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rtl.texi (RTX_UNCHANGING_P): Point to true_dependence for details of conflict handling.

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* doc/rtl.texi (RTX_UNCHANGING_P): Point to true_dependence for
	details of conflict handling.

From-SVN: r65912
This commit is contained in:
Richard Kenner 2003-04-21 22:13:01 +00:00 committed by Richard Kenner
parent b6e59a3aed
commit 9e91ce11be
2 changed files with 10 additions and 5 deletions

5
gcc/ChangeLog

@ -69,7 +69,10 @@
* cpplib.h (struct cpp_callbacks): Change prototype of include.
2003-04-21 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
* doc/rtl.texi (RTX_UNCHANGING_P): Point to true_dependence for
details of conflict handling.
* fold-const.c (extract_muldiv, case CONVERT_EXPR): Detect case
when conversion overflows.

10
gcc/doc/rtl.texi

@ -723,10 +723,12 @@ Stored in the @code{integrated} field and printed as @samp{/i}.
@cindex @code{concat} and @samp{/u}
@cindex @code{unchanging}, in @code{reg} and @code{mem}
@item RTX_UNCHANGING_P (@var{x})
Nonzero in a @code{reg}, @code{mem}, or @code{concat} if the memory
is set at most once,
anywhere. This does not mean that it is function invariant.
Stored in the @code{unchanging} field and printed as @samp{/u}.
Nonzero in a @code{reg}, @code{mem}, or @code{concat} if the register or
memory is set at most once, anywhere. This does not mean that it is
function invariant. This flag is used to determine whether two
references conflict. See @code{tree_dependence} in @file{alias.c} for
more details. Stored in the @code{unchanging} field and printed as
@samp{/u}.
@findex SCHED_GROUP_P
@cindex @code{insn} and @samp{/s}