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| author | Bernd Schmidt <bernds@cygnus.co.uk> | 1999-12-08 17:49:26 +0000 |
|---|---|---|
| committer | Bernd Schmidt <crux@gcc.gnu.org> | 1999-12-08 17:49:26 +0000 |
| commit | cd8998a31a6d93f850510f2392831e871670c069 (patch) | |
| tree | 729f7a2a866db2b2e3466560abb391c1e342d9ea /gcc/loop.c | |
| parent | dd4be5a186c6a6ddac94995f26d9af1c50043da4 (diff) | |
| download | gcc-cd8998a31a6d93f850510f2392831e871670c069.tar.gz | |
Don't hoist volatile mems out of loops.
From-SVN: r30834
Diffstat (limited to 'gcc/loop.c')
| -rw-r--r-- | gcc/loop.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/loop.c b/gcc/loop.c index 90e6c44f5ea..96f5e66b65e 100644 --- a/gcc/loop.c +++ b/gcc/loop.c @@ -9667,7 +9667,8 @@ insert_loop_mem (mem, data) because we can't put it in a register. We still store it in the table, though, so that if we see the same address later, but in a non-BLK mode, we'll not think we can optimize it at that point. */ - loop_mems[loop_mems_idx].optimize = (GET_MODE (m) != BLKmode); + loop_mems[loop_mems_idx].optimize = (GET_MODE (m) != BLKmode + && ! MEM_VOLATILE_P (m)); loop_mems[loop_mems_idx].reg = NULL_RTX; ++loop_mems_idx; |