[PATCH 1/4] Make coverage_compute_cfg_checksum callable with an argument

[Martin Liška]

Hello,
  this is a small patchset that prepares API for new IPA Identical code folding 
pass. The patch adds an argument for coverage_compute_cfg_checksum.
Bootstrapped and tested on x86_64-linux.
OK for trunk?

Thanks,
Martin

2014-05-29  Martin Liska  <mli...@suse.cz>

        * coverage.h (coverage_compute_cfg_checksum): Argument added.
        * coverage.c (coverage_compute_cfg_checksum): Likewise.
        * profile.c (branch_prob): Likewise.

diff --git a/gcc/coverage.c b/gcc/coverage.c
index 5e9005e..9d81387 100644
--- a/gcc/coverage.c
+++ b/gcc/coverage.c
@@ -594,12 +594,12 @@ coverage_compute_profile_id (struct cgraph_node *n)
    but the compiler won't detect the change and use the wrong profile data.  */
 
 unsigned
-coverage_compute_cfg_checksum (void)
+coverage_compute_cfg_checksum (struct function *fn)
 {
   basic_block bb;
-  unsigned chksum = n_basic_blocks_for_fn (cfun);
+  unsigned chksum = n_basic_blocks_for_fn (fn);
 
-  FOR_EACH_BB_FN (bb, cfun)
+  FOR_EACH_BB_FN (bb, fn)
     {
       edge e;
       edge_iterator ei;
diff --git a/gcc/coverage.h b/gcc/coverage.h
index 81f87a6..392080c 100644
--- a/gcc/coverage.h
+++ b/gcc/coverage.h
@@ -32,8 +32,8 @@ extern int coverage_begin_function (unsigned, unsigned);
 /* Complete the coverage information for the current function.  */
 extern void coverage_end_function (unsigned, unsigned);
 
-/* Compute the control flow checksum for the current function.  */
-extern unsigned coverage_compute_cfg_checksum (void);
+/* Compute the control flow checksum for the FUNCTION given as argument.  */
+extern unsigned coverage_compute_cfg_checksum (struct function *);
 
 /* Compute the profile id of function N.  */
 extern unsigned coverage_compute_profile_id (struct cgraph_node *n);
diff --git a/gcc/profile.c b/gcc/profile.c
index 3282ee7..4e82eab 100644
--- a/gcc/profile.c
+++ b/gcc/profile.c
@@ -1195,7 +1195,7 @@ branch_prob (void)
      the checksum in only once place, since it depends on the shape
      of the control flow which can change during
      various transformations.  */
-  cfg_checksum = coverage_compute_cfg_checksum ();
+  cfg_checksum = coverage_compute_cfg_checksum (cfun);
   lineno_checksum = coverage_compute_lineno_checksum ();
 
   /* Write the data from which gcov can reconstruct the basic block
--
1.8.4.5