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| author | Jeffrey A Law <law@cygnus.com> | 1999-07-13 17:03:22 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1999-07-13 11:03:22 -0600 |
| commit | d440ca8d597141afa64c02748d6172e7fa7483e6 (patch) | |
| tree | 16d20e5b67bd746f464ace33fd5b1266acd6d169 | |
| parent | ac691bc6ea80abb66c1c4f7191ae95be6642adec (diff) | |
| download | gcc-d440ca8d597141afa64c02748d6172e7fa7483e6.tar.gz | |
cse.c (cse_insn): Don't put hard register source into tables for the last insn of a libcall.
Wed Jun 16 20:29:00 1999 J"orn Rennecke <amylaar@cygnus.co.uk>
* cse.c (cse_insn): Don't put hard register source into tables for
the last insn of a libcall.
Bring over from mainline sources. Fixes various sparc lapack problems.
From-SVN: r28088
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/cse.c | 7 |
2 files changed, 10 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3d6f6f19a0f..1b2618ef827 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ Tue Jul 13 10:44:14 1999 Jeffrey A Law (law@cygnus.com) + Wed Jun 16 20:29:00 1999 J"orn Rennecke <amylaar@cygnus.co.uk> + * cse.c (cse_insn): Don't put hard register source into tables for + the last insn of a libcall. + * rs6000.c (find_addr_reg): Do not select r0 as an address register. diff --git a/gcc/cse.c b/gcc/cse.c index 5fc6c7889a2..605d1850753 100644 --- a/gcc/cse.c +++ b/gcc/cse.c @@ -7607,7 +7607,12 @@ cse_insn (insn, libcall_insn) enum machine_mode mode = GET_MODE (src) == VOIDmode ? GET_MODE (dest) : GET_MODE (src); - if (sets[i].src_elt == 0) + /* Don't put a hard register source into the table if this is + the last insn of a libcall. */ + if (sets[i].src_elt == 0 + && (GET_CODE (src) != REG + || REGNO (src) >= FIRST_PSEUDO_REGISTER + || ! find_reg_note (insn, REG_RETVAL, NULL_RTX))) { register struct table_elt *elt; |