llvm - How to change LLVMPass long opt command to a simple Command -


i working on llvm obfuscation project. have written llvm pass(lets flow flattening pass) running on source (test.c) following command: 

clang -emit-llvm test.c -c -o test.bc  opt -load ../../.. llvmflattening.so -fla <test.bc>/dev/null

but have seen in o-llvm project achieved same thing using:

clang -emit-llvm test.c -c -o test.bc -mllvm -fla

can tell me -mllvm here , how changed simple command?

-mllvm means additional arguments forward llvm's option processing. therefore -mllvm -fla pass -fla llvm's option processing.

clang , llvm run seperately. if want clang run llvm, , have options want llvm aware. -mllvm need.

defautly, llvm not turn on transformation passes. -fla, llvm turn on pass registered command line argument fla call function registerpass<typename passname>.

in command line, opt's -load option used load plugin. if want use simple command line expect. pass need linked opt binary. done in following 2 ways:

  1. (without modify existing llvm source tree): add pass's source adding cmakelists.txt mentioned in link
  2. directly copy pass source code folder <llvm root>/lib/transform directory. , modify <llvm root>/lib/transform/cmakelists.txt, add add_subdirectory(<pass name>) line others.

Comments

Post a Comment

Popular posts from this blog

php - failed to open stream: HTTP request failed! HTTP/1.0 400 Bad Request -

this code i'm using find latitude , longitude of place: function coords($address){ echo $url="http://maps.googleapis.com/maps/api/geocode/json?address=".$address; $json = file_get_contents(urlencode($url)); $data = json_decode($json, true); print_r($data['results'][0]['geometry']['location']['lat']); print_r($data['results'][0]['geometry']['location']['lng']); } however returns warning: failed open stream: http request failed! http/1.0 400 bad request if use above code in simple procedure works fine not in function. note: have tried curl_init()... method produced same result? instead of encoding whole url encode address part. following code work fine $add='jamshoro phase 2'; $url="http://maps.googleapis.com/maps/api/geocode/json?address=".urlencode($add); $json = file_get_contents($url); $data = json_decode($json, true); print_r($data['r...
Read more

command line - Use qwinsta in PowerShell ISE -

i trying use qwinsta , rwinsta powershell code. when try run error "the term 'qwinsta' not recognized name of cmdlet, function, script file, or operable program." need able remotely on several machines without having add .dll's or modules other machines. tried terminal services powershell module, need able put on remote machines , not able that. within powershell ise how run qwinsta? not looking parse information gather it. following code have tried (which had found on site also): function get-tssessions { param( $computername = "localhost" ) qwinsta /server:$computername | #parse output foreach-object { $_.trim() -replace "\s+","," } | #convert objects convertfrom-csv } get-tssessions -computername "localhost" | ft -autosize best have running powershell ise (x86). when run command qwinsta there same error you. of course assuming have 64-bit os. th...
Read more

java - Incorrect order of records in M-M relationship in hibernate -

Image
i have 4 records in bridge table in mysql database. using @manytomany in hibernate, accurate order of employees incorrect incorrect of projects. following required material figure out doing mistake. this source. @entity @table(name="project") public class projectbean { @id @generatedvalue @column(name="project_id") private int projectid; @column(name="title") private string projecttitle; @manytomany(mappedby="projects") private collection<employeebean> employees; public projectbean() { employees = new arraylist<employeebean>(); } //getters & setters } @entity @table(name="employee") public class employeebean { @id @generatedvalue @column(name="employee_id") private int employee_id; @column(name="first_name") private string ...
Read more