r600/sfn: Add function to check whether a group loads a index register

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21347>

diff --git a/src/gallium/drivers/r600/sfn/sfn_instr_alugroup.cpp b/src/gallium/drivers/r600/sfn/sfn_instr_alugroup.cpp
index 7eb67b099af2dd1ed743aa672944f672e7c0c364..24d3baaedd6af87430eb8a6cfde1320d94f558e3 100644 (file)
--- a/src/gallium/drivers/r600/sfn/sfn_instr_alugroup.cpp
+++ b/src/gallium/drivers/r600/sfn/sfn_instr_alugroup.cpp
@@ -391,6 +391,15 @@ AluGroup::update_indirect_access(AluInstr *instr)
    return true;
 }
 
+bool AluGroup::index_mode_load()
+{
+   if (!m_slots[0] || !m_slots[0]->dest())
+      return false;
+
+   Register *dst = m_slots[0]->dest();
+   return dst->has_flag(Register::addr_or_idx) && dst->sel() > 0;
+}
+
 void
 AluGroup::accept(ConstInstrVisitor& visitor) const
 {

diff --git a/src/gallium/drivers/r600/sfn/sfn_instr_alugroup.h b/src/gallium/drivers/r600/sfn/sfn_instr_alugroup.h
index bfd05dabbe2b92ce5bf76167818c726512ebe0da..87194862602bba081582bf0a911e61f61661a05e 100644 (file)
--- a/src/gallium/drivers/r600/sfn/sfn_instr_alugroup.h
+++ b/src/gallium/drivers/r600/sfn/sfn_instr_alugroup.h
@@ -79,6 +79,8 @@ public:
       return m_slots[0] ? m_slots[0]->has_alu_flag(alu_lds_group_start) : false;
    }
 
+   bool index_mode_load();
+
    bool has_lds_group_end() const;
 
    const auto& readport_reserer() const { return m_readports_evaluator; }