diff options
| author | Jeffrey A Law <law@cygnus.com> | 2000-03-17 14:40:45 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2000-03-17 14:40:45 -0800 |
| commit | 0a1c58a25ab5df1a3e4596024774641ebae8be2a (patch) | |
| tree | 720b4c50b7ea074422601de35cfc7e48ed679e49 /gcc/rtl.def | |
| parent | f1fd8077fd1260362aa134deefc197948da270f8 (diff) | |
| download | gcc-0a1c58a25ab5df1a3e4596024774641ebae8be2a.zip gcc-0a1c58a25ab5df1a3e4596024774641ebae8be2a.tar.gz gcc-0a1c58a25ab5df1a3e4596024774641ebae8be2a.tar.bz2 | |
Sibling call optimizations.
Co-Authored-By: Richard Henderson <rth@cygnus.com>
From-SVN: r32612
Diffstat (limited to 'gcc/rtl.def')
| -rw-r--r-- | gcc/rtl.def | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gcc/rtl.def b/gcc/rtl.def index ba68ca0..570abdc 100644 --- a/gcc/rtl.def +++ b/gcc/rtl.def @@ -1,7 +1,7 @@ /* This file contains the definitions and documentation for the Register Transfer Expressions (rtx's) that make up the Register Transfer Language (rtl) used in the Back End of the GNU compiler. - Copyright (C) 1987, 88, 92, 94, 95, 97, 98, 1999 + Copyright (C) 1987, 88, 92, 94, 95, 97, 98, 1999, 2000 Free Software Foundation, Inc. This file is part of GNU CC. @@ -880,7 +880,10 @@ DEF_RTL_EXPR(CONSTANT_P_RTX, "constant_p_rtx", "e", 'x') potential tail recursive calls were found. The tail recursion label is needed so that we can clear LABEL_PRESERVE_P - after we select a call method. */ + after we select a call method. + + This method of tail-call elimination is intended to be replaced by + tree-based optimizations once front-end conversions are complete. */ DEF_RTL_EXPR(CALL_PLACEHOLDER, "call_placeholder", "uuuu", 'x') /* The SSA phi operator. |