diff options
Diffstat (limited to 'gcc/loop.h')
| -rw-r--r-- | gcc/loop.h | 30 |
1 files changed, 22 insertions, 8 deletions
@@ -158,6 +158,22 @@ struct iv_class { struct loop_info { + /* Loop number. */ + int num; + /* Loops enclosed by this loop including itself. */ + int loops_enclosed; + /* Nonzero if there is a subroutine call in the current loop. */ + int has_call; + /* Nonzero if there is a volatile memory reference in the current + loop. */ + int has_volatile; + /* Nonzero if there is a tablejump in the current loop. */ + int has_tablejump; + /* Nonzero if there are ways to leave the loop other than falling + off the end. */ + int has_multiple_exit_targets; + /* Nonzero if there is an indirect jump in the current function. */ + int has_indirect_jump; /* Register or constant initial loop value. */ rtx initial_value; /* Register or constant value used for comparison test. */ @@ -181,15 +197,13 @@ struct loop_info wider iterator, this number will be zero if the number of loop iterations is too large for an unsigned integer to hold. */ unsigned HOST_WIDE_INT n_iterations; - /* The loop unrolling factor. - Potential values: - 0: unrolled - 1: not unrolled. - -1: completely unrolled - >0: holds the unroll exact factor. */ + /* The number of times the loop body was unrolled. */ unsigned int unroll_number; /* Non-zero if the loop has a NOTE_INSN_LOOP_VTOP. */ rtx vtop; + /* Non-zero if the loop has a NOTE_INSN_LOOP_CONT. + A continue statement will generate a branch to NEXT_INSN (cont). */ + rtx cont; }; /* Definitions used by the basic induction variable discovery code. */ @@ -240,10 +254,10 @@ rtx final_giv_value PROTO((struct induction *, rtx, rtx, unsigned HOST_WIDE_INT)); void emit_unrolled_add PROTO((rtx, rtx, rtx)); int back_branch_in_range_p PROTO((rtx, rtx, rtx)); -int loop_insn_first_p PROTO((rtx, rtx)); -extern int *loop_unroll_number; +int loop_insn_first_p PROTO((rtx, rtx)); /* Forward declarations for non-static functions declared in stmt.c. */ void find_loop_tree_blocks PROTO((void)); void unroll_block_trees PROTO((void)); + |