When converting an add/xor/and triplet into a trunc/sext, only do so if the
intermediate integer type is a bitwidth that the targets can handle.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35400
91177308-0d34-0410-b5e6-
96231b3b80d8
CFF80Val = APIntOps::ashr(CFF80Val, Size);
} while (Size >= 1);
CFF80Val = APIntOps::ashr(CFF80Val, Size);
} while (Size >= 1);
- if (Size) {
- const Type *MiddleType = IntegerType::get(Size);
+ // FIXME: This shouldn't be necessary. When the backends can handle types
+ // with funny bit widths then this whole cascade of if statements should
+ // be removed. It is just here to get the size of the "middle" type back
+ // up to something that the back ends can handle.
+ const Type *MiddleType = 0;
+ switch (Size) {
+ default: break;
+ case 32: MiddleType = Type::Int32Ty; break;
+ case 16: MiddleType = Type::Int16Ty; break;
+ case 8: MiddleType = Type::Int8Ty; break;
+ }
+ if (MiddleType) {
Instruction *NewTrunc = new TruncInst(XorLHS, MiddleType, "sext");
InsertNewInstBefore(NewTrunc, I);
Instruction *NewTrunc = new TruncInst(XorLHS, MiddleType, "sext");
InsertNewInstBefore(NewTrunc, I);
- return new SExtInst(NewTrunc, I.getType());
+ return new SExtInst(NewTrunc, I.getType(), I.getName());