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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-04-07 09:24:45 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-04-07 09:24:45 +0000 |
| commit | 406034fa4b563e02d1570ec6d1457688c932536d (patch) | |
| tree | a36fbb677db9b9d77dd79d4991fb6f4bd8349ebc /gcc/haifa-sched.c | |
| parent | 40977116f1eefb8672a9403f109f73461963545f (diff) | |
| download | ppe42-gcc-406034fa4b563e02d1570ec6d1457688c932536d.tar.gz ppe42-gcc-406034fa4b563e02d1570ec6d1457688c932536d.zip | |
* rtl.def (COND_EXEC): New.
* rtl.h (COND_EXEC_TEST, COND_EXEC_CODE): New.
* tm.texi (MAX_CONDITIONAL_EXECUTE): Document.
* genconfig.c (have_cond_arith_flag): Remove.
(have_cond_exec_flag): New.
(walk_insn_part): Detect COND_EXEC, not arithmetic in IF_THEN_ELSE.
(main): Print HAVE_conditional_execution.
* haifa-sched.c (haifa_classify_insn): Recognize COND_EXEC.
(sched_analyze_insn, print_pattern): Likewise.
* reload.c (find_equiv_reg): Likewise.
* rtlanal.c (reg_referenced_p): Likewise.
(note_stores, dead_or_set_regno_p): Likewise.
(reg_overlap_mentioned_p): Rewrite to use a switch.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@32997 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/haifa-sched.c')
| -rw-r--r-- | gcc/haifa-sched.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/gcc/haifa-sched.c b/gcc/haifa-sched.c index eb6f121d0b7..36a4cc80522 100644 --- a/gcc/haifa-sched.c +++ b/gcc/haifa-sched.c @@ -2588,6 +2588,7 @@ haifa_classify_insn (insn) WORST_CLASS (tmp_class, may_trap_exp (SET_SRC (XVECEXP (pat, 0, i)), 0)); break; + case COND_EXEC: case TRAP_IF: tmp_class = TRAP_RISKY; break; @@ -2617,6 +2618,7 @@ haifa_classify_insn (insn) WORST_CLASS (tmp_class, may_trap_exp (SET_SRC (pat), 0)); break; + case COND_EXEC: case TRAP_IF: tmp_class = TRAP_RISKY; break; @@ -3649,6 +3651,15 @@ sched_analyze_insn (deps, x, insn, loop_notes) int maxreg = max_reg_num (); int i; + if (code == COND_EXEC) + { + sched_analyze_2 (deps, COND_EXEC_TEST (x), insn); + + /* ??? Should be recording conditions so we reduce the number of + false dependancies. */ + x = COND_EXEC_CODE (x); + code = GET_CODE (x); + } if (code == SET || code == CLOBBER) sched_analyze_1 (deps, x, insn); else if (code == PARALLEL) @@ -3656,11 +3667,19 @@ sched_analyze_insn (deps, x, insn, loop_notes) register int i; for (i = XVECLEN (x, 0) - 1; i >= 0; i--) { - code = GET_CODE (XVECEXP (x, 0, i)); + rtx sub = XVECEXP (x, 0, i); + code = GET_CODE (sub); + + if (code == COND_EXEC) + { + sched_analyze_2 (deps, COND_EXEC_TEST (sub), insn); + sub = COND_EXEC_CODE (sub); + code = GET_CODE (sub); + } if (code == SET || code == CLOBBER) - sched_analyze_1 (deps, XVECEXP (x, 0, i), insn); + sched_analyze_1 (deps, sub, insn); else - sched_analyze_2 (deps, XVECEXP (x, 0, i), insn); + sched_analyze_2 (deps, sub, insn); } } else @@ -5313,6 +5332,11 @@ print_pattern (buf, x, verbose) print_value (t1, XEXP (x, 0), verbose); sprintf (buf, "use %s", t1); break; + case COND_EXEC: + print_value (t1, COND_EXEC_CODE (x), verbose); + print_value (t2, COND_EXEC_TEST (x), verbose); + sprintf (buf, "cond_exec %s %s", t1, t2); + break; case PARALLEL: { int i; |
