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| author | Richard Henderson <rth@cygnus.com> | 1999-08-28 16:20:34 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 1999-08-28 16:20:34 -0700 |
| commit | 87373fba4acdc74aef92bbdbca1dde0675f0a781 (patch) | |
| tree | b79a49c95f326c98f2bcc5902e352779c3393c9a /gcc | |
| parent | 8e260ba4dbc6ffff9adb85b0cac1a0565a573f29 (diff) | |
| download | gcc-87373fba4acdc74aef92bbdbca1dde0675f0a781.zip gcc-87373fba4acdc74aef92bbdbca1dde0675f0a781.tar.gz gcc-87373fba4acdc74aef92bbdbca1dde0675f0a781.tar.bz2 | |
haifa-sched.c (sched_analyze): Clear LOG_LINKS before calling sched_analyze_insn.
* haifa-sched.c (sched_analyze): Clear LOG_LINKS before calling
sched_analyze_insn.
(sched_analyze_1): Let add_dependence care for not adding dups.
(sched_analyze_2): Likewise.
(add_branch_dependences): Likewise.
From-SVN: r28945
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/haifa-sched.c | 35 |
2 files changed, 24 insertions, 19 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 29cd896..89de67f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +Sat Aug 28 16:20:12 1999 Richard Henderson <rth@cygnus.com> + + * haifa-sched.c (sched_analyze): Clear LOG_LINKS before calling + sched_analyze_insn. + (sched_analyze_1): Let add_dependence care for not adding dups. + (sched_analyze_2): Likewise. + (add_branch_dependences): Likewise. + Sat Aug 28 15:58:16 1999 Mumit Khan <khan@xraylith.wisc.edu> * i386/winnt.c (export_list): New type. diff --git a/gcc/haifa-sched.c b/gcc/haifa-sched.c index 42f44b7..43dc953 100644 --- a/gcc/haifa-sched.c +++ b/gcc/haifa-sched.c @@ -3371,10 +3371,8 @@ sched_analyze_1 (x, insn) pending_mem = pending_read_mems; while (pending) { - /* If a dependency already exists, don't create a new one. */ - if (!find_insn_list (XEXP (pending, 0), LOG_LINKS (insn))) - if (anti_dependence (XEXP (pending_mem, 0), dest)) - add_dependence (insn, XEXP (pending, 0), REG_DEP_ANTI); + if (anti_dependence (XEXP (pending_mem, 0), dest)) + add_dependence (insn, XEXP (pending, 0), REG_DEP_ANTI); pending = XEXP (pending, 1); pending_mem = XEXP (pending_mem, 1); @@ -3384,10 +3382,8 @@ sched_analyze_1 (x, insn) pending_mem = pending_write_mems; while (pending) { - /* If a dependency already exists, don't create a new one. */ - if (!find_insn_list (XEXP (pending, 0), LOG_LINKS (insn))) - if (output_dependence (XEXP (pending_mem, 0), dest)) - add_dependence (insn, XEXP (pending, 0), REG_DEP_OUTPUT); + if (output_dependence (XEXP (pending_mem, 0), dest)) + add_dependence (insn, XEXP (pending, 0), REG_DEP_OUTPUT); pending = XEXP (pending, 1); pending_mem = XEXP (pending_mem, 1); @@ -3529,10 +3525,8 @@ sched_analyze_2 (x, insn) pending_mem = pending_read_mems; while (pending) { - /* If a dependency already exists, don't create a new one. */ - if (!find_insn_list (XEXP (pending, 0), LOG_LINKS (insn))) - if (read_dependence (XEXP (pending_mem, 0), x)) - add_dependence (insn, XEXP (pending, 0), REG_DEP_ANTI); + if (read_dependence (XEXP (pending_mem, 0), x)) + add_dependence (insn, XEXP (pending, 0), REG_DEP_ANTI); pending = XEXP (pending, 1); pending_mem = XEXP (pending_mem, 1); @@ -3542,11 +3536,9 @@ sched_analyze_2 (x, insn) pending_mem = pending_write_mems; while (pending) { - /* If a dependency already exists, don't create a new one. */ - if (!find_insn_list (XEXP (pending, 0), LOG_LINKS (insn))) - if (true_dependence (XEXP (pending_mem, 0), VOIDmode, - x, rtx_varies_p)) - add_dependence (insn, XEXP (pending, 0), 0); + if (true_dependence (XEXP (pending_mem, 0), VOIDmode, + x, rtx_varies_p)) + add_dependence (insn, XEXP (pending, 0), 0); pending = XEXP (pending, 1); pending_mem = XEXP (pending_mem, 1); @@ -3819,6 +3811,9 @@ sched_analyze (head, tail) { if (GET_CODE (insn) == INSN || GET_CODE (insn) == JUMP_INSN) { + /* Clear out the stale LOG_LINKS from flow. */ + free_INSN_LIST_list (&LOG_LINKS (insn)); + /* Make each JUMP_INSN a scheduling barrier for memory references. */ if (GET_CODE (insn) == JUMP_INSN) last_pending_memory_flush @@ -3833,6 +3828,9 @@ sched_analyze (head, tail) CANT_MOVE (insn) = 1; + /* Clear out the stale LOG_LINKS from flow. */ + free_INSN_LIST_list (&LOG_LINKS (insn)); + /* Any instruction using a hard register which may get clobbered by a call needs to be marked as dependent on this call. This prevents a use of a hard return reg from being moved @@ -7158,8 +7156,7 @@ add_branch_dependences (head, tail) if (INSN_REF_COUNT (insn) != 0) continue; - if (!find_insn_list (last, LOG_LINKS (insn))) - add_dependence (last, insn, REG_DEP_ANTI); + add_dependence (last, insn, REG_DEP_ANTI); INSN_REF_COUNT (insn) = 1; /* Skip over insns that are part of a group. */ |