Hi, is there a opt pass that replaces the SSA virtual registers to stack-variables? I want to eliminate the SSA virtual register from my IR. Kindly suggest BR/Nizam -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20140201/bdc3909a/attachment.html>
Hi Ben,
That did help. I continue to notice the virtual register in the program. I use
LLVM 3.4. The program i am looking at is a very simple one. Listed below
int global_var;
int *global_ptr;
int32_t main(int32_t argc, char ** argv){
int p = 10;
int k = 20;
int *pp;
char *c_pp;
pp = &k;
global_ptr = pp;
pp = &p;
global_ptr = &global_var;
return 0;
}
BR/Nizam
From: "Benjamin Kramer" <benny.kra at gmail.com>
To: nizam at cse.iitm.ac.in
Cc: "llvmdev" <llvmdev at cs.uiuc.edu>
Sent: Saturday, February 1, 2014 9:57:00 PM
Subject: Re: [LLVMdev] Eliminate SSA Virtual registers
On 01.02.2014, at 16:47, nizam at cse.iitm.ac.in wrote:
> Hi,
>
> is there a opt pass that replaces the SSA virtual registers to
stack-variables? I want to eliminate the SSA virtual register from my IR. Kindly
suggest
Try the register to memory demotion pass. opt -reg2mem
- Ben
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On 01.02.2014, at 16:47, nizam at cse.iitm.ac.in wrote:> Hi, > > is there a opt pass that replaces the SSA virtual registers to stack-variables? I want to eliminate the SSA virtual register from my IR. Kindly suggestTry the register to memory demotion pass. opt -reg2mem - Ben
Here it is: http://llvm.org/docs/Passes.html#reg2mem-demote-all-values-to-stack-slots On Sat, Feb 1, 2014 at 7:47 PM, <nizam at cse.iitm.ac.in> wrote:> Hi, > > is there a opt pass that replaces the SSA virtual registers to > stack-variables? I want to eliminate the SSA virtual register from my IR. > Kindly suggest > > BR/Nizam > > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.edu http://llvm.cs.uiuc.edu > http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev >-- With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg State University