From 721c201bd55ffb73cb2ba8d39e0570fa38c44e15 Mon Sep 17 00:00:00 2001
From: dim <dim@FreeBSD.org>
Date: Wed, 15 Aug 2012 19:34:23 +0000
Subject: Vendor import of llvm trunk r161861:
http://llvm.org/svn/llvm-project/llvm/trunk@161861
---
lib/Transforms/Utils/BuildLibCalls.cpp | 160 +++++++++++++++++++++++++--------
1 file changed, 122 insertions(+), 38 deletions(-)
(limited to 'lib/Transforms/Utils/BuildLibCalls.cpp')
diff --git a/lib/Transforms/Utils/BuildLibCalls.cpp b/lib/Transforms/Utils/BuildLibCalls.cpp
index a808303..e13fd71 100644
--- a/lib/Transforms/Utils/BuildLibCalls.cpp
+++ b/lib/Transforms/Utils/BuildLibCalls.cpp
@@ -12,18 +12,18 @@
//===----------------------------------------------------------------------===//
#include "llvm/Transforms/Utils/BuildLibCalls.h"
-#include "llvm/Type.h"
#include "llvm/Constants.h"
#include "llvm/Function.h"
+#include "llvm/IRBuilder.h"
+#include "llvm/Intrinsics.h"
#include "llvm/Intrinsics.h"
#include "llvm/LLVMContext.h"
+#include "llvm/LLVMContext.h"
#include "llvm/Module.h"
-#include "llvm/Support/IRBuilder.h"
+#include "llvm/Type.h"
+#include "llvm/ADT/SmallString.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetLibraryInfo.h"
-#include "llvm/LLVMContext.h"
-#include "llvm/Intrinsics.h"
-#include "llvm/ADT/SmallString.h"
using namespace llvm;
@@ -34,7 +34,11 @@ Value *llvm::CastToCStr(Value *V, IRBuilder<> &B) {
/// EmitStrLen - Emit a call to the strlen function to the builder, for the
/// specified pointer. This always returns an integer value of size intptr_t.
-Value *llvm::EmitStrLen(Value *Ptr, IRBuilder<> &B, const TargetData *TD) {
+Value *llvm::EmitStrLen(Value *Ptr, IRBuilder<> &B, const TargetData *TD,
+ const TargetLibraryInfo *TLI) {
+ if (!TLI->has(LibFunc::strlen))
+ return 0;
+
Module *M = B.GetInsertBlock()->getParent()->getParent();
AttributeWithIndex AWI[2];
AWI[0] = AttributeWithIndex::get(1, Attribute::NoCapture);
@@ -42,7 +46,7 @@ Value *llvm::EmitStrLen(Value *Ptr, IRBuilder<> &B, const TargetData *TD) {
Attribute::NoUnwind);
LLVMContext &Context = B.GetInsertBlock()->getContext();
- Constant *StrLen = M->getOrInsertFunction("strlen", AttrListPtr::get(AWI, 2),
+ Constant *StrLen = M->getOrInsertFunction("strlen", AttrListPtr::get(AWI),
TD->getIntPtrType(Context),
B.getInt8PtrTy(),
NULL);
@@ -53,18 +57,48 @@ Value *llvm::EmitStrLen(Value *Ptr, IRBuilder<> &B, const TargetData *TD) {
return CI;
}
+/// EmitStrNLen - Emit a call to the strnlen function to the builder, for the
+/// specified pointer. Ptr is required to be some pointer type, MaxLen must
+/// be of size_t type, and the return value has 'intptr_t' type.
+Value *llvm::EmitStrNLen(Value *Ptr, Value *MaxLen, IRBuilder<> &B,
+ const TargetData *TD, const TargetLibraryInfo *TLI) {
+ if (!TLI->has(LibFunc::strnlen))
+ return 0;
+
+ Module *M = B.GetInsertBlock()->getParent()->getParent();
+ AttributeWithIndex AWI[2];
+ AWI[0] = AttributeWithIndex::get(1, Attribute::NoCapture);
+ AWI[1] = AttributeWithIndex::get(~0u, Attribute::ReadOnly |
+ Attribute::NoUnwind);
+
+ LLVMContext &Context = B.GetInsertBlock()->getContext();
+ Constant *StrNLen = M->getOrInsertFunction("strnlen", AttrListPtr::get(AWI),
+ TD->getIntPtrType(Context),
+ B.getInt8PtrTy(),
+ TD->getIntPtrType(Context),
+ NULL);
+ CallInst *CI = B.CreateCall2(StrNLen, CastToCStr(Ptr, B), MaxLen, "strnlen");
+ if (const Function *F = dyn_cast<Function>(StrNLen->stripPointerCasts()))
+ CI->setCallingConv(F->getCallingConv());
+
+ return CI;
+}
+
/// EmitStrChr - Emit a call to the strchr function to the builder, for the
/// specified pointer and character. Ptr is required to be some pointer type,
/// and the return value has 'i8*' type.
Value *llvm::EmitStrChr(Value *Ptr, char C, IRBuilder<> &B,
- const TargetData *TD) {
+ const TargetData *TD, const TargetLibraryInfo *TLI) {
+ if (!TLI->has(LibFunc::strchr))
+ return 0;
+
Module *M = B.GetInsertBlock()->getParent()->getParent();
AttributeWithIndex AWI =
AttributeWithIndex::get(~0u, Attribute::ReadOnly | Attribute::NoUnwind);
Type *I8Ptr = B.getInt8PtrTy();
Type *I32Ty = B.getInt32Ty();
- Constant *StrChr = M->getOrInsertFunction("strchr", AttrListPtr::get(&AWI, 1),
+ Constant *StrChr = M->getOrInsertFunction("strchr", AttrListPtr::get(AWI),
I8Ptr, I8Ptr, I32Ty, NULL);
CallInst *CI = B.CreateCall2(StrChr, CastToCStr(Ptr, B),
ConstantInt::get(I32Ty, C), "strchr");
@@ -75,7 +109,11 @@ Value *llvm::EmitStrChr(Value *Ptr, char C, IRBuilder<> &B,
/// EmitStrNCmp - Emit a call to the strncmp function to the builder.
Value *llvm::EmitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len,
- IRBuilder<> &B, const TargetData *TD) {
+ IRBuilder<> &B, const TargetData *TD,
+ const TargetLibraryInfo *TLI) {
+ if (!TLI->has(LibFunc::strncmp))
+ return 0;
+
Module *M = B.GetInsertBlock()->getParent()->getParent();
AttributeWithIndex AWI[3];
AWI[0] = AttributeWithIndex::get(1, Attribute::NoCapture);
@@ -84,7 +122,7 @@ Value *llvm::EmitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len,
Attribute::NoUnwind);
LLVMContext &Context = B.GetInsertBlock()->getContext();
- Value *StrNCmp = M->getOrInsertFunction("strncmp", AttrListPtr::get(AWI, 3),
+ Value *StrNCmp = M->getOrInsertFunction("strncmp", AttrListPtr::get(AWI),
B.getInt32Ty(),
B.getInt8PtrTy(),
B.getInt8PtrTy(),
@@ -101,13 +139,17 @@ Value *llvm::EmitStrNCmp(Value *Ptr1, Value *Ptr2, Value *Len,
/// EmitStrCpy - Emit a call to the strcpy function to the builder, for the
/// specified pointer arguments.
Value *llvm::EmitStrCpy(Value *Dst, Value *Src, IRBuilder<> &B,
- const TargetData *TD, StringRef Name) {
+ const TargetData *TD, const TargetLibraryInfo *TLI,
+ StringRef Name) {
+ if (!TLI->has(LibFunc::strcpy))
+ return 0;
+
Module *M = B.GetInsertBlock()->getParent()->getParent();
AttributeWithIndex AWI[2];
AWI[0] = AttributeWithIndex::get(2, Attribute::NoCapture);
AWI[1] = AttributeWithIndex::get(~0u, Attribute::NoUnwind);
Type *I8Ptr = B.getInt8PtrTy();
- Value *StrCpy = M->getOrInsertFunction(Name, AttrListPtr::get(AWI, 2),
+ Value *StrCpy = M->getOrInsertFunction(Name, AttrListPtr::get(AWI),
I8Ptr, I8Ptr, I8Ptr, NULL);
CallInst *CI = B.CreateCall2(StrCpy, CastToCStr(Dst, B), CastToCStr(Src, B),
Name);
@@ -119,13 +161,17 @@ Value *llvm::EmitStrCpy(Value *Dst, Value *Src, IRBuilder<> &B,
/// EmitStrNCpy - Emit a call to the strncpy function to the builder, for the
/// specified pointer arguments.
Value *llvm::EmitStrNCpy(Value *Dst, Value *Src, Value *Len,
- IRBuilder<> &B, const TargetData *TD, StringRef Name) {
+ IRBuilder<> &B, const TargetData *TD,
+ const TargetLibraryInfo *TLI, StringRef Name) {
+ if (!TLI->has(LibFunc::strncpy))
+ return 0;
+
Module *M = B.GetInsertBlock()->getParent()->getParent();
AttributeWithIndex AWI[2];
AWI[0] = AttributeWithIndex::get(2, Attribute::NoCapture);
AWI[1] = AttributeWithIndex::get(~0u, Attribute::NoUnwind);
Type *I8Ptr = B.getInt8PtrTy();
- Value *StrNCpy = M->getOrInsertFunction(Name, AttrListPtr::get(AWI, 2),
+ Value *StrNCpy = M->getOrInsertFunction(Name, AttrListPtr::get(AWI),
I8Ptr, I8Ptr, I8Ptr,
Len->getType(), NULL);
CallInst *CI = B.CreateCall3(StrNCpy, CastToCStr(Dst, B), CastToCStr(Src, B),
@@ -139,13 +185,17 @@ Value *llvm::EmitStrNCpy(Value *Dst, Value *Src, Value *Len,
/// This expects that the Len and ObjSize have type 'intptr_t' and Dst/Src
/// are pointers.
Value *llvm::EmitMemCpyChk(Value *Dst, Value *Src, Value *Len, Value *ObjSize,
- IRBuilder<> &B, const TargetData *TD) {
+ IRBuilder<> &B, const TargetData *TD,
+ const TargetLibraryInfo *TLI) {
+ if (!TLI->has(LibFunc::memcpy_chk))
+ return 0;
+
Module *M = B.GetInsertBlock()->getParent()->getParent();
AttributeWithIndex AWI;
AWI = AttributeWithIndex::get(~0u, Attribute::NoUnwind);
LLVMContext &Context = B.GetInsertBlock()->getContext();
Value *MemCpy = M->getOrInsertFunction("__memcpy_chk",
- AttrListPtr::get(&AWI, 1),
+ AttrListPtr::get(AWI),
B.getInt8PtrTy(),
B.getInt8PtrTy(),
B.getInt8PtrTy(),
@@ -162,12 +212,16 @@ Value *llvm::EmitMemCpyChk(Value *Dst, Value *Src, Value *Len, Value *ObjSize,
/// EmitMemChr - Emit a call to the memchr function. This assumes that Ptr is
/// a pointer, Val is an i32 value, and Len is an 'intptr_t' value.
Value *llvm::EmitMemChr(Value *Ptr, Value *Val,
- Value *Len, IRBuilder<> &B, const TargetData *TD) {
+ Value *Len, IRBuilder<> &B, const TargetData *TD,
+ const TargetLibraryInfo *TLI) {
+ if (!TLI->has(LibFunc::memchr))
+ return 0;
+
Module *M = B.GetInsertBlock()->getParent()->getParent();
AttributeWithIndex AWI;
AWI = AttributeWithIndex::get(~0u, Attribute::ReadOnly | Attribute::NoUnwind);
LLVMContext &Context = B.GetInsertBlock()->getContext();
- Value *MemChr = M->getOrInsertFunction("memchr", AttrListPtr::get(&AWI, 1),
+ Value *MemChr = M->getOrInsertFunction("memchr", AttrListPtr::get(AWI),
B.getInt8PtrTy(),
B.getInt8PtrTy(),
B.getInt32Ty(),
@@ -183,7 +237,11 @@ Value *llvm::EmitMemChr(Value *Ptr, Value *Val,
/// EmitMemCmp - Emit a call to the memcmp function.
Value *llvm::EmitMemCmp(Value *Ptr1, Value *Ptr2,
- Value *Len, IRBuilder<> &B, const TargetData *TD) {
+ Value *Len, IRBuilder<> &B, const TargetData *TD,
+ const TargetLibraryInfo *TLI) {
+ if (!TLI->has(LibFunc::memcmp))
+ return 0;
+
Module *M = B.GetInsertBlock()->getParent()->getParent();
AttributeWithIndex AWI[3];
AWI[0] = AttributeWithIndex::get(1, Attribute::NoCapture);
@@ -192,7 +250,7 @@ Value *llvm::EmitMemCmp(Value *Ptr1, Value *Ptr2,
Attribute::NoUnwind);
LLVMContext &Context = B.GetInsertBlock()->getContext();
- Value *MemCmp = M->getOrInsertFunction("memcmp", AttrListPtr::get(AWI, 3),
+ Value *MemCmp = M->getOrInsertFunction("memcmp", AttrListPtr::get(AWI),
B.getInt32Ty(),
B.getInt8PtrTy(),
B.getInt8PtrTy(),
@@ -236,7 +294,11 @@ Value *llvm::EmitUnaryFloatFnCall(Value *Op, StringRef Name, IRBuilder<> &B,
/// EmitPutChar - Emit a call to the putchar function. This assumes that Char
/// is an integer.
-Value *llvm::EmitPutChar(Value *Char, IRBuilder<> &B, const TargetData *TD) {
+Value *llvm::EmitPutChar(Value *Char, IRBuilder<> &B, const TargetData *TD,
+ const TargetLibraryInfo *TLI) {
+ if (!TLI->has(LibFunc::putchar))
+ return 0;
+
Module *M = B.GetInsertBlock()->getParent()->getParent();
Value *PutChar = M->getOrInsertFunction("putchar", B.getInt32Ty(),
B.getInt32Ty(), NULL);
@@ -254,33 +316,40 @@ Value *llvm::EmitPutChar(Value *Char, IRBuilder<> &B, const TargetData *TD) {
/// EmitPutS - Emit a call to the puts function. This assumes that Str is
/// some pointer.
-void llvm::EmitPutS(Value *Str, IRBuilder<> &B, const TargetData *TD) {
+Value *llvm::EmitPutS(Value *Str, IRBuilder<> &B, const TargetData *TD,
+ const TargetLibraryInfo *TLI) {
+ if (!TLI->has(LibFunc::puts))
+ return 0;
+
Module *M = B.GetInsertBlock()->getParent()->getParent();
AttributeWithIndex AWI[2];
AWI[0] = AttributeWithIndex::get(1, Attribute::NoCapture);
AWI[1] = AttributeWithIndex::get(~0u, Attribute::NoUnwind);
- Value *PutS = M->getOrInsertFunction("puts", AttrListPtr::get(AWI, 2),
+ Value *PutS = M->getOrInsertFunction("puts", AttrListPtr::get(AWI),
B.getInt32Ty(),
B.getInt8PtrTy(),
NULL);
CallInst *CI = B.CreateCall(PutS, CastToCStr(Str, B), "puts");
if (const Function *F = dyn_cast<Function>(PutS->stripPointerCasts()))
CI->setCallingConv(F->getCallingConv());
-
+ return CI;
}
/// EmitFPutC - Emit a call to the fputc function. This assumes that Char is
/// an integer and File is a pointer to FILE.
-void llvm::EmitFPutC(Value *Char, Value *File, IRBuilder<> &B,
- const TargetData *TD) {
+Value *llvm::EmitFPutC(Value *Char, Value *File, IRBuilder<> &B,
+ const TargetData *TD, const TargetLibraryInfo *TLI) {
+ if (!TLI->has(LibFunc::fputc))
+ return 0;
+
Module *M = B.GetInsertBlock()->getParent()->getParent();
AttributeWithIndex AWI[2];
AWI[0] = AttributeWithIndex::get(2, Attribute::NoCapture);
AWI[1] = AttributeWithIndex::get(~0u, Attribute::NoUnwind);
Constant *F;
if (File->getType()->isPointerTy())
- F = M->getOrInsertFunction("fputc", AttrListPtr::get(AWI, 2),
+ F = M->getOrInsertFunction("fputc", AttrListPtr::get(AWI),
B.getInt32Ty(),
B.getInt32Ty(), File->getType(),
NULL);
@@ -295,12 +364,16 @@ void llvm::EmitFPutC(Value *Char, Value *File, IRBuilder<> &B,
if (const Function *Fn = dyn_cast<Function>(F->stripPointerCasts()))
CI->setCallingConv(Fn->getCallingConv());
+ return CI;
}
/// EmitFPutS - Emit a call to the puts function. Str is required to be a
/// pointer and File is a pointer to FILE.
-void llvm::EmitFPutS(Value *Str, Value *File, IRBuilder<> &B,
- const TargetData *TD, const TargetLibraryInfo *TLI) {
+Value *llvm::EmitFPutS(Value *Str, Value *File, IRBuilder<> &B,
+ const TargetData *TD, const TargetLibraryInfo *TLI) {
+ if (!TLI->has(LibFunc::fputs))
+ return 0;
+
Module *M = B.GetInsertBlock()->getParent()->getParent();
AttributeWithIndex AWI[3];
AWI[0] = AttributeWithIndex::get(1, Attribute::NoCapture);
@@ -309,7 +382,7 @@ void llvm::EmitFPutS(Value *Str, Value *File, IRBuilder<> &B,
StringRef FPutsName = TLI->getName(LibFunc::fputs);
Constant *F;
if (File->getType()->isPointerTy())
- F = M->getOrInsertFunction(FPutsName, AttrListPtr::get(AWI, 3),
+ F = M->getOrInsertFunction(FPutsName, AttrListPtr::get(AWI),
B.getInt32Ty(),
B.getInt8PtrTy(),
File->getType(), NULL);
@@ -321,13 +394,17 @@ void llvm::EmitFPutS(Value *Str, Value *File, IRBuilder<> &B,
if (const Function *Fn = dyn_cast<Function>(F->stripPointerCasts()))
CI->setCallingConv(Fn->getCallingConv());
+ return CI;
}
/// EmitFWrite - Emit a call to the fwrite function. This assumes that Ptr is
/// a pointer, Size is an 'intptr_t', and File is a pointer to FILE.
-void llvm::EmitFWrite(Value *Ptr, Value *Size, Value *File,
- IRBuilder<> &B, const TargetData *TD,
- const TargetLibraryInfo *TLI) {
+Value *llvm::EmitFWrite(Value *Ptr, Value *Size, Value *File,
+ IRBuilder<> &B, const TargetData *TD,
+ const TargetLibraryInfo *TLI) {
+ if (!TLI->has(LibFunc::fwrite))
+ return 0;
+
Module *M = B.GetInsertBlock()->getParent()->getParent();
AttributeWithIndex AWI[3];
AWI[0] = AttributeWithIndex::get(1, Attribute::NoCapture);
@@ -337,7 +414,7 @@ void llvm::EmitFWrite(Value *Ptr, Value *Size, Value *File,
StringRef FWriteName = TLI->getName(LibFunc::fwrite);
Constant *F;
if (File->getType()->isPointerTy())
- F = M->getOrInsertFunction(FWriteName, AttrListPtr::get(AWI, 3),
+ F = M->getOrInsertFunction(FWriteName, AttrListPtr::get(AWI),
TD->getIntPtrType(Context),
B.getInt8PtrTy(),
TD->getIntPtrType(Context),
@@ -354,11 +431,13 @@ void llvm::EmitFWrite(Value *Ptr, Value *Size, Value *File,
if (const Function *Fn = dyn_cast<Function>(F->stripPointerCasts()))
CI->setCallingConv(Fn->getCallingConv());
+ return CI;
}
SimplifyFortifiedLibCalls::~SimplifyFortifiedLibCalls() { }
-bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) {
+bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD,
+ const TargetLibraryInfo *TLI) {
// We really need TargetData for later.
if (!TD) return false;
@@ -446,7 +525,9 @@ bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) {
// string lengths for varying.
if (isFoldable(2, 1, true)) {
Value *Ret = EmitStrCpy(CI->getArgOperand(0), CI->getArgOperand(1), B, TD,
- Name.substr(2, 6));
+ TLI, Name.substr(2, 6));
+ if (!Ret)
+ return false;
replaceCall(Ret);
return true;
}
@@ -464,7 +545,10 @@ bool SimplifyFortifiedLibCalls::fold(CallInst *CI, const TargetData *TD) {
if (isFoldable(3, 2, false)) {
Value *Ret = EmitStrNCpy(CI->getArgOperand(0), CI->getArgOperand(1),
- CI->getArgOperand(2), B, TD, Name.substr(2, 7));
+ CI->getArgOperand(2), B, TD, TLI,
+ Name.substr(2, 7));
+ if (!Ret)
+ return false;
replaceCall(Ret);
return true;
}
--
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