; RUN: llc -mtriple=amdgcn -mcpu=tahiti -verify-machineinstrs -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck -check-prefix=GCN %s
; RUN: llc -mtriple=amdgcn -mcpu=tonga -verify-machineinstrs -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck -check-prefix=GCN %s
; This should end with an no-op sequence of exec mask manipulations
; Mask should be in original state after executed unreachable block
; GCN-LABEL: {{^}}uniform_br_trivial_ret_divergent_br_trivial_unreachable:
; GCN: s_cbranch_scc1 [[RET_BB:.LBB[0-9]+_[0-9]+]]
; GCN-NEXT: ; %else
; GCN: s_and_saveexec_b64 [[SAVE_EXEC:s\[[0-9]+:[0-9]+\]]], vcc
; GCN: ; %bb.{{[0-9]+}}: ; %unreachable.bb
; GCN-NEXT: ; divergent unreachable
; GCN-NEXT: ; %bb.{{[0-9]+}}: ; %Flow
; GCN-NEXT: s_or_b64 exec, exec
; GCN-NEXT: [[RET_BB]]:
; GCN-NEXT: ; return
; GCN-NEXT: .Lfunc_end0
define amdgpu_ps <{ i32, i32, i32, i32, i32, i32, i32, i32, i32, float, float, float, float, float, float, float, float, float, float, float, float, float, float }> @uniform_br_trivial_ret_divergent_br_trivial_unreachable(ptr addrspace(4) inreg %arg, ptr addrspace(4) inreg %arg1, ptr addrspace(4) inreg %arg2, ptr addrspace(4) inreg %arg3, float inreg %arg4, i32 inreg %arg5, <2 x i32> %arg6, <2 x i32> %arg7, <2 x i32> %arg8, <3 x i32> %arg9, <2 x i32> %arg10, <2 x i32> %arg11, <2 x i32> %arg12, float %arg13, float %arg14, float %arg15, float %arg16, i32 inreg %arg17, i32 %arg18, i32 %arg19, float %arg20, i32 %arg21) #0 {
entry:
%i.i = extractelement <2 x i32> %arg7, i32 0
%j.i = extractelement <2 x i32> %arg7, i32 1
%i.f.i = bitcast i32 %i.i to float
%j.f.i = bitcast i32 %j.i to float
%p1.i = call float @llvm.amdgcn.interp.p1(float %i.f.i, i32 1, i32 0, i32 %arg5) #2
%p2 = call float @llvm.amdgcn.interp.p2(float %p1.i, float %j.f.i, i32 1, i32 0, i32 %arg5) #2
%p87 = fmul float %p2, %p2
%p88 = fadd float %p87, %p87
%p93 = fadd float %p88, %p88
%p97 = fmul float %p93, %p93
%p102 = fsub float %p97, %p97
%p104 = fmul float %p102, %p102
%p106 = fadd float 0.000000e+00, %p104
%p108 = fadd float %p106, %p106
%uniform.cond = icmp slt i32 %arg17, 0
br i1 %uniform.cond, label %ret.bb, label %else
else: ; preds = %main_body
%p124 = fmul float %p108, %p108
%p125 = fsub float %p124, %p124
%divergent.cond = fcmp olt float %p125, 0.000000e+00
br i1 %divergent.cond, label %ret.bb, label %unreachable.bb
unreachable.bb: ; preds = %else
unreachable
ret.bb: ; preds = %else, %main_body
ret <{ i32, i32, i32, i32, i32, i32, i32, i32, i32, float, float, float, float, float, float, float, float, float, float, float, float, float, float }> undef
}
; GCN-LABEL: {{^}}uniform_br_nontrivial_ret_divergent_br_nontrivial_unreachable:
; GCN: s_cbranch_vccz
; GCN: ; %bb.{{[0-9]+}}: ; %Flow
; GCN: s_cbranch_execnz [[RETURN:.LBB[0-9]+_[0-9]+]]
; GCN: ; %UnifiedReturnBlock
; GCN-NEXT: s_or_b64 exec, exec
; GCN-NEXT: s_waitcnt
; GCN: .LBB{{[0-9]+_[0-9]+}}: ; %else
; GCN: s_and_saveexec_b64 [[SAVE_EXEC:s\[[0-9]+:[0-9]+\]]], vcc
; GCN-NEXT: s_cbranch_execz .LBB1_{{[0-9]+}}
; GCN-NEXT: ; %unreachable.bb
; GCN: ds_write_b32
; GCN: ; divergent unreachable
; GCN: ; %ret.bb
; GCN: store_dword
define amdgpu_ps <{ i32, i32, i32, i32, i32, i32, i32, i32, i32, float, float, float, float, float, float, float, float, float, float, float, float, float, float }> @uniform_br_nontrivial_ret_divergent_br_nontrivial_unreachable(ptr addrspace(4) inreg %arg, ptr addrspace(4) inreg %arg1, ptr addrspace(4) inreg %arg2, ptr addrspace(4) inreg %arg3, float inreg %arg4, i32 inreg %arg5, <2 x i32> %arg6, <2 x i32> %arg7, <2 x i32> %arg8, <3 x i32> %arg9, <2 x i32> %arg10, <2 x i32> %arg11, <2 x i32> %arg12, float %arg13, float %arg14, float %arg15, float %arg16, float %arg17, i32 inreg %arg18, i32 %arg19, float %arg20, i32 %arg21) #0 {
main_body:
%i.i = extractelement <2 x i32> %arg7, i32 0
%j.i = extractelement <2 x i32> %arg7, i32 1
%i.f.i = bitcast i32 %i.i to float
%j.f.i = bitcast i32 %j.i to float
%p1.i = call float @llvm.amdgcn.interp.p1(float %i.f.i, i32 1, i32 0, i32 %arg5) #2
%p2 = call float @llvm.amdgcn.interp.p2(float %p1.i, float %j.f.i, i32 1, i32 0, i32 %arg5) #2
%p87 = fmul float %p2, %p2
%p88 = fadd float %p87, %p87
%p93 = fadd float %p88, %p88
%p97 = fmul float %p93, %p93
%p102 = fsub float %p97, %p97
%p104 = fmul float %p102, %p102
%p106 = fadd float 0.000000e+00, %p104
%p108 = fadd float %p106, %p106
%uniform.cond = icmp slt i32 %arg18, 0
br i1 %uniform.cond, label %ret.bb, label %else
else: ; preds = %main_body
%p124 = fmul float %p108, %p108
%p125 = fsub float %p124, %p124
%divergent.cond = fcmp olt float %p125, 0.000000e+00
br i1 %divergent.cond, label %ret.bb, label %unreachable.bb
unreachable.bb: ; preds = %else
store volatile i32 8, ptr addrspace(3) undef
unreachable
ret.bb: ; preds = %else, %main_body
store volatile i32 11, ptr addrspace(1) undef
ret <{ i32, i32, i32, i32, i32, i32, i32, i32, i32, float, float, float, float, float, float, float, float, float, float, float, float, float, float }> undef
}
; Function Attrs: nounwind readnone
declare float @llvm.amdgcn.interp.p1(float, i32, i32, i32) #1
; Function Attrs: nounwind readnone
declare float @llvm.amdgcn.interp.p2(float, float, i32, i32, i32) #1
; Function Attrs: nounwind readnone
declare float @llvm.amdgcn.interp.mov(i32, i32, i32, i32) #1
; Function Attrs: nounwind readnone
declare float @llvm.fabs.f32(float) #1
; Function Attrs: nounwind readnone
declare float @llvm.sqrt.f32(float) #1
; Function Attrs: nounwind readnone
declare float @llvm.floor.f32(float) #1
attributes #0 = { "InitialPSInputAddr"="36983" }
attributes #1 = { nounwind readnone }
attributes #2 = { nounwind }
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