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8224062: Improve String index handling

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Reviewed-by: kvn, rhalade, mschoene
This commit is contained in:
Tobias Hartmann 2019-05-27 01:36:04 -07:00
parent 409113f576
commit df1acef59e
1 changed files with 3 additions and 5 deletions
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8
src/hotspot/cpu/x86/macroAssembler_x86.cpp
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@ -6350,7 +6350,7 @@ void MacroAssembler::string_indexof_char(Register str1, Register cnt1, Register
movptr(result, str1);
if (UseAVX >= 2) {
cmpl(cnt1, stride);
jcc(Assembler::less, SCAN_TO_CHAR_LOOP);
jcc(Assembler::less, SCAN_TO_CHAR);
cmpl(cnt1, 2*stride);
jcc(Assembler::less, SCAN_TO_8_CHAR_INIT);
movdl(vec1, ch);
@ -6377,10 +6377,8 @@ void MacroAssembler::string_indexof_char(Register str1, Register cnt1, Register
}
bind(SCAN_TO_8_CHAR);
cmpl(cnt1, stride);
if (UseAVX >= 2) {
jcc(Assembler::less, SCAN_TO_CHAR);
} else {
jcc(Assembler::less, SCAN_TO_CHAR_LOOP);
jcc(Assembler::less, SCAN_TO_CHAR);
if (UseAVX < 2) {
movdl(vec1, ch);
pshuflw(vec1, vec1, 0x00);
pshufd(vec1, vec1, 0);