[all-commits] [llvm/llvm-project] d55166: [NVPTX] Add reverseBranchCondition and CBranch inv...

[modiking via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d55166c23bf1e865c961440a5ef50badd5f69e0f
      https://github.com/llvm/llvm-project/commit/d55166c23bf1e865c961440a5ef50badd5f69e0f
  Author: modiking <mmo at nvidia.com>
  Date:   2026-04-27 (Mon, 27 Apr 2026)

  Changed paths:
    M llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXInstPrinter.cpp
    M llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXInstPrinter.h
    M llvm/lib/Target/NVPTX/NVPTXInstrInfo.cpp
    M llvm/lib/Target/NVPTX/NVPTXInstrInfo.h
    M llvm/lib/Target/NVPTX/NVPTXInstrInfo.td
    M llvm/test/CodeGen/NVPTX/branch-fold.mir
    M llvm/test/CodeGen/NVPTX/i128.ll
    M llvm/test/CodeGen/NVPTX/jump-table.ll
    M llvm/test/CodeGen/NVPTX/machinelicm-no-preheader.mir
    M llvm/test/CodeGen/NVPTX/switch-loop-header.mir
    M llvm/test/DebugInfo/NVPTX/inlinedAt_2.mir

  Log Message:
  -----------
  [NVPTX] Add reverseBranchCondition and CBranch inverted flag (#191889)

Add flag to `CBranch` instruction for inverted predicate branches (`@!p
bra`) and implement `reverseBranchCondition` to support branch condition
inversion.

This enables passes like branch folding to properly reverse branch
conditions, and is a prerequisite for SETP predicate inversion CSE.

Assisted-by: Cursor / Claude



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