diff options
Diffstat (limited to 'gcc/rtl.h')
| -rw-r--r-- | gcc/rtl.h | 35 |
1 files changed, 8 insertions, 27 deletions
diff --git a/gcc/rtl.h b/gcc/rtl.h index f8ca1c3e2f8..2ff874bd7a3 100644 --- a/gcc/rtl.h +++ b/gcc/rtl.h @@ -220,16 +220,11 @@ struct rtx_def GTY((chain_next ("RTX_NEXT (&%h)"), promoted mode. 1 in a CODE_LABEL if the label is used for nonlocal gotos and must not be deleted even if its count is zero. - 1 in a LABEL_REF if this is a reference to a label outside the - current loop. 1 in an INSN, JUMP_INSN or CALL_INSN if this insn must be scheduled together with the preceding insn. Valid only within sched. 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and from the target of a branch. Valid from reorg until end of compilation; - cleared before used. - 1 in an INSN, JUMP_INSN or CALL_INSN or related rtx if this insn is - dead code. Valid only during dead-code elimination phase; cleared - before use. */ + cleared before used. */ unsigned int in_struct : 1; /* At the end of RTL generation, 1 if this rtx is used. This is used for copying shared structure. See `unshare_all_rtl'. @@ -642,7 +637,6 @@ do { \ #define XCBITMAP(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bit) #define XCTREE(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_tree) #define XCBBDEF(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_bb) -#define XCADVFLAGS(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_addr_diff_vec_flags) #define XCCSELIB(RTX, N, C) (RTL_CHECKC1 (RTX, N, C).rt_cselib) #define XCVECEXP(RTX, N, M, C) RTVEC_ELT (XCVEC (RTX, N, C), M) @@ -698,11 +692,6 @@ do { \ #define INSN_ANNULLED_BRANCH_P(RTX) \ (RTL_FLAG_CHECK3("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN, CALL_INSN, INSN)->unchanging) -/* 1 if RTX is an insn that is dead code. Valid only for dead-code - elimination phase. */ -#define INSN_DEAD_CODE_P(RTX) \ - (RTL_FLAG_CHECK3("INSN_DEAD_CODE_P", (RTX), INSN, CALL_INSN, JUMP_INSN)->in_struct) - /* 1 if RTX is an insn in a delay slot and is from the target of the branch. If the branch insn has INSN_ANNULLED_BRANCH_P set, this insn should only be executed if the branch is taken. For annulled branches with this bit @@ -710,8 +699,12 @@ do { \ #define INSN_FROM_TARGET_P(RTX) \ (RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct) +/* In an ADDR_DIFF_VEC, the flags for RTX for use by branch shortening. + See the comments for ADDR_DIFF_VEC in rtl.def. */ #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4) +/* In a VALUE, the value cselib has assigned to RTX. + This is a "struct cselib_val_struct", see cselib.h. */ #define CSELIB_VAL_PTR(RTX) X0CSELIB(RTX, 0) /* Holds a list of notes on what this insn does to various REGs. @@ -719,7 +712,6 @@ do { \ chain pointer and the first operand is the REG being described. The mode field of the EXPR_LIST contains not a real machine mode but a value from enum reg_note. */ - #define REG_NOTES(INSN) XEXP(INSN, 8) enum reg_note @@ -757,8 +749,6 @@ extern const char * const reg_note_name[]; Label numbers are unique in a compilation. */ #define CODE_LABEL_NUMBER(INSN) XINT (INSN, 6) -#define LINE_NUMBER NOTE - /* In a NOTE that is a line number, this is a string for the file name that the line is in. We use the same field to record block numbers temporarily in NOTE_INSN_BLOCK_BEG and NOTE_INSN_BLOCK_END notes. (We avoid lots of casts @@ -908,15 +898,11 @@ enum label_kind /* This is the field in the LABEL_REF through which the circular chain of references to a particular label is linked. - This chain is set up in flow.c. */ - + FIXME: This chain is used in loop.c and in the SH backend. + Since loop.c is about to go away, it could be a win to replace + the uses of this in the SH backend with something else. */ #define LABEL_NEXTREF(REF) XCEXP (REF, 1, LABEL_REF) -/* Once basic blocks are found in flow.c, - Each LABEL_REF points to its containing instruction with this field. */ - -#define CONTAINING_INSN(RTX) XCEXP (RTX, 2, LABEL_REF) - /* For a REG rtx, REGNO extracts the register number. ORIGINAL_REGNO holds the number the register originally had; for a pseudo register turned into a hard reg this will hold the old pseudo register number. */ @@ -948,7 +934,6 @@ enum label_kind #define HARD_REGISTER_NUM_P(REG_NO) ((REG_NO) < FIRST_PSEUDO_REGISTER) /* For a CONST_INT rtx, INTVAL extracts the integer. */ - #define INTVAL(RTX) XCWINT(RTX, 0, CONST_INT) /* For a CONST_DOUBLE: @@ -1162,10 +1147,6 @@ do { \ #define LABEL_PRESERVE_P(RTX) \ (RTL_FLAG_CHECK2("LABEL_PRESERVE_P", (RTX), CODE_LABEL, NOTE)->in_struct) -/* 1 if RTX is a reg that is used only in an exit test of a loop. */ -#define REG_LOOP_TEST_P(RTX) \ - (RTL_FLAG_CHECK1("REG_LOOP_TEST_P", (RTX), REG)->in_struct) - /* During sched, 1 if RTX is an insn that must be scheduled together with the preceding insn. */ #define SCHED_GROUP_P(RTX) \ |