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| author | Zdenek Dvorak <ook@ucw.cz> | 2008-03-31 16:19:52 +0200 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2008-03-31 14:19:52 +0000 |
| commit | 66f91b93db67ccea9e4d0ec803492e2dbd03974c (patch) | |
| tree | ffad40ad79ed9653b2a213a4f8b639c6da089e67 /gcc/loop-invariant.c | |
| parent | 6b20c50ffe1de0c65fc196825236387da0b5ba34 (diff) | |
| download | gcc-66f91b93db67ccea9e4d0ec803492e2dbd03974c.zip gcc-66f91b93db67ccea9e4d0ec803492e2dbd03974c.tar.gz gcc-66f91b93db67ccea9e4d0ec803492e2dbd03974c.tar.bz2 | |
re PR rtl-optimization/35729 (const volatile variable access incorrectly hoisted out of loop)
PR rtl-optimization/35729
* loop-invariant.c (check_maybe_invariant): Disallow volatile memory
references.
* gcc.dg/pr35729.c: New test.
From-SVN: r133755
Diffstat (limited to 'gcc/loop-invariant.c')
| -rw-r--r-- | gcc/loop-invariant.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/loop-invariant.c b/gcc/loop-invariant.c index ba1f288..64c16a9 100644 --- a/gcc/loop-invariant.c +++ b/gcc/loop-invariant.c @@ -206,7 +206,7 @@ check_maybe_invariant (rtx x) /* Just handle the most trivial case where we load from an unchanging location (most importantly, pic tables). */ - if (MEM_READONLY_P (x)) + if (MEM_READONLY_P (x) && !MEM_VOLATILE_P (x)) break; return false; |