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From: Aldy Hernandez <aldyh@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-2760] Clear unused flags in frange for undefined ranges. Date: Wed, 21 Sep 2022 11:29:10 +0000 (GMT) [thread overview] Message-ID: <20220921112910.CC1273858C52@sourceware.org> (raw) https://gcc.gnu.org/g:324fa420b66bc084dd5b20644c6ee7b35be90c00 commit r13-2760-g324fa420b66bc084dd5b20644c6ee7b35be90c00 Author: Aldy Hernandez <aldyh@redhat.com> Date: Wed Sep 21 09:49:14 2022 +0200 Clear unused flags in frange for undefined ranges. gcc/ChangeLog: * value-range.cc (frange::combine_zeros): Call set_undefined. (frange::intersect_nans): Same. (frange::intersect): Same. (frange::verify_range): Undefined ranges do not have a type. * value-range.h (frange::set_undefined): Clear NAN flags and type. Diff: --- gcc/value-range.cc | 8 ++++---- gcc/value-range.h | 4 ++++ 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/gcc/value-range.cc b/gcc/value-range.cc index dc42b6d3120..505eb9211a7 100644 --- a/gcc/value-range.cc +++ b/gcc/value-range.cc @@ -422,7 +422,7 @@ frange::combine_zeros (const frange &r, bool union_p) if (maybe_isnan ()) m_kind = VR_NAN; else - m_kind = VR_UNDEFINED; + set_undefined (); changed = true; } return changed; @@ -506,7 +506,7 @@ frange::intersect_nans (const frange &r) if (maybe_isnan ()) m_kind = VR_NAN; else - m_kind = VR_UNDEFINED; + set_undefined (); if (flag_checking) verify_range (); return true; @@ -558,7 +558,7 @@ frange::intersect (const vrange &v) if (maybe_isnan ()) m_kind = VR_NAN; else - m_kind = VR_UNDEFINED; + set_undefined (); if (flag_checking) verify_range (); return true; @@ -696,7 +696,7 @@ frange::verify_range () switch (m_kind) { case VR_UNDEFINED: - // m_type is ignored. + gcc_checking_assert (!m_type); return; case VR_VARYING: gcc_checking_assert (m_type); diff --git a/gcc/value-range.h b/gcc/value-range.h index 325ed08f290..3668b331187 100644 --- a/gcc/value-range.h +++ b/gcc/value-range.h @@ -1083,6 +1083,10 @@ inline void frange::set_undefined () { m_kind = VR_UNDEFINED; + m_type = NULL; + m_pos_nan = false; + m_neg_nan = false; + // m_min and m_min are unitialized as they are REAL_VALUE_TYPE ??. if (flag_checking) verify_range (); }
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