diff options
| author | Anton Korobeynikov <asl@math.spbu.ru> | 2006-09-14 18:23:27 +0000 |
|---|---|---|
| committer | Anton Korobeynikov <asl@math.spbu.ru> | 2006-09-14 18:23:27 +0000 |
| commit | b74ed07bfd3af42331b1964c24c39912610a08f4 (patch) | |
| tree | 23784905a2ba3e6ebe644e62b54658950cbf8fa1 /lib/Transforms | |
| parent | a17cf0a7e2d9aa6d9bb6f9461a6fa8a9ac02bab4 (diff) | |
Adding dllimport, dllexport and external weak linkage types.
DLL* linkages got full (I hope) codegeneration support in C & both x86
assembler backends.
External weak linkage added for future use, we don't provide any
codegeneration, etc. support for it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30374 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms')
| -rw-r--r-- | lib/Transforms/IPO/GlobalOpt.cpp | 4 | ||||
| -rw-r--r-- | lib/Transforms/IPO/SimplifyLibCalls.cpp | 6 |
2 files changed, 6 insertions, 4 deletions
diff --git a/lib/Transforms/IPO/GlobalOpt.cpp b/lib/Transforms/IPO/GlobalOpt.cpp index 8324b432e8..609bd94aa1 100644 --- a/lib/Transforms/IPO/GlobalOpt.cpp +++ b/lib/Transforms/IPO/GlobalOpt.cpp @@ -1245,7 +1245,7 @@ static Constant *getVal(std::map<Value*, Constant*> &ComputedValues, static bool isSimpleEnoughPointerToCommit(Constant *C) { if (GlobalVariable *GV = dyn_cast<GlobalVariable>(C)) { if (!GV->hasExternalLinkage() && !GV->hasInternalLinkage()) - return false; // do not allow weak/linkonce linkage. + return false; // do not allow weak/linkonce/dllimport/dllexport linkage. return !GV->isExternal(); // reject external globals. } if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) @@ -1254,7 +1254,7 @@ static bool isSimpleEnoughPointerToCommit(Constant *C) { isa<GlobalVariable>(CE->getOperand(0))) { GlobalVariable *GV = cast<GlobalVariable>(CE->getOperand(0)); if (!GV->hasExternalLinkage() && !GV->hasInternalLinkage()) - return false; // do not allow weak/linkonce linkage. + return false; // do not allow weak/linkonce/dllimport/dllexport linkage. return GV->hasInitializer() && ConstantFoldLoadThroughGEPConstantExpr(GV->getInitializer(), CE); } diff --git a/lib/Transforms/IPO/SimplifyLibCalls.cpp b/lib/Transforms/IPO/SimplifyLibCalls.cpp index 79cdf28e0a..9f9c52788b 100644 --- a/lib/Transforms/IPO/SimplifyLibCalls.cpp +++ b/lib/Transforms/IPO/SimplifyLibCalls.cpp @@ -178,8 +178,10 @@ public: // All the "well-known" functions are external and have external linkage // because they live in a runtime library somewhere and were (probably) // not compiled by LLVM. So, we only act on external functions that - // have external linkage and non-empty uses. - if (!FI->isExternal() || !FI->hasExternalLinkage() || FI->use_empty()) + // have external or dllimport linkage and non-empty uses. + if (!FI->isExternal() || + !(FI->hasExternalLinkage() || FI->hasDLLImportLinkage()) || + FI->use_empty()) continue; // Get the optimization class that pertains to this function |