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| author | Dennis, CHENG Renquan <crquan@fedoraproject.org> | 2011-04-18 21:28:05 +0000 |
|---|---|---|
| committer | Gerald Pfeifer <gerald@gcc.gnu.org> | 2011-04-18 21:28:05 +0000 |
| commit | 474e8e70a6a64862810d906161d1f5919ebd5f29 (patch) | |
| tree | aadf764e853213c0e4c143477b1b248a5b06a0db /gcc/doc | |
| parent | 2cd815e756fb9a52985773874d52404169ce8c6c (diff) | |
| download | gcc-474e8e70a6a64862810d906161d1f5919ebd5f29.zip gcc-474e8e70a6a64862810d906161d1f5919ebd5f29.tar.gz gcc-474e8e70a6a64862810d906161d1f5919ebd5f29.tar.bz2 | |
* doc/passes.texi: Fill crossref nodes.
From-SVN: r172672
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/passes.texi | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/gcc/doc/passes.texi b/gcc/doc/passes.texi index 7453821..e5ee8c3 100644 --- a/gcc/doc/passes.texi +++ b/gcc/doc/passes.texi @@ -1,4 +1,4 @@ -@c markers: CROSSREF BUG TODO +@c markers: BUG TODO @c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, @c 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 @@ -32,7 +32,7 @@ where near complete. The language front end is invoked only once, via @code{lang_hooks.parse_file}, to parse the entire input. The language front end may use any intermediate language representation deemed -appropriate. The C front end uses GENERIC trees (CROSSREF), plus +appropriate. The C front end uses GENERIC trees (@pxref{GENERIC}), plus a double handful of language specific tree codes defined in @file{c-common.def}. The Fortran front end uses a completely different private representation. @@ -46,10 +46,9 @@ private representation. At some point the front end must translate the representation used in the front end to a representation understood by the language-independent portions of the compiler. Current practice takes one of two forms. -The C front end manually invokes the gimplifier (CROSSREF) on each function, +The C front end manually invokes the gimplifier (@pxref{GIMPLE}) on each function, and uses the gimplifier callbacks to convert the language-specific tree -nodes directly to GIMPLE (CROSSREF) before passing the function off to -be compiled. +nodes directly to GIMPLE before passing the function off to be compiled. The Fortran front end converts from a private representation to GENERIC, which is later lowered to GIMPLE when the function is compiled. Which route to choose probably depends on how well GENERIC (plus extensions) @@ -111,11 +110,10 @@ definitions immediately or queue them for later processing. @cindex GIMPLE @dfn{Gimplification} is a whimsical term for the process of converting the intermediate representation of a function into the GIMPLE language -(CROSSREF). The term stuck, and so words like ``gimplification'', +(@pxref{GIMPLE}). The term stuck, and so words like ``gimplification'', ``gimplify'', ``gimplifier'' and the like are sprinkled throughout this section of code. -@cindex GENERIC While a front end may certainly choose to generate GIMPLE directly if it chooses, this can be a moderately complex process unless the intermediate language used by the front end is already fairly simple. |