Start with a zeroed CSRNum map.

Found by valgrind.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132457 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/RegisterClassInfo.cpp b/lib/CodeGen/RegisterClassInfo.cpp
index 9deeb15a3b56098c137c91349d76d7c2d5c0fa7b..2d56ec3341b215ba57fa4b8d0243691e8a809f1a 100644 (file)
--- a/lib/CodeGen/RegisterClassInfo.cpp
+++ b/lib/CodeGen/RegisterClassInfo.cpp
@@ -39,7 +39,7 @@ void RegisterClassInfo::runOnMachineFunction(const MachineFunction &mf) {
   if (Update || CSR != CalleeSaved) {
     // Build a CSRNum map. Every CSR alias gets an entry pointing to the last
     // overlapping CSR.
-    CSRNum.reset(new uint8_t[TRI->getNumRegs()]);
+    CSRNum.reset(new uint8_t[TRI->getNumRegs()]());
     for (unsigned N = 0; unsigned Reg = CSR[N]; ++N)
       for (const unsigned *AS = TRI->getOverlaps(Reg);
            unsigned Alias = *AS; ++AS)