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Use TargetData to obtain the correct size of the "size_t" argument for

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functions like memcpy, memmove and memset. Ensure only one prototype is
used for these functions and that it matches the system definition by
using the appropriate type for the size argument.

llvm-svn: 33618
This commit is contained in:
Reid Spencer 2007-01-29 17:42:06 +00:00
parent 34dbbca483
commit d7035b654b
1 changed files with 24 additions and 9 deletions
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33
llvm/lib/CodeGen/IntrinsicLowering.cpp
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@ -18,6 +18,7 @@
#include "llvm/Type.h"
#include "llvm/CodeGen/IntrinsicLowering.h"
#include "llvm/Support/Streams.h"
#include "llvm/Target/TargetData.h"
using namespace llvm;
template <class ArgIt>
@ -79,22 +80,21 @@ void IntrinsicLowering::AddPrototypes(Module &M) {
case Intrinsic::memcpy_i64:
M.getOrInsertFunction("memcpy", PointerType::get(Type::Int8Ty),
PointerType::get(Type::Int8Ty),
PointerType::get(Type::Int8Ty), Type::Int32Ty,
(Type *)0);
PointerType::get(Type::Int8Ty),
TD.getIntPtrType(), (Type *)0);
break;
case Intrinsic::memmove_i32:
case Intrinsic::memmove_i64:
M.getOrInsertFunction("memmove", PointerType::get(Type::Int8Ty),
PointerType::get(Type::Int8Ty),
PointerType::get(Type::Int8Ty), Type::Int32Ty,
(Type *)0);
PointerType::get(Type::Int8Ty),
TD.getIntPtrType(), (Type *)0);
break;
case Intrinsic::memset_i32:
case Intrinsic::memset_i64:
M.getOrInsertFunction("memset", PointerType::get(Type::Int8Ty),
PointerType::get(Type::Int8Ty),
Type::Int32Ty, (--(--I->arg_end()))->getType(),
(Type *)0);
PointerType::get(Type::Int8Ty), Type::Int32Ty,
TD.getIntPtrType(), (Type *)0);
break;
case Intrinsic::sqrt_f32:
case Intrinsic::sqrt_f64:
@ -358,6 +358,9 @@ void IntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
case Intrinsic::memcpy_i32: {
static Constant *MemcpyFCache = 0;
Value * Size = cast<Value>(CI->op_end()-1);
if (Size->getType() != TD.getIntPtrType())
Size->replaceAllUsesWith(new ZExtInst(Size, TD.getIntPtrType()));
ReplaceCallWith("memcpy", CI, CI->op_begin()+1, CI->op_end()-1,
(*(CI->op_begin()+1))->getType(), MemcpyFCache);
break;
@ -365,31 +368,43 @@ void IntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
case Intrinsic::memcpy_i64: {
static Constant *MemcpyFCache = 0;
Value * Size = cast<Value>(CI->op_end()-1);
if (Size->getType() != Type::Int32Ty)
Size->replaceAllUsesWith(new TruncInst(Size, Type::Int32Ty));
if (Size->getType() != TD.getIntPtrType())
Size->replaceAllUsesWith(new TruncInst(Size, TD.getIntPtrType()));
ReplaceCallWith("memcpy", CI, CI->op_begin()+1, CI->op_end()-1,
(*(CI->op_begin()+1))->getType(), MemcpyFCache);
break;
}
case Intrinsic::memmove_i32: {
static Constant *MemmoveFCache = 0;
Value * Size = cast<Value>(CI->op_end()-1);
if (Size->getType() != TD.getIntPtrType())
Size->replaceAllUsesWith(new ZExtInst(Size, TD.getIntPtrType()));
ReplaceCallWith("memmove", CI, CI->op_begin()+1, CI->op_end()-1,
(*(CI->op_begin()+1))->getType(), MemmoveFCache);
break;
}
case Intrinsic::memmove_i64: {
static Constant *MemmoveFCache = 0;
Value * Size = cast<Value>(CI->op_end()-1);
if (Size->getType() != TD.getIntPtrType())
Size->replaceAllUsesWith(new TruncInst(Size, TD.getIntPtrType()));
ReplaceCallWith("memmove", CI, CI->op_begin()+1, CI->op_end()-1,
(*(CI->op_begin()+1))->getType(), MemmoveFCache);
break;
}
case Intrinsic::memset_i32: {
static Constant *MemsetFCache = 0;
Value * Size = cast<Value>(CI->op_end()-1);
if (Size->getType() != TD.getIntPtrType())
Size->replaceAllUsesWith(new ZExtInst(Size, TD.getIntPtrType()));
ReplaceCallWith("memset", CI, CI->op_begin()+1, CI->op_end()-1,
(*(CI->op_begin()+1))->getType(), MemsetFCache);
}
case Intrinsic::memset_i64: {
static Constant *MemsetFCache = 0;
Value * Size = cast<Value>(CI->op_end()-1);
if (Size->getType() != TD.getIntPtrType())
Size->replaceAllUsesWith(new TruncInst(Size, TD.getIntPtrType()));
ReplaceCallWith("memset", CI, CI->op_begin()+1, CI->op_end()-1,
(*(CI->op_begin()+1))->getType(), MemsetFCache);
break;