f8719680bf
The isolate-paths pass is activated by various -f flags, but also by -Wnull-dereference. Most of its codegen changes are conditioned on at least one of the -f flags, but those that detect, warn about and isolate paths that return the address of local variables are enabled even if the pass is activated only by -Wnull-dereference. -W flags should not cause codegen changes, so this patch makes the codegen changes conditional on the presence of any of the -f flags that activate the pass. Should we have a separate option to activate only this kind of transformation? for gcc/ChangeLog * gimple-ssa-isolate-paths.c (find_implicit_erroneous_behavior): Do not change code if the pass is running for warnings only. (find_explicit_erroneous_behavior): Likewise. From-SVN: r265473
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