nv50/ir: fetch indirect sources BEFORE the op that uses them

All the BuildUtil helpers just insert the operation into the current BB.
So we have to take care that any fetchSrc() operations happen before the
operation whose setIndirect() it goes into.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Cc: mesa-stable@lists.freedesktop.org
(cherry picked from commit 8c02ee4a8b0bea5dda3ced341dce81f340457c95)

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
index 92cc13d..617e9a3 100644 (file)
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
@@ -2628,6 +2628,10 @@ Converter::handleLOAD(Value *dst0[4])
    const int r = tgsi.getSrc(0).getIndex(0);
    int c;
    std::vector<Value *> off, src, ldv, def;
+   Value *ind = NULL;
+
+   if (tgsi.getSrc(0).isIndirect(0))
+      ind = fetchSrc(tgsi.getSrc(0).getIndirect(0), 0, 0);
 
    switch (tgsi.getSrc(0).getFile()) {
    case TGSI_FILE_BUFFER:
@@ -2654,8 +2658,8 @@ Converter::handleLOAD(Value *dst0[4])
 
          Instruction *ld = mkLoad(TYPE_U32, dst0[c], sym, off);
          ld->cache = tgsi.getCacheMode();
-         if (tgsi.getSrc(0).isIndirect(0))
-            ld->setIndirect(0, 1, fetchSrc(tgsi.getSrc(0).getIndirect(0), 0, 0));
+         if (ind)
+            ld->setIndirect(0, 1, ind);
       }
       break;
    case TGSI_FILE_IMAGE: {
@@ -2677,8 +2681,8 @@ Converter::handleLOAD(Value *dst0[4])
       ld->tex.mask = tgsi.getDst(0).getMask();
       ld->tex.format = getImageFormat(code, r);
       ld->cache = tgsi.getCacheMode();
-      if (tgsi.getSrc(0).isIndirect(0))
-         ld->setIndirectR(fetchSrc(tgsi.getSrc(0).getIndirect(0), 0, NULL));
+      if (ind)
+         ld->setIndirectR(ind);
 
       FOR_EACH_DST_ENABLED_CHANNEL(0, c, tgsi)
          if (dst0[c] != def[c])
@@ -2766,6 +2770,10 @@ Converter::handleSTORE()
    const int r = tgsi.getDst(0).getIndex(0);
    int c;
    std::vector<Value *> off, src, dummy;
+   Value *ind = NULL;
+
+   if (tgsi.getDst(0).isIndirect(0))
+      ind = fetchSrc(tgsi.getDst(0).getIndirect(0), 0, 0);
 
    switch (tgsi.getDst(0).getFile()) {
    case TGSI_FILE_BUFFER:
@@ -2788,8 +2796,8 @@ Converter::handleSTORE()
 
          Instruction *st = mkStore(OP_STORE, TYPE_U32, sym, off, fetchSrc(1, c));
          st->cache = tgsi.getCacheMode();
-         if (tgsi.getDst(0).isIndirect(0))
-            st->setIndirect(0, 1, fetchSrc(tgsi.getDst(0).getIndirect(0), 0, 0));
+         if (ind)
+            st->setIndirect(0, 1, ind);
       }
       break;
    case TGSI_FILE_IMAGE: {
@@ -2807,8 +2815,8 @@ Converter::handleSTORE()
       st->tex.mask = tgsi.getDst(0).getMask();
       st->tex.format = getImageFormat(code, r);
       st->cache = tgsi.getCacheMode();
-      if (tgsi.getDst(0).isIndirect(0))
-         st->setIndirectR(fetchSrc(tgsi.getDst(0).getIndirect(0), 0, NULL));
+      if (ind)
+         st->setIndirectR(ind);
       }
       break;
    default:
@@ -2877,6 +2885,10 @@ Converter::handleATOM(Value *dst0[4], DataType ty, uint16_t subOp)
    std::vector<Value *> srcv;
    std::vector<Value *> defv;
    LValue *dst = getScratch();
+   Value *ind = NULL;
+
+   if (tgsi.getSrc(0).isIndirect(0))
+      ind = fetchSrc(tgsi.getSrc(0).getIndirect(0), 0, 0);
 
    switch (tgsi.getSrc(0).getFile()) {
    case TGSI_FILE_BUFFER:
@@ -2886,23 +2898,21 @@ Converter::handleATOM(Value *dst0[4], DataType ty, uint16_t subOp)
             continue;
 
          Instruction *insn;
-         Value *off = fetchSrc(1, c), *off2 = NULL;
+         Value *off = fetchSrc(1, c);
          Value *sym;
          if (tgsi.getSrc(1).getFile() == TGSI_FILE_IMMEDIATE)
             sym = makeSym(tgsi.getSrc(0).getFile(), r, -1, c,
                           tgsi.getSrc(1).getValueU32(c, info));
          else
             sym = makeSym(tgsi.getSrc(0).getFile(), r, -1, c, 0);
-         if (tgsi.getSrc(0).isIndirect(0))
-            off2 = fetchSrc(tgsi.getSrc(0).getIndirect(0), 0, 0);
          if (subOp == NV50_IR_SUBOP_ATOM_CAS)
             insn = mkOp3(OP_ATOM, ty, dst, sym, fetchSrc(2, c), fetchSrc(3, c));
          else
             insn = mkOp2(OP_ATOM, ty, dst, sym, fetchSrc(2, c));
          if (tgsi.getSrc(1).getFile() != TGSI_FILE_IMMEDIATE)
             insn->setIndirect(0, 0, off);
-         if (off2)
-            insn->setIndirect(0, 1, off2);
+         if (ind)
+            insn->setIndirect(0, 1, ind);
          insn->subOp = subOp;
       }
       for (int c = 0; c < 4; ++c)
@@ -2925,8 +2935,8 @@ Converter::handleATOM(Value *dst0[4], DataType ty, uint16_t subOp)
       tex->tex.mask = 1;
       tex->tex.format = getImageFormat(code, r);
       tex->setType(ty);
-      if (tgsi.getSrc(0).isIndirect(0))
-         tex->setIndirectR(fetchSrc(tgsi.getSrc(0).getIndirect(0), 0, NULL));
+      if (ind)
+         tex->setIndirectR(ind);
 
       for (int c = 0; c < 4; ++c)
          if (dst0[c])
@@ -3798,12 +3808,14 @@ Converter::handleInstruction(const struct tgsi_full_instruction *insn)
       break;
    case TGSI_OPCODE_RESQ:
       if (tgsi.getSrc(0).getFile() == TGSI_FILE_BUFFER) {
+         Value *ind = NULL;
+         if (tgsi.getSrc(0).isIndirect(0))
+            ind = fetchSrc(tgsi.getSrc(0).getIndirect(0), 0, 0);
          geni = mkOp1(OP_BUFQ, TYPE_U32, dst0[0],
                       makeSym(tgsi.getSrc(0).getFile(),
                               tgsi.getSrc(0).getIndex(0), -1, 0, 0));
-         if (tgsi.getSrc(0).isIndirect(0))
-            geni->setIndirect(0, 1,
-                              fetchSrc(tgsi.getSrc(0).getIndirect(0), 0, 0));
+         if (ind)
+            geni->setIndirect(0, 1, ind);
       } else {
          assert(tgsi.getSrc(0).getFile() == TGSI_FILE_IMAGE);
 
@@ -3816,10 +3828,11 @@ Converter::handleInstruction(const struct tgsi_full_instruction *insn)
          }
          texi->tex.r = tgsi.getSrc(0).getIndex(0);
          texi->tex.target = getImageTarget(code, texi->tex.r);
-         bb->insertTail(texi);
 
          if (tgsi.getSrc(0).isIndirect(0))
             texi->setIndirectR(fetchSrc(tgsi.getSrc(0).getIndirect(0), 0, NULL));
+
+         bb->insertTail(texi);
       }
       break;
    case TGSI_OPCODE_IBFE: