nir/spirv: Update to the latest revision

src/glsl/nir/nir_spirv.h

@@ -32,8 +32,16 @@
 
 #include "nir.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 nir_shader *spirv_to_nir(const uint32_t *words, size_t word_count,
                          gl_shader_stage stage,
                          const nir_shader_compiler_options *options);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _NIR_SPIRV_H_ */

src/glsl/nir/spirv_glsl450_to_nir.c

@@ -139,13 +139,14 @@ handle_glsl450_alu(struct vtn_builder *b, enum GLSL450Entrypoint entrypoint,
                    const uint32_t *w, unsigned count)
 {
    struct vtn_value *val = vtn_push_value(b, w[2], vtn_value_type_ssa);
-   val->type = vtn_value(b, w[1], vtn_value_type_type)->type;
+   val->ssa = rzalloc(b, struct vtn_ssa_value);
+   val->ssa->type = vtn_value(b, w[1], vtn_value_type_type)->type->type;
 
    /* Collect the various SSA sources */
    unsigned num_inputs = count - 5;
    nir_ssa_def *src[3];
    for (unsigned i = 0; i < num_inputs; i++)
-      src[i] = vtn_ssa_value(b, w[i + 5]);
+      src[i] = vtn_ssa_value(b, w[i + 5])->def;
 
    nir_op op;
    switch (entrypoint) {
@@ -158,16 +159,16 @@ handle_glsl450_alu(struct vtn_builder *b, enum GLSL450Entrypoint entrypoint,
    case Ceil:        op = nir_op_fceil;         break;
    case Fract:       op = nir_op_ffract;        break;
    case Radians:
-      val->ssa = nir_fmul(&b->nb, src[0], nir_imm_float(&b->nb, 0.01745329251));
+      val->ssa->def = nir_fmul(&b->nb, src[0], nir_imm_float(&b->nb, 0.01745329251));
       return;
    case Degrees:
-      val->ssa = nir_fmul(&b->nb, src[0], nir_imm_float(&b->nb, 57.2957795131));
+      val->ssa->def = nir_fmul(&b->nb, src[0], nir_imm_float(&b->nb, 57.2957795131));
       return;
    case Sin:         op = nir_op_fsin;       break;
    case Cos:         op = nir_op_fcos;       break;
    case Tan:
-      val->ssa = nir_fdiv(&b->nb, nir_fsin(&b->nb, src[0]),
-                                  nir_fcos(&b->nb, src[0]));
+      val->ssa->def = nir_fdiv(&b->nb, nir_fsin(&b->nb, src[0]),
+                               nir_fcos(&b->nb, src[0]));
       return;
    case Pow:         op = nir_op_fpow;       break;
    case Exp2:        op = nir_op_fexp2;      break;
@@ -180,7 +181,7 @@ handle_glsl450_alu(struct vtn_builder *b, enum GLSL450Entrypoint entrypoint,
    case Max:         op = nir_op_fmax;       break;
    case Mix:         op = nir_op_flrp;       break;
    case Step:
-      val->ssa = nir_sge(&b->nb, src[1], src[0]);
+      val->ssa->def = nir_sge(&b->nb, src[1], src[0]);
       return;
 
    case FloatBitsToInt:
@@ -188,7 +189,7 @@ handle_glsl450_alu(struct vtn_builder *b, enum GLSL450Entrypoint entrypoint,
    case IntBitsToFloat:
    case UintBitsToFloat:
       /* Probably going to be removed from the final version of the spec. */
-      val->ssa = src[0];
+      val->ssa->def = src[0];
       return;
 
    case Fma:         op = nir_op_ffma;       break;
@@ -207,13 +208,13 @@ handle_glsl450_alu(struct vtn_builder *b, enum GLSL450Entrypoint entrypoint,
    case UnpackHalf2x16:    op = nir_op_unpack_half_2x16;    break;
 
    case Length:
-      val->ssa = build_length(&b->nb, src[0]);
+      val->ssa->def = build_length(&b->nb, src[0]);
       return;
    case Distance:
-      val->ssa = build_length(&b->nb, nir_fsub(&b->nb, src[0], src[1]));
+      val->ssa->def = build_length(&b->nb, nir_fsub(&b->nb, src[0], src[1]));
       return;
    case Normalize:
-      val->ssa = nir_fdiv(&b->nb, src[0], build_length(&b->nb, src[0]));
+      val->ssa->def = nir_fdiv(&b->nb, src[0], build_length(&b->nb, src[0]));
       return;
 
    case UaddCarry:         op = nir_op_uadd_carry;          break;
@@ -255,8 +256,8 @@ handle_glsl450_alu(struct vtn_builder *b, enum GLSL450Entrypoint entrypoint,
 
    nir_alu_instr *instr = nir_alu_instr_create(b->shader, op);
    nir_ssa_dest_init(&instr->instr, &instr->dest.dest,
-                     glsl_get_vector_elements(val->type), val->name);
-   val->ssa = &instr->dest.dest.ssa;
+                     glsl_get_vector_elements(val->ssa->type), val->name);
+   val->ssa->def = &instr->dest.dest.ssa;
 
    for (unsigned i = 0; i < nir_op_infos[op].num_inputs; i++)
       instr->src[i].src = nir_src_for_ssa(src[i]);

src/glsl/nir/spirv_to_nir_private.h

@@ -25,6 +25,7 @@
  *
  */
 
+#include "nir.h"
 #include "nir_spirv.h"
 #include "nir_builder.h"
 #include "spirv.h"
@@ -60,30 +61,88 @@ struct vtn_function {
 
    nir_function_overload *overload;
    struct vtn_block *start_block;
+
+   const uint32_t *end;
 };
 
 typedef bool (*vtn_instruction_handler)(struct vtn_builder *, uint32_t,
                                         const uint32_t *, unsigned);
 
+struct vtn_ssa_value {
+   union {
+      nir_ssa_def *def;
+      struct vtn_ssa_value **elems;
+   };
+
+   /* For matrices, a transposed version of the value, or NULL if it hasn't
+    * been computed
+    */
+   struct vtn_ssa_value *transposed;
+
+   const struct glsl_type *type;
+};
+
+struct vtn_type {
+   const struct glsl_type *type;
+
+   /* for matrices, whether the matrix is stored row-major */
+   bool row_major;
+
+   /* for structs, the offset of each member */
+   unsigned *offsets;
+
+   /* for structs, whether it was decorated as a "non-SSBO-like" block */
+   bool block;
+
+   /* for structs, whether it was decorated as an "SSBO-like" block */
+   bool buffer_block;
+
+   /* for structs with block == true, whether this is a builtin block (i.e. a
+    * block that contains only builtins).
+    */
+   bool builtin_block;
+
+   /* for arrays and matrices, the array stride */
+   unsigned stride;
+
+   /* for arrays, the vtn_type for the elements of the array */
+   struct vtn_type *array_element;
+
+   /* for structures, the vtn_type for each member */
+   struct vtn_type **members;
+
+   /* Whether this type, or a parent type, has been decorated as a builtin */
+   bool is_builtin;
+
+   SpvBuiltIn builtin;
+};
+
 struct vtn_value {
    enum vtn_value_type value_type;
    const char *name;
    struct vtn_decoration *decoration;
-   const struct glsl_type *type;
    union {
       void *ptr;
       char *str;
-      nir_constant *constant;
-      nir_deref_var *deref;
+      struct vtn_type *type;
+      struct {
+         nir_constant *constant;
+         const struct glsl_type *const_type;
+      };
+      struct {
+         nir_deref_var *deref;
+         struct vtn_type *deref_type;
+      };
       struct vtn_function *func;
       struct vtn_block *block;
-      nir_ssa_def *ssa;
+      struct vtn_ssa_value *ssa;
       vtn_instruction_handler ext_handler;
    };
 };
 
 struct vtn_decoration {
    struct vtn_decoration *next;
+   int member; /* -1 if not a member decoration */
    const uint32_t *literals;
    struct vtn_value *group;
    SpvDecoration decoration;
@@ -96,6 +155,25 @@ struct vtn_builder {
    nir_function_impl *impl;
    struct vtn_block *block;
 
+   /*
+    * In SPIR-V, constants are global, whereas in NIR, the load_const
+    * instruction we use is per-function. So while we parse each function, we
+    * keep a hash table of constants we've resolved to nir_ssa_value's so
+    * far, and we lazily resolve them when we see them used in a function.
+    */
+   struct hash_table *const_table;
+
+   /*
+    * Map from nir_block to the vtn_block which ends with it -- used for
+    * handling phi nodes.
+    */
+   struct hash_table *block_table;
+
+   /*
+    * NIR variable for each SPIR-V builtin.
+    */
+   nir_variable *builtins[42]; /* XXX need symbolic constant from SPIR-V header */
+
    unsigned value_id_bound;
    struct vtn_value *values;
 
@@ -134,10 +212,11 @@ vtn_value(struct vtn_builder *b, uint32_t value_id,
    return val;
 }
 
-nir_ssa_def *vtn_ssa_value(struct vtn_builder *b, uint32_t value_id);
+struct vtn_ssa_value *vtn_ssa_value(struct vtn_builder *b, uint32_t value_id);
 
 typedef void (*vtn_decoration_foreach_cb)(struct vtn_builder *,
                                           struct vtn_value *,
+                                          int member,
                                           const struct vtn_decoration *,
                                           void *);