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| author | Roger Sayle <roger@eyesopen.com> | 2003-07-07 18:54:28 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2003-07-07 18:54:28 +0000 |
| commit | 2c430630da43fd1908fcb6c4b57d0a5221c86261 (patch) | |
| tree | 6db930741a1591471ed698ee5312a1c604315210 /gcc/genflags.c | |
| parent | cf633f5be8e81fa2314c0cdf74476dc5823e5df2 (diff) | |
re PR rtl-optimization/11059 (empty union optimization ice)
PR optimization/11059
* expr.c (can_store_by_pieces): Return true if length is zero.
(store_by_pieces): If length is zero and endp is two, abort,
othwerise, if length is zero and endp is not two, return "to".
(clear_by_pieces): Do nothing if length is zero.
(clear_storage): Do nothing if length is zero.
(store_constructor): Simplify code when size is zero, or the
target has already been cleared. This avoids emitting a
blockage instruction when initializing empty structures.
* g++.dg/opt/emptyunion.C: New testcase.
From-SVN: r69049
Diffstat (limited to 'gcc/genflags.c')
0 files changed, 0 insertions, 0 deletions