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Use XOR directly rather than (~x) & mask

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This commit is contained in:
gingerBill
2024-08-30 10:52:11 +01:00
parent 38ea276231
commit 9197a126fc
1 changed files with 3 additions and 2 deletions
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src/llvm_backend_expr.cpp
+3 -2
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@@ -182,11 +182,12 @@ gb_internal lbValue lb_emit_unary_arith(lbProcedure *p, TokenKind op, lbValue x,
if (op == Token_Xor) {
lbValue cmp = {};
cmp.type = x.type;
cmp.value = LLVMBuildNot(p->builder, x.value, "");
if (is_type_bit_set(x.type)) {
ExactValue ev_mask = exact_bit_set_all_set_mask(x.type);
lbValue mask = lb_const_value(p->module, x.type, ev_mask);
cmp.value = LLVMBuildAnd(p->builder, cmp.value, mask.value, "");
cmp.value = LLVMBuildXor(p->builder, x.value, mask.value, "");
} else {
cmp.value = LLVMBuildNot(p->builder, x.value, "");
}
return lb_emit_conv(p, cmp, type);
}