diff options
Diffstat (limited to 'gcc/toplev.c')
| -rw-r--r-- | gcc/toplev.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/toplev.c b/gcc/toplev.c index f6c4a63d186..43be973bcbe 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -616,6 +616,17 @@ int flag_check_memory_usage = 0; -fcheck-memory-usage. */ int flag_prefix_function_name = 0; +/* 1 if alias checking is on (by default, when -O). */ +int flag_alias_check = 0; + +/* 0 if pointer arguments may alias each other. True in C. + 1 if pointer arguments may not alias each other but may alias + global variables. + 2 if pointer arguments may not alias each other and may not + alias global variables. True in Fortran. + This defaults to 0 for C. */ +int flag_argument_noalias = 0; + /* Table of language-independent -f options. STRING is the option name. VARIABLE is the address of the variable. ON_VALUE is the value to store in VARIABLE @@ -672,6 +683,10 @@ struct { char *string; int *variable; int on_value;} f_options[] = {"pack-struct", &flag_pack_struct, 1}, {"stack-check", &flag_stack_check, 1}, {"bytecode", &output_bytecode, 1}, + {"alias-check", &flag_alias_check, 1}, + {"argument-alias", &flag_argument_noalias, 0}, + {"argument-noalias", &flag_argument_noalias, 1}, + {"argument-noalias-global", &flag_argument_noalias, 2}, {"check-memory-usage", &flag_check_memory_usage, 1}, {"prefix-function-name", &flag_prefix_function_name, 1} }; @@ -3672,6 +3687,7 @@ main (argc, argv, envp) #ifdef CAN_DEBUG_WITHOUT_FP flag_omit_frame_pointer = 1; #endif + flag_alias_check = 1; } if (optimize >= 2) |