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| author | Andreas Schwab <schwab@issan.cs.uni-dortmund.de> | 1998-12-30 21:51:53 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1998-12-30 14:51:53 -0700 |
| commit | 2c74fb2bf089989bff9918b995397df004a4c406 (patch) | |
| tree | 880f03b2c51711302c749758efcf3185e2a2341c | |
| parent | ff381587ecb48a6d844d87d0d22399da71716b56 (diff) | |
| download | gcc-2c74fb2bf089989bff9918b995397df004a4c406.zip gcc-2c74fb2bf089989bff9918b995397df004a4c406.tar.gz gcc-2c74fb2bf089989bff9918b995397df004a4c406.tar.bz2 | |
loop.c (check_dbra_loop): While reversing the loop...
* loop.c (check_dbra_loop): While reversing the loop, if the
comparison value has a VOID mode use the mode of the other operand
to compute the mask.
From-SVN: r24444
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/loop.c | 8 |
2 files changed, 12 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9f27896..015af04 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +1998-12-30 Andreas Schwab <schwab@issan.cs.uni-dortmund.de> + + * loop.c (check_dbra_loop): While reversing the loop, if the + comparison value has a VOID mode use the mode of the other operand + to compute the mask. + Wed Dec 30 22:24:00 1998 Michael Meissner <meissner@cygnus.com> * rs6000.md ({save,restore}_stack_function): Take 2 operands to @@ -6857,8 +6857,12 @@ check_dbra_loop (loop_end, insn_count, loop_start, loop_info) add_val = INTVAL (bl->biv->add_val); comparison_value = XEXP (comparison, 1); - comparison_const_width - = GET_MODE_BITSIZE (GET_MODE (XEXP (comparison, 1))); + if (GET_MODE (comparison_value) == VOIDmode) + comparison_const_width + = GET_MODE_BITSIZE (GET_MODE (XEXP (comparison, 0))); + else + comparison_const_width + = GET_MODE_BITSIZE (GET_MODE (comparison_value)); if (comparison_const_width > HOST_BITS_PER_WIDE_INT) comparison_const_width = HOST_BITS_PER_WIDE_INT; comparison_sign_mask |