https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97951
Bug ID: 97951
Summary: Template specialization of function template fails for
fixed-sized SVE vector types.
Product: gcc
Version: 10.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: david.tellenbach at arm dot com
Target Milestone: ---
Following the ACLE for SVE Version 00bet6, fixed-length types can be declared
by using the
__attribute__((arm_sve_vector_bits(N)))
type attribute. However, the following snippet fails using g++-10 (Ubuntu
10.1.0-2ubuntu1~18.04) 10.1.0:
g++-10 -march=armv8-a+sve -msve-vector-bits=512 main.cc -c
main.cc:
#include <arm_sve.h>
typedef svfloat32_t PacketXf __attribute__((arm_sve_vector_bits(512)));
template<typename T>
T func(const float& f)
{
return f;
}
template<>
PacketXf func(const float& f)
{
return svdup_n_f32(f);
}
producing the following diagnostics:
main.cc:9:10: error: template-id 'func<>' for 'PacketXf func(const float&)'
does not match any template declaration
9 | PacketXf func(const float& f) { return svdup_n_f32(f); }
| ^~~~
main.cc:6:3: note: candidate is: 'template<class T> T func(const float&)'
6 | T func(const float& f) { return f; }
| ^~~~
