Reland "Handle non-power-of-2 divisors in division-like operations".

src/x64/assembler-x64.cc

Index: src/x64/assembler-x64.cc
diff --git a/src/x64/assembler-x64.cc b/src/x64/assembler-x64.cc
index 63f0533cd11395f14049e328174bd3c89e8c0b25..8ca37d4eaf2e4e6c69454c327dfdbac544905cf6 100644
--- a/src/x64/assembler-x64.cc
+++ b/src/x64/assembler-x64.cc
@@ -1065,6 +1065,14 @@ void Assembler::imul(Register dst, Register src, Immediate imm) {
 }
 
 
+void Assembler::imull(Register src) {
+  EnsureSpace ensure_space(this);
+  emit_optional_rex_32(src);
+  emit(0xF7);
+  emit_modrm(0x5, src);
+}
+
+
 void Assembler::imull(Register dst, Register src) {
   EnsureSpace ensure_space(this);
   emit_optional_rex_32(dst, src);