diff options
Diffstat (limited to 'gcc/rtl.h')
| -rw-r--r-- | gcc/rtl.h | 24 |
1 files changed, 24 insertions, 0 deletions
@@ -479,6 +479,21 @@ class GTY(()) rtx_jump_table_data : public rtx_insn This is an instance of: DEF_RTL_EXPR(JUMP_TABLE_DATA, "jump_table_data", "uuBe0000", RTX_INSN) from rtl.def. */ + +public: + + /* This can be either: + + (a) a table of absolute jumps, in which case PATTERN (this) is an + ADDR_VEC with arg 0 a vector of labels, or + + (b) a table of relative jumps (e.g. for -fPIC), in which case + PATTERN (this) is an ADDR_DIFF_VEC, with arg 0 a LABEL_REF and + arg 1 the vector of labels. + + This method gets the underlying vec. */ + + inline rtvec get_labels () const; }; class GTY(()) rtx_barrier : public rtx_insn @@ -1207,6 +1222,15 @@ inline rtx& SET_NEXT_INSN (rtx insn) -1 means this instruction has not been recognized yet. */ #define INSN_CODE(INSN) XINT (INSN, 5) +inline rtvec rtx_jump_table_data::get_labels () const +{ + rtx pat = PATTERN (this); + if (GET_CODE (pat) == ADDR_VEC) + return XVEC (pat, 0); + else + return XVEC (pat, 1); /* presumably an ADDR_DIFF_VEC */ +} + #define RTX_FRAME_RELATED_P(RTX) \ (RTL_FLAG_CHECK6 ("RTX_FRAME_RELATED_P", (RTX), DEBUG_INSN, INSN, \ CALL_INSN, JUMP_INSN, BARRIER, SET)->frame_related) |