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rtl.h (enum reg_note): Add REG_BR_PROB and REG_EXEC_COUNT.

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* rtl.h (enum reg_note): Add REG_BR_PROB and REG_EXEC_COUNT.
	(REG_BR_PROB_BASE): Define.
	(NOTE_REPEATED_LINE_NUMBER): Define.

From-SVN: r13820
This commit is contained in:
Doug Evans 1997-03-28 22:39:00 +00:00
parent a6c383b0d8
commit 7ae21caf59
1 changed files with 15 additions and 1 deletions
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16
gcc/rtl.h
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@ -301,6 +301,13 @@ typedef struct rtvec_def{
dependencies. REG_DEP_OUTPUT is used in LOG_LINKS which represent output
(write after write) dependencies. Data dependencies, which are the only
type of LOG_LINK created by flow, are represented by a 0 reg note kind. */
/* REG_BR_PROB is attached to JUMP_INSNs and CALL_INSNs when the flag
-fbranch-probabilities is given. It has an integer value. For jumps,
it is the probability that this is a taken branch. For calls, it is the
probability that this call won't return.
REG_EXEC_COUNT is attached to the first insn of each basic block, and
the first insn after each CALL_INSN. It indicates how many times this
block was executed. */
#define REG_NOTES(INSN) ((INSN)->fld[6].rtx)
@ -309,7 +316,10 @@ enum reg_note { REG_DEAD = 1, REG_INC = 2, REG_EQUIV = 3, REG_WAS_0 = 4,
REG_EQUAL = 5, REG_RETVAL = 6, REG_LIBCALL = 7,
REG_NONNEG = 8, REG_NO_CONFLICT = 9, REG_UNUSED = 10,
REG_CC_SETTER = 11, REG_CC_USER = 12, REG_LABEL = 13,
REG_DEP_ANTI = 14, REG_DEP_OUTPUT = 15 };
REG_DEP_ANTI = 14, REG_DEP_OUTPUT = 15, REG_BR_PROB = 16,
REG_EXEC_COUNT = 17 };
/* The base value for branch probability notes. */
#define REG_BR_PROB_BASE 10000
/* Define macros to extract and insert the reg-note kind in an EXPR_LIST. */
#define REG_NOTE_KIND(LINK) ((enum reg_note) GET_MODE (LINK))
@ -394,6 +404,10 @@ extern char *reg_note_name[];
/* These note where exception handling regions begin and end. */
#define NOTE_INSN_EH_REGION_BEG -14
#define NOTE_INSN_EH_REGION_END -15
/* Generated whenever a duplicate line number note is output. For example,
one is output after the end of an inline function, in order to prevent
the line containing the inline call from being counted twice in gcov. */
#define NOTE_REPEATED_LINE_NUMBER -16
#if 0 /* These are not used, and I don't know what they were for. --rms. */