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2013 Jan 09
2
[LLVMdev] attributes
I need to add two function attributes to clang that I can subsequently process in llvm. void __attribute__((mips16)) foo16 (); void __attribute__((nomips16)) foo32 (); int main() { foo16(); foo32(); } Does anyone know offhand where this gets added to clang and where the hook for processing in llc is? I think that this code has changed recently. These options mimick those of gcc. Tia. Reed
2008 Feb 24
0
Zeroing sensitive memory chunks [Was: Security Flaw in Popular Disk Encryption Technologies]
...\ scanf("%" #n "s", b); \ bzero(b, sizeof(b)); \ } foo(16) foo(24) foo(32) foo(1024) bar(16) bar(24) bar(28) bar(30) bar(31) bar(32) bar(1024) int main(void) { foo16(); foo24(); foo28(); foo32(); foo1024(); bar16(); bar24(); bar28(); bar30(); bar31(); bar32(); bar1024(); return 0; } ----- Compiled with '-O' switch, it eliminates bzero/memset for all functions with the local array size < 32. For example,...