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@ -58,11 +58,10 @@ Id SelectValue(EmitContext& ctx, Id in_range, Id value, Id src_thread_id) {
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ctx.OpGroupNonUniformShuffle(ctx.U32[1], SubgroupScope(ctx), value, src_thread_id), value);
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}
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Id GetUpperClamp(EmitContext& ctx, Id invocation_id, Id clamp) {
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const Id thirty_two{ctx.Const(32u)};
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const Id is_upper_partition{ctx.OpSGreaterThanEqual(ctx.U1, invocation_id, thirty_two)};
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const Id upper_clamp{ctx.OpIAdd(ctx.U32[1], thirty_two, clamp)};
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return ctx.OpSelect(ctx.U32[1], is_upper_partition, upper_clamp, clamp);
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Id AddPartitionBase(EmitContext& ctx, Id thread_id) {
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const Id partition_idx{ctx.OpShiftRightLogical(ctx.U32[1], GetThreadId(ctx), ctx.Const(5u))};
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const Id partition_base{ctx.OpShiftLeftLogical(ctx.U32[1], partition_idx, ctx.Const(5u))};
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return ctx.OpIAdd(ctx.U32[1], thread_id, partition_base);
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}
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} // Anonymous namespace
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@ -145,64 +144,63 @@ Id EmitSubgroupGeMask(EmitContext& ctx) {
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Id EmitShuffleIndex(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
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Id segmentation_mask) {
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const Id not_seg_mask{ctx.OpNot(ctx.U32[1], segmentation_mask)};
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const Id thread_id{GetThreadId(ctx)};
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if (ctx.profile.warp_size_potentially_larger_than_guest) {
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const Id thirty_two{ctx.Const(32u)};
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const Id is_upper_partition{ctx.OpSGreaterThanEqual(ctx.U1, thread_id, thirty_two)};
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const Id upper_index{ctx.OpIAdd(ctx.U32[1], thirty_two, index)};
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const Id upper_clamp{ctx.OpIAdd(ctx.U32[1], thirty_two, clamp)};
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index = ctx.OpSelect(ctx.U32[1], is_upper_partition, upper_index, index);
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clamp = ctx.OpSelect(ctx.U32[1], is_upper_partition, upper_clamp, clamp);
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}
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const Id thread_id{EmitLaneId(ctx)};
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const Id min_thread_id{ComputeMinThreadId(ctx, thread_id, segmentation_mask)};
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const Id max_thread_id{ComputeMaxThreadId(ctx, min_thread_id, clamp, not_seg_mask)};
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const Id lhs{ctx.OpBitwiseAnd(ctx.U32[1], index, not_seg_mask)};
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const Id src_thread_id{ctx.OpBitwiseOr(ctx.U32[1], lhs, min_thread_id)};
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Id src_thread_id{ctx.OpBitwiseOr(ctx.U32[1], lhs, min_thread_id)};
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const Id in_range{ctx.OpSLessThanEqual(ctx.U1, src_thread_id, max_thread_id)};
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if (ctx.profile.warp_size_potentially_larger_than_guest) {
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src_thread_id = AddPartitionBase(ctx, src_thread_id);
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}
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SetInBoundsFlag(inst, in_range);
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return SelectValue(ctx, in_range, value, src_thread_id);
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}
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Id EmitShuffleUp(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
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Id segmentation_mask) {
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const Id thread_id{GetThreadId(ctx)};
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if (ctx.profile.warp_size_potentially_larger_than_guest) {
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clamp = GetUpperClamp(ctx, thread_id, clamp);
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}
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const Id thread_id{EmitLaneId(ctx)};
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const Id max_thread_id{GetMaxThreadId(ctx, thread_id, clamp, segmentation_mask)};
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const Id src_thread_id{ctx.OpISub(ctx.U32[1], thread_id, index)};
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Id src_thread_id{ctx.OpISub(ctx.U32[1], thread_id, index)};
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const Id in_range{ctx.OpSGreaterThanEqual(ctx.U1, src_thread_id, max_thread_id)};
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if (ctx.profile.warp_size_potentially_larger_than_guest) {
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src_thread_id = AddPartitionBase(ctx, src_thread_id);
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}
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SetInBoundsFlag(inst, in_range);
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return SelectValue(ctx, in_range, value, src_thread_id);
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}
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Id EmitShuffleDown(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
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Id segmentation_mask) {
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const Id thread_id{GetThreadId(ctx)};
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if (ctx.profile.warp_size_potentially_larger_than_guest) {
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clamp = GetUpperClamp(ctx, thread_id, clamp);
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}
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const Id thread_id{EmitLaneId(ctx)};
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const Id max_thread_id{GetMaxThreadId(ctx, thread_id, clamp, segmentation_mask)};
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const Id src_thread_id{ctx.OpIAdd(ctx.U32[1], thread_id, index)};
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Id src_thread_id{ctx.OpIAdd(ctx.U32[1], thread_id, index)};
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const Id in_range{ctx.OpSLessThanEqual(ctx.U1, src_thread_id, max_thread_id)};
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if (ctx.profile.warp_size_potentially_larger_than_guest) {
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src_thread_id = AddPartitionBase(ctx, src_thread_id);
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}
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SetInBoundsFlag(inst, in_range);
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return SelectValue(ctx, in_range, value, src_thread_id);
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}
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Id EmitShuffleButterfly(EmitContext& ctx, IR::Inst* inst, Id value, Id index, Id clamp,
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Id segmentation_mask) {
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const Id thread_id{GetThreadId(ctx)};
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if (ctx.profile.warp_size_potentially_larger_than_guest) {
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clamp = GetUpperClamp(ctx, thread_id, clamp);
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}
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const Id thread_id{EmitLaneId(ctx)};
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const Id max_thread_id{GetMaxThreadId(ctx, thread_id, clamp, segmentation_mask)};
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const Id src_thread_id{ctx.OpBitwiseXor(ctx.U32[1], thread_id, index)};
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Id src_thread_id{ctx.OpBitwiseXor(ctx.U32[1], thread_id, index)};
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const Id in_range{ctx.OpSLessThanEqual(ctx.U1, src_thread_id, max_thread_id)};
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if (ctx.profile.warp_size_potentially_larger_than_guest) {
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src_thread_id = AddPartitionBase(ctx, src_thread_id);
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}
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SetInBoundsFlag(inst, in_range);
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return SelectValue(ctx, in_range, value, src_thread_id);
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}
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