#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/Analysis/ValueTracking.h"
+#include "llvm/Config/config.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/Operator.h"
#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/FEnv.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Target/TargetLibraryInfo.h"
#include <cerrno>
#include <cmath>
+
+#ifdef HAVE_FENV_H
+#include <fenv.h>
+#endif
+
using namespace llvm;
//===----------------------------------------------------------------------===//
// Look through ptr->int and ptr->ptr casts.
if (CE->getOpcode() == Instruction::PtrToInt ||
- CE->getOpcode() == Instruction::BitCast)
+ CE->getOpcode() == Instruction::BitCast ||
+ CE->getOpcode() == Instruction::AddrSpaceCast)
return IsConstantOffsetFromGlobal(CE->getOperand(0), GV, Offset, TD);
// i32* getelementptr ([5 x i32]* @a, i32 0, i32 5)
}
+namespace {
+/// llvm_fenv_clearexcept - Clear the floating-point exception state.
+static inline void llvm_fenv_clearexcept() {
+#if defined(HAVE_FENV_H) && HAVE_DECL_FE_ALL_EXCEPT
+ feclearexcept(FE_ALL_EXCEPT);
+#endif
+ errno = 0;
+}
+
+/// llvm_fenv_testexcept - Test if a floating-point exception was raised.
+static inline bool llvm_fenv_testexcept() {
+ int errno_val = errno;
+ if (errno_val == ERANGE || errno_val == EDOM)
+ return true;
+#if defined(HAVE_FENV_H) && HAVE_DECL_FE_ALL_EXCEPT && HAVE_DECL_FE_INEXACT
+ if (fetestexcept(FE_ALL_EXCEPT & ~FE_INEXACT))
+ return true;
+#endif
+ return false;
+}
+} // End namespace
+
static Constant *ConstantFoldFP(double (*NativeFP)(double), double V,
Type *Ty) {
- sys::llvm_fenv_clearexcept();
+ llvm_fenv_clearexcept();
V = NativeFP(V);
- if (sys::llvm_fenv_testexcept()) {
- sys::llvm_fenv_clearexcept();
+ if (llvm_fenv_testexcept()) {
+ llvm_fenv_clearexcept();
return nullptr;
}
static Constant *ConstantFoldBinaryFP(double (*NativeFP)(double, double),
double V, double W, Type *Ty) {
- sys::llvm_fenv_clearexcept();
+ llvm_fenv_clearexcept();
V = NativeFP(V, W);
- if (sys::llvm_fenv_testexcept()) {
- sys::llvm_fenv_clearexcept();
+ if (llvm_fenv_testexcept()) {
+ llvm_fenv_clearexcept();
return nullptr;
}