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| author | Alkis Evlogimenos <alkis@evlogimenos.com> | 2004-10-24 01:41:10 +0000 |
|---|---|---|
| committer | Alkis Evlogimenos <alkis@evlogimenos.com> | 2004-10-24 01:41:10 +0000 |
| commit | 60ab1402981a757c5ee785de540a5d0f85839c5d (patch) | |
| tree | 8774ccdcd5a4dad2a12b0145803a9b2925910953 /lib | |
| parent | d4b4a99587a0856473b9334455f6cebcb4fe2583 (diff) | |
| download | external_llvm-60ab1402981a757c5ee785de540a5d0f85839c5d.zip external_llvm-60ab1402981a757c5ee785de540a5d0f85839c5d.tar.gz external_llvm-60ab1402981a757c5ee785de540a5d0f85839c5d.tar.bz2 | |
Add ConstantExpr::getSizeOf(Type*).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17196 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/VMCore/Constants.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/VMCore/Constants.cpp b/lib/VMCore/Constants.cpp index 77aa231..3d2e658 100644 --- a/lib/VMCore/Constants.cpp +++ b/lib/VMCore/Constants.cpp @@ -1244,6 +1244,15 @@ Constant *ConstantExpr::getZeroExtend(Constant *C, const Type *Ty) { return ConstantExpr::getCast(C, Ty); } +Constant *ConstantExpr::getSizeOf(const Type *Ty) { + // sizeof is implemented as: (unsigned) gep (Ty)null, 1 + return getCast( + getGetElementPtr( + getNullValue(Ty), + std::vector<Constant*>(1, ConstantInt::get(Type::UByteTy, 1))), + Type::UIntTy); +} + Constant *ConstantExpr::getTy(const Type *ReqTy, unsigned Opcode, Constant *C1, Constant *C2) { if (Opcode == Instruction::Shl || Opcode == Instruction::Shr) |