From 8f32f7189b12f67aa4a19bc7c3855b599980eca0 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sat, 14 Jul 2007 00:23:28 +0000 Subject: Implement trivial integer initializers, like 'int X = 4;' for global vars. Approach suggested by Keith. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@39849 91177308-0d34-0410-b5e6-96231b3b80d8 --- CodeGen/CodeGenModule.cpp | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'CodeGen/CodeGenModule.cpp') diff --git a/CodeGen/CodeGenModule.cpp b/CodeGen/CodeGenModule.cpp index 4bf4b86bcb..d091dd73eb 100644 --- a/CodeGen/CodeGenModule.cpp +++ b/CodeGen/CodeGenModule.cpp @@ -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. -- cgit v1.2.3-18-g5258