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Update LLVM global variable debug info API for 4.0

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This teaches Rust about an LLVM 4.0 API change for creating debug info
for global variables.

This change was made in upstream LLVM patch https://reviews.llvm.org/D20147

This is almost 1:1 copy of how clang did it in http://reviews.llvm.org/D20415
This commit is contained in:
Dylan McKay 2016-12-11 22:08:20 +13:00
parent aa7a2e9e61
commit e080804f72
1 changed files with 20 additions and 5 deletions
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25
src/rustllvm/RustWrapper.cpp
View file

@ -651,17 +651,32 @@ extern "C" LLVMRustMetadataRef LLVMRustDIBuilderCreateStaticVariable(
bool isLocalToUnit,
LLVMValueRef Val,
LLVMRustMetadataRef Decl = NULL,
uint64_t AlignInBits = 0)
{
return wrap(Builder->createGlobalVariable(
unwrapDI<DIDescriptor>(Context),
uint64_t AlignInBits = 0) {
Constant *InitVal = cast<Constant>(unwrap(Val));
#if LLVM_VERSION_GE(4, 0)
llvm::DIExpression *InitExpr = nullptr;
if (llvm::ConstantInt *IntVal = llvm::dyn_cast<llvm::ConstantInt>(InitVal)) {
InitExpr = Builder->createConstantValueExpression(
IntVal->getValue().getSExtValue());
} else if (llvm::ConstantFP *FPVal = llvm::dyn_cast<llvm::ConstantFP>(InitVal)) {
InitExpr = Builder->createConstantValueExpression(
FPVal->getValueAPF().bitcastToAPInt().getZExtValue());
}
#endif
return wrap(Builder->createGlobalVariable(unwrapDI<DIDescriptor>(Context),
Name,
LinkageName,
unwrapDI<DIFile>(File),
LineNo,
unwrapDI<DIType>(Ty),
isLocalToUnit,
cast<Constant>(unwrap(Val)),
#if LLVM_VERSION_GE(4, 0)
InitExpr,
#else
InitVal,
#endif
unwrapDIptr<MDNode>(Decl)
#if LLVM_VERSION_GE(4, 0)
, AlignInBits