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Unified Diff: src/x64/assembler-x64.cc

Issue 1405453003: CTZ instruction implemented as optional operator. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Fixed a bug when bmi1=false Created 5 years, 2 months ago
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Index: src/x64/assembler-x64.cc
diff --git a/src/x64/assembler-x64.cc b/src/x64/assembler-x64.cc
index 059b576beaa42d52765c8b383762199a0a14e392..c7490cb1790ef97140e50eb55820100de6fbc8ab 100644
--- a/src/x64/assembler-x64.cc
+++ b/src/x64/assembler-x64.cc
@@ -745,6 +745,24 @@ void Assembler::bsrl(Register dst, const Operand& src) {
}
+void Assembler::bsfl(Register dst, Register src) {
+ EnsureSpace ensure_space(this);
+ emit_optional_rex_32(dst, src);
+ emit(0x0F);
+ emit(0xBC);
+ emit_modrm(dst, src);
+}
+
+
+void Assembler::bsfl(Register dst, const Operand& src) {
+ EnsureSpace ensure_space(this);
+ emit_optional_rex_32(dst, src);
+ emit(0x0F);
+ emit(0xBC);
+ emit_operand(dst, src);
+}
+
+
void Assembler::call(Label* L) {
positions_recorder()->WriteRecordedPositions();
EnsureSpace ensure_space(this);
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