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| author | Zdenek Dvorak <dvorakz@suse.cz> | 2004-10-16 18:42:31 +0200 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2004-10-16 16:42:31 +0000 |
| commit | 71068e3124f77ddd6df4532f7c47d8e15c1987ee (patch) | |
| tree | fdb0104d729129a4c5eda4602b220107d4c54dde | |
| parent | cd9333a7266ee63b1c7272dede70f62d98708d7f (diff) | |
| download | gcc-71068e3124f77ddd6df4532f7c47d8e15c1987ee.zip gcc-71068e3124f77ddd6df4532f7c47d8e15c1987ee.tar.gz gcc-71068e3124f77ddd6df4532f7c47d8e15c1987ee.tar.bz2 | |
re PR rtl-optimization/17723 (gcc segfaults with -O2)
PR rtl-optimization/17723
* cfgcleanup.c (merge_memattrs): Handle case when
MEM_SIZE == NULL_RTX.
From-SVN: r89144
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/cfgcleanup.c | 16 |
2 files changed, 18 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 229e3f2..095d802 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2004-10-16 Zdenek Dvorak <dvorakz@suse.cz> + + PR rtl-optimization/17723 + * cfgcleanup.c (merge_memattrs): Handle case when + MEM_SIZE == NULL_RTX. + 2004-10-15 Andrew Pinski <pinskia@physics.uc.edu> * toplev.c (dump_file_name): Change type to be const. diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c index eccaab4..089c330 100644 --- a/gcc/cfgcleanup.c +++ b/gcc/cfgcleanup.c @@ -934,6 +934,8 @@ merge_memattrs (rtx x, rtx y) MEM_ATTRS (x) = 0; else { + rtx mem_size; + if (MEM_ALIAS_SET (x) != MEM_ALIAS_SET (y)) { set_mem_alias_set (x, 0); @@ -952,10 +954,16 @@ merge_memattrs (rtx x, rtx y) set_mem_offset (x, 0); set_mem_offset (y, 0); } - - set_mem_size (x, GEN_INT (MAX (INTVAL (MEM_SIZE (x)), - INTVAL (MEM_SIZE (y))))); - set_mem_size (y, MEM_SIZE (x)); + + if (!MEM_SIZE (x)) + mem_size = NULL_RTX; + else if (!MEM_SIZE (y)) + mem_size = NULL_RTX; + else + mem_size = GEN_INT (MAX (INTVAL (MEM_SIZE (x)), + INTVAL (MEM_SIZE (y)))); + set_mem_size (x, mem_size); + set_mem_size (y, mem_size); set_mem_align (x, MIN (MEM_ALIGN (x), MEM_ALIGN (y))); set_mem_align (y, MEM_ALIGN (x)); |