[all-commits] [llvm/llvm-project] b2c38f: [RISCV] Correct the immediate swizzling for P-ext ...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b2c38f153efe96e4a1497baed9fd25faa1e058c1
      https://github.com/llvm/llvm-project/commit/b2c38f153efe96e4a1497baed9fd25faa1e058c1
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2025-07-22 (Tue, 22 Jul 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVInstrInfoP.td
    M llvm/test/MC/RISCV/rv32p-valid.s
    M llvm/test/MC/RISCV/rv64p-valid.s

  Log Message:
  -----------
  [RISCV] Correct the immediate swizzling for P-ext plui.h/w. (#149945)

If I'm reading the spec correctly, plui.h/w encode the immediate
differently from pli.h/w. pli.h/w appear to rotate the immediate
left by 1 before encoding while plui.h/w rotates the immediate right
by 1 before encoding.

Since I was splitting the classes, I made the name closer to the
instruction names since the immediate width was ambiguous. I've
added an _i suffix to make it similar to base and Zb* class names.



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