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Add #+feature integer-division-by-zero:<string>

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This commit is contained in:
gingerBill
2025-08-08 10:24:44 +01:00
parent e4a0228a80
commit 991883d0e1
4 changed files with 77 additions and 22 deletions
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src/llvm_backend_expr.cpp
+24 -6
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@@ -283,8 +283,26 @@ gb_internal lbValue lb_emit_unary_arith(lbProcedure *p, TokenKind op, lbValue x,
return res;
}
gb_internal IntegerDivisionByZeroKind lb_check_for_integer_division_by_zero(lbProcedure *p) {
// TODO(bill): per file `#+feature` flags
gb_internal IntegerDivisionByZeroKind lb_check_for_integer_division_by_zero_behaviour(lbProcedure *p) {
AstFile *file = nullptr;
if (p->body && p->body->file()) {
file = p->body->file();
} else if (p->type_expr && p->type_expr->file()) {
file = p->type_expr->file();
} else if (p->entity && p->entity->file) {
file = p->entity->file;
}
if (file != nullptr && file->feature_flags_set) {
u64 flags = file->feature_flags;
if (flags & OptInFeatureFlag_IntegerDivisionByZero_Trap) {
return IntegerDivisionByZero_Trap;
}
if (flags & OptInFeatureFlag_IntegerDivisionByZero_Zero) {
return IntegerDivisionByZero_Zero;
}
}
return build_context.integer_division_by_zero_behaviour;
}
@@ -1143,7 +1161,7 @@ gb_internal LLVMValueRef lb_integer_division(lbProcedure *p, LLVMValueRef lhs, L
incoming_values[1] = zero;
switch (lb_check_for_integer_division_by_zero(p)) {
switch (lb_check_for_integer_division_by_zero_behaviour(p)) {
case IntegerDivisionByZero_Trap:
lb_call_intrinsic(p, "llvm.trap", nullptr, 0, nullptr, 0);
LLVMBuildUnreachable(p->builder);
@@ -1158,7 +1176,7 @@ gb_internal LLVMValueRef lb_integer_division(lbProcedure *p, LLVMValueRef lhs, L
LLVMValueRef res = incoming_values[0];
switch (lb_check_for_integer_division_by_zero(p)) {
switch (lb_check_for_integer_division_by_zero_behaviour(p)) {
case IntegerDivisionByZero_Trap:
res = incoming_values[0];
break;
@@ -1226,7 +1244,7 @@ gb_internal LLVMValueRef lb_integer_modulo(lbProcedure *p, LLVMValueRef lhs, LLV
*/
incoming_values[1] = lhs;
switch (lb_check_for_integer_division_by_zero(p)) {
switch (lb_check_for_integer_division_by_zero_behaviour(p)) {
case IntegerDivisionByZero_Trap:
lb_call_intrinsic(p, "llvm.trap", nullptr, 0, nullptr, 0);
LLVMBuildUnreachable(p->builder);
@@ -1241,7 +1259,7 @@ gb_internal LLVMValueRef lb_integer_modulo(lbProcedure *p, LLVMValueRef lhs, LLV
LLVMValueRef res = incoming_values[0];
switch (lb_check_for_integer_division_by_zero(p)) {
switch (lb_check_for_integer_division_by_zero_behaviour(p)) {
case IntegerDivisionByZero_Trap:
res = incoming_values[0];
break;