[all-commits] [llvm/llvm-project] 4acae5: [RISCV] Remove is*Branch instruction flags from C_JR

Job Noorman via All-commits all-commits at lists.llvm.org
Tue Apr 11 00:28:53 PDT 2023


  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4acae5b2ade5f313e06ddfdf7ab70385ac79dd0e
      https://github.com/llvm/llvm-project/commit/4acae5b2ade5f313e06ddfdf7ab70385ac79dd0e
  Author: Job Noorman <jnoorman at igalia.com>
  Date:   2023-04-11 (Tue, 11 Apr 2023)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVInstrInfoC.td

  Log Message:
  -----------
  [RISCV] Remove is*Branch instruction flags from C_JR

As discussed in 1d1b3c49531b, instruction flags set in the *.td files
are under-approximations. For C_JR, isBranch and isConditionalBranch are
set even though it is used for for returns which are not considered
branches.

This patch proposes to remove those flags from C_JR. More detailed
analysis can be implemented in RISCVMCInstrAnalysis.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D147784




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