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| -rw-r--r-- | gcc/doc/generic.texi | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/doc/generic.texi b/gcc/doc/generic.texi index f54e791ab4d..534018e289a 100644 --- a/gcc/doc/generic.texi +++ b/gcc/doc/generic.texi @@ -1022,13 +1022,15 @@ As this example indicates, the operands are zero-indexed. @node Constant expressions @subsection Constant expressions @tindex INTEGER_CST -@findex TREE_INT_CST_LOW @findex tree_int_cst_lt @findex tree_int_cst_equal @tindex tree_fits_uhwi_p @tindex tree_fits_shwi_p @tindex tree_to_uhwi @tindex tree_to_shwi +@tindex TREE_INT_CST_NUNITS +@tindex TREE_INT_CST_ELT +@tindex TREE_INT_CST_LOW @tindex REAL_CST @tindex FIXED_CST @tindex COMPLEX_CST @@ -1049,7 +1051,10 @@ constants is obtained with @code{TREE_TYPE}; they are not always of type @code{INTEGER_CST} nodes. The value of the integer constant @code{e} is represented in an array of HOST_WIDE_INT. There are enough elements in the array to represent the value without taking extra elements for -redundant 0s or -1. +redundant 0s or -1. The number of elements used to represent @code{e} +is available via @code{TREE_INT_CST_NUNITS}. Element @code{i} can be +extracted by using @code{TREE_INT_CST_ELT (e, i)}. +@code{TREE_INT_CST_LOW} is a shorthand for @code{TREE_INT_CST_ELT (e, 0)}. The functions @code{tree_fits_shwi_p} and @code{tree_fits_uhwi_p} can be used to tell if the value is small enough to fit in a |