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| author | Eric Botcazou <ebotcazou@adacore.com> | 2017-10-08 21:13:52 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2017-10-08 21:13:52 +0000 |
| commit | 561593c104a3fcce354d644b12072b1da8690baa (patch) | |
| tree | 149b1fac42bf695760c221ab62b82c4d671b93af /gcc/loop-iv.c | |
| parent | caeaa0b3c63bc2634f7ae8f684224b2773c782c1 (diff) | |
| download | gcc-561593c104a3fcce354d644b12072b1da8690baa.zip gcc-561593c104a3fcce354d644b12072b1da8690baa.tar.gz gcc-561593c104a3fcce354d644b12072b1da8690baa.tar.bz2 | |
tree-outof-ssa.h (ssaexpand): Add partitions_for_undefined_values.
* tree-outof-ssa.h (ssaexpand): Add partitions_for_undefined_values.
(always_initialized_rtx_for_ssa_name_p): New predicate.
* tree-outof-ssa.c (remove_ssa_form): Initialize new field of SA.
(finish_out_of_ssa): Free new field of SA.
* tree-ssa-coalesce.h (get_undefined_value_partitions): Declare.
* tree-ssa-coalesce.c: Include tree-ssa.h.
(get_parm_default_def_partitions): Remove extern keyword.
(get_undefined_value_partitions): New function.
* expr.c (expand_expr_real_1) <expand_decl_rtl>: For a SSA_NAME, do
not set SUBREG_PROMOTED_VAR_P on the sub-register if it may contain
uninitialized bits.
* loop-iv.c (iv_get_reaching_def): Disqualify all subregs.
From-SVN: r253530
Diffstat (limited to 'gcc/loop-iv.c')
| -rw-r--r-- | gcc/loop-iv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/loop-iv.c b/gcc/loop-iv.c index 1d0c66f..45e8229 100644 --- a/gcc/loop-iv.c +++ b/gcc/loop-iv.c @@ -353,7 +353,7 @@ iv_get_reaching_def (rtx_insn *insn, rtx reg, df_ref *def) adef = DF_REF_CHAIN (use)->ref; /* We do not handle setting only part of the register. */ - if (DF_REF_FLAGS (adef) & DF_REF_READ_WRITE) + if (DF_REF_FLAGS (adef) & (DF_REF_READ_WRITE | DF_REF_SUBREG)) return GRD_INVALID; def_insn = DF_REF_INSN (adef); |