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| author | David S. Miller <davem@tanya.rutgers.edu> | 1997-09-23 07:25:25 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1997-09-23 01:25:25 -0600 |
| commit | e13a25d5a3927ea07c9a0e047bf2d72a765b7c7f (patch) | |
| tree | 82fc0cd6179b187b9c38df4ee7197638c2eb9aaf | |
| parent | 4fd10464e796a92bab1f9f30f913ef3b94676be1 (diff) | |
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expmed.c (expand_divmod): If compute_mode is not the same as mode...
* expmed.c (expand_divmod): If compute_mode is not the same as
mode, handle the case where convert_modes() causes op1 to no
longer be a CONST_INT.
From-SVN: r15672
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/expmed.c | 8 |
2 files changed, 12 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1964beb..9eb883e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ Tue Sep 23 01:15:50 1997 David S. Miller <davem@tanya.rutgers.edu> + * expmed.c (expand_divmod): If compute_mode is not the same as + mode, handle the case where convert_modes() causes op1 to no + longer be a CONST_INT. + * reorg.c (dbr_schedule): At end of this pass, add REG_BR_PRED note holding get_jump_flags() calculation to all JUMP_INSNs. * rtl.h (enum reg_note): New note types REG_BR_PRED and REG_SAVE_AREA. diff --git a/gcc/expmed.c b/gcc/expmed.c index fa3cc49..b6f77c8 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -2831,6 +2831,14 @@ expand_divmod (rem_flag, code, mode, op0, op1, target, unsignedp) { op0 = convert_modes (compute_mode, mode, op0, unsignedp); op1 = convert_modes (compute_mode, mode, op1, unsignedp); + + /* convert_modes may have tossed op1 into a register, so we + absolutely must recompute the following. */ + op1_is_constant = GET_CODE (op1) == CONST_INT; + op1_is_pow2 = (op1_is_constant + && ((EXACT_POWER_OF_2_OR_ZERO_P (INTVAL (op1)) + || (! unsignedp + && EXACT_POWER_OF_2_OR_ZERO_P (-INTVAL (op1)))))); } /* If one of the operands is a volatile MEM, copy it into a register. */ |