mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-03-10 04:07:08 +08:00
Code Issues Packages Projects Releases Wiki Activity

* combine.c (try_combine): Handle a SEQUENCE of one insn.

Browse Source 
From-SVN: r46177
This commit is contained in:
Richard Henderson 2001-10-10 23:55:16 -07:00 committed by Richard Henderson
parent 59bee412cc
commit 7f16eed442
2 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2001-10-10 Richard Henderson <rth@redhat.com>
* combine.c (try_combine): Handle a SEQUENCE of one insn.
2001-10-10 Richard Henderson <rth@redhat.com>
* langhooks.c: Include langhooks.h.
* Makefile.in (langhooks.o): Depend on it.
Wed Oct 10 23:49:06 EDT 2001 John Wehle (john@feith.com) Wed Oct 10 23:49:06 EDT 2001 John Wehle (john@feith.com)
* rtlanal.c (noop_move_p): Insns with a REG_RETVAL note * rtlanal.c (noop_move_p): Insns with a REG_RETVAL note

6
gcc/combine.c
View File

@ -2132,6 +2132,12 @@ try_combine (i3, i2, i1, new_direct_jump_p)
} }
} }
/* If we've split a jump pattern, we'll wind up with a sequence even
with one instruction. We can handle that below, so extract it. */
if (m_split && GET_CODE (m_split) == SEQUENCE
&& XVECLEN (m_split, 0) == 1)
m_split = PATTERN (XVECEXP (m_split, 0, 0));
if (m_split && GET_CODE (m_split) != SEQUENCE) if (m_split && GET_CODE (m_split) != SEQUENCE)
{ {
insn_code_number = recog_for_combine (&m_split, i3, &new_i3_notes); insn_code_number = recog_for_combine (&m_split, i3, &new_i3_notes);