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8139454: java/lang/Math/WorstCaseTests.java crashes on Linux-amd64

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Emit the form of pextrw that works with sse2

Reviewed-by: iveresov, twisti
This commit is contained in:
Vivek R Deshpande 2015-10-12 16:35:40 -07:00 committed by Igor Veresov
parent 6947623b7b
commit e4f225de72
1 changed files with 2 additions and 2 deletions
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4
hotspot/src/cpu/x86/vm/assembler_x86.cpp
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@ -3048,8 +3048,8 @@ void Assembler::pextrq(Register dst, XMMRegister src, int imm8) {
void Assembler::pextrw(Register dst, XMMRegister src, int imm8) {
assert(VM_Version::supports_sse2(), "");
int encode = simd_prefix_and_encode(as_XMMRegister(dst->encoding()), xnoreg, src, VEX_SIMD_66, /* no_mask_reg */ true,
VEX_OPCODE_0F_3A, /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_bw);
emit_int8(0x15);
VEX_OPCODE_0F, /* rex_w */ false, AVX_128bit, /* legacy_mode */ _legacy_mode_bw);
emit_int8((unsigned char)0xC5);
emit_int8((unsigned char)(0xC0 | encode));
emit_int8(imm8);
}