tree 0d8c1e3f6249a1c6689e7370553f25f0a1a900a0
parent 8975eb327427ea1963571c5c5bd1eb6778594f28
author Brandon Wu <brandon.wu@sifive.com> 1765810526 +0800
committer GitHub <noreply@github.com> 1765810526 +0800
gpgsig -----BEGIN PGP SIGNATURE-----
 
 wsFcBAABCAAQBQJpQCFeCRC1aQ7uu5UhlAAAe7oQABJfIj65vY3/9T2rW2GnjLFU
 SBzbouszXKa7ukQg/VvPXi7uk6B/BrvaifR6EqsX9x0iOAlrDWNasrN+COfO4BHh
 X3Vxv+AAQP/y0dGpQVoFXQ5sKWTUTBq7KSbwdmY6jmivfs9est7Ej0syXzHbo49K
 Sd9jw5Fhchu218AYRT0B5fP0kNWJTmp37eTh/OhUu+ER5g/euMTBlMVs2jWqSJtO
 uMkbeR8rs/RS6cIV4JBIkwX5D9ySjWsrlNkP8bK24spIBQ8C6urIcCLgSA2PRi7n
 K7OeFzuquyHU0IDI3PBkmpLmBuUftFib4gxQFjxIvo5UthNq5EKGPosU2o/VJZCz
 AYkQXNWFGq7c03HlGpLoT0uLrXeoAW2/D70oORv3hUskE2TDpI6CyQuURkQ/ff+t
 03/SnUp2zubwTK0RbC6hJNw4pIT2JvzKifN7uGasOrsfz0Pq8jBCIlGb87dT+m0c
 uM34VO3S/6Ei+YqfyPTtaphg7OG0advMmg0PuHGqk4y2WEPScm/Rch2V5s3aumy9
 FOVWY0mwr+FvBE6L0+evf9IgG8ZsxOYgjDuKn1BSGniDUKTMoF9zotkoHoWBnZhB
 bRliRgbyrTO1r4kKcO8jrtn6ie9k8RuWB1VPaN/b5cs7XB33MVklDuMJkZSHwtHZ
 DIGvBAsn6FQhnRZtGk6U
 =SP1K
 -----END PGP SIGNATURE-----
 

[llvm][RISCV] Support mulh for P extension codegen (#171581)

For mulh pattern with operands that are both signed or unsigned,
combination is performed automatically. However for mulh with operands
which are signed and unsigned respectively we need to combine them
manually same approach as what we've done for PASUB*.

Note: This is first patch for mulh which only handle basic high part
multiplication, there will be followup patches to handle rest of mulh
related instructions.