mesa: glsl: re-org of intermediate/temp storage

Simplify the code for allocating storage for intermediate results.  Use fewer
temps in some cases.

Also, use new asm vec4_move intrinsic instead of regular assigments in various
constructors.  For example:
  float f;
  vec3 v;
  v.xyz = f;
is not legal GLSL, so do this instead:
  __asm vec4_move v.xyz, f;  // note: f will auto-expand into f.xxxx

Plus, fix assorted bugs in structure comparison.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/mesa/shader/slang/slang_ir.c b/src/mesa/shader/slang/slang_ir.c
index 23d554234ee..3a0b8bf3a0d 100644
--- a/src/mesa/shader/slang/slang_ir.c
+++ b/src/mesa/shader/slang/slang_ir.c
@@ -54,7 +54,8 @@ static const slang_ir_info IrInfo[] = {
    { IR_NOTEQUAL, "IR_NOTEQUAL", OPCODE_NOP, 1, 2 },
 
    /* unary ops */
-   { IR_I_TO_F, "IR_I_TO_F", OPCODE_NOP, 1, 1 },
+   { IR_MOVE, "IR_MOVE", OPCODE_MOV, 4, 1 },
+   { IR_I_TO_F, "IR_I_TO_F", OPCODE_MOV, 4, 1 },  /* int[4] to float[4] */
    { IR_F_TO_I, "IR_F_TO_I", OPCODE_INT, 4, 1 }, /* 4 floats to 4 ints */
    { IR_EXP, "IR_EXP", OPCODE_EXP, 1, 1 },
    { IR_EXP2, "IR_EXP2", OPCODE_EX2, 1, 1 },
@@ -82,7 +83,7 @@ static const slang_ir_info IrInfo[] = {
    { IR_KILL, "IR_KILL", OPCODE_NOP, 0, 0 },
    { IR_COND, "IR_COND", OPCODE_NOP, 0, 0 },
    { IR_CALL, "IR_CALL", OPCODE_NOP, 0, 0 },
-   { IR_MOVE, "IR_MOVE", OPCODE_NOP, 0, 1 },
+   { IR_COPY, "IR_COPY", OPCODE_NOP, 0, 1 },
    { IR_NOT, "IR_NOT", OPCODE_NOP, 1, 1 },
    { IR_VAR, "IR_VAR", OPCODE_NOP, 0, 0 },
    { IR_VAR_DECL, "IR_VAR_DECL", OPCODE_NOP, 0, 0 },
@@ -326,8 +327,8 @@ _slang_print_ir_tree(const slang_ir_node *n, int indent)
       assert(!n->Children[1]);
       _slang_print_ir_tree(n->Children[0], indent + 3);
       break;
-   case IR_MOVE:
-      printf("MOVE (writemask = %s)\n", writemask_string(n->Writemask));
+   case IR_COPY:
+      printf("COPY (writemask = %s)\n", writemask_string(n->Writemask));
       _slang_print_ir_tree(n->Children[0], indent+3);
       _slang_print_ir_tree(n->Children[1], indent+3);
       break;