond, i32 addrspace(1)* %out) {
|
|
entry:
|
|
%cmp0 = icmp ne i64 %cond, 0
|
|
br i1 %cmp0, label %if, label %else
|
|
|
|
if:
|
|
br label %done
|
|
|
|
else:
|
|
br label %done
|
|
|
|
done:
|
|
%value = phi i32 [0, %if], [1, %else]
|
|
store i32 %value, i32 addrspace(1)* %out
|
|
ret void
|
|
}
|
|
|
|
; GCN-LABEL: {{^}}uniform_if_scc_i64_sgt:
|
|
; GCN: s_mov_b32 [[S_VAL:s[0-9]+]], 0
|
|
; GCN: v_cmp_gt_i64_e64
|
|
; GCN: s_cbranch_vccnz [[IF_LABEL:[0-9_A-Za-z]+]]
|
|
|
|
; Fall-through to the else
|
|
; GCN: s_mov_b32 [[S_VAL]], 1
|
|
|
|
; GCN: [[IF_LABEL]]:
|
|
; GCN: v_mov_b32_e32 [[V_VAL]], [[S_VAL]]
|
|
; GCN: buffer_store_dword [[V_VAL]]
|
|
define amdgpu_kernel void @uniform_if_scc_i64_sgt(i64 %cond, i32 addrspace(1)* %out) {
|
|
entry:
|
|
%cmp0 = icmp sgt i64 %cond, 0
|
|
br i1 %cmp0, label %if, label %else
|
|
|
|
if:
|
|
br label %done
|
|
|
|
else:
|
|
br label %done
|
|
|
|
done:
|
|
%value = phi i32 [0, %if], [1, %else]
|
|
store i32 %value, i32 addrspace(1)* %out
|
|
ret void
|
|
}
|
|
|
|
; GCN-LABEL: {{^}}move_to_valu_i64_eq:
|
|
; GCN: v_cmp_eq_u64_e32
|
|
define amdgpu_kernel void @move_to_valu_i64_eq(i32 addrspace(1)* %out) {
|
|
%cond = load volatile i64, i64 addrspace(3)* undef
|
|
%cmp0 = icmp eq i64 %cond, 0
|
|
br i1 %cmp0, label %if, label %else
|
|
|
|
if:
|
|
br label %done
|
|
|
|
else:
|
|
br label %done
|
|
|
|
done:
|
|
%value = phi i32 [0, %if], [1, %else]
|
|
store i32 %value, i32 addrspace(1)* %out
|
|
ret void
|
|
}
|
|
|
|
; GCN-LABEL: {{^}}move_to_valu_i64_ne:
|
|
; GCN: v_cmp_ne_u64_e32
|
|
define amdgpu_kernel void @move_to_valu_i64_ne(i32 addrspace(1)* %out) {
|
|
%cond = load volatile i64, i64 addrspace(3)* undef
|
|
%cmp0 = icmp ne i64 %cond, 0
|
|
br i1 %cmp0, label %if, label %else
|
|
|
|
if:
|
|
br label %done
|
|
|
|
else:
|
|
br label %done
|
|
|
|
done:
|
|
%value = phi i32 [0, %if], [1, %else]
|
|
store i32 %value, i32 addrspace(1)* %out
|
|
ret void
|
|
}
|
|
|
|
declare i32 @llvm.amdgcn.workitem.id.x() #0
|
|
|
|
attributes #0 = { nounwind readnone }
|