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author | John Criswell <criswell@uiuc.edu> | 2005-10-27 15:54:34 +0000 |
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committer | John Criswell <criswell@uiuc.edu> | 2005-10-27 15:54:34 +0000 |
commit | a11564335749cd259d8a1391be34c1abbe302c42 (patch) | |
tree | a1f3f003c0d7a5dfc6a47944901c44182eed5d84 /lib | |
parent | fe7f046de875e41dd338163a719a32571da7ec06 (diff) | |
download | llvm-a11564335749cd259d8a1391be34c1abbe302c42.tar.gz llvm-a11564335749cd259d8a1391be34c1abbe302c42.tar.bz2 llvm-a11564335749cd259d8a1391be34c1abbe302c42.tar.xz |
Move some constant folding code shared by Analysis and Transform passes
into the LLVMAnalysis library.
This allows LLVMTranform and LLVMTransformUtils to be archives and linked
with LLVMAnalysis.a, which provides any missing definitions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24036 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r-- | lib/Analysis/ScalarEvolution.cpp | 2 | ||||
-rw-r--r-- | lib/Transforms/Utils/Local.cpp | 143 | ||||
-rw-r--r-- | lib/Transforms/Utils/Makefile | 1 |
3 files changed, 3 insertions, 143 deletions
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp index 77f5e3872f..120b9f5e48 100644 --- a/lib/Analysis/ScalarEvolution.cpp +++ b/lib/Analysis/ScalarEvolution.cpp @@ -64,10 +64,10 @@ #include "llvm/DerivedTypes.h" #include "llvm/GlobalVariable.h" #include "llvm/Instructions.h" +#include "llvm/Analysis/ConstantFolding.h" #include "llvm/Analysis/LoopInfo.h" #include "llvm/Assembly/Writer.h" #include "llvm/Transforms/Scalar.h" -#include "llvm/Transforms/Utils/Local.h" #include "llvm/Support/CFG.h" #include "llvm/Support/ConstantRange.h" #include "llvm/Support/InstIterator.h" diff --git a/lib/Transforms/Utils/Local.cpp b/lib/Transforms/Utils/Local.cpp index a9cfcc0a92..d82b278f40 100644 --- a/lib/Transforms/Utils/Local.cpp +++ b/lib/Transforms/Utils/Local.cpp @@ -12,6 +12,7 @@ // //===----------------------------------------------------------------------===// +#include "llvm/Analysis/ConstantFolding.h" #include "llvm/Transforms/Utils/Local.h" #include "llvm/Constants.h" #include "llvm/DerivedTypes.h" @@ -234,148 +235,6 @@ bool llvm::ConstantFoldTerminator(BasicBlock *BB) { return false; } -/// canConstantFoldCallTo - Return true if its even possible to fold a call to -/// the specified function. -bool llvm::canConstantFoldCallTo(Function *F) { - const std::string &Name = F->getName(); - - switch (F->getIntrinsicID()) { - case Intrinsic::isunordered: - case Intrinsic::sqrt: - return true; - default: break; - } - - switch (Name[0]) - { - case 'a': - return Name == "acos" || Name == "asin" || Name == "atan" || - Name == "atan2"; - case 'c': - return Name == "ceil" || Name == "cos" || Name == "cosf" || - Name == "cosh"; - case 'e': - return Name == "exp"; - case 'f': - return Name == "fabs" || Name == "fmod" || Name == "floor"; - case 'l': - return Name == "log" || Name == "log10"; - case 'p': - return Name == "pow"; - case 's': - return Name == "sin" || Name == "sinh" || Name == "sqrt"; - case 't': - return Name == "tan" || Name == "tanh"; - default: - return false; - } -} - -static Constant *ConstantFoldFP(double (*NativeFP)(double), double V, - const Type *Ty) { - errno = 0; - V = NativeFP(V); - if (errno == 0) - return ConstantFP::get(Ty, V); - return 0; -} - -/// ConstantFoldCall - Attempt to constant fold a call to the specified function -/// with the specified arguments, returning null if unsuccessful. -Constant *llvm::ConstantFoldCall(Function *F, - const std::vector<Constant*> &Operands) { - const std::string &Name = F->getName(); - const Type *Ty = F->getReturnType(); - - if (Operands.size() == 1) { - if (ConstantFP *Op = dyn_cast<ConstantFP>(Operands[0])) { - double V = Op->getValue(); - switch (Name[0]) - { - case 'a': - if (Name == "acos") - return ConstantFoldFP(acos, V, Ty); - else if (Name == "asin") - return ConstantFoldFP(asin, V, Ty); - else if (Name == "atan") - return ConstantFP::get(Ty, atan(V)); - break; - case 'c': - if (Name == "ceil") - return ConstantFoldFP(ceil, V, Ty); - else if (Name == "cos") - return ConstantFP::get(Ty, cos(V)); - else if (Name == "cosh") - return ConstantFP::get(Ty, cosh(V)); - break; - case 'e': - if (Name == "exp") - return ConstantFP::get(Ty, exp(V)); - break; - case 'f': - if (Name == "fabs") - return ConstantFP::get(Ty, fabs(V)); - else if (Name == "floor") - return ConstantFoldFP(floor, V, Ty); - break; - case 'l': - if (Name == "log" && V > 0) - return ConstantFP::get(Ty, log(V)); - else if (Name == "log10" && V > 0) - return ConstantFoldFP(log10, V, Ty); - else if (Name == "llvm.sqrt") { - if (V >= -0.0) - return ConstantFP::get(Ty, sqrt(V)); - else // Undefined - return ConstantFP::get(Ty, 0.0); - } - break; - case 's': - if (Name == "sin") - return ConstantFP::get(Ty, sin(V)); - else if (Name == "sinh") - return ConstantFP::get(Ty, sinh(V)); - else if (Name == "sqrt" && V >= 0) - return ConstantFP::get(Ty, sqrt(V)); - break; - case 't': - if (Name == "tan") - return ConstantFP::get(Ty, tan(V)); - else if (Name == "tanh") - return ConstantFP::get(Ty, tanh(V)); - break; - default: - break; - } - } - } else if (Operands.size() == 2) { - if (ConstantFP *Op1 = dyn_cast<ConstantFP>(Operands[0])) { - double Op1V = Op1->getValue(); - if (ConstantFP *Op2 = dyn_cast<ConstantFP>(Operands[1])) { - double Op2V = Op2->getValue(); - - if (Name == "llvm.isunordered") - return ConstantBool::get(IsNAN(Op1V) || IsNAN(Op2V)); - else - if (Name == "pow") { - errno = 0; - double V = pow(Op1V, Op2V); - if (errno == 0) - return ConstantFP::get(Ty, V); - } else if (Name == "fmod") { - errno = 0; - double V = fmod(Op1V, Op2V); - if (errno == 0) - return ConstantFP::get(Ty, V); - } else if (Name == "atan2") - return ConstantFP::get(Ty, atan2(Op1V,Op2V)); - } - } - } - return 0; -} - - /// ConstantFoldLoadThroughGEPConstantExpr - Given a constant and a /// getelementptr constantexpr, return the constant value being addressed by the /// constant expression, or null if something is funny and we can't decide. diff --git a/lib/Transforms/Utils/Makefile b/lib/Transforms/Utils/Makefile index a0c49bd9df..26fc4261f1 100644 --- a/lib/Transforms/Utils/Makefile +++ b/lib/Transforms/Utils/Makefile @@ -9,6 +9,7 @@ LEVEL = ../../.. LIBRARYNAME = LLVMTransformUtils +BUILD_ARCHIVE = 1 include $(LEVEL)/Makefile.common |