diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-05-24 12:44:58 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-05-24 12:44:58 +0000 |
| commit | 5f4dd0d0e39b32015ae64d665ad17c78c1a0ca84 (patch) | |
| tree | 360e0745d4435c019b457ee1faff9ba27ed5d218 /gcc/tree-ssa-uninit.c | |
| parent | bb79f009f95d683b130f34867ed9a7d59ad967f3 (diff) | |
| download | gcc-5f4dd0d0e39b32015ae64d665ad17c78c1a0ca84.tar.gz | |
2013-05-24 Richard Biener <rguenther@suse.de>
PR tree-optimization/57287
* tree-ssa-uninit.c (compute_uninit_opnds_pos): Disregard
all SSA names that occur in abnormal PHIs.
* gcc.dg/pr57287.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@199289 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/tree-ssa-uninit.c')
| -rw-r--r-- | gcc/tree-ssa-uninit.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/gcc/tree-ssa-uninit.c b/gcc/tree-ssa-uninit.c index aa01c51658f..9a726f115a9 100644 --- a/gcc/tree-ssa-uninit.c +++ b/gcc/tree-ssa-uninit.c @@ -165,17 +165,12 @@ compute_uninit_opnds_pos (gimple phi) && uninit_undefined_value_p (op) && !can_skip_redundant_opnd (op, phi)) { - /* Ignore SSA_NAMEs on abnormal edges to setjmp - or nonlocal goto receiver. */ if (cfun->has_nonlocal_label || cfun->calls_setjmp) { - edge e = gimple_phi_arg_edge (phi, i); - if (e->flags & EDGE_ABNORMAL) - { - gimple last = last_stmt (e->src); - if (last && stmt_can_make_abnormal_goto (last)) - continue; - } + /* Ignore SSA_NAMEs that appear on abnormal edges + somewhere. */ + if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (op)) + continue; } MASK_SET_BIT (uninit_opnds, i); } |