1.1 --- a/src/cpu/x86/vm/macroAssembler_x86.cpp Thu May 07 19:37:47 2015 -0700
1.2 +++ b/src/cpu/x86/vm/macroAssembler_x86.cpp Fri Apr 17 17:39:19 2015 -0700
1.3 @@ -6690,7 +6690,7 @@
1.4 subl(cnt2, stride2);
1.5 jccb(Assembler::notZero, COMPARE_WIDE_VECTORS_LOOP);
1.6 // clean upper bits of YMM registers
1.7 - vzeroupper();
1.8 + vpxor(vec1, vec1);
1.9
1.10 // compare wide vectors tail
1.11 bind(COMPARE_WIDE_TAIL);
1.12 @@ -6705,7 +6705,7 @@
1.13 // Identifies the mismatching (higher or lower)16-bytes in the 32-byte vectors.
1.14 bind(VECTOR_NOT_EQUAL);
1.15 // clean upper bits of YMM registers
1.16 - vzeroupper();
1.17 + vpxor(vec1, vec1);
1.18 lea(str1, Address(str1, result, scale));
1.19 lea(str2, Address(str2, result, scale));
1.20 jmp(COMPARE_16_CHARS);
1.21 @@ -6964,7 +6964,8 @@
1.22 bind(DONE);
1.23 if (UseAVX >= 2) {
1.24 // clean upper bits of YMM registers
1.25 - vzeroupper();
1.26 + vpxor(vec1, vec1);
1.27 + vpxor(vec2, vec2);
1.28 }
1.29 }
1.30
1.31 @@ -7098,7 +7099,8 @@
1.32
1.33 BIND(L_check_fill_8_bytes);
1.34 // clean upper bits of YMM registers
1.35 - vzeroupper();
1.36 + movdl(xtmp, value);
1.37 + pshufd(xtmp, xtmp, 0);
1.38 } else {
1.39 // Fill 32-byte chunks
1.40 pshufd(xtmp, xtmp, 0);
1.41 @@ -7261,7 +7263,11 @@
1.42 bind(L_copy_16_chars_exit);
1.43 if (UseAVX >= 2) {
1.44 // clean upper bits of YMM registers
1.45 - vzeroupper();
1.46 + vpxor(tmp2Reg, tmp2Reg);
1.47 + vpxor(tmp3Reg, tmp3Reg);
1.48 + vpxor(tmp4Reg, tmp4Reg);
1.49 + movdl(tmp1Reg, tmp5);
1.50 + pshufd(tmp1Reg, tmp1Reg, 0);
1.51 }
1.52 subptr(len, 8);
1.53 jccb(Assembler::greater, L_copy_8_chars_exit);
