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authornickc <nickc@138bc75d-0d04-0410-961f-82ee72b054a4>1998-12-14 14:13:26 +0000
committernickc <nickc@138bc75d-0d04-0410-961f-82ee72b054a4>1998-12-14 14:13:26 +0000
commit881c3cf0ff288ee444b6492a9bdb5be77363796a (patch)
treeb687af6807e7c2e99daf07c4d951b8b5349213fb /gcc/rtl.texi
parenta918f0ded0a4aa76d0b0d5e00f1688ffd9ce09da (diff)
downloadgcc-881c3cf0ff288ee444b6492a9bdb5be77363796a.tar.gz
Delete REG_RETVAL and REG_LIBCALL notes after completeing reload
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@24310 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/rtl.texi')
-rw-r--r--gcc/rtl.texi6
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/rtl.texi b/gcc/rtl.texi
index 2e8e69a5de1..ef768af40f3 100644
--- a/gcc/rtl.texi
+++ b/gcc/rtl.texi
@@ -2664,11 +2664,17 @@ delete such sequences whose results are dead.
A @code{REG_EQUAL} note will also usually be attached to this insn to
provide the expression being computed by the sequence.
+These notes will be deleted after reload, since they are no longer
+accurate or useful.
+
@findex REG_LIBCALL
@item REG_LIBCALL
This is the inverse of @code{REG_RETVAL}: it is placed on the first
insn of a multi-insn sequence, and it points to the last one.
+These notes are deleted after reload, since they are no longer useful or
+accurate.
+
@findex REG_CC_SETTER
@findex REG_CC_USER
@item REG_CC_SETTER