WebAssembly: Remove unnecessary set check

arsenm · arsenm · commit 1179bdf30025 · 2022-11-02T16:05:34.000-07:00
The empty set will be default constructed if this wasn't
in the map already.
diff --git a/llvm/include/llvm/CodeGen/WasmEHFuncInfo.h b/llvm/include/llvm/CodeGen/WasmEHFuncInfo.h
@@ -50,8 +50,6 @@ struct WasmEHFuncInfo {
   }
   void setUnwindDest(const BasicBlock *BB, const BasicBlock *Dest) {
     SrcToUnwindDest[BB] = Dest;
-    if (!UnwindDestToSrcs.count(Dest))
-      UnwindDestToSrcs[Dest] = SmallPtrSet<BBOrMBB, 4>();
     UnwindDestToSrcs[Dest].insert(BB);
   }
   bool hasUnwindDest(const BasicBlock *BB) const {
@@ -76,8 +74,6 @@ struct WasmEHFuncInfo {
   }
   void setUnwindDest(MachineBasicBlock *MBB, MachineBasicBlock *Dest) {
     SrcToUnwindDest[MBB] = Dest;
-    if (!UnwindDestToSrcs.count(Dest))
-      UnwindDestToSrcs[Dest] = SmallPtrSet<BBOrMBB, 4>();
     UnwindDestToSrcs[Dest].insert(MBB);
   }
   bool hasUnwindDest(MachineBasicBlock *MBB) const {

Original file line number	Diff line number	Diff line change
`@@ -50,8 +50,6 @@ struct WasmEHFuncInfo {`
`50`	`50`	`}`
`51`	`51`	`void setUnwindDest(const BasicBlock BB, const BasicBlock Dest) {`
`52`	`52`	`SrcToUnwindDest[BB] = Dest;`
`53`		`- if (!UnwindDestToSrcs.count(Dest))`
`54`		`- UnwindDestToSrcs[Dest] = SmallPtrSet<BBOrMBB, 4>();`
`55`	`53`	`UnwindDestToSrcs[Dest].insert(BB);`
`56`	`54`	`}`
`57`	`55`	`bool hasUnwindDest(const BasicBlock *BB) const {`
`@@ -76,8 +74,6 @@ struct WasmEHFuncInfo {`
`76`	`74`	`}`
`77`	`75`	`void setUnwindDest(MachineBasicBlock MBB, MachineBasicBlock Dest) {`
`78`	`76`	`SrcToUnwindDest[MBB] = Dest;`
`79`		`- if (!UnwindDestToSrcs.count(Dest))`
`80`		`- UnwindDestToSrcs[Dest] = SmallPtrSet<BBOrMBB, 4>();`
`81`	`77`	`UnwindDestToSrcs[Dest].insert(MBB);`
`82`	`78`	`}`
`83`	`79`	`bool hasUnwindDest(MachineBasicBlock *MBB) const {`