diff options
Diffstat (limited to 'gcc/flow.c')
| -rw-r--r-- | gcc/flow.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/flow.c b/gcc/flow.c index d7467e5bb1e..a5aa1fb133f 100644 --- a/gcc/flow.c +++ b/gcc/flow.c @@ -177,7 +177,7 @@ int *reg_basic_block; int *reg_n_refs; -/* Indexed by N; says whether a psuedo register N was ever used +/* Indexed by N; says whether a pseudo register N was ever used within a SUBREG that changes the size of the reg. Some machines prohibit such objects to be in certain (usually floating-point) registers. */ @@ -727,14 +727,14 @@ find_basic_blocks (f, nonlocal_label_list) } } - /* There are pathalogical cases where one function calling hundreds of + /* There are pathological cases where one function calling hundreds of nested inline functions can generate lots and lots of unreachable blocks that jump can't delete. Since we don't use sparse matrices a lot of memory will be needed to compile such functions. Implementing sparse matrices is a fair bit of work and it is not clear that they win more than they lose (we don't want to unnecessarily slow down compilation of normal code). By making - another pass for the pathalogical case, we can greatly speed up + another pass for the pathological case, we can greatly speed up their compilation without hurting normal code. This works because all the insns in the unreachable blocks have either been deleted or turned into notes. |