Set PIELevel module flag

[tmsriram]

Summary

In patch http://reviews.llvm.org/D19671, I added a patch to create PIELevel module flag. This patch sets the flag.

[rnk]

lgtm

lib/CodeGen/CodeGenModule.cpp

492–498

This seems simpler as:

assert(PLevel < 3 && "invalid PIE level");
getModule().setPIELevel(static_cast<llvm::PIELevel::Level>(PLevel));

[tmsriram]

Simplify code setting PICLevel and PIELevel module flags.

[rnk]

still lgtm

lib/CodeGen/CodeGenModule.cpp

486

formatting nit: no space between 'assert' and '('

[tmsriram]

267948

lib/CodeGen/CodeGenModule.cpp

void CodeGenModule::Release() {
 
   if (uint32_t PLevel = Context.getLangOpts().PICLevel) {
     llvm::PICLevel::Level PL = llvm::PICLevel::Default;
     switch (PLevel) {
     case 0: break;
     case 1: PL = llvm::PICLevel::Small; break;
     case 2: PL = llvm::PICLevel::Large; break;
     default: llvm_unreachable("Invalid PIC Level");
     }
 
     getModule().setPICLevel(PL);
   }
 
+  if (uint32_t PLevel = Context.getLangOpts().PIELevel) {
+    llvm::PIELevel::Level PL = llvm::PIELevel::Default;
+    switch (PLevel) {
+    case 0: break;
+    case 1: PL = llvm::PIELevel::Small; break;
+    case 2: PL = llvm::PIELevel::Large; break;
+    default: llvm_unreachable("Invalid PIE Level");
+    }
+
+    getModule().setPIELevel(PL);
+  }
+
   SimplifyPersonality();
 
   if (getCodeGenOpts().EmitDeclMetadata)
     EmitDeclMetadata();
 
   if (getCodeGenOpts().EmitGcovArcs || getCodeGenOpts().EmitGcovNotes)
     EmitCoverageFile();