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8220656: ARM32: -XX:MaxVectorSize=16 makes SIGILL

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Reviewed-by: dholmes, dlong
This commit is contained in:
Boris Ulasevich 2019-05-17 03:01:21 -04:00
parent fd58060179
commit cb983d1bd7
1 changed files with 6 additions and 4 deletions

10
src/hotspot/cpu/arm/vm_version_arm_32.cpp

@ -300,10 +300,12 @@ void VM_Version::initialize() {
// SIMD/NEON can use 16, but default is 8 because currently
// larger than 8 will disable instruction scheduling
FLAG_SET_DEFAULT(MaxVectorSize, 8);
}
if (MaxVectorSize > 16) {
FLAG_SET_DEFAULT(MaxVectorSize, 8);
} else {
int max_vector_size = has_simd() ? 16 : 8;
if (MaxVectorSize > max_vector_size) {
warning("MaxVectorSize must be at most %i on this platform", max_vector_size);
FLAG_SET_DEFAULT(MaxVectorSize, max_vector_size);
}
}
#endif