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Fix for irix6 -O0 bug, see testcase gcc.c-torture/compile/981007-1.c. 

* expr.c (emit_group_store): Handle a PARALLEL destination.

From-SVN: r22893
This commit is contained in:
Jim Wilson 1998-10-07 12:12:21 +00:00 committed by Jim Wilson
parent 2883350489
commit 10a9f2beac
2 changed files with 24 additions and 1 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
Wed Oct 7 12:10:46 1998 Jim Wilson <wilson@cygnus.com>
* expr.c (emit_group_store): Handle a PARALLEL destination.
Wed Oct 7 10:07:29 1998 Richard Henderson <rth@cygnus.com> Wed Oct 7 10:07:29 1998 Richard Henderson <rth@cygnus.com>
* gcse.c (pre_insert_insn): When a call ends a bb, insert * gcse.c (pre_insert_insn): When a call ends a bb, insert

21
gcc/expr.c
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@ -2006,7 +2006,26 @@ emit_group_store (orig_dst, src, ssize, align)
/* If we won't be storing directly into memory, protect the real destination /* If we won't be storing directly into memory, protect the real destination
from strange tricks we might play. */ from strange tricks we might play. */
dst = orig_dst; dst = orig_dst;
if (GET_CODE (dst) != MEM) if (GET_CODE (dst) == PARALLEL)
{
rtx temp;
/* We can get a PARALLEL dst if there is a conditional expression in
a return statement. In that case, the dst and src are the same,
so no action is necessary. */
if (rtx_equal_p (dst, src))
return;
/* It is unclear if we can ever reach here, but we may as well handle
it. Allocate a temporary, and split this into a store/load to/from
the temporary. */
temp = assign_stack_temp (GET_MODE (dst), ssize, 0);
emit_group_store (temp, src, ssize, align);
emit_group_load (dst, temp, ssize, align);
return;
}
else if (GET_CODE (dst) != MEM)
{ {
dst = gen_reg_rtx (GET_MODE (orig_dst)); dst = gen_reg_rtx (GET_MODE (orig_dst));
/* Make life a bit easier for combine. */ /* Make life a bit easier for combine. */