diff options
Diffstat (limited to 'gcc/doc/cfg.texi')
| -rw-r--r-- | gcc/doc/cfg.texi | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/doc/cfg.texi b/gcc/doc/cfg.texi index caf8c4f..ddd2251 100644 --- a/gcc/doc/cfg.texi +++ b/gcc/doc/cfg.texi @@ -364,7 +364,7 @@ accumulate into quite large errors. Each edge also contains a branch probability field: an integer in the range from 0 to @code{REG_BR_PROB_BASE}. It represents probability of passing control from the end of the @code{src} basic block to the -@code{dest} basic block, i.e. the probability that control will flow +@code{dest} basic block, i.e.@: the probability that control will flow along this edge. The @code{EDGE_FREQUENCY} macro is available to compute how frequently a given edge is taken. There is a @code{count} field for each edge as well, representing same information as for a @@ -533,7 +533,7 @@ the complete API required for manipulating and maintaining the CFG. It is also possible that a pass has to insert control flow instruction into the middle of a basic block, thus creating an entry point in the middle of the basic block, which is impossible by definition: The -block must be split to make sure it only has one entry point, i.e. the +block must be split to make sure it only has one entry point, i.e.@: the head of the basic block. In the RTL representation, the @code{find_sub_basic_blocks} may be used to split existing basic block and add necessary edges. The CFG hook @code{split_block} may be used @@ -570,7 +570,7 @@ RTL representation along with the function @code{tree} itself. @section Liveness information @cindex Liveness representation Liveness information is useful to determine whether some register is -``live'' at given point of program, i.e. that it contains a value that +``live'' at given point of program, i.e.@: that it contains a value that may be used at a later point in the program. This information is used, for instance, during register allocation, as the pseudo registers only need to be assigned to a unique hard register or to a |
