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Add -integer-division-by-zero:self

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This commit is contained in:
gingerBill
2025-08-08 10:41:05 +01:00
parent 991883d0e1
commit ee01643229
5 changed files with 48 additions and 14 deletions
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17
src/llvm_backend_expr.cpp
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@@ -302,6 +302,9 @@ gb_internal IntegerDivisionByZeroKind lb_check_for_integer_division_by_zero_beha
if (flags & OptInFeatureFlag_IntegerDivisionByZero_Zero) {
return IntegerDivisionByZero_Zero;
}
if (flags & OptInFeatureFlag_IntegerDivisionByZero_Self) {
return IntegerDivisionByZero_Self;
}
}
return build_context.integer_division_by_zero_behaviour;
}
@@ -1159,7 +1162,6 @@ gb_internal LLVMValueRef lb_integer_division(lbProcedure *p, LLVMValueRef lhs, L
lb_start_block(p, edge_case_block);
incoming_values[1] = zero;
switch (lb_check_for_integer_division_by_zero_behaviour(p)) {
case IntegerDivisionByZero_Trap:
@@ -1167,7 +1169,10 @@ gb_internal LLVMValueRef lb_integer_division(lbProcedure *p, LLVMValueRef lhs, L
LLVMBuildUnreachable(p->builder);
break;
case IntegerDivisionByZero_Zero:
// Already fine
incoming_values[1] = zero;
break;
case IntegerDivisionByZero_Self:
incoming_values[1] = lhs;
break;
}
@@ -1178,6 +1183,7 @@ gb_internal LLVMValueRef lb_integer_division(lbProcedure *p, LLVMValueRef lhs, L
switch (lb_check_for_integer_division_by_zero_behaviour(p)) {
case IntegerDivisionByZero_Trap:
case IntegerDivisionByZero_Self:
res = incoming_values[0];
break;
case IntegerDivisionByZero_Zero:
@@ -1242,7 +1248,6 @@ gb_internal LLVMValueRef lb_integer_modulo(lbProcedure *p, LLVMValueRef lhs, LLV
IFF a/0 == 0, then (a%0 == a) or (a%%0 == a)
*/
incoming_values[1] = lhs;
switch (lb_check_for_integer_division_by_zero_behaviour(p)) {
case IntegerDivisionByZero_Trap:
@@ -1250,7 +1255,10 @@ gb_internal LLVMValueRef lb_integer_modulo(lbProcedure *p, LLVMValueRef lhs, LLV
LLVMBuildUnreachable(p->builder);
break;
case IntegerDivisionByZero_Zero:
// Already fine
incoming_values[1] = lhs;
break;
case IntegerDivisionByZero_Self:
incoming_values[1] = zero;
break;
}
@@ -1261,6 +1269,7 @@ gb_internal LLVMValueRef lb_integer_modulo(lbProcedure *p, LLVMValueRef lhs, LLV
switch (lb_check_for_integer_division_by_zero_behaviour(p)) {
case IntegerDivisionByZero_Trap:
case IntegerDivisionByZero_Self:
res = incoming_values[0];
break;
case IntegerDivisionByZero_Zero: