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Use Intrinsic::getDeclaration in more places.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49338 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands
2008-04-07 13:45:04 +00:00
parent 3d292aca03
commit e2c4304654
4 changed files with 18 additions and 37 deletions
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28
lib/Transforms/IPO/SimplifyLibCalls.cpp
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@@ -21,6 +21,7 @@
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Instructions.h"
#include "llvm/Intrinsics.h"
#include "llvm/Module.h"
#include "llvm/Pass.h"
#include "llvm/ADT/StringMap.h"
@@ -320,12 +321,9 @@ public:
/// @brief Return a Function* for the memcpy libcall
Constant *get_memcpy() {
if (!memcpy_func) {
const Type *SBP = PointerType::getUnqual(Type::Int8Ty);
const char *N = TD->getIntPtrType() == Type::Int32Ty ?
"llvm.memcpy.i32" : "llvm.memcpy.i64";
memcpy_func = M->getOrInsertFunction(N, Type::VoidTy, SBP, SBP,
TD->getIntPtrType(), Type::Int32Ty,
NULL);
Intrinsic::ID IID = (TD->getIntPtrType() == Type::Int32Ty) ?
Intrinsic::memcpy_i32 : Intrinsic::memcpy_i64;
memcpy_func = Intrinsic::getDeclaration(M, IID);
}
return memcpy_func;
}
@@ -1696,23 +1694,11 @@ public:
// ffsl(x) -> x == 0 ? 0 : llvm.cttz(x)+1
// ffsll(x) -> x == 0 ? 0 : llvm.cttz(x)+1
const Type *ArgType = TheCall->getOperand(1)->getType();
const char *CTTZName;
assert(ArgType->getTypeID() == Type::IntegerTyID &&
"llvm.cttz argument is not an integer?");
unsigned BitWidth = cast<IntegerType>(ArgType)->getBitWidth();
if (BitWidth == 8)
CTTZName = "llvm.cttz.i8";
else if (BitWidth == 16)
CTTZName = "llvm.cttz.i16";
else if (BitWidth == 32)
CTTZName = "llvm.cttz.i32";
else {
assert(BitWidth == 64 && "Unknown bitwidth");
CTTZName = "llvm.cttz.i64";
}
Constant *F = SLC.getModule()->getOrInsertFunction(CTTZName, ArgType,
ArgType, NULL);
Constant *F = Intrinsic::getDeclaration(SLC.getModule(),
Intrinsic::cttz, &ArgType, 1);
Value *V = CastInst::createIntegerCast(TheCall->getOperand(1), ArgType,
false/*ZExt*/, "tmp", TheCall);
Value *V2 = CallInst::Create(F, V, "tmp", TheCall);