search for: _gracefully_

Displaying 2 results from an estimated 2 matches for "_gracefully_".

2003 Dec 19
2
[LLVMdev] Union Type
...y a previous write of an integer into the array. Yes, I know, I should have chosen the pointer type as the basis for the array .. but then, it wouldn't work reliably on an 8086 with segmented memory model :) While various tests for word sizes and alignment rules could be used, this problem is _gracefully_ handled by unions. To rewrite the example above we would use something like: %a_union = union { int, char* }; %foo = global [ 10 x %a_union ]; void %func() { %int_ptr = getelementptr [10 x %a_union]* %foo, long 0, long 0, ubyte 0; %int_val = load int* %int_ptr; %char_ptr =...
2003 Dec 19
0
[LLVMdev] Union Type
...h 64 bit integer types: just take up two slots. Is there anything wrong with this approach? Using a union for the stacker stack on a 64-bit machine would waste a ton of space when integers are pushed. > While various tests for word sizes and alignment rules could be used, > this problem is _gracefully_ handled by unions. To rewrite the example The problem with adding unions is that it would require modifying _all of the LLVM code_ that looks at the type-system, and it doesn't seem like it gives us anything fundamentally new (like a vector type would). Also, forcing the front-end to generat...