[COFF] Stabilize sort

d0k · d0k · commit b578f130a72f · 2020-03-28T21:38:50.000+01:00
Found by llvm::sort's expensive checks.
diff --git a/lld/COFF/PDB.cpp b/lld/COFF/PDB.cpp
@@ -1385,6 +1385,8 @@ void PDBLinker::printStats() {
       TypeIndex typeIndex;
       uint64_t totalInputSize() const { return uint64_t(dupCount) * typeSize; }
       bool operator<(const TypeSizeInfo &rhs) const {
+        if (totalInputSize() == rhs.totalInputSize())
+          return typeIndex < rhs.typeIndex;
         return totalInputSize() < rhs.totalInputSize();
       }
     };

Original file line number	Diff line number	Diff line change
`@@ -1385,6 +1385,8 @@ void PDBLinker::printStats() {`
`1385`	`1385`	`TypeIndex typeIndex;`
`1386`	`1386`	`uint64_t totalInputSize() const { return uint64_t(dupCount) * typeSize; }`
`1387`	`1387`	`bool operator<(const TypeSizeInfo &rhs) const {`
	`1388`	`+ if (totalInputSize() == rhs.totalInputSize())`
	`1389`	`+ return typeIndex < rhs.typeIndex;`
`1388`	`1390`	`return totalInputSize() < rhs.totalInputSize();`
`1389`	`1391`	`}`
`1390`	`1392`	`};`