diff options
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/rtl.texi | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/gcc/doc/rtl.texi b/gcc/doc/rtl.texi index 1d62223..84c0444 100644 --- a/gcc/doc/rtl.texi +++ b/gcc/doc/rtl.texi @@ -3732,8 +3732,8 @@ Def-use and use-def chains are now preferred. @findex REG_NOTES @item REG_NOTES (@var{i}) -A list (chain of @code{expr_list} and @code{insn_list} expressions) -giving miscellaneous information about the insn. It is often +A list (chain of @code{expr_list}, @code{insn_list} and @code{int_list} +expressions) giving miscellaneous information about the insn. It is often information pertaining to the registers used in this insn. @end table @@ -3752,10 +3752,10 @@ analysis pass adds a link to insns which store into registers values that are used for the first time in this insn. The @code{REG_NOTES} field of an insn is a chain similar to the -@code{LOG_LINKS} field but it includes @code{expr_list} expressions in -addition to @code{insn_list} expressions. There are several kinds of -register notes, which are distinguished by the machine mode, which in a -register note is really understood as being an @code{enum reg_note}. +@code{LOG_LINKS} field but it includes @code{expr_list} and @code{int_list} +expressions in addition to @code{insn_list} expressions. There are several +kinds of register notes, which are distinguished by the machine mode, which +in a register note is really understood as being an @code{enum reg_note}. The first operand @var{op} of the note is data whose meaning depends on the kind of note. @@ -3956,16 +3956,16 @@ This indicates an anti dependence (a write after read dependence). @end table These notes describe information gathered from gcov profile data. They -are stored in the @code{REG_NOTES} field of an insn as an -@code{expr_list}. +are stored in the @code{REG_NOTES} field of an insn. @table @code @findex REG_BR_PROB @item REG_BR_PROB This is used to specify the ratio of branches to non-branches of a -branch insn according to the profile data. The value is stored as a -value between 0 and REG_BR_PROB_BASE; larger values indicate a higher -probability that the branch will be taken. +branch insn according to the profile data. The note is represented +as an @code{int_list} expression whose integer value is between 0 and +REG_BR_PROB_BASE. Larger values indicate a higher probability that +the branch will be taken. @findex REG_BR_PRED @item REG_BR_PRED |