diff options
| author | Bernd Schmidt <crux@pool.informatik.rwth-aachen.de> | 1998-11-06 19:22:36 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1998-11-06 12:22:36 -0700 |
| commit | d30e8ef0dcdb0ae77a98d79879fe07600d9c4c77 (patch) | |
| tree | dde8d64c18236392a248d9a3f6d9894119e51477 | |
| parent | 6ba89f8ecba5e27e4c847308cceaec857aaaa5cc (diff) | |
| download | gcc-d30e8ef0dcdb0ae77a98d79879fe07600d9c4c77.zip gcc-d30e8ef0dcdb0ae77a98d79879fe07600d9c4c77.tar.gz gcc-d30e8ef0dcdb0ae77a98d79879fe07600d9c4c77.tar.bz2 | |
reload1.c (emit_reload_insns): When rewriting the SET_DEST of a previous insn to store directly into our...
* reload1.c (emit_reload_insns): When rewriting the SET_DEST of a
previous insn to store directly into our reload register, make sure
that if the source of the previous insn is a reload register, its
spill_reg_store and spill_reg_stored_to values are cleared.
From-SVN: r23550
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/reload1.c | 12 |
2 files changed, 19 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 87c79fe..1c94751 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +Fri Nov 6 20:15:19 1998 Bernd Schmidt <crux@pool.informatik.rwth-aachen.de> + + * reload1.c (emit_reload_insns): When rewriting the SET_DEST of a + previous insn to store directly into our reload register, make sure + that if the source of the previous insn is a reload register, its + spill_reg_store and spill_reg_stored_to values are cleared. + Fri Nov 6 16:35:10 1998 David Edelsohn <edelsohn@mhpcc.edu> * rs6000.md (floatunssidf2_internal splitter): Use base register diff --git a/gcc/reload1.c b/gcc/reload1.c index 685d783..ce574a1 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -6774,6 +6774,18 @@ emit_reload_insns (chain) { /* Store into the reload register instead of the pseudo. */ SET_DEST (PATTERN (temp)) = reloadreg; + + /* If the previous insn is an output reload, the source is + a reload register, and its spill_reg_store entry will + contain the previous destination. This is now + invalid. */ + if (GET_CODE (SET_SRC (PATTERN (temp))) == REG + && REGNO (SET_SRC (PATTERN (temp))) < FIRST_PSEUDO_REGISTER) + { + spill_reg_store[REGNO (SET_SRC (PATTERN (temp)))] = 0; + spill_reg_stored_to[REGNO (SET_SRC (PATTERN (temp)))] = 0; + } + /* If these are the only uses of the pseudo reg, pretend for GDB it lives in the reload reg we used. */ if (REG_N_DEATHS (REGNO (old)) == 1 |