Giovanni Mascellani : vkd3d-shader/hlsl: Add a helper for unary arithmetic operations.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: 32bfc8d0178e416cc69dd7faadfa79a5459ba9c5
URL:    https://source.winehq.org/git/vkd3d.git/?a=commit;h=32bfc8d0178e416cc69dd7fa...

Author: Giovanni Mascellani 
Date:   Fri Oct 15 10:37:02 2021 +0200

vkd3d-shader/hlsl: Add a helper for unary arithmetic operations.

The helper doesn't do much, but it is useful to mark operations as
arithmetic as opposed to other categories (like bitwise and boolean),
which have a different treatment.

It also saves an explicit variable to most callers, which can directly
pass the argument node instead of creating an array.

Signed-off-by: Giovanni Mascellani 
Signed-off-by: Henri Verbeet 
Signed-off-by: Matteo Bruni 
Signed-off-by: Zebediah Figura 
Signed-off-by: Alexandre Julliard

---

libs/vkd3d-shader/hlsl.y | 31 +++++++++++++------------------
 1 file changed, 13 insertions(+), 18 deletions(-)

diff --git a/libs/vkd3d-shader/hlsl.y b/libs/vkd3d-shader/hlsl.y
index aec33ca..b785c88 100644
--- a/libs/vkd3d-shader/hlsl.y
+++ b/libs/vkd3d-shader/hlsl.y
@@ -1058,15 +1058,12 @@ static struct hlsl_ir_expr *add_expr(struct hlsl_ctx *ctx, struct list *instrs,
     return expr;
 }

-static struct list *add_unary_expr(struct hlsl_ctx *ctx, struct list *instrs,
-        enum hlsl_ir_expr_op op, struct vkd3d_shader_location loc)
+static struct hlsl_ir_expr *add_unary_arithmetic_expr(struct hlsl_ctx *ctx, struct list *instrs,
+        enum hlsl_ir_expr_op op, struct hlsl_ir_node *arg, struct vkd3d_shader_location *loc)
 {
-    struct hlsl_ir_node *expr;
+    struct hlsl_ir_node *args[HLSL_MAX_OPERANDS] = {arg};

-    if (!(expr = hlsl_new_unary_expr(ctx, op, node_from_list(instrs), loc)))
-        return NULL;
-    list_add_tail(instrs, &expr->entry);
-    return instrs;
+    return add_expr(ctx, instrs, op, args, loc);
 }

static struct hlsl_ir_expr *add_binary_arithmetic_expr(struct hlsl_ctx *ctx, struct list *instrs,
@@ -1170,10 +1167,9 @@ static struct hlsl_ir_node *add_assignment(struct hlsl_ctx *ctx, struct list *in

if (assign_op == ASSIGN_OP_SUB)
     {
-        struct hlsl_ir_node *args[HLSL_MAX_OPERANDS] = {rhs};
         struct hlsl_ir_expr *expr;

-        if (!(expr = add_expr(ctx, instrs, HLSL_OP1_NEG, args, &rhs->loc)))
+        if (!(expr = add_unary_arithmetic_expr(ctx, instrs, HLSL_OP1_NEG, rhs, &rhs->loc)))
             return NULL;
         rhs = &expr->node;
         assign_op = ASSIGN_OP_ADD;
@@ -1585,9 +1581,7 @@ static const struct hlsl_ir_function_decl *find_function_call(struct hlsl_ctx *c
 static bool intrinsic_abs(struct hlsl_ctx *ctx,
         const struct parse_initializer *params, struct vkd3d_shader_location loc)
 {
-    struct hlsl_ir_node *args[HLSL_MAX_OPERANDS] = {params->args[0]};
-
-    return !!add_expr(ctx, params->instrs, HLSL_OP1_ABS, args, &loc);
+    return !!add_unary_arithmetic_expr(ctx, params->instrs, HLSL_OP1_ABS, params->args[0], &loc);
 }

static bool intrinsic_clamp(struct hlsl_ctx *ctx,
@@ -1629,9 +1623,7 @@ static bool intrinsic_pow(struct hlsl_ctx *ctx,
 static bool intrinsic_saturate(struct hlsl_ctx *ctx,
         const struct parse_initializer *params, struct vkd3d_shader_location loc)
 {
-    struct hlsl_ir_node *args[HLSL_MAX_OPERANDS] = {params->args[0]};
-
-    return !!add_expr(ctx, params->instrs, HLSL_OP1_SAT, args, &loc);
+    return !!add_unary_arithmetic_expr(ctx, params->instrs, HLSL_OP1_SAT, params->args[0], &loc);
 }

static const struct intrinsic_function
@@ -3208,15 +3200,18 @@ unary_expr:
         }
     | '-' unary_expr
         {
-            $$ = add_unary_expr(ctx, $2, HLSL_OP1_NEG, @1);
+            add_unary_arithmetic_expr(ctx, $2, HLSL_OP1_NEG, node_from_list($2), &@1);
+            $$ = $2;
         }
     | '~' unary_expr
         {
-            $$ = add_unary_expr(ctx, $2, HLSL_OP1_BIT_NOT, @1);
+            add_unary_arithmetic_expr(ctx, $2, HLSL_OP1_BIT_NOT, node_from_list($2), &@1);
+            $$ = $2;
         }
     | '!' unary_expr
         {
-            $$ = add_unary_expr(ctx, $2, HLSL_OP1_LOGIC_NOT, @1);
+            add_unary_arithmetic_expr(ctx, $2, HLSL_OP1_LOGIC_NOT, node_from_list($2), &@1);
+            $$ = $2;
         }
     /* var_modifiers is necessary to avoid shift/reduce conflicts. */
     | '(' var_modifiers type arrays ')' unary_expr