diff options
| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2014-08-04 10:03:32 +0000 |
|---|---|---|
| committer | Kyrylo Tkachov <ktkachov@gcc.gnu.org> | 2014-08-04 10:03:32 +0000 |
| commit | 0d03cda4fc217fca4d93bc5dcb69c1ba84ae720d (patch) | |
| tree | d5db82793608239ec1d74ec7fe7d26fa56dc55f7 /gcc/optabs.c | |
| parent | 6d0b56ad0cbcc35f2e7b9cd24529a45ed1bbb865 (diff) | |
| download | gcc-0d03cda4fc217fca4d93bc5dcb69c1ba84ae720d.zip gcc-0d03cda4fc217fca4d93bc5dcb69c1ba84ae720d.tar.gz gcc-0d03cda4fc217fca4d93bc5dcb69c1ba84ae720d.tar.bz2 | |
PR 61713: ICE when expanding single-threaded version of atomic_test_and_set.
PR target/61713
* gcc/optabs.c (expand_atomic_test_and_set): Do not try to emit
move to subtarget in serial version if result is ignored.
PR target/61713
* gcc.dg/pr61756.c: New test.
From-SVN: r213555
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index c7bd9d0..65328a6 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -7356,7 +7356,10 @@ expand_atomic_test_and_set (rtx target, rtx mem, enum memmodel model) perform the operation. */ if (!ret) { - emit_move_insn (subtarget, mem); + /* If the result is ignored skip the move to target. */ + if (subtarget != const0_rtx) + emit_move_insn (subtarget, mem); + emit_move_insn (mem, trueval); ret = subtarget; } |