diff options
Diffstat (limited to 'gcc/tree-ssa-live.c')
| -rw-r--r-- | gcc/tree-ssa-live.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/gcc/tree-ssa-live.c b/gcc/tree-ssa-live.c index 8738fe21a6e..734d15df2c5 100644 --- a/gcc/tree-ssa-live.c +++ b/gcc/tree-ssa-live.c @@ -520,6 +520,11 @@ remove_unused_scope_block_p (tree scope, bool in_ctor_dtor_block) else if (!BLOCK_SUPERCONTEXT (scope) || TREE_CODE (BLOCK_SUPERCONTEXT (scope)) == FUNCTION_DECL) unused = false; + /* Preserve the block, it is referenced by at least the inline + entry point marker. */ + else if (debug_nonbind_markers_p + && inlined_function_outer_scope_p (scope)) + unused = false; /* Innermost blocks with no live variables nor statements can be always eliminated. */ else if (!nsubblocks) @@ -548,11 +553,13 @@ remove_unused_scope_block_p (tree scope, bool in_ctor_dtor_block) } else if (BLOCK_VARS (scope) || BLOCK_NUM_NONLOCALIZED_VARS (scope)) unused = false; - /* See if this block is important for representation of inlined function. - Inlined functions are always represented by block with - block_ultimate_origin being set to FUNCTION_DECL and DECL_SOURCE_LOCATION - set... */ - else if (inlined_function_outer_scope_p (scope)) + /* See if this block is important for representation of inlined + function. Inlined functions are always represented by block + with block_ultimate_origin being set to FUNCTION_DECL and + DECL_SOURCE_LOCATION set, unless they expand to nothing... But + see above for the case of statement frontiers. */ + else if (!debug_nonbind_markers_p + && inlined_function_outer_scope_p (scope)) unused = false; else /* Verfify that only blocks with source location set @@ -640,6 +647,16 @@ dump_scope_block (FILE *file, int indent, tree scope, dump_flags_t flags) fprintf (file, "#%i", BLOCK_NUMBER (origin)); } } + if (BLOCK_FRAGMENT_ORIGIN (scope)) + fprintf (file, " Fragment of : #%i", + BLOCK_NUMBER (BLOCK_FRAGMENT_ORIGIN (scope))); + else if (BLOCK_FRAGMENT_CHAIN (scope)) + { + fprintf (file, " Fragment chain :"); + for (t = BLOCK_FRAGMENT_CHAIN (scope); t ; + t = BLOCK_FRAGMENT_CHAIN (t)) + fprintf (file, " #%i", BLOCK_NUMBER (t)); + } fprintf (file, " \n"); for (var = BLOCK_VARS (scope); var; var = DECL_CHAIN (var)) { |