From c376c05b38ddd5763372e1946f4705ec2437391a Mon Sep 17 00:00:00 2001 From: Tom Wood Date: Tue, 25 Aug 1992 20:21:53 +0000 Subject: [PATCH] (LINK_COST_ZERO, LINK_COST_FREE): New macros. From-SVN: r1949 --- gcc/rtl.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/gcc/rtl.h b/gcc/rtl.h index 7c7edbe59c3..7f2bee91389 100644 --- a/gcc/rtl.h +++ b/gcc/rtl.h @@ -481,6 +481,16 @@ extern char *note_insn_name[]; with the preceding insn. */ #define SCHED_GROUP_P(INSN) ((INSN)->in_struct) +/* During sched, for the LOG_LINKS of an insn, these cache the adjusted + cost of the dependence link. The cost of executing an instruction + may vary based on how the results are used. LINK_COST_ZERO is 1 when + the cost through the link varies and is unchanged (i.e., the link has + zero additional cost). LINK_COST_FREE is 1 when the cost through the + link is zero (i.e., the link makes the cost free). In other cases, + the adjustment to the cost is recomputed each time it is needed. */ +#define LINK_COST_ZERO(X) ((X)->jump) +#define LINK_COST_FREE(X) ((X)->call) + /* For a SET rtx, SET_DEST is the place that is set and SET_SRC is the value it is set to. */ #define SET_DEST(RTX) ((RTX)->fld[0].rtx) -- 2.30.2