diff options
author | Aldy Hernandez <aldyh@redhat.com> | 2023-05-16 22:20:54 +0200 |
---|---|---|
committer | Aldy Hernandez <aldyh@redhat.com> | 2023-05-17 16:08:48 +0200 |
commit | 615e3d1e9306dbf27c5af3bc6ebabb697dcc4297 (patch) | |
tree | 9595674471bbe84caa73c2b5c24aa348a969b717 | |
parent | 029bfd4f419a58a47fa27036b900def620a2cd28 (diff) | |
download | gcc-615e3d1e9306dbf27c5af3bc6ebabb697dcc4297.tar.gz |
Provide support for copying unsupported ranges.
The unsupported_range class is provided for completness sake. It is a
way to set VARYING/UNDEFINED ranges for unsupported ranges (currently
anything not float, integer, or pointer). You can't do anything with
them, except set_varying, and set_undefined. We will trap on any
other operation.
This patch provides a way to copy them, just in case they creep in.
This could happen in IPA under certain circumstances.
gcc/ChangeLog:
* value-range.cc (vrange::operator=): Add a stub to copy
unsupported ranges.
* value-range.h (is_a <unsupported_range>): New.
(Value_Range::operator=): Support copying unsupported ranges.
-rw-r--r-- | gcc/value-range.cc | 5 | ||||
-rw-r--r-- | gcc/value-range.h | 12 |
2 files changed, 16 insertions, 1 deletions
diff --git a/gcc/value-range.cc b/gcc/value-range.cc index 93c44a68365..45b1e655967 100644 --- a/gcc/value-range.cc +++ b/gcc/value-range.cc @@ -203,7 +203,10 @@ vrange::operator= (const vrange &src) else if (is_a <frange> (src)) as_a <frange> (*this) = as_a <frange> (src); else - gcc_unreachable (); + { + gcc_checking_assert (is_a <unsupported_range> (src)); + m_kind = src.m_kind; + } return *this; } diff --git a/gcc/value-range.h b/gcc/value-range.h index 0da2a42764a..ab982d18402 100644 --- a/gcc/value-range.h +++ b/gcc/value-range.h @@ -460,6 +460,13 @@ is_a <frange> (vrange &v) return v.m_discriminator == VR_FRANGE; } +template <> +inline bool +is_a <unsupported_range> (vrange &v) +{ + return v.m_discriminator == VR_UNKNOWN; +} + // For resizable ranges, resize the range up to HARD_MAX_RANGES if the // NEEDED pairs is greater than the current capacity of the range. @@ -624,6 +631,11 @@ Value_Range::operator= (const vrange &r) m_frange = as_a <frange> (r); m_vrange = &m_frange; } + else if (is_a <unsupported_range> (r)) + { + m_unsupported = as_a <unsupported_range> (r); + m_vrange = &m_unsupported; + } else gcc_unreachable (); |