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author | Benjamin Kramer <benny.kra@googlemail.com> | 2014-02-04 20:27:23 +0000 |
---|---|---|
committer | Benjamin Kramer <benny.kra@googlemail.com> | 2014-02-04 20:27:23 +0000 |
commit | fb0ad6bd15076f0837bfe559c552b96fd4d9ec44 (patch) | |
tree | 4709539b0760407a96053b1a1d07cdfa47f15c3d /lib | |
parent | 767a3dca4c66dffc88c71cd8586679b1c55f22a8 (diff) | |
download | llvm-fb0ad6bd15076f0837bfe559c552b96fd4d9ec44.tar.gz llvm-fb0ad6bd15076f0837bfe559c552b96fd4d9ec44.tar.bz2 llvm-fb0ad6bd15076f0837bfe559c552b96fd4d9ec44.tar.xz |
SimplifyLibCalls: Push TLI through the exp2->ldexp transform.
For the odd case of platforms with exp2 available but not ldexp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200795 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r-- | lib/Target/TargetLibraryInfo.cpp | 5 | ||||
-rw-r--r-- | lib/Transforms/Utils/SimplifyLibCalls.cpp | 58 |
2 files changed, 34 insertions, 29 deletions
diff --git a/lib/Target/TargetLibraryInfo.cpp b/lib/Target/TargetLibraryInfo.cpp index f5ebc43eb2..46cce84859 100644 --- a/lib/Target/TargetLibraryInfo.cpp +++ b/lib/Target/TargetLibraryInfo.cpp @@ -190,6 +190,9 @@ const char* TargetLibraryInfo::StandardNames[LibFunc::NumLibFuncs] = "isdigit", "labs", "lchown", + "ldexp", + "ldexpf", + "ldexpl", "llabs", "log", "log10", @@ -432,6 +435,8 @@ static void initialize(TargetLibraryInfo &TLI, const Triple &T, TLI.setUnavailable(LibFunc::fminl); TLI.setUnavailable(LibFunc::fmodl); TLI.setUnavailable(LibFunc::frexpl); + TLI.setUnavailable(LibFunc::ldexpf); + TLI.setUnavailable(LibFunc::ldexpl); TLI.setUnavailable(LibFunc::logl); TLI.setUnavailable(LibFunc::modfl); TLI.setUnavailable(LibFunc::powl); diff --git a/lib/Transforms/Utils/SimplifyLibCalls.cpp b/lib/Transforms/Utils/SimplifyLibCalls.cpp index 8cc5453ea6..2ffd03668c 100644 --- a/lib/Transforms/Utils/SimplifyLibCalls.cpp +++ b/lib/Transforms/Utils/SimplifyLibCalls.cpp @@ -1274,37 +1274,37 @@ struct Exp2Opt : public UnsafeFPLibCallOptimization { 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; - if (SIToFPInst *OpC = dyn_cast<SIToFPInst>(Op)) { - if (OpC->getOperand(0)->getType()->getPrimitiveSizeInBits() <= 32) - LdExpArg = B.CreateSExt(OpC->getOperand(0), B.getInt32Ty()); - } else if (UIToFPInst *OpC = dyn_cast<UIToFPInst>(Op)) { - if (OpC->getOperand(0)->getType()->getPrimitiveSizeInBits() < 32) - LdExpArg = B.CreateZExt(OpC->getOperand(0), B.getInt32Ty()); - } + LibFunc::Func LdExp = LibFunc::ldexpl; + if (Op->getType()->isFloatTy()) + LdExp = LibFunc::ldexpf; + else if (Op->getType()->isDoubleTy()) + LdExp = LibFunc::ldexp; + + if (TLI->has(LdExp)) { + Value *LdExpArg = 0; + if (SIToFPInst *OpC = dyn_cast<SIToFPInst>(Op)) { + if (OpC->getOperand(0)->getType()->getPrimitiveSizeInBits() <= 32) + LdExpArg = B.CreateSExt(OpC->getOperand(0), B.getInt32Ty()); + } else if (UIToFPInst *OpC = dyn_cast<UIToFPInst>(Op)) { + if (OpC->getOperand(0)->getType()->getPrimitiveSizeInBits() < 32) + LdExpArg = B.CreateZExt(OpC->getOperand(0), B.getInt32Ty()); + } - if (LdExpArg) { - const char *Name; - if (Op->getType()->isFloatTy()) - Name = "ldexpf"; - else if (Op->getType()->isDoubleTy()) - Name = "ldexp"; - else - Name = "ldexpl"; - - Constant *One = ConstantFP::get(*Context, APFloat(1.0f)); - if (!Op->getType()->isFloatTy()) - One = ConstantExpr::getFPExtend(One, Op->getType()); - - Module *M = Caller->getParent(); - Value *Callee = M->getOrInsertFunction(Name, Op->getType(), - Op->getType(), - B.getInt32Ty(), NULL); - CallInst *CI = B.CreateCall2(Callee, One, LdExpArg); - if (const Function *F = dyn_cast<Function>(Callee->stripPointerCasts())) - CI->setCallingConv(F->getCallingConv()); + if (LdExpArg) { + Constant *One = ConstantFP::get(*Context, APFloat(1.0f)); + if (!Op->getType()->isFloatTy()) + One = ConstantExpr::getFPExtend(One, Op->getType()); - return CI; + Module *M = Caller->getParent(); + Value *Callee = + M->getOrInsertFunction(TLI->getName(LdExp), Op->getType(), + Op->getType(), B.getInt32Ty(), NULL); + CallInst *CI = B.CreateCall2(Callee, One, LdExpArg); + if (const Function *F = dyn_cast<Function>(Callee->stripPointerCasts())) + CI->setCallingConv(F->getCallingConv()); + + return CI; + } } return Ret; } |