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LTO llvm11 (#302)

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* new LTO mode for llvm 11

* remove unneeded afl-ld and env vars
This commit is contained in:
van Hauser
2020-04-09 10:36:28 +02:00
committed by GitHub
parent b55421d4a1
commit 45e569845e
6 changed files with 60 additions and 1004 deletions
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21
llvm_mode/afl-clang-fast.c
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@ -269,12 +269,6 @@ static void edit_params(u32 argc, char **argv, char **envp) {
if (instrument_mode == INSTRUMENT_LTO) {
char *old_path = getenv("PATH");
char *new_path = alloc_printf("%s:%s", AFL_PATH, old_path);
setenv("PATH", new_path, 1);
setenv("AFL_LD", "1", 1);
if (getenv("AFL_LLVM_WHITELIST") != NULL) {
cc_params[cc_par_cnt++] = "-Xclang";
@ -285,13 +279,10 @@ static void edit_params(u32 argc, char **argv, char **envp) {
}
#ifdef AFL_CLANG_FUSELD
cc_params[cc_par_cnt++] = alloc_printf("-fuse-ld=%s/afl-ld", AFL_PATH);
#endif
cc_params[cc_par_cnt++] = "-B";
cc_params[cc_par_cnt++] = AFL_PATH;
cc_params[cc_par_cnt++] = alloc_printf("-fuse-ld=%s", AFL_REAL_LD);
cc_params[cc_par_cnt++] = "-Wl,--allow-multiple-definition";
cc_params[cc_par_cnt++] = alloc_printf(
"-Wl,-mllvm=-load=%s/afl-llvm-lto-instrumentation.so", obj_path);
cc_params[cc_par_cnt++] = lto_flag;
} else {
@ -738,9 +729,7 @@ int main(int argc, char **argv, char **envp) {
"bb\n"
"AFL_LLVM_LTO_DONTWRITEID: don't write the highest ID used to a "
"global var\n"
"AFL_REAL_LD: use this linker instead of the compiled in path\n"
"AFL_LD_PASSTHROUGH: do not perform instrumentation (for configure "
"scripts)\n"
"AFL_REAL_LD: use this lld linker instead of the compiled in path\n"
"\nafl-clang-lto was built with linker target \"%s\" and LTO flags "
"\"%s\"\n"
"If anything fails - be sure to read README.lto.md!\n",