Match Reg as a sign‐extended int64 constant splat.
Synopsis
Declared in <llvm/CodeGen/GlobalISel/MIPatternMatch.h>
template<>
std::optional<int64_t>
matchConstantSplat<long>(
Register Reg,
MachineRegisterInfo const& MRI);Return Value
The splat lane value, or nullopt if matching fails.
Parameters
Name |
Description |
Reg |
Register that may hold a constant splat. |
MRI |
Register info used to inspect constants. |
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