diff options
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/cse.c | 7 |
2 files changed, 11 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6f050bc..7a97024 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +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 + last insn of a libcall. + Wed Jun 16 19:44:33 1999 J"orn Rennecke <amylaar@cygnus.co.uk> * loop.c (strength_reduce): Insert sets of derived givs at every @@ -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; |