OpenJDK / amber / amber
changeset 56272:21925121a917
8220656: ARM32: -XX:MaxVectorSize=16 makes SIGILL
Reviewed-by: dholmes, dlong
| author | bulasevich |
|---|---|
| date | Fri, 17 May 2019 03:01:21 -0400 |
| parents | b88bcaa94c10 |
| children | 6a6935abebe8 |
| files | src/hotspot/cpu/arm/vm_version_arm_32.cpp |
| diffstat | 1 files changed, 6 insertions(+), 4 deletions(-) [+] |
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--- a/src/hotspot/cpu/arm/vm_version_arm_32.cpp Thu May 16 13:21:41 2019 +0200 +++ b/src/hotspot/cpu/arm/vm_version_arm_32.cpp Fri May 17 03:01:21 2019 -0400 @@ -300,10 +300,12 @@ // 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