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| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/combine.c | 4 |
2 files changed, 10 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 06d562bff02..b5e3b36ce76 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2012-03-10 Chung-Lin Tang <cltang@codesourcery.com> + + PR rtl-optimization/52528 + * combine.c (can_combine_p): Add setting of subst_low_luid + before call to expand_field_assignment(). + 2012-03-09 Sandra Loosemore <sandra@codesourcery.com> * doc/invoke.texi: Use correct names/markup for "GCC", "GDB", "ld", diff --git a/gcc/combine.c b/gcc/combine.c index d06de04041e..ab825e4ee98 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -1822,6 +1822,10 @@ can_combine_p (rtx insn, rtx i3, rtx pred ATTRIBUTE_UNUSED, if (set == 0) return 0; + /* The simplification in expand_field_assignment may call back to + get_last_value, so set safe guard here. */ + subst_low_luid = DF_INSN_LUID (insn); + set = expand_field_assignment (set); src = SET_SRC (set), dest = SET_DEST (set); |