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use ArgOperand API

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106731 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gabor Greif 2010-06-24 10:42:46 +00:00
parent d883a9d1ed
commit aee5dc1939
1 changed files with 75 additions and 75 deletions
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148
lib/Transforms/Scalar/SimplifyLibCalls.cpp
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@ -129,8 +129,8 @@ struct StrCatOpt : public LibCallOptimization {
return 0;
// Extract some information from the instruction
Value *Dst = CI->getOperand(1);
Value *Src = CI->getOperand(2);
Value *Dst = CI->getArgOperand(0);
Value *Src = CI->getArgOperand(1);
// See if we can get the length of the input string.
uint64_t Len = GetStringLength(Src);
@ -181,12 +181,12 @@ struct StrNCatOpt : public StrCatOpt {
return 0;
// Extract some information from the instruction
Value *Dst = CI->getOperand(1);
Value *Src = CI->getOperand(2);
Value *Dst = CI->getArgOperand(0);
Value *Src = CI->getArgOperand(1);
uint64_t Len;
// We don't do anything if length is not constant
if (ConstantInt *LengthArg = dyn_cast<ConstantInt>(CI->getOperand(3)))
if (ConstantInt *LengthArg = dyn_cast<ConstantInt>(CI->getArgOperand(2)))
Len = LengthArg->getZExtValue();
else
return 0;
@ -226,11 +226,11 @@ struct StrChrOpt : public LibCallOptimization {
FT->getParamType(0) != FT->getReturnType())
return 0;
Value *SrcStr = CI->getOperand(1);
Value *SrcStr = CI->getArgOperand(0);
// If the second operand is non-constant, see if we can compute the length
// of the input string and turn this into memchr.
ConstantInt *CharC = dyn_cast<ConstantInt>(CI->getOperand(2));
ConstantInt *CharC = dyn_cast<ConstantInt>(CI->getArgOperand(1));
if (CharC == 0) {
// These optimizations require TargetData.
if (!TD) return 0;
@ -239,7 +239,7 @@ struct StrChrOpt : public LibCallOptimization {
if (Len == 0 || !FT->getParamType(1)->isIntegerTy(32))// memchr needs i32.
return 0;
return EmitMemChr(SrcStr, CI->getOperand(2), // include nul.
return EmitMemChr(SrcStr, CI->getArgOperand(1), // include nul.
ConstantInt::get(TD->getIntPtrType(*Context), Len),
B, TD);
}
@ -284,7 +284,7 @@ struct StrCmpOpt : public LibCallOptimization {
FT->getParamType(0) != Type::getInt8PtrTy(*Context))
return 0;
Value *Str1P = CI->getOperand(1), *Str2P = CI->getOperand(2);
Value *Str1P = CI->getArgOperand(0), *Str2P = CI->getArgOperand(1);
if (Str1P == Str2P) // strcmp(x,x) -> 0
return ConstantInt::get(CI->getType(), 0);
@ -333,13 +333,13 @@ struct StrNCmpOpt : public LibCallOptimization {
!FT->getParamType(2)->isIntegerTy())
return 0;
Value *Str1P = CI->getOperand(1), *Str2P = CI->getOperand(2);
Value *Str1P = CI->getArgOperand(0), *Str2P = CI->getArgOperand(1);
if (Str1P == Str2P) // strncmp(x,x,n) -> 0
return ConstantInt::get(CI->getType(), 0);
// Get the length argument if it is constant.
uint64_t Length;
if (ConstantInt *LengthArg = dyn_cast<ConstantInt>(CI->getOperand(3)))
if (ConstantInt *LengthArg = dyn_cast<ConstantInt>(CI->getArgOperand(2)))
Length = LengthArg->getZExtValue();
else
return 0;
@ -387,7 +387,7 @@ struct StrCpyOpt : public LibCallOptimization {
FT->getParamType(0) != Type::getInt8PtrTy(*Context))
return 0;
Value *Dst = CI->getOperand(1), *Src = CI->getOperand(2);
Value *Dst = CI->getArgOperand(0), *Src = CI->getArgOperand(1);
if (Dst == Src) // strcpy(x,x) -> x
return Src;
@ -403,7 +403,7 @@ struct StrCpyOpt : public LibCallOptimization {
if (OptChkCall)
EmitMemCpyChk(Dst, Src,
ConstantInt::get(TD->getIntPtrType(*Context), Len),
CI->getOperand(3), B, TD);
CI->getArgOperand(2), B, TD);
else
EmitMemCpy(Dst, Src,
ConstantInt::get(TD->getIntPtrType(*Context), Len),
@ -424,9 +424,9 @@ struct StrNCpyOpt : public LibCallOptimization {
!FT->getParamType(2)->isIntegerTy())
return 0;
Value *Dst = CI->getOperand(1);
Value *Src = CI->getOperand(2);
Value *LenOp = CI->getOperand(3);
Value *Dst = CI->getArgOperand(0);
Value *Src = CI->getArgOperand(1);
Value *LenOp = CI->getArgOperand(2);
// See if we can get the length of the input string.
uint64_t SrcLen = GetStringLength(Src);
@ -474,7 +474,7 @@ struct StrLenOpt : public LibCallOptimization {
!FT->getReturnType()->isIntegerTy())
return 0;
Value *Src = CI->getOperand(1);
Value *Src = CI->getArgOperand(0);
// Constant folding: strlen("xyz") -> 3
if (uint64_t Len = GetStringLength(Src))
@ -499,7 +499,7 @@ struct StrToOpt : public LibCallOptimization {
!FT->getParamType(1)->isPointerTy())
return 0;
Value *EndPtr = CI->getOperand(2);
Value *EndPtr = CI->getArgOperand(1);
if (isa<ConstantPointerNull>(EndPtr)) {
CI->setOnlyReadsMemory();
CI->addAttribute(1, Attribute::NoCapture);
@ -522,8 +522,8 @@ struct StrStrOpt : public LibCallOptimization {
return 0;
// fold strstr(x, x) -> x.
if (CI->getOperand(1) == CI->getOperand(2))
return B.CreateBitCast(CI->getOperand(1), CI->getType());
if (CI->getArgOperand(0) == CI->getArgOperand(1))
return B.CreateBitCast(CI->getArgOperand(0), CI->getType());
// fold strstr(a, b) == a -> strncmp(a, b, strlen(b)) == 0
if (TD && IsOnlyUsedInEqualityComparison(CI, CI->getOperand(1))) {
@ -544,12 +544,12 @@ struct StrStrOpt : public LibCallOptimization {
// See if either input string is a constant string.
std::string SearchStr, ToFindStr;
bool HasStr1 = GetConstantStringInfo(CI->getOperand(1), SearchStr);
bool HasStr2 = GetConstantStringInfo(CI->getOperand(2), ToFindStr);
bool HasStr1 = GetConstantStringInfo(CI->getArgOperand(0), SearchStr);
bool HasStr2 = GetConstantStringInfo(CI->getArgOperand(1), ToFindStr);
// fold strstr(x, "") -> x.
if (HasStr2 && ToFindStr.empty())
return B.CreateBitCast(CI->getOperand(1), CI->getType());
return B.CreateBitCast(CI->getArgOperand(0), CI->getType());
// If both strings are known, constant fold it.
if (HasStr1 && HasStr2) {
@ -559,14 +559,14 @@ struct StrStrOpt : public LibCallOptimization {
return Constant::getNullValue(CI->getType());
// strstr("abcd", "bc") -> gep((char*)"abcd", 1)
Value *Result = CastToCStr(CI->getOperand(1), B);
Value *Result = CastToCStr(CI->getArgOperand(0), B);
Result = B.CreateConstInBoundsGEP1_64(Result, Offset, "strstr");
return B.CreateBitCast(Result, CI->getType());
}
// fold strstr(x, "y") -> strchr(x, 'y').
if (HasStr2 && ToFindStr.size() == 1)
return B.CreateBitCast(EmitStrChr(CI->getOperand(1), ToFindStr[0], B, TD),
return B.CreateBitCast(EmitStrChr(CI->getArgOperand(0), ToFindStr[0], B, TD),
CI->getType());
return 0;
}
@ -584,13 +584,13 @@ struct MemCmpOpt : public LibCallOptimization {
!FT->getReturnType()->isIntegerTy(32))
return 0;
Value *LHS = CI->getOperand(1), *RHS = CI->getOperand(2);
Value *LHS = CI->getArgOperand(0), *RHS = CI->getArgOperand(1);
if (LHS == RHS) // memcmp(s,s,x) -> 0
return Constant::getNullValue(CI->getType());
// Make sure we have a constant length.
ConstantInt *LenC = dyn_cast<ConstantInt>(CI->getOperand(3));
ConstantInt *LenC = dyn_cast<ConstantInt>(CI->getArgOperand(2));
if (!LenC) return 0;
uint64_t Len = LenC->getZExtValue();
@ -637,9 +637,9 @@ struct MemCpyOpt : public LibCallOptimization {
return 0;
// memcpy(x, y, n) -> llvm.memcpy(x, y, n, 1)
EmitMemCpy(CI->getOperand(1), CI->getOperand(2),
CI->getOperand(3), 1, false, B, TD);
return CI->getOperand(1);
EmitMemCpy(CI->getArgOperand(0), CI->getArgOperand(1),
CI->getArgOperand(2), 1, false, B, TD);
return CI->getArgOperand(0);
}
};
@ -659,9 +659,9 @@ struct MemMoveOpt : public LibCallOptimization {
return 0;
// memmove(x, y, n) -> llvm.memmove(x, y, n, 1)
EmitMemMove(CI->getOperand(1), CI->getOperand(2),
CI->getOperand(3), 1, false, B, TD);
return CI->getOperand(1);
EmitMemMove(CI->getArgOperand(0), CI->getArgOperand(1),
CI->getArgOperand(2), 1, false, B, TD);
return CI->getArgOperand(0);
}
};
@ -681,10 +681,10 @@ struct MemSetOpt : public LibCallOptimization {
return 0;
// memset(p, v, n) -> llvm.memset(p, v, n, 1)
Value *Val = B.CreateIntCast(CI->getOperand(2), Type::getInt8Ty(*Context),
Value *Val = B.CreateIntCast(CI->getArgOperand(1), Type::getInt8Ty(*Context),
false);
EmitMemSet(CI->getOperand(1), Val, CI->getOperand(3), false, B, TD);
return CI->getOperand(1);
EmitMemSet(CI->getArgOperand(0), Val, CI->getArgOperand(2), false, B, TD);
return CI->getArgOperand(0);
}
};
@ -705,7 +705,7 @@ struct PowOpt : public LibCallOptimization {
!FT->getParamType(0)->isFloatingPointTy())
return 0;
Value *Op1 = CI->getOperand(1), *Op2 = CI->getOperand(2);
Value *Op1 = CI->getArgOperand(0), *Op2 = CI->getArgOperand(1);
if (ConstantFP *Op1C = dyn_cast<ConstantFP>(Op1)) {
if (Op1C->isExactlyValue(1.0)) // pow(1.0, x) -> 1.0
return Op1C;
@ -759,7 +759,7 @@ struct Exp2Opt : public LibCallOptimization {
!FT->getParamType(0)->isFloatingPointTy())
return 0;
Value *Op = CI->getOperand(1);
Value *Op = CI->getArgOperand(0);
// Turn exp2(sitofp(x)) -> ldexp(1.0, sext(x)) if sizeof(x) <= 32
// Turn exp2(uitofp(x)) -> ldexp(1.0, zext(x)) if sizeof(x) < 32
Value *LdExpArg = 0;
@ -811,7 +811,7 @@ struct UnaryDoubleFPOpt : public LibCallOptimization {
return 0;
// If this is something like 'floor((double)floatval)', convert to floorf.
FPExtInst *Cast = dyn_cast<FPExtInst>(CI->getOperand(1));
FPExtInst *Cast = dyn_cast<FPExtInst>(CI->getArgOperand(0));
if (Cast == 0 || !Cast->getOperand(0)->getType()->isFloatTy())
return 0;
@ -840,7 +840,7 @@ struct FFSOpt : public LibCallOptimization {
!FT->getParamType(0)->isIntegerTy())
return 0;
Value *Op = CI->getOperand(1);
Value *Op = CI->getArgOperand(0);
// Constant fold.
if (ConstantInt *CI = dyn_cast<ConstantInt>(Op)) {
@ -876,7 +876,7 @@ struct IsDigitOpt : public LibCallOptimization {
return 0;
// isdigit(c) -> (c-'0') <u 10
Value *Op = CI->getOperand(1);
Value *Op = CI->getArgOperand(0);
Op = B.CreateSub(Op, ConstantInt::get(Type::getInt32Ty(*Context), '0'),
"isdigittmp");
Op = B.CreateICmpULT(Op, ConstantInt::get(Type::getInt32Ty(*Context), 10),
@ -897,7 +897,7 @@ struct IsAsciiOpt : public LibCallOptimization {
return 0;
// isascii(c) -> c <u 128
Value *Op = CI->getOperand(1);
Value *Op = CI->getArgOperand(0);
Op = B.CreateICmpULT(Op, ConstantInt::get(Type::getInt32Ty(*Context), 128),
"isascii");
return B.CreateZExt(Op, CI->getType());
@ -916,7 +916,7 @@ struct AbsOpt : public LibCallOptimization {
return 0;
// abs(x) -> x >s -1 ? x : -x
Value *Op = CI->getOperand(1);
Value *Op = CI->getArgOperand(0);
Value *Pos = B.CreateICmpSGT(Op,
Constant::getAllOnesValue(Op->getType()),
"ispos");
@ -938,7 +938,7 @@ struct ToAsciiOpt : public LibCallOptimization {
return 0;
// isascii(c) -> c & 0x7f
return B.CreateAnd(CI->getOperand(1),
return B.CreateAnd(CI->getArgOperand(0),
ConstantInt::get(CI->getType(),0x7F));
}
};
@ -961,7 +961,7 @@ struct PrintFOpt : public LibCallOptimization {
// Check for a fixed format string.
std::string FormatStr;
if (!GetConstantStringInfo(CI->getOperand(1), FormatStr))
if (!GetConstantStringInfo(CI->getArgOperand(0), FormatStr))
return 0;
// Empty format string -> noop.
@ -993,10 +993,10 @@ struct PrintFOpt : public LibCallOptimization {
}
// Optimize specific format strings.
// printf("%c", chr) --> putchar(*(i8*)dst)
// printf("%c", chr) --> putchar(chr)
if (FormatStr == "%c" && CI->getNumOperands() > 2 &&
CI->getOperand(2)->getType()->isIntegerTy()) {
Value *Res = EmitPutChar(CI->getOperand(2), B, TD);
CI->getArgOperand(1)->getType()->isIntegerTy()) {
Value *Res = EmitPutChar(CI->getArgOperand(1), B, TD);
if (CI->use_empty()) return CI;
return B.CreateIntCast(Res, CI->getType(), true);
@ -1004,9 +1004,9 @@ struct PrintFOpt : public LibCallOptimization {
// printf("%s\n", str) --> puts(str)
if (FormatStr == "%s\n" && CI->getNumOperands() > 2 &&
CI->getOperand(2)->getType()->isPointerTy() &&
CI->getArgOperand(1)->getType()->isPointerTy() &&
CI->use_empty()) {
EmitPutS(CI->getOperand(2), B, TD);
EmitPutS(CI->getArgOperand(1), B, TD);
return CI;
}
return 0;
@ -1027,7 +1027,7 @@ struct SPrintFOpt : public LibCallOptimization {
// Check for a fixed format string.
std::string FormatStr;
if (!GetConstantStringInfo(CI->getOperand(2), FormatStr))
if (!GetConstantStringInfo(CI->getArgOperand(1), FormatStr))
return 0;
// If we just have a format string (nothing else crazy) transform it.
@ -1042,7 +1042,7 @@ struct SPrintFOpt : public LibCallOptimization {
if (!TD) return 0;
// sprintf(str, fmt) -> llvm.memcpy(str, fmt, strlen(fmt)+1, 1)
EmitMemCpy(CI->getOperand(1), CI->getOperand(2), // Copy the nul byte.
EmitMemCpy(CI->getArgOperand(0), CI->getArgOperand(1), // Copy the nul byte.
ConstantInt::get(TD->getIntPtrType(*Context),
FormatStr.size()+1), 1, false, B, TD);
return ConstantInt::get(CI->getType(), FormatStr.size());
@ -1056,10 +1056,10 @@ struct SPrintFOpt : public LibCallOptimization {
// Decode the second character of the format string.
if (FormatStr[1] == 'c') {
// sprintf(dst, "%c", chr) --> *(i8*)dst = chr; *((i8*)dst+1) = 0
if (!CI->getOperand(3)->getType()->isIntegerTy()) return 0;
Value *V = B.CreateTrunc(CI->getOperand(3),
if (!CI->getArgOperand(2)->getType()->isIntegerTy()) return 0;
Value *V = B.CreateTrunc(CI->getArgOperand(2),
Type::getInt8Ty(*Context), "char");
Value *Ptr = CastToCStr(CI->getOperand(1), B);
Value *Ptr = CastToCStr(CI->getArgOperand(0), B);
B.CreateStore(V, Ptr);
Ptr = B.CreateGEP(Ptr, ConstantInt::get(Type::getInt32Ty(*Context), 1),
"nul");
@ -1073,13 +1073,13 @@ struct SPrintFOpt : public LibCallOptimization {
if (!TD) return 0;
// sprintf(dest, "%s", str) -> llvm.memcpy(dest, str, strlen(str)+1, 1)
if (!CI->getOperand(3)->getType()->isPointerTy()) return 0;
if (!CI->getArgOperand(2)->getType()->isPointerTy()) return 0;
Value *Len = EmitStrLen(CI->getOperand(3), B, TD);
Value *Len = EmitStrLen(CI->getArgOperand(2), B, TD);
Value *IncLen = B.CreateAdd(Len,
ConstantInt::get(Len->getType(), 1),
"leninc");
EmitMemCpy(CI->getOperand(1), CI->getOperand(3), IncLen, 1, false, B, TD);
EmitMemCpy(CI->getArgOperand(0), CI->getArgOperand(2), IncLen, 1, false, B, TD);
// The sprintf result is the unincremented number of bytes in the string.
return B.CreateIntCast(Len, CI->getType(), false);
@ -1103,8 +1103,8 @@ struct FWriteOpt : public LibCallOptimization {
return 0;
// Get the element size and count.
ConstantInt *SizeC = dyn_cast<ConstantInt>(CI->getOperand(2));
ConstantInt *CountC = dyn_cast<ConstantInt>(CI->getOperand(3));
ConstantInt *SizeC = dyn_cast<ConstantInt>(CI->getArgOperand(1));
ConstantInt *CountC = dyn_cast<ConstantInt>(CI->getArgOperand(2));
if (!SizeC || !CountC) return 0;
uint64_t Bytes = SizeC->getZExtValue()*CountC->getZExtValue();
@ -1114,8 +1114,8 @@ struct FWriteOpt : public LibCallOptimization {
// If this is writing one byte, turn it into fputc.
if (Bytes == 1) { // fwrite(S,1,1,F) -> fputc(S[0],F)
Value *Char = B.CreateLoad(CastToCStr(CI->getOperand(1), B), "char");
EmitFPutC(Char, CI->getOperand(4), B, TD);
Value *Char = B.CreateLoad(CastToCStr(CI->getArgOperand(0), B), "char");
EmitFPutC(Char, CI->getArgOperand(3), B, TD);
return ConstantInt::get(CI->getType(), 1);
}
@ -1139,11 +1139,11 @@ struct FPutsOpt : public LibCallOptimization {
return 0;
// fputs(s,F) --> fwrite(s,1,strlen(s),F)
uint64_t Len = GetStringLength(CI->getOperand(1));
uint64_t Len = GetStringLength(CI->getArgOperand(0));
if (!Len) return 0;
EmitFWrite(CI->getOperand(1),
EmitFWrite(CI->getArgOperand(0),
ConstantInt::get(TD->getIntPtrType(*Context), Len-1),
CI->getOperand(2), B, TD);
CI->getArgOperand(1), B, TD);
return CI; // Known to have no uses (see above).
}
};
@ -1162,7 +1162,7 @@ struct FPrintFOpt : public LibCallOptimization {
// All the optimizations depend on the format string.
std::string FormatStr;
if (!GetConstantStringInfo(CI->getOperand(2), FormatStr))
if (!GetConstantStringInfo(CI->getArgOperand(1), FormatStr))
return 0;
// fprintf(F, "foo") --> fwrite("foo", 3, 1, F)
@ -1174,10 +1174,10 @@ struct FPrintFOpt : public LibCallOptimization {
// These optimizations require TargetData.
if (!TD) return 0;
EmitFWrite(CI->getOperand(2),
EmitFWrite(CI->getArgOperand(1),
ConstantInt::get(TD->getIntPtrType(*Context),
FormatStr.size()),
CI->getOperand(1), B, TD);
CI->getArgOperand(0), B, TD);
return ConstantInt::get(CI->getType(), FormatStr.size());
}
@ -1188,17 +1188,17 @@ struct FPrintFOpt : public LibCallOptimization {
// Decode the second character of the format string.
if (FormatStr[1] == 'c') {
// fprintf(F, "%c", chr) --> *(i8*)dst = chr
if (!CI->getOperand(3)->getType()->isIntegerTy()) return 0;
EmitFPutC(CI->getOperand(3), CI->getOperand(1), B, TD);
// fprintf(F, "%c", chr) --> fputc(chr, F)
if (!CI->getArgOperand(2)->getType()->isIntegerTy()) return 0;
EmitFPutC(CI->getArgOperand(2), CI->getArgOperand(0), B, TD);
return ConstantInt::get(CI->getType(), 1);
}
if (FormatStr[1] == 's') {
// fprintf(F, "%s", str) -> fputs(str, F)
if (!CI->getOperand(3)->getType()->isPointerTy() || !CI->use_empty())
// fprintf(F, "%s", str) --> fputs(str, F)
if (!CI->getArgOperand(2)->getType()->isPointerTy() || !CI->use_empty())
return 0;
EmitFPutS(CI->getOperand(3), CI->getOperand(1), B, TD);
EmitFPutS(CI->getArgOperand(2), CI->getArgOperand(0), B, TD);
return CI;
}
return 0;