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Add llvm.memset/frameaddress/returnaddress intrinsics.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11431 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2004-02-14 02:47:17 +00:00
parent f81af21caf
commit cf89908381
5 changed files with 73 additions and 15 deletions
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lib/CodeGen/IntrinsicLowering.cpp
+21 -2
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@@ -12,7 +12,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/IntrinsicLowering.h"
#include "llvm/Constant.h"
#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
#include "llvm/iOther.h"
@@ -49,6 +49,12 @@ void DefaultIntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
new CallInst(M->getOrInsertFunction("abort", Type::VoidTy, 0), "", CI);
break;
case Intrinsic::returnaddress:
case Intrinsic::frameaddress:
CI->replaceAllUsesWith(ConstantPointerNull::get(
cast<PointerType>(CI->getType())));
break;
case Intrinsic::dbg_stoppoint:
case Intrinsic::dbg_region_start:
case Intrinsic::dbg_region_end:
@@ -72,7 +78,7 @@ void DefaultIntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
break;
}
case Intrinsic::memmove: {
// The memmove intrinsic take an extra alignment argument that the memcpy
// The memmove intrinsic take an extra alignment argument that the memmove
// libc function does not.
const FunctionType *CFT = Callee->getFunctionType();
FunctionType *FT =
@@ -84,6 +90,19 @@ void DefaultIntrinsicLowering::LowerIntrinsicCall(CallInst *CI) {
CI->getName(), CI);
break;
}
case Intrinsic::memset: {
// The memset intrinsic take an extra alignment argument that the memset
// libc function does not.
const FunctionType *CFT = Callee->getFunctionType();
FunctionType *FT =
FunctionType::get(*CFT->param_begin(),
std::vector<const Type*>(CFT->param_begin(), CFT->param_end()-1),
false);
Function *MemSet = M->getOrInsertFunction("memset", FT);
new CallInst(MemSet, std::vector<Value*>(CI->op_begin()+1, CI->op_end()-1),
CI->getName(), CI);
break;
}
}
assert(CI->use_empty() &&