[AVX] Make Inits Foldable

Manage Inits in a FoldingSet.  This provides several benefits:

- Memory for Inits is properly managed

- Duplicate Inits are folded into Flyweights, saving memory

- It enforces const-correctness, protecting against certain classes
  of bugs

The above benefits allow Inits to be used in more contexts, which in
turn provides more dynamism to TableGen.  This enhanced capability
will be used by the AVX code generator to a fold common patterns
together.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134907 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 5 deletions

diff --git a/utils/TableGen/CallingConvEmitter.cpp b/utils/TableGen/CallingConvEmitter.cpp
index c51afd82a3..37758bc1cf 100644
--- a/utils/TableGen/CallingConvEmitter.cpp
+++ b/utils/TableGen/CallingConvEmitter.cpp
@@ -40,7 +40,7 @@ void CallingConvEmitter::run(raw_ostream &O) {
 
 
 void CallingConvEmitter::EmitCallingConv(Record *CC, raw_ostream &O) {
-  ListInit *CCActions = CC->getValueAsListInit("Actions");
+  const ListInit *CCActions = CC->getValueAsListInit("Actions");
   Counter = 0;
 
   O << "\n\nstatic bool " << CC->getName()
@@ -67,7 +67,7 @@ void CallingConvEmitter::EmitAction(Record *Action,
     O << IndentStr << "if (";
     
     if (Action->isSubClassOf("CCIfType")) {
-      ListInit *VTs = Action->getValueAsListInit("VTs");
+      const ListInit *VTs = Action->getValueAsListInit("VTs");
       for (unsigned i = 0, e = VTs->getSize(); i != e; ++i) {
         Record *VT = VTs->getElementAsRecord(i);
         if (i != 0) O << " ||\n    " << IndentStr;
@@ -91,7 +91,7 @@ void CallingConvEmitter::EmitAction(Record *Action,
         << "(ValNo, ValVT, LocVT, LocInfo, ArgFlags, State))\n"
         << IndentStr << "  return false;\n";
     } else if (Action->isSubClassOf("CCAssignToReg")) {
-      ListInit *RegList = Action->getValueAsListInit("RegList");
+      const ListInit *RegList = Action->getValueAsListInit("RegList");
       if (RegList->getSize() == 1) {
         O << IndentStr << "if (unsigned Reg = State.AllocateReg(";
         O << getQualifiedName(RegList->getElementAsRecord(0)) << ")) {\n";
@@ -112,8 +112,8 @@ void CallingConvEmitter::EmitAction(Record *Action,
       O << IndentStr << "  return false;\n";
       O << IndentStr << "}\n";
     } else if (Action->isSubClassOf("CCAssignToRegWithShadow")) {
-      ListInit *RegList = Action->getValueAsListInit("RegList");
-      ListInit *ShadowRegList = Action->getValueAsListInit("ShadowRegList");
+      const ListInit *RegList = Action->getValueAsListInit("RegList");
+      const ListInit *ShadowRegList = Action->getValueAsListInit("ShadowRegList");
       if (ShadowRegList->getSize() >0 &&
           ShadowRegList->getSize() != RegList->getSize())
         throw "Invalid length of list of shadowed registers";