PR rtl-optimization/42216

	* regrename.c (create_new_chain): New function, broken out from...
	(scan_rtx_reg): ... here.  Call it.  Handle the case where we are
	appending a use to an empty chain.
	(build_def_use): Remove previous changes that convert OP_INOUT to
	OP_OUT operands; instead detect the case where an OP_INOUT operand
	uses a previously untracked register and create an empty chain for
	it.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@157511 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index dc484d0..35f813d 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,14 @@
+2010-03-17  Bernd Schmidt  <bernd.schmidt@analog.com>
+
+       PR rtl-optimization/42216
+       * regrename.c (create_new_chain): New function, broken out from...
+       (scan_rtx_reg): ... here.  Call it.  Handle the case where we are
+       appending a use to an empty chain.
+       (build_def_use): Remove previous changes that convert OP_INOUT to
+       OP_OUT operands; instead detect the case where an OP_INOUT operand
+       uses a previously untracked register and create an empty chain for
+       it.
+
 2010-03-17  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>
 
        * doc/extend.texi (Function Attributes): Rewrite unfinished