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Diffstat (limited to 'gcc/doc/rtl.texi')
| -rw-r--r-- | gcc/doc/rtl.texi | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/gcc/doc/rtl.texi b/gcc/doc/rtl.texi index c9f7c875093..de4a8e7394f 100644 --- a/gcc/doc/rtl.texi +++ b/gcc/doc/rtl.texi @@ -501,11 +501,40 @@ See @code{TARGET_IN_SMALL_DATA_P}. This is a multi-bit field accessor that returns the @code{tls_model} to be used for a thread-local storage symbol. It returns zero for non-thread-local symbols. + +@findex SYMBOL_REF_IN_BLOCK_P +@findex SYMBOL_FLAG_IN_BLOCK +@item SYMBOL_FLAG_IN_BLOCK +Set if the symbol has been assigned to an @code{object_block} structure. +@code{SYMBOL_REF_BLOCK} and @code{SYMBOL_REF_BLOCK_OFFSET} provide more +information about such symbols. + +@findex SYMBOL_REF_ANCHOR_P +@findex SYMBOL_FLAG_ANCHOR +@cindex @option{-fsection-anchors} +@item SYMBOL_FLAG_ANCHOR +Set if the symbol is used as a section anchor. ``Section anchors'' +are symbols that have a known position within an @code{object_block} +and that can be used to access nearby members of that block. +They are used to implement @option{-fsection-anchors}. + +If this flag is set, then @code{SYMBOL_FLAG_IN_BLOCK} will be too. @end table Bits beginning with @code{SYMBOL_FLAG_MACH_DEP} are available for the target's use. @end table + +@findex SYMBOL_REF_BLOCK +@item SYMBOL_REF_BLOCK (@var{x}) +If @samp{SYMBOL_REF_IN_BLOCK_P (@var{x})}, this is the @samp{object_block} +structure to which the symbol belongs. The value is always nonnull. + +@findex SYMBOL_REF_BLOCK_OFFSET +@item SYMBOL_REF_BLOCK_OFFSET (@var{x}) +If @samp{SYMBOL_REF_IN_BLOCK_P (@var{x})}, this is the offset of @var{x} +from the first object in @samp{SYMBOL_REF_BLOCK (@var{x})}. The value is +negative if @var{x} has not yet been assigned an offset. @end table @node Flags |