r183817 - in /branches/google/gcc-4_6/gcc: Chan...

[eraman@gcc.gnu.org]

Author: eraman
Date: Wed Feb  1 23:26:38 2012
New Revision: 183817

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183817
Log:
2012-02-01  Easwaran Raman  <eraman@google.com>

	* expr.c (do_tablejump): Add default_probability as the
	sixth parameter and use it to generate REG_BR_PROB note.
	(try_tablejump): Add default_probability as a parameter.
	* cfgbuild.c (non_zero_profile_counts): New function.
	(compute_outgoing_frequencies): If edges have profile counts
	set, don't replace them with guessed values.
	* expr.h (try_tablejump): Add additional parameter to the
	declaration.
	* stmt.c (tree-flow.h): Include.
	(case_node): Add new fields count and subtree_count.
	(add_case_node): Pass count as a paramater and initialize
	count field of case_node.
	(case_probability): New macro.
	(expand_case): Propagate profile information from the tree
	level to RTL during switch case expansion.
	(balance_case_nodes): Compute subtree_count for case nodes.
	(emit_case_nodes): Set branch probabilities for generated
	branches.

testsuite/ChengeLog.google-4_6:

2012-02-01  Easwaran Raman  <eraman@google.com>

	* tree-prof/switch-case-1.c: New test.
	* tree-prof/switch-case-2.c: New test.


Added:
    branches/google/gcc-4_6/gcc/testsuite/gcc.dg/tree-prof/switch-case-1.c
    branches/google/gcc-4_6/gcc/testsuite/gcc.dg/tree-prof/switch-case-2.c
Modified:
    branches/google/gcc-4_6/gcc/ChangeLog.google-4_6
    branches/google/gcc-4_6/gcc/cfgbuild.c
    branches/google/gcc-4_6/gcc/expr.c
    branches/google/gcc-4_6/gcc/expr.h
    branches/google/gcc-4_6/gcc/stmt.c
    branches/google/gcc-4_6/gcc/testsuite/ChangeLog.google-4_6