[all-commits] [llvm/llvm-project] 438925: Revert "[DAG] getNode() - remove oneuse limit from...

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4389252c58b783ce5b62b1942ea4b85eed556fce
      https://github.com/llvm/llvm-project/commit/4389252c58b783ce5b62b1942ea4b85eed556fce
  Author: Fangrui Song <i at maskray.me>
  Date:   2023-09-22 (Fri, 22 Sep 2023)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
    M llvm/lib/Target/X86/X86ISelLoweringCall.cpp
    M llvm/test/CodeGen/AArch64/setcc_knownbits.ll
    M llvm/test/CodeGen/RISCV/rvv/fold-vp-fadd-and-vp-fmul.ll

  Log Message:
  -----------
  Revert "[DAG] getNode() - remove oneuse limit from (zext (trunc (assertzext x))) -> (assertzext x) fold"

This reverts commit 05926a5a557878aa233ac8431b3acddf54422e58.

Caused AArch64 crash

 #12 0x00007f09eec09181 skipExtensionForVectorMULL(llvm::SDNode*, llvm::SelectionDAG&)
 #13 0x00007f09eec08289 llvm::AArch64TargetLowering::LowerMUL(llvm::SDValue, llvm::SelectionDAG&) const
 #14 0x00007f09eec1a3fd llvm::AArch64TargetLowering::LowerOperation(llvm::SDValue, llvm::SelectionDAG&) const
 #15 0x00007f09dc8586a7 (anonymous namespace)::VectorLegalizer::LowerOperationWrapper(llvm::SDNode*, llvm::SmallVectorImpl<llvm::SDValue>&)