[LLVMdev] argpromotion not working
eli.friedman at gmail.com
Fri Jun 18 14:01:19 PDT 2010
On Fri, Jun 18, 2010 at 1:21 PM, Arvind Sudarsanam
<A.Sudarsanam at cputech.com> wrote:
> Hi all,
> I have the following C code.
> static int addp(int *c, int a,int b)
> int x = *c + a + b;
> I want to replace *c with a scalar. So I tried the -argpromotion pass.
> However, it fails to do anything to the resulting llvm file.
I assume this isn't the complete file.
> List of commands:
> clang add.c -c -o add.bc
> clang add.c -S -o add.ll
> opt -argpromotion -stats add.bc -o add_a.bc
> llvm-dis < add_a.bc > add_a.ll
argpromotion won't work without running mem2reg first for normal clang output.
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