// RUN: %clang -target mipsel-unknown-linux -mnan=legacy -emit-llvm -S %s -o - | FileCheck %s // CHECK: float +nan(0x200000), float +qnan // CHECK: double +snan(0x4000000000000), double +qnan // The first line shows an unintended consequence. // __builtin_nan() creates a legacy QNAN double with an empty payload // (the first bit of the significand is clear to indicate quiet, so // the second bit of the payload is set to maintain NAN-ness). // The value is then truncated, but llvm::APFloat does not know about // the inverted quiet bit, so it sets the first bit on conversion // to indicate 'quiet' independently of the setting in clang. float f[] = { __builtin_nan(""), __builtin_nans(""), }; double d[] = { __builtin_nan(""), __builtin_nans(""), };