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| author | Jeffrey A Law <law@cygnus.com> | 1998-07-08 20:46:15 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1998-07-08 14:46:15 -0600 |
| commit | 02e39abcc1b8fd6bdce02e3aaf65acd980c85398 (patch) | |
| tree | aeccb74e5dcc7a1fbb57d55e5622b4b567736e59 | |
| parent | d7f8f04755de0d816a98b5dc4e0fd0d8841fbe7c (diff) | |
| download | gcc-02e39abcc1b8fd6bdce02e3aaf65acd980c85398.zip gcc-02e39abcc1b8fd6bdce02e3aaf65acd980c85398.tar.gz gcc-02e39abcc1b8fd6bdce02e3aaf65acd980c85398.tar.bz2 | |
cse.c (count_reg_usage): Count registers used in addresses of CLOBBERs.
* cse.c (count_reg_usage): Count registers used in addresses of
CLOBBERs.
From-SVN: r21012
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/cse.c | 8 |
2 files changed, 12 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 70d8199..e3a8837 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +Wed Jul 8 21:43:14 1998 Jeffrey A Law (law@cygnus.com) + + * cse.c (count_reg_usage): Count registers used in addresses of + CLOBBERs. + Wed Jul 8 15:08:29 1998 Jim Wilson <wilson@cygnus.com> * Makefile.in (STAGESTUFF): Readd line lost during June 9 FSF merge. @@ -8784,7 +8784,13 @@ count_reg_usage (x, counts, dest, incr) case CONST_DOUBLE: case SYMBOL_REF: case LABEL_REF: - case CLOBBER: + return; + + case CLOBBER: + /* If we are clobbering a MEM, mark any registers inside the address + as being used. */ + if (GET_CODE (XEXP (x, 0)) == MEM) + count_reg_usage (XEXP (XEXP (x, 0), 0), counts, NULL_RTX, incr); return; case SET: |