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| author | Richard Henderson <rth@redhat.com> | 2002-05-06 13:08:30 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2002-05-06 13:08:30 -0700 |
| commit | 688ec718568245e50e45a3824d8dda4675b57549 (patch) | |
| tree | 007f781b3cb5ee76774c81024bf40c10cc7bd887 /gcc | |
| parent | f6536266dddb810607d32292045b2d3a93921583 (diff) | |
| download | gcc-688ec718568245e50e45a3824d8dda4675b57549.zip gcc-688ec718568245e50e45a3824d8dda4675b57549.tar.gz gcc-688ec718568245e50e45a3824d8dda4675b57549.tar.bz2 | |
recog.c (if_test_bypass_p): Accept multiple set insns for OUT, and any jump or call for IN.
* recog.c (if_test_bypass_p): Accept multiple set insns for OUT,
and any jump or call for IN.
From-SVN: r53234
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/recog.c | 52 |
2 files changed, 46 insertions, 11 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3dd3a44..f181753 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2002-05-06 Richard Henderson <rth@redhat.com> + + * recog.c (if_test_bypass_p): Accept multiple set insns for OUT, + and any jump or call for IN. + 2002-05-06 Bernd Schmidt <bernds@redhat.com> * config/i386/i386.h (CPP_CPUCOMMON_SPEC): Define __SSE2_BUILTINS__ if diff --git a/gcc/recog.c b/gcc/recog.c index 3038126..3b9d961 100644 --- a/gcc/recog.c +++ b/gcc/recog.c @@ -3329,9 +3329,10 @@ store_data_bypass_p (out_insn, in_insn) return true; } -/* True if the dependency between OUT_INSN and IN_INSN is in the - IF_THEN_ELSE condition, and not the THEN or ELSE branch. - Both OUT_INSN and IN_INSN must be single_set. */ +/* True if the dependency between OUT_INSN and IN_INSN is in the IF_THEN_ELSE + condition, and not the THEN or ELSE branch. OUT_INSN may be either a single + or multiple set; IN_INSN should be single_set for truth, but for convenience + of insn categorization may be any JUMP or CALL insn. */ int if_test_bypass_p (out_insn, in_insn) @@ -3339,20 +3340,49 @@ if_test_bypass_p (out_insn, in_insn) { rtx out_set, in_set; - out_set = single_set (out_insn); - if (! out_set) - abort (); - in_set = single_set (in_insn); if (! in_set) - abort (); + { + if (GET_CODE (in_insn) == JUMP_INSN || GET_CODE (in_insn) == CALL_INSN) + return false; + abort (); + } if (GET_CODE (SET_SRC (in_set)) != IF_THEN_ELSE) return false; + in_set = SET_SRC (in_set); - if (reg_mentioned_p (SET_DEST (out_set), XEXP (in_set, 1)) - || reg_mentioned_p (SET_DEST (out_set), XEXP (in_set, 2))) - return false; + out_set = single_set (out_insn); + if (out_set) + { + if (reg_mentioned_p (SET_DEST (out_set), XEXP (in_set, 1)) + || reg_mentioned_p (SET_DEST (out_set), XEXP (in_set, 2))) + return false; + } + else + { + rtx out_pat; + int i; + + out_pat = PATTERN (out_insn); + if (GET_CODE (out_pat) != PARALLEL) + abort (); + + for (i = 0; i < XVECLEN (out_pat, 0); i++) + { + rtx exp = XVECEXP (out_pat, 0, i); + + if (GET_CODE (exp) == CLOBBER) + continue; + + if (GET_CODE (exp) != SET) + abort (); + + if (reg_mentioned_p (SET_DEST (out_set), XEXP (in_set, 1)) + || reg_mentioned_p (SET_DEST (out_set), XEXP (in_set, 2))) + return false; + } + } return true; } |