From e13a25d5a3927ea07c9a0e047bf2d72a765b7c7f Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Tue, 23 Sep 1997 07:25:25 +0000 Subject: [PATCH] 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 --- gcc/ChangeLog | 4 ++++ gcc/expmed.c | 8 ++++++++ 2 files changed, 12 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1964beb7f8b..9eb883e9e53 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ Tue Sep 23 01:15:50 1997 David S. Miller + * 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 fa3cc490a8c..b6f77c813d2 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. */ -- 2.30.2