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min, max, abs

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This commit is contained in:
Ginger Bill
2016-09-02 14:14:12 +01:00
parent fa09d805e2
commit 25e9b9bc87
11 changed files with 335 additions and 55 deletions
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32
src/codegen/ssa.cpp
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@@ -1569,7 +1569,7 @@ ssaValue *ssa_build_single_expr(ssaProcedure *proc, AstNode *expr, TypeAndValue
case_ast_node(i, Ident, expr);
Entity *e = *map_get(&proc->module->info->uses, hash_pointer(expr));
if (e->kind == Entity_Builtin) {
GB_PANIC("TODO(bill): ssa_build_single_expr Entity_Builtin");
GB_PANIC("TODO(bill): ssa_build_single_expr Entity_Builtin `%.*s`", LIT(builtin_procs[e->Builtin.id].name));
return NULL;
}
@@ -2068,6 +2068,36 @@ ssaValue *ssa_build_single_expr(ssaProcedure *proc, AstNode *expr, TypeAndValue
ssa_emit_store(proc, ssa_emit_struct_gep(proc, slice, v_two32, t_int), cap);
return ssa_emit_load(proc, slice);
} break;
case BuiltinProc_min: {
ssaValue *x = ssa_build_expr(proc, ce->arg_list);
ssaValue *y = ssa_build_expr(proc, ce->arg_list->next);
Type *t = get_base_type(ssa_type(x));
Token lt = {Token_Lt};
ssaValue *cond = ssa_emit_comp(proc, lt, x, y);
return ssa_emit_select(proc, cond, x, y);
} break;
case BuiltinProc_max: {
ssaValue *x = ssa_build_expr(proc, ce->arg_list);
ssaValue *y = ssa_build_expr(proc, ce->arg_list->next);
Type *t = get_base_type(ssa_type(x));
Token gt = {Token_Gt};
ssaValue *cond = ssa_emit_comp(proc, gt, x, y);
return ssa_emit_select(proc, cond, x, y);
} break;
case BuiltinProc_abs: {
Token lt = {Token_Lt};
Token sub = {Token_Sub};
ssaValue *x = ssa_build_expr(proc, ce->arg_list);
Type *t = ssa_type(x);
ssaValue *neg_x = ssa_emit_arith(proc, sub, v_zero, x, t);
ssaValue *cond = ssa_emit_comp(proc, lt, x, v_zero);
return ssa_emit_select(proc, cond, neg_x, x);
} break;
}
}
}