llvm dev - Mar 2009 - [LLVMdev] store the LLVM-bitcode from a pass

Hi Duncan,

thanks for the answer. But    "opt  -load  ..../Decorator.so -dec
<prog.bc> new_prog.bc"
creates an invalid file. When i use "lli", i get "lli: error
loading program 'new_prog.bc': Invalid bitcode signature"

I have done the followings:
1) used "opt  -p -load  ..../Decorator.so -dec <prog.bc>
new_prog.bc"
2) copied the output from the screen and created the file "new_prog.s"
3) used "llvm-as   new_prog.s -o new_prog.bc"
4) and then  "lli   new_prog.bc"

And it works.

any idea?


thanks
Raad





________________________________
From: Duncan Sands <baldrick at free.fr>
To: llvmdev at cs.uiuc.edu
Cc: RAAD B <raad_7007 at yahoo.com>
Sent: Friday, March 13, 2009 12:28:52 PM
Subject: Re: [LLVMdev] store the LLVM-bitcode from a pass

Hi Raad,
> opt  -load  ..../Decorator.so -dec <prog.bc> /dev/null
> 
> how can i store the modified bitcode on the disc (as bitcode or as
human-readable assembly)?
  opt  -load  ..../Decorator.so -dec <prog.bc> new_prog.bc

Ciao,

Duncan.



      
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Hi, take a look inside the file new_prog.bc.  How does
it start?

Ciao,

Duncan.

These are the contents of the generated file.



Start
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; ModuleID = '<stdin>'
target datalayout =
"e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32"
target triple = "i386-pc-linux-gnu"
@.str = internal constant [12 x i8] c"hello world\00"        ; <[12
x i8]*> [#uses=1]

define i32 @main() {
entry:
    call void (...)* @jLLVMAnnotation(i32 2)
    call void (...)* @jLLVMAnnotation(i32 3, i32 4)
    %0 = tail call i32 @puts(i8* getelementptr ([12 x i8]* @.str, i32 0, i32 0))
; <i32> [#uses=0]
    ret i32 0
}

declare i32 @puts(i8*)

define void @jLLVMAnnotation(...) {
fncEntry:
    ret void
}
BCÀÞ!          #AÈI29%bEBB28I
2D$H
!#Dr!

d  Q      2"     e &DH    &DÆBB&90 $£¥##@ÁF J E ©  
¢t<°6qhvHw¨|hspzØPåÐð s z0r s mq x xÐézzmq`zv q`ms z0r s mv at z0r v at m`s
z0r s m`v at z0r v at m`v at z`t v at m`q x q x q xÐá z z`tÐæp s z0r ó@2B 3$    
$    Àd      È      2L    &GÆC:]Ðe6û
º¿ål2 S"      A,      # EP…@2A   c 0c 0ÇXá@    PÍa      a      Á…     à5S  
q      @0 ÒØÀåkjMãLÀ8¾4E&@<Ô$

End 
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<







________________________________
From: Duncan Sands <baldrick at free.fr>
To: llvmdev at cs.uiuc.edu
Cc: RAAD B <raad_7007 at yahoo.com>
Sent: Friday, March 13, 2009 2:46:48 PM
Subject: Re: [LLVMdev] store the LLVM-bitcode from a pass

Hi, take a look inside the file new_prog.bc.  How does
it start?

Ciao,

Duncan.



      
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