Mercurial > projects > ldc
view gen/linkage.h @ 1346:6f4154b318ef
Remove an old workaround that was kept around for ABI-compatibility on x86-64
between different LLVM versions.
This means LLVM r67588 is required if you want to compile for x86-64, otherwise
the backend will assert when you try to return e.g. struct { int i; char c; }
from a function. (In particular, this is no longer compatible with LLVM 2.5)
It also means that any code returning small structs on x86-64 will probably
need to be recompiled in order to be linkable to code compiled with this change.
| author | Frits van Bommel <fvbommel wxs.nl> |
|---|---|
| date | Tue, 12 May 2009 15:50:48 +0200 |
| parents | 123812e02bc8 |
| children | 3647bef175d7 |
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#ifndef LDC_GEN_LINKAGE_H #define LDC_GEN_LINKAGE_H #include "gen/llvm-version.h" // Make it easier to test new linkage types // Also used to adapt to some changes in LLVM between 2.5 and 2.6 // LLVM r66339 introduces LinkOnceODRLinkage, which is just what we want here. // (It also renamed LinkOnceLinkage, so this #if is needed for LDC to compile // with both 2.5 and trunk) #if LLVM_REV >= 66339 # define TEMPLATE_LINKAGE_TYPE llvm::GlobalValue::LinkOnceODRLinkage # define TYPEINFO_LINKAGE_TYPE llvm::GlobalValue::LinkOnceODRLinkage // The One-Definition-Rule shouldn't matter for debug info, right? # define DEBUGINFO_LINKONCE_LINKAGE_TYPE \ llvm::GlobalValue::LinkOnceAnyLinkage // For 2.5 and any LLVM revision before 66339 we want to use LinkOnceLinkage // It's equivalent to LinkOnceAnyLinkage in trunk except that the inliner had a // hack (removed in r66339) to allow inlining of templated functions even though // LinkOnce doesn't technically allow that. #else # define TEMPLATE_LINKAGE_TYPE llvm::GlobalValue::LinkOnceLinkage # define TYPEINFO_LINKAGE_TYPE llvm::GlobalValue::LinkOnceLinkage # define DEBUGINFO_LINKONCE_LINKAGE_TYPE \ llvm::GlobalValue::LinkOnceLinkage #endif #endif