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8158214: Crash with "assert(VM_Version::supports_sse4_1()) failed" if UseSSE < 4 is set

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Do not emit unsupported SSE 4.1 instructions in CRC32 intrinsic.

Reviewed-by: kvn, zmajo
This commit is contained in:
Tobias Hartmann 2016-06-02 13:19:05 +02:00
parent 35f9db149b
commit f92cc0c836
3 changed files with 47 additions and 4 deletions
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8
hotspot/src/cpu/x86/vm/macroAssembler_x86.cpp
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@ -10151,7 +10151,13 @@ void MacroAssembler::kernel_crc32(Register crc, Register buf, Register len, Regi
movdqa(xmm1, Address(buf, 0));
movdl(rax, xmm1);
xorl(crc, rax);
pinsrd(xmm1, crc, 0);
if (VM_Version::supports_sse4_1()) {
pinsrd(xmm1, crc, 0);
} else {
pinsrw(xmm1, crc, 0);
shrl(crc, 16);
pinsrw(xmm1, crc, 1);
}
addptr(buf, 16);
subl(len, 4); // len > 0
jcc(Assembler::less, L_fold_tail);