ppc: 0.979
graphic: 0.882
architecture: 0.816
device: 0.724
network: 0.589
semantic: 0.561
vnc: 0.436
debug: 0.427
peripherals: 0.418
boot: 0.398
performance: 0.395
PID: 0.393
socket: 0.311
kernel: 0.246
permissions: 0.230
arm: 0.225
x86: 0.192
TCG: 0.182
register: 0.176
risc-v: 0.175
assembly: 0.172
hypervisor: 0.161
user-level: 0.141
mistranslation: 0.130
i386: 0.114
virtual: 0.101
files: 0.097
VMM: 0.082
KVM: 0.040
--------------------
ppc: 0.999
performance: 0.590
assembly: 0.481
TCG: 0.296
debug: 0.263
architecture: 0.084
files: 0.083
register: 0.068
semantic: 0.055
kernel: 0.032
user-level: 0.020
peripherals: 0.014
PID: 0.012
device: 0.005
virtual: 0.003
boot: 0.003
mistranslation: 0.003
graphic: 0.002
hypervisor: 0.002
network: 0.001
VMM: 0.001
permissions: 0.001
socket: 0.001
risc-v: 0.001
vnc: 0.001
arm: 0.000
KVM: 0.000
x86: 0.000
i386: 0.000

PowerPC mishandles xscmpudp instruction
Description of problem:
xscmpudp instruction is mishandled
Steps to reproduce:
1. Compile the attached program with VSX (e.g. `RUSTFLAGS=-Ctarget-feature=+vsx cargo build --target=powerpc64-unknown-linux-gnu`)
2. Run the program and expect assertions to pass.
3. See assertions fail.
Additional information:
When VSX is disabled, the `fcmpu` instruction is emitted instead (and handled properly).  See the offending program:
```
pub fn main() {
    use std::hint::black_box;
    assert!(black_box(f64::NAN)
        .clamp(black_box(0f64), black_box(0f64))
        .is_nan());
}
```