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| author | bje <bje@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-02-19 23:09:26 +0000 |
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| committer | bje <bje@138bc75d-0d04-0410-961f-82ee72b054a4> | 2006-02-19 23:09:26 +0000 |
| commit | 5f1f190665885b7dfc8c069e080b0331cd024565 (patch) | |
| tree | 49ba00a8b562fe93892d125035f4bf622b896353 | |
| parent | e207fd7ae6bbf4146f40cc68e841a2576695d7ca (diff) | |
| download | ppe42-gcc-5f1f190665885b7dfc8c069e080b0331cd024565.tar.gz ppe42-gcc-5f1f190665885b7dfc8c069e080b0331cd024565.zip | |
* doc/tree-ssa.texi (Interfaces): Describe low vs. high GIMPLE.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@111286 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/doc/tree-ssa.texi | 5 |
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diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 988eed4045a..afb2bbe9a43 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2006-02-20 Ben Elliston <bje@au.ibm.com> + + * doc/tree-ssa.texi (Interfaces): Describe low vs. high GIMPLE. + 2006-02-19 Roger Sayle <roger@eyesopen.com> Steven Bosscher <stevenb.gcc@gmail.com> diff --git a/gcc/doc/tree-ssa.texi b/gcc/doc/tree-ssa.texi index 77a2f0a01ab..ef2bb8ab8ca 100644 --- a/gcc/doc/tree-ssa.texi +++ b/gcc/doc/tree-ssa.texi @@ -132,6 +132,11 @@ convert the front end trees to GIMPLE@. Usually such a hook will involve much of the same code for expanding front end trees to RTL@. This function can return fully lowered GIMPLE, or it can return GENERIC trees and let the main gimplifier lower them the rest of the way; this is often simpler. +GIMPLE that is not fully lowered is known as ``high GIMPLE'' and +consists of the IL before the pass @code{pass_lower_cf}. High GIMPLE +still contains lexical scopes and nested expressions, while low GIMPLE +exposes all of the implicit jumps for control expressions like +@code{COND_EXPR}. The C and C++ front ends currently convert directly from front end trees to GIMPLE, and hand that off to the back end rather than first |
