| // RUN: %clang -target mipsel-unknown-linux -mnan=legacy -emit-llvm -S %s -o - | FileCheck %s |
| // CHECK: float 0x7FFC000000000000, float 0x7FF8000000000000 |
| // CHECK: double 0x7FF4000000000000, double 0x7FF8000000000000 |
| |
| // 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(""), |
| }; |