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| author | Andreas Krebbel <krebbel1@de.ibm.com> | 2005-09-06 08:15:35 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2005-09-06 08:15:35 +0000 |
| commit | 70a640af36dabccba824de7661405b5667ea57c7 (patch) | |
| tree | 3ffd7f90a3fcf7814fc1054ebcd4950dda87ffd4 /gcc | |
| parent | fc781ee0007046369d57a9798badd524f96e7557 (diff) | |
| download | gcc-70a640af36dabccba824de7661405b5667ea57c7.zip gcc-70a640af36dabccba824de7661405b5667ea57c7.tar.gz gcc-70a640af36dabccba824de7661405b5667ea57c7.tar.bz2 | |
gcse.c (try_replace_reg): Disallow REG_EQUAL notes for STRICT_LOW_PART SETs.
2005-09-06 Andreas Krebbel <krebbel1@de.ibm.com>
* gcse.c (try_replace_reg): Disallow REG_EQUAL notes for
STRICT_LOW_PART SETs.
From-SVN: r103934
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/gcse.c | 3 |
2 files changed, 7 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 88efaaf..3ab98be 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2005-09-06 Andreas Krebbel <krebbel1@de.ibm.com> + + * gcse.c (try_replace_reg): Disallow REG_EQUAL notes for + STRICT_LOW_PART SETs. + 2005-09-06 Alan Modra <amodra@bigpond.net.au> PR middle-end/21460 @@ -2677,7 +2677,8 @@ try_replace_reg (rtx from, rtx to, rtx insn) have a note, and have no special SET, add a REG_EQUAL note to not lose information. */ if (!success && note == 0 && set != 0 - && GET_CODE (SET_DEST (set)) != ZERO_EXTRACT) + && GET_CODE (SET_DEST (set)) != ZERO_EXTRACT + && GET_CODE (SET_DEST (set)) != STRICT_LOW_PART) note = set_unique_reg_note (insn, REG_EQUAL, copy_rtx (src)); } |