search for: __typeid_typeid3_rotate_count

Displaying 2 results from an estimated 2 matches for "__typeid_typeid3_rotate_count".

2016 Oct 26
2
RFC: a more detailed design for ThinLTO + vcall CFI
...every cache entry containing a check for a class in that hierarchy. To avoid this, we only include resolutions in the summary and obtain the constants using absolute symbol references. Here is what the asm code may look like: baz: leaq __typeid_typeid3_global_addr(%rip), %rax subl %eax, %edi rorl $__typeid_typeid3_rotate_count, %edi cmpl $__typeid_typeid3_size, %edi ja .LBB2_1 movslq %edi, %rax leaq __typeid_typeid3_byte_array(%rip), %rcx movb (%rax,%rcx), %al andb $__typeid_typeid3_bitmask, %al shrb %al retq .LBB2_1: xorl %eax, %eax retq The appropriate representation for this at the IR level is the subject of the RFC...
2016 Oct 28
0
RFC: a more detailed design for ThinLTO + vcall CFI
...ck for a class in that hierarchy. To avoid this, we only > include resolutions in the summary and obtain the constants using absolute > symbol references. Here is what the asm code may look like: > > baz: > leaq __typeid_typeid3_global_addr(%rip), %rax > subl %eax, %edi > rorl $__typeid_typeid3_rotate_count, %edi > cmpl $__typeid_typeid3_size, %edi > ja .LBB2_1 > > movslq %edi, %rax > leaq __typeid_typeid3_byte_array(%rip), %rcx > movb (%rax,%rcx), %al > andb $__typeid_typeid3_bitmask, %al > shrb %al > retq > .LBB2_1: > xorl %eax, %eax > retq > > The appropria...