blob: 5205bdfb6e21e398a85218bded6b47a5ef2ae86f (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
instruction: 0.557
runtime: 0.329
syscall: 0.113
aarch64: incorrect emulation of sqshrn instruction
Description of problem:
`sqshrn` instruction test fails with qemu-aarch64, but passes on real aarch64 hardware.
Steps to reproduce:
1. Build [inline_asm_tests](https://cs.android.com/android/platform/superproject/main/+/main:frameworks/libs/binary_translation/tests/inline_asm_tests/) and run with qemu-aarch64
2. Observe two failures
```
[ RUN ] Arm64InsnTest.SignedSaturatingShiftRightNarrowInt16x1
frameworks/libs/binary_translation/tests/inline_asm_tests/main_arm64.cc:6697: Failure
Expected equality of these values:
res1
Which is: 4294967188
MakeUInt128(0x94U, 0U)
Which is: 148
[ FAILED ] Arm64InsnTest.SignedSaturatingShiftRightNarrowInt16x1 (5 ms)
[ RUN ] Arm64InsnTest.SignedSaturatingRoundingShiftRightNarrowInt16x1
frameworks/libs/binary_translation/tests/inline_asm_tests/main_arm64.cc:6793: Failure
Expected equality of these values:
res3
Which is: 4294967168
MakeUInt128(0x0000000000000080ULL, 0x0000000000000000ULL)
Which is: 128
[ FAILED ] Arm64InsnTest.SignedSaturatingRoundingShiftRightNarrowInt16x1 (2 ms)
```
Additional information:
[Direct link to SignedSaturatingShiftRightNarrowInt16x1 test source](https://cs.android.com/android/platform/superproject/main/+/main:frameworks/libs/binary_translation/tests/inline_asm_tests/main_arm64.cc;l=6692;drc=4ee2c3035fa5dc0b7a48b6c6dc498296be071861)
|