From: Daniel Berlin <[EMAIL PROTECTED]>
To: sean yang <[EMAIL PROTECTED]>
CC: gcc@gcc.gnu.org
Subject: Re: adding nodes in a tree --after GIMPLIFICATION, before SSA
Date: Wed, 19 Apr 2006 22:38:11 -0700
In fact, there are only *two* places a call can occur in GIMPLE at that
point: bare, or the RHS of a MODIFY_EXPR.
The following code will give you *all* the CALL_EXPR statements in a
function.
block_stmt_iterator bsi;
basic_block bb;
FOR_EACH_BB (bb)
{
for (bsi = bsi_start (bb); !bsi_end_p (bsi); bsi_next (&bsi))
{
tree stmt = bsi_stmt (bsi);
if (TREE_CODE (stmt) == CALL_EXPR
|| (TREE_CODE (stmt) == MODIFY_EXPR && TREE_CODE (TREE_OPERAND
(stmt, 1) == CALL_EXPR))
{
/* Do your thing, make sure to use BSI_SAME flags so that
iteration will move properly. */
}
}
}
How can we get the rule of name mangling in GCC frontend?
For example, the sysbol name for foo in C is still "foo", but the sysmbol
name for foo in C++ (output of g++) is something like "_Z3foov". Futhermore,
symbol name foo in fortran is "_foo".
If I want to instrument mpi calls in a program, the three languages synopsis
(c, c++, fortran) are different.
e.g. mpi_bsend has three interface:
C++: void MPI::Comm::Bsend; C: MPI_Bsend; Fortran: MPI_BSEND
I want to insert the instrumentation code no matter from what language the
MPI subroutines are called.
I think I can take care of C and Fortran by the following (psuedo) code, but
how can i find the rule for c++ name mangling? are there many cases that I
need take care of?
if (TREE_CODE ( t ) == FUNCTION_DECL){
if (( !strncmp (IDENTIFIER_POINTER(DECL_NAME (t) , "mpi_", 4) || (
!strncmp (IDENTIFIER_POINTER(DECL_NAME (t) , "_mpi_", 5)) {
//(1) handles case of C language; (2) handle the case of Fortran
}
}
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