For PR950:
This patch implements the first increment for the Signless Types feature.
All changes pertain to removing the ConstantSInt and ConstantUInt classes
in favor of just using ConstantInt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31063 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp
index 7e802ba..359766d 100644
--- a/lib/Analysis/ConstantFolding.cpp
+++ b/lib/Analysis/ConstantFolding.cpp
@@ -163,14 +163,15 @@
default:
break;
}
- } else if (ConstantUInt *Op = dyn_cast<ConstantUInt>(Operands[0])) {
- uint64_t V = Op->getValue();
+ } else if (ConstantInt *Op = dyn_cast<ConstantInt>(Operands[0])) {
+ assert(Op->getType()->isUnsigned() && "bswap args must be unsigned");
+ uint64_t V = Op->getZExtValue();
if (Name == "llvm.bswap.i16")
- return ConstantUInt::get(Ty, ByteSwap_16(V));
+ return ConstantInt::get(Ty, ByteSwap_16(V));
else if (Name == "llvm.bswap.i32")
- return ConstantUInt::get(Ty, ByteSwap_32(V));
+ return ConstantInt::get(Ty, ByteSwap_32(V));
else if (Name == "llvm.bswap.i64")
- return ConstantUInt::get(Ty, ByteSwap_64(V));
+ return ConstantInt::get(Ty, ByteSwap_64(V));
}
} else if (Operands.size() == 2) {
if (ConstantFP *Op1 = dyn_cast<ConstantFP>(Operands[0])) {