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Implement trivial integer initializers, like 'int X = 4;' for global 

vars.  Approach suggested by Keith.

llvm-svn: 39849
This commit is contained in:
Chris Lattner 2007-07-14 00:23:28 +00:00
parent 6ee31f5df8
commit 9d3b0e0001
1 changed files with 10 additions and 5 deletions
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15
clang/CodeGen/CodeGenModule.cpp
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@ -16,6 +16,7 @@
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "clang/Basic/TargetInfo.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Function.h"
#include "llvm/GlobalVariable.h"
@ -63,12 +64,16 @@ void CodeGenModule::EmitGlobalVar(const FileVarDecl *D) {
return;
// Otherwise, convert the initializer, or use zero if appropriate.
llvm::Constant *Init;
if (D->getInit() == 0)
llvm::Constant *Init = 0;
if (D->getInit() == 0) {
Init = llvm::Constant::getNullValue(GV->getType()->getElementType());
else
assert(D->getInit() == 0 && "FIXME: Global variable initializers unimp!");
} else if (D->getType()->isIntegerType()) {
llvm::APSInt Value(getContext().getTypeSize(D->getInit()->getType()));
if (D->getInit()->isIntegerConstantExpr(Value))
Init = llvm::ConstantInt::get(Value);
}
assert(Init && "FIXME: Global variable initializers unimp!");
GV->setInitializer(Init);
// Set the llvm linkage type as appropriate.