[Mesa-dev] [PATCH] gm107/ir: Add stg, ldg instructions and function for checking offset length

[Mark Menzynski]

Nvidia actively uses these instructions, maybe they are better in
something.
Long offset checking function was made because these functions only have 24 bit
address offsets.

Signed-off-by: Mark Menzynski <mmenzyns at redhat.com>
---
 .../nouveau/codegen/nv50_ir_emit_gm107.cpp    | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp
index 6eefe8f0025..c01a3017ba9 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp
@@ -87,6 +87,7 @@ private:
    inline void emitADDR(int, int, int, int, const ValueRef &);
    inline void emitCBUF(int, int, int, int, int, const ValueRef &);
    inline bool longIMMD(const ValueRef &);
+   inline bool longOffset(const ValueRef &);
    inline void emitIMMD(int, int, const ValueRef &);
 
    void emitCond3(int, CondCode);
@@ -174,9 +175,11 @@ private:
    void emitLDC();
    void emitLDL();
    void emitLDS();
+   void emitLDG();
    void emitLD();
    void emitSTL();
    void emitSTS();
+   void emitSTG();
    void emitST();
    void emitALD();
    void emitAST();
@@ -333,6 +336,17 @@ CodeEmitterGM107::longIMMD(const ValueRef &ref)
    return false;
 }
 
+bool
+CodeEmitterGM107::longOffset(const ValueRef &ref)
+{
+   // TODO: check for other files as well?
+   if (ref.getFile() != FILE_MEMORY_GLOBAL)
+      return false;
+
+   int32_t offset = ref.get()->reg.data.offset;
+   return offset >  0x7fffff || offset < -0x800000;
+}
+
 void
 CodeEmitterGM107::emitIMMD(int pos, int len, const ValueRef &ref)
 {
@@ -2414,6 +2428,17 @@ CodeEmitterGM107::emitLDS()
    emitGPR  (0x00, insn->def(0));
 }
 
+void
+CodeEmitterGM107::emitLDG()
+{
+   emitInsn (0xeed00000);
+   emitLDSTs(0x30, insn->dType);
+   emitLDSTc(0x2e);
+   emitField(0x2d, 1, insn->src(0).getIndirect(0)->getSize() == 8);
+   emitADDR (0x08, 0x14, 24, 0, insn->src(0));
+   emitGPR  (0x00, insn->def(0));
+}
+
 void
 CodeEmitterGM107::emitLD()
 {
@@ -2445,6 +2470,17 @@ CodeEmitterGM107::emitSTS()
    emitGPR  (0x00, insn->src(1));
 }
 
+void
+CodeEmitterGM107::emitSTG()
+{
+   emitInsn (0xeed80000);
+   emitLDSTs(0x30, insn->dType);
+   emitLDSTc(0x2e);
+   emitField(0x2d, 1, insn->src(0).getIndirect(0)->getSize() == 8);
+   emitADDR (0x08, 0x14, 24, 0, insn->src(0));
+   emitGPR  (0x00, insn->src(1));
+}
+
 void
 CodeEmitterGM107::emitST()
 {
-- 
2.21.0