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arch: Make the DummyVec... types the same size as RegVal.

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This makes RegClass-es which don't specify a size work with the Dummy
types of VecRegContainer and VecPredRegContainer, and avoids having to
set up extra plumbing in ISAs that don't need it.

Change-Id: I059306a54b2a9cf7a22258a01e0821e370f0590a
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/56929
Maintainer: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Gabe Black <gabe.black@gmail.com>
This commit is contained in:
Gabe Black
2022-02-17 23:12:31 -08:00
parent da290e9e2e
commit f847b4a5e9
2 changed files with 44 additions and 2 deletions
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23
src/arch/generic/vec_pred_reg.hh
View File

@@ -44,6 +44,7 @@
#include <vector>
#include "base/cprintf.hh"
#include "base/types.hh"
#include "sim/serialize_handlers.hh"
namespace gem5
@@ -394,7 +395,27 @@ struct ShowParam<VecPredRegContainer<NumBits, Packed>>
/// Dummy type aliases and constants for architectures that do not implement
/// vector predicate registers.
/// @{
using DummyVecPredRegContainer = VecPredRegContainer<8, false>;
struct DummyVecPredRegContainer
{
RegVal filler = 0;
bool operator == (const DummyVecPredRegContainer &d) const { return true; }
bool operator != (const DummyVecPredRegContainer &d) const { return true; }
};
template <>
struct ParseParam<DummyVecPredRegContainer>
{
static bool
parse(const std::string &s, DummyVecPredRegContainer &value)
{
return false;
}
};
static_assert(sizeof(DummyVecPredRegContainer) == sizeof(RegVal));
static inline std::ostream &
operator<<(std::ostream &os, const DummyVecPredRegContainer &d)
{
return os;
}
/// @}
} // namespace gem5

23
src/arch/generic/vec_reg.hh
View File

@@ -104,6 +104,7 @@
#include "base/cprintf.hh"
#include "base/logging.hh"
#include "base/types.hh"
#include "sim/serialize_handlers.hh"
namespace gem5
@@ -264,7 +265,27 @@ struct ShowParam<VecRegContainer<Sz>>
* vector registers.
*/
/** @{ */
using DummyVecRegContainer = VecRegContainer<8>;
struct DummyVecRegContainer
{
RegVal filler = 0;
bool operator == (const DummyVecRegContainer &d) const { return true; }
bool operator != (const DummyVecRegContainer &d) const { return true; }
};
template <>
struct ParseParam<DummyVecRegContainer>
{
static bool
parse(const std::string &s, DummyVecRegContainer &value)
{
return false;
}
};
static_assert(sizeof(DummyVecRegContainer) == sizeof(RegVal));
static inline std::ostream &
operator<<(std::ostream &os, const DummyVecRegContainer &d)
{
return os;
}
/** @} */
} // namespace gem5