[PATCH] D86601: [LegalizeTypes] Add ROTL/ROTR to ScalarizeVectorResult.

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

I thought a non-native vector type would trigger this, but this might be a different bug?

  $ cat rot.ll 
  define <2 x i16> @var_funnnel_v2i16(<2 x i16> %x, <2 x i16> %amt) nounwind {
    %res = call <2 x i16> @llvm.fshr.v2i16(<2 x i16> %x, <2 x i16> %x, <2 x i16> %amt)
    ret <2 x i16> %res
  }
  
  declare <2 x i16> @llvm.fshr.v2i16(<2 x i16>, <2 x i16>, <2 x i16>)
  $ llc -o - rot.ll -mtriple=aarch64 
  	.text
  	.file	"rot.ll"
  PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace.
  Stack dump:
  0.	Program arguments: ./llc -o - rot.ll -mtriple=aarch64 
  1.	Running pass 'Function Pass Manager' on module 'rot.ll'.
  2.	Running pass 'AArch64 Instruction Selection' on function '@var_funnnel_v2i16'
  0  llc                      0x0000000107f0bcd5 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 37
  1  llc                      0x0000000107f0aa68 llvm::sys::RunSignalHandlers() + 248
  2  llc                      0x0000000107f0c2ec SignalHandler(int) + 268
  3  libsystem_platform.dylib 0x00007fff6a6725fd _sigtramp + 29
  4  libsystem_platform.dylib 0x0000000000000010 _sigtramp + 18446603338731018800
  5  llc                      0x0000000107c8f9f3 llvm::DAGTypeLegalizer::ReplaceValueWith(llvm::SDValue, llvm::SDValue) + 67
  6  llc                      0x0000000107c66090 llvm::DAGTypeLegalizer::PromoteIntegerResult(llvm::SDNode*, unsigned int) + 784
  7  llc                      0x0000000107c8ef38 llvm::DAGTypeLegalizer::run() + 2808


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