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Diffstat (limited to 'gcc/doc/rtl.texi')
| -rw-r--r-- | gcc/doc/rtl.texi | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/doc/rtl.texi b/gcc/doc/rtl.texi index 2d4644d5873..0498062786f 100644 --- a/gcc/doc/rtl.texi +++ b/gcc/doc/rtl.texi @@ -1774,6 +1774,19 @@ is always @code{Pmode}. If there are any @code{addressof} expressions left in the function after CSE, @var{reg} is forced into the stack and the @code{addressof} expression is replaced with a @code{plus} expression for the address of its stack slot. + +@findex concat +@item (concat@var{m} @var{rtx} @var{rtx}) +This RTX represents the concatenation of two other RTXs. This is used +for complex values. It should only appear in the RTL attached to +declarations and during RTL generation. It should not appear in the +ordinary insn chain. + +@findex concatn +@item (concatn@var{m} [@var{rtx} ...]) +This RTX represents the concatenation of all the @var{rtx} to make a +single value. Like @code{concat}, this should only appear in +declarations, and not in the insn chain. @end table @node Arithmetic |