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author | Carlo Kok <ck@remobjects.com> | 2014-04-30 17:53:04 +0000 |
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committer | Carlo Kok <ck@remobjects.com> | 2014-04-30 17:53:04 +0000 |
commit | 78ecea93a30e5fe05277f11b07a2d32a7c68e31d (patch) | |
tree | 667050af69c54c589ea16f0d6acdc26ba9ea1e8a /lib | |
parent | bf741d2bddfa75babd032db3039064746a8f86ba (diff) | |
download | llvm-78ecea93a30e5fe05277f11b07a2d32a7c68e31d.tar.gz llvm-78ecea93a30e5fe05277f11b07a2d32a7c68e31d.tar.bz2 llvm-78ecea93a30e5fe05277f11b07a2d32a7c68e31d.tar.xz |
[IPO/MergeFunctions] changes so it doesn't try to bitcast a struct return type but instead recreates it with insert/extract value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207679 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r-- | lib/Transforms/IPO/MergeFunctions.cpp | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/lib/Transforms/IPO/MergeFunctions.cpp b/lib/Transforms/IPO/MergeFunctions.cpp index a1764ca33c..6e907b0f12 100644 --- a/lib/Transforms/IPO/MergeFunctions.cpp +++ b/lib/Transforms/IPO/MergeFunctions.cpp @@ -784,8 +784,23 @@ void MergeFunctions::writeThunkOrAlias(Function *F, Function *G) { // Helper for writeThunk, // Selects proper bitcast operation, // but a bit simpler then CastInst::getCastOpcode. -static Value* createCast(IRBuilder<false> &Builder, Value *V, Type *DestTy) { +static Value *createCast(IRBuilder<false> &Builder, Value *V, Type *DestTy) { Type *SrcTy = V->getType(); + if (SrcTy->isStructTy()) { + assert(DestTy->isStructTy()); + assert(SrcTy->getStructNumElements() == DestTy->getStructNumElements()); + Value *Result = UndefValue::get(DestTy); + for (unsigned int I = 0, E = SrcTy->getStructNumElements(); I < E; ++I) { + Value *Element = createCast( + Builder, Builder.CreateExtractValue(V, ArrayRef<unsigned int>(I)), + DestTy->getStructElementType(I)); + + Result = + Builder.CreateInsertValue(Result, Element, ArrayRef<unsigned int>(I)); + } + return Result; + } + assert(!DestTy->isStructTy()); if (SrcTy->isIntegerTy() && DestTy->isPointerTy()) return Builder.CreateIntToPtr(V, DestTy); else if (SrcTy->isPointerTy() && DestTy->isIntegerTy()) |