diff options
Diffstat (limited to 'gcc/tree-ssa-dce.c')
| -rw-r--r-- | gcc/tree-ssa-dce.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/gcc/tree-ssa-dce.c b/gcc/tree-ssa-dce.c index 92c9e9b935a..f6e62dc9c7f 100644 --- a/gcc/tree-ssa-dce.c +++ b/gcc/tree-ssa-dce.c @@ -47,7 +47,6 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #include "system.h" #include "coretypes.h" #include "tm.h" -#include "errors.h" #include "ggc.h" /* These RTL headers are needed for basic-block.h. */ @@ -280,6 +279,15 @@ mark_stmt_if_obviously_necessary (tree stmt, bool aggressive) tree op, def; ssa_op_iter iter; + /* With non-call exceptions, we have to assume that all statements could + throw. If a statement may throw, it is inherently necessary. */ + if (flag_non_call_exceptions + && tree_could_throw_p (stmt)) + { + mark_stmt_necessary (stmt, true); + return; + } + /* Statements that are implicitly live. Most function calls, asm and return statements are required. Labels and BIND_EXPR nodes are kept because they are control flow, and we have no way of knowing whether they can be |