[llvm] Add CodeView S_LABEL32 symbols for jump table targets (for Windows debugging) (PR #146121)

[Fangrui Song via llvm-commits]

================
@@ -3566,15 +3566,38 @@ void CodeViewDebug::collectDebugInfoForJumpTables(const MachineFunction *MF,
           break;
         }
 
-        CurFn->JumpTables.push_back(
-            {EntrySize, Base, BaseOffset, Branch,
-             MF->getJTISymbol(JumpTableIndex, MMI->getContext()),
-             JTI.getJumpTables()[JumpTableIndex].MBBs.size()});
+        const MachineJumpTableEntry &JTE = JTI.getJumpTables()[JumpTableIndex];
+
+        JumpTableInfo CVJTI{EntrySize,
+                            Base,
+                            BaseOffset,
+                            Branch,
+                            MF->getJTISymbol(JumpTableIndex, MMI->getContext()),
+                            JTE.MBBs.size()};
+
+        for (const auto &MBB : JTE.MBBs) {
+          CVJTI.Cases.push_back(MBB->getSymbol());
----------------
MaskRay wrote:

omit braces for singe-line simple body https://llvm.org/docs/CodingStandards.html#don-t-use-braces-on-simple-single-statement-bodies-of-if-else-loop-statements

https://github.com/llvm/llvm-project/pull/146121