diff options
| author | Kazu Hirata <kazu@cs.umass.edu> | 2004-11-02 13:18:32 +0000 |
|---|---|---|
| committer | Kazu Hirata <kazu@gcc.gnu.org> | 2004-11-02 13:18:32 +0000 |
| commit | 54699c021d74f8422c187104012fed4557d9d78d (patch) | |
| tree | abaa1be5c85696330d85aa1caaa8ff1233fcbadd /gcc | |
| parent | 641e7348d48fc0f5d97fa76cdde1325b9f75802c (diff) | |
| download | gcc-54699c021d74f8422c187104012fed4557d9d78d.zip gcc-54699c021d74f8422c187104012fed4557d9d78d.tar.gz gcc-54699c021d74f8422c187104012fed4557d9d78d.tar.bz2 | |
tree-phinodes.c (remove_phi_arg_num): Do not zero the element that's being removed.
* tree-phinodes.c (remove_phi_arg_num): Do not zero the
element that's being removed.
From-SVN: r89984
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-phinodes.c | 8 |
2 files changed, 9 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ef00d11..1e1662a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2004-11-02 Kazu Hirata <kazu@cs.umass.edu> + * tree-phinodes.c (remove_phi_arg_num): Do not zero the + element that's being removed. + +2004-11-02 Kazu Hirata <kazu@cs.umass.edu> + * tree-ssa-threadupdate.c (copy_phis_to_block): Install PHI arguments using PENDING_STMT. (thread_block): Call copy_phis_to_block after redirecting an diff --git a/gcc/tree-phinodes.c b/gcc/tree-phinodes.c index 89fbb3d..e7883e3 100644 --- a/gcc/tree-phinodes.c +++ b/gcc/tree-phinodes.c @@ -396,10 +396,10 @@ remove_phi_arg_num (tree phi, int i) PHI_ARG_NONZERO (phi, i) = PHI_ARG_NONZERO (phi, num_elem - 1); } - /* Shrink the vector and return. */ - SET_PHI_ARG_DEF (phi, num_elem - 1, NULL_TREE); - PHI_ARG_EDGE (phi, num_elem - 1) = NULL; - PHI_ARG_NONZERO (phi, num_elem - 1) = false; + /* Shrink the vector and return. Note that we do not have to clear + PHI_ARG_DEF, PHI_ARG_EDGE, or PHI_ARG_NONZERO because the garbage + collector will not look at those elements beyond the first + PHI_NUM_ARGS elements of the array. */ PHI_NUM_ARGS (phi)--; } |