// Math Library Optimizations
//===----------------------------------------------------------------------===//
+//===---------------------------------------===//
+// 'cos*' Optimizations
+
+struct CosOpt : public LibCallOptimization {
+ virtual Value *CallOptimizer(Function *Callee, CallInst *CI, IRBuilder<> &B) {
+ FunctionType *FT = Callee->getFunctionType();
+ // Just make sure this has 1 argument of FP type, which matches the
+ // result type.
+ if (FT->getNumParams() != 1 || FT->getReturnType() != FT->getParamType(0) ||
+ !FT->getParamType(0)->isFloatingPointTy())
+ return 0;
+
+ // cos(-x) -> cos(x)
+ Value *Op1 = CI->getArgOperand(0);
+ if (BinaryOperator::isFNeg(Op1)) {
+ BinaryOperator *BinExpr = cast<BinaryOperator>(Op1);
+ return B.CreateCall(Callee, BinExpr->getOperand(1), "cos");
+ }
+ return 0;
+ }
+};
+
//===---------------------------------------===//
// 'pow*' Optimizations
if (Op2C->isExactlyValue(0.5)) {
// Expand pow(x, 0.5) to (x == -infinity ? +infinity : fabs(sqrt(x))).
// This is faster than calling pow, and still handles negative zero
- // and negative infinite correctly.
+ // and negative infinity correctly.
// TODO: In fast-math mode, this could be just sqrt(x).
// TODO: In finite-only mode, this could be just fabs(sqrt(x)).
Value *Inf = ConstantFP::getInfinity(CI->getType());
StrToOpt StrTo; StrSpnOpt StrSpn; StrCSpnOpt StrCSpn; StrStrOpt StrStr;
MemCmpOpt MemCmp; MemCpyOpt MemCpy; MemMoveOpt MemMove; MemSetOpt MemSet;
// Math Library Optimizations
- PowOpt Pow; Exp2Opt Exp2; UnaryDoubleFPOpt UnaryDoubleFP;
+ CosOpt Cos; PowOpt Pow; Exp2Opt Exp2; UnaryDoubleFPOpt UnaryDoubleFP;
// Integer Optimizations
FFSOpt FFS; AbsOpt Abs; IsDigitOpt IsDigit; IsAsciiOpt IsAscii;
ToAsciiOpt ToAscii;
Optimizations["__strcpy_chk"] = &StrCpyChk;
// Math Library Optimizations
+ Optimizations["cosf"] = &Cos;
+ Optimizations["cos"] = &Cos;
+ Optimizations["cosl"] = &Cos;
Optimizations["powf"] = &Pow;
Optimizations["pow"] = &Pow;
Optimizations["powl"] = &Pow;
// * cbrt(sqrt(x)) -> pow(x,1/6)
// * cbrt(sqrt(x)) -> pow(x,1/9)
//
-// cos, cosf, cosl:
-// * cos(-x) -> cos(x)
-//
// exp, expf, expl:
// * exp(log(x)) -> x
//
--- /dev/null
+; RUN: opt < %s -simplify-libcalls -S | FileCheck %s
+
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define double @foo(double %d) nounwind readnone {
+; CHECK: @foo
+ %1 = fsub double -0.000000e+00, %d
+ %2 = call double @cos(double %1) nounwind readnone
+; CHECK: call double @cos(double %d)
+ ret double %2
+}
+
+declare double @cos(double) nounwind readnone