diff options
| author | Maxim Kuvyrkov <maxim@codesourcery.com> | 2010-07-27 19:36:31 +0000 |
|---|---|---|
| committer | Maxim Kuvyrkov <mkuvyrkov@gcc.gnu.org> | 2010-07-27 19:36:31 +0000 |
| commit | 3d489bc712a95777f917e16ae38a8e78935d6f11 (patch) | |
| tree | 7ca50581c77bd37d8f8718282819457b794be6dc | |
| parent | ce4c0015a16e1126844f5feaa57bcdf0aebdcb30 (diff) | |
| download | gcc-3d489bc712a95777f917e16ae38a8e78935d6f11.zip gcc-3d489bc712a95777f917e16ae38a8e78935d6f11.tar.gz gcc-3d489bc712a95777f917e16ae38a8e78935d6f11.tar.bz2 | |
* gcse.c (hoist_code): Generate new pseudo for every new set insn.
From-SVN: r162591
| -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 d39fbfc..36c9a1b 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 @@ -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)); |