[llvm] [RISCV] Remove duplicate addRequired in RISCVDeadRegisterDefinitions (PR #208366)

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llvmorg-github-actions[bot] wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-risc-v

Author: Jim Lin (tclin914)

<details>
<summary>Changes</summary>

getAnalysisUsage called AU.addRequired<LiveIntervalsWrapperPass>() twice. 
Drop the redundant second call.

---
Full diff: https://github.com/llvm/llvm-project/pull/208366.diff


1 Files Affected:

- (modified) llvm/lib/Target/RISCV/RISCVDeadRegisterDefinitions.cpp (-1) 


``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVDeadRegisterDefinitions.cpp b/llvm/lib/Target/RISCV/RISCVDeadRegisterDefinitions.cpp
index 5d3d9b5c4cf03..2969aa179a372 100644
--- a/llvm/lib/Target/RISCV/RISCVDeadRegisterDefinitions.cpp
+++ b/llvm/lib/Target/RISCV/RISCVDeadRegisterDefinitions.cpp
@@ -35,7 +35,6 @@ class RISCVDeadRegisterDefinitions : public MachineFunctionPass {
     AU.setPreservesCFG();
     AU.addRequired<LiveIntervalsWrapperPass>();
     AU.addPreserved<LiveIntervalsWrapperPass>();
-    AU.addRequired<LiveIntervalsWrapperPass>();
     AU.addPreserved<SlotIndexesWrapperPass>();
     AU.addPreserved<LiveDebugVariablesWrapperLegacy>();
     AU.addPreserved<LiveStacksWrapperLegacy>();

``````````

</details>


https://github.com/llvm/llvm-project/pull/208366