darkplaces/gmqcc
0
0
Fork 0
mirror of https://github.com/DarkPlacesEngine/gmqcc.git synced 2024-11-27 14:12:36 +00:00
Code Issues Projects Releases Packages Wiki Activity

Fix fold_superfluous

Browse source
This commit is contained in:
Dale Weiler 2013-10-04 07:10:58 -04:00
parent ffdd6df828
commit 300fb9905b
1 changed files with 19 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

29
fold.c
View file

@ -791,7 +791,7 @@ ast_expression *fold_intrin(fold_t *fold, const char *intrin, ast_expression **a
/*#define isstring(X) ((X)->vtype == TYPE_STRING)*/
/*#define isvector(X) ((X)->vtype == TYPE_VECTOR)*/
#define fold_immvalue_float(X) ((X)->constval.vfloat)
/*#define fold_immvalue_vector(X) ((X)->constval.vvec)*/
#define fold_immvalue_vector(X) ((X)->constval.vvec)
/*#define fold_immvalue_string(X) ((X)->constval.vstring)*/
#define fold_can_1(X) ((X)->hasvalue && (X)->cvq == CV_CONST)
/*#define fold_can_2(X,Y) (fold_can_1(X) && fold_can_1(Y))*/
@ -799,28 +799,37 @@ ast_expression *fold_intrin(fold_t *fold, const char *intrin, ast_expression **a
ast_expression *fold_superfluous(ast_expression *left, ast_expression *right, int op) {
ast_value *load;
if (!ast_istype(left, ast_value))
if (!ast_istype(left, ast_value) || !fold_can_1((load = (ast_value*)right)))
return NULL;
load = (ast_value*)right;
switch (op) {
case INSTR_MUL_F:
case INSTR_MUL_V:
case INSTR_MUL_FV:
case INSTR_MUL_VF:
case INSTR_DIV_F:
if (fold_can_1(load) && fold_immvalue_float(load) == 1.0f) {
if (fold_immvalue_float(load) == 1.0f) {
++opts_optimizationcount[OPTIM_PEEPHOLE];
return (ast_expression*)left;
}
break;
case INSTR_ADD_F:
case INSTR_ADD_V:
case INSTR_SUB_F:
if (fold_immvalue_float(load) == 0.0f) {
++opts_optimizationcount[OPTIM_PEEPHOLE];
return (ast_expression*)left;
}
break;
case INSTR_MUL_V:
if (vec3_cmp(fold_immvalue_vector(load), vec3_create(1, 1, 1))) {
++opts_optimizationcount[OPTIM_PEEPHOLE];
return (ast_expression*)left;
}
break;
case INSTR_ADD_V:
case INSTR_SUB_V:
if (fold_can_1(load) && fold_immvalue_float(load) == 0.0f) {
if (vec3_cmp(fold_immvalue_vector(load), vec3_create(0, 0, 0))) {
++opts_optimizationcount[OPTIM_PEEPHOLE];
return (ast_expression*)left;
}