diff options
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/gcse.c | 8 |
2 files changed, 10 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index d39fbfca76f..36c9a1b571e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ 2010-07-27 Maxim Kuvyrkov <maxim@codesourcery.com> + * gcse.c (hoist_code): Generate new pseudo for every new set insn. + +2010-07-27 Maxim Kuvyrkov <maxim@codesourcery.com> + PR rtl-optimization/40956 PR target/42495 PR middle-end/42574 diff --git a/gcc/gcse.c b/gcc/gcse.c index 4b2547c3367..812cc0a888d 100644 --- a/gcc/gcse.c +++ b/gcc/gcse.c @@ -4581,8 +4581,12 @@ hoist_code (void) /* Create a pseudo-reg to store the result of reaching expressions into. Get the mode for the new pseudo - from the mode of the original destination pseudo. */ - if (expr->reaching_reg == NULL) + from the mode of the original destination pseudo. + + It is important to use new pseudos whenever we + emit a set. This will allow reload to use + rematerialization for such registers. */ + if (!insn_inserted_p) expr->reaching_reg = gen_reg_rtx_and_attrs (SET_DEST (set)); |