can become dead.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@73838
138bc75d-0d04-0410-961f-
82ee72b054a4
+2003-11-22 J"orn Rennecke <joern.rennecke@superh.com>
+
+ * flow.c (update_life_info): Amend comment about when a register
+ can become dead.
+
2003-11-21 Kelley Cook <kcook@gcc.gnu.org>
* doc/.cvsignore: Delete.
generates subregs of a multi-word pseudo, current life analysis will
lose the kill. So we _can_ have a pseudo go live. How irritating.
+ It is also not true when a peephole decides that it doesn't need one
+ or more of the inputs.
+
Including PROP_REG_INFO does not properly refresh regs_ever_live
unless the caller resets it to zero. */