Add intrinsics for {Short,Int,Long}.reverseBytes().
Change-Id: I34a2ec642f59fc4ff18aed59769a9e8d7e361098
diff --git a/compiler/dex/quick/gen_invoke.cc b/compiler/dex/quick/gen_invoke.cc
index 62feade..2674954 100644
--- a/compiler/dex/quick/gen_invoke.cc
+++ b/compiler/dex/quick/gen_invoke.cc
@@ -971,6 +971,29 @@
return true;
}
+bool Mir2Lir::GenInlinedReverseBytes(CallInfo* info, OpSize size) {
+ if (cu_->instruction_set == kMips) {
+ // TODO - add Mips implementation
+ return false;
+ }
+ RegLocation rl_src_i = info->args[0];
+ RegLocation rl_dest = InlineTarget(info); // result reg
+ RegLocation rl_result = EvalLoc(rl_dest, kCoreReg, true);
+ if (size == kLong) {
+ RegLocation rl_i = LoadValueWide(rl_src_i, kCoreReg);
+ OpRegReg(kOpRev, rl_result.low_reg, rl_i.high_reg);
+ OpRegReg(kOpRev, rl_result.high_reg, rl_i.low_reg);
+ StoreValueWide(rl_dest, rl_result);
+ } else {
+ DCHECK(size == kWord || size == kSignedHalf);
+ OpKind op = (size == kWord) ? kOpRev : kOpRevsh;
+ RegLocation rl_i = LoadValue(rl_src_i, kCoreReg);
+ OpRegReg(op, rl_result.low_reg, rl_i.low_reg);
+ StoreValue(rl_dest, rl_result);
+ }
+ return true;
+}
+
bool Mir2Lir::GenInlinedAbsInt(CallInfo* info) {
if (cu_->instruction_set == kMips) {
// TODO - add Mips implementation
@@ -1249,6 +1272,16 @@
if (tgt_method == "float java.lang.Float.intBitsToFloat(int)") {
return GenInlinedFloatCvt(info);
}
+ } else if (tgt_methods_declaring_class.starts_with("Ljava/lang/Integer;")) {
+ std::string tgt_method(PrettyMethod(info->index, *cu_->dex_file));
+ if (tgt_method == "int java.lang.Integer.reverseBytes(int)") {
+ return GenInlinedReverseBytes(info, kWord);
+ }
+ } else if (tgt_methods_declaring_class.starts_with("Ljava/lang/Long;")) {
+ std::string tgt_method(PrettyMethod(info->index, *cu_->dex_file));
+ if (tgt_method == "long java.lang.Long.reverseBytes(long)") {
+ return GenInlinedReverseBytes(info, kLong);
+ }
} else if (tgt_methods_declaring_class.starts_with("Ljava/lang/Math;") ||
tgt_methods_declaring_class.starts_with("Ljava/lang/StrictMath;")) {
std::string tgt_method(PrettyMethod(info->index, *cu_->dex_file));
@@ -1272,6 +1305,11 @@
tgt_method == "double java.lang.StrictMath.sqrt(double)") {
return GenInlinedSqrt(info);
}
+ } else if (tgt_methods_declaring_class.starts_with("Ljava/lang/Short;")) {
+ std::string tgt_method(PrettyMethod(info->index, *cu_->dex_file));
+ if (tgt_method == "short java.lang.Short.reverseBytes(short)") {
+ return GenInlinedReverseBytes(info, kSignedHalf);
+ }
} else if (tgt_methods_declaring_class.starts_with("Ljava/lang/String;")) {
std::string tgt_method(PrettyMethod(info->index, *cu_->dex_file));
if (tgt_method == "char java.lang.String.charAt(int)") {