[lld] [lld][RISCV] Add break to nested switch in `mergeAtomic` (PR #99762)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-lld-elf

Author: Brandon Wu (4vtomat)

<details>
<summary>Changes</summary>

This prevent the warnings from compiler.


---
Full diff: https://github.com/llvm/llvm-project/pull/99762.diff


1 Files Affected:

- (modified) lld/ELF/Arch/RISCV.cpp (+3) 


``````````diff
diff --git a/lld/ELF/Arch/RISCV.cpp b/lld/ELF/Arch/RISCV.cpp
index 6af89ce3517b7..56759c28dcf41 100644
--- a/lld/ELF/Arch/RISCV.cpp
+++ b/lld/ELF/Arch/RISCV.cpp
@@ -1131,6 +1131,7 @@ static void mergeAtomic(DenseMap<unsigned, unsigned>::iterator it,
     case RISCVAttrs::RISCVAtomicAbiTag::A6C:
       return;
     };
+    break;
 
   case RISCVAtomicAbiTag::A6S:
     switch (newTag) {
@@ -1144,6 +1145,7 @@ static void mergeAtomic(DenseMap<unsigned, unsigned>::iterator it,
     case RISCVAttrs::RISCVAtomicAbiTag::A6S:
       return;
     };
+    break;
 
   case RISCVAtomicAbiTag::A7:
     switch (newTag) {
@@ -1157,6 +1159,7 @@ static void mergeAtomic(DenseMap<unsigned, unsigned>::iterator it,
     case RISCVAttrs::RISCVAtomicAbiTag::A7:
       return;
     };
+    break;
   };
 
   // If we get here, then we have an invalid tag, so report it.

``````````

</details>


https://github.com/llvm/llvm-project/pull/99762