MIPS64: java.lang.String.getChars
Test: run-test --64 --optimizing 020-string
Test: run-test --64 020-string
Test: run-test --64 --no-prebuild --optimizing 020-string
Test: run-test --64 --no-prebuild 020-string
Test: run-test --64 --optimizing 082-inline-execute
Test: run-test --64 082-inline-execute
Test: run-test --64 --no-prebuild --optimizing 082-inline-execute
Test: run-test --64 --no-prebuild 082-inline-execute
Test: mma -j2 ART_TEST_OPTIMIZING=true test-art-target-run-test
Test: mma test-art-target-gtest -j2
Test: booted MIPS64R6 emulator.
Note: All tests run against MIPS64 QEMU.
Change-Id: I48b9a87465f2516044a2e4f598cc5dce56b0d1c9
diff --git a/compiler/optimizing/intrinsics_mips64.cc b/compiler/optimizing/intrinsics_mips64.cc
index 5a99886..3022e97 100644
--- a/compiler/optimizing/intrinsics_mips64.cc
+++ b/compiler/optimizing/intrinsics_mips64.cc
@@ -1846,6 +1846,84 @@
GenIsInfinite(invoke->GetLocations(), /* is64bit */ true, GetAssembler());
}
+// void java.lang.String.getChars(int srcBegin, int srcEnd, char[] dst, int dstBegin)
+void IntrinsicLocationsBuilderMIPS64::VisitStringGetCharsNoCheck(HInvoke* invoke) {
+ LocationSummary* locations = new (arena_) LocationSummary(invoke,
+ LocationSummary::kCallOnMainOnly,
+ kIntrinsified);
+ locations->SetInAt(0, Location::RequiresRegister());
+ locations->SetInAt(1, Location::RequiresRegister());
+ locations->SetInAt(2, Location::RequiresRegister());
+ locations->SetInAt(3, Location::RequiresRegister());
+ locations->SetInAt(4, Location::RequiresRegister());
+
+ // We will call memcpy() to do the actual work. Allocate the temporary
+ // registers to use the correct input registers, and output register.
+ // memcpy() uses the normal MIPS calling conventions.
+ InvokeRuntimeCallingConvention calling_convention;
+
+ locations->AddTemp(Location::RegisterLocation(calling_convention.GetRegisterAt(0)));
+ locations->AddTemp(Location::RegisterLocation(calling_convention.GetRegisterAt(1)));
+ locations->AddTemp(Location::RegisterLocation(calling_convention.GetRegisterAt(2)));
+
+ Location outLocation = calling_convention.GetReturnLocation(Primitive::kPrimLong);
+ locations->AddTemp(Location::RegisterLocation(outLocation.AsRegister<GpuRegister>()));
+}
+
+void IntrinsicCodeGeneratorMIPS64::VisitStringGetCharsNoCheck(HInvoke* invoke) {
+ Mips64Assembler* assembler = GetAssembler();
+ LocationSummary* locations = invoke->GetLocations();
+
+ // Check assumption that sizeof(Char) is 2 (used in scaling below).
+ const size_t char_size = Primitive::ComponentSize(Primitive::kPrimChar);
+ DCHECK_EQ(char_size, 2u);
+ const size_t char_shift = Primitive::ComponentSizeShift(Primitive::kPrimChar);
+
+ GpuRegister srcObj = locations->InAt(0).AsRegister<GpuRegister>();
+ GpuRegister srcBegin = locations->InAt(1).AsRegister<GpuRegister>();
+ GpuRegister srcEnd = locations->InAt(2).AsRegister<GpuRegister>();
+ GpuRegister dstObj = locations->InAt(3).AsRegister<GpuRegister>();
+ GpuRegister dstBegin = locations->InAt(4).AsRegister<GpuRegister>();
+
+ GpuRegister dstPtr = locations->GetTemp(0).AsRegister<GpuRegister>();
+ DCHECK_EQ(dstPtr, A0);
+ GpuRegister srcPtr = locations->GetTemp(1).AsRegister<GpuRegister>();
+ DCHECK_EQ(srcPtr, A1);
+ GpuRegister numChrs = locations->GetTemp(2).AsRegister<GpuRegister>();
+ DCHECK_EQ(numChrs, A2);
+
+ GpuRegister dstReturn = locations->GetTemp(3).AsRegister<GpuRegister>();
+ DCHECK_EQ(dstReturn, V0);
+
+ Mips64Label done;
+
+ // Location of data in char array buffer.
+ const uint32_t data_offset = mirror::Array::DataOffset(char_size).Uint32Value();
+
+ // Get offset of value field within a string object.
+ const int32_t value_offset = mirror::String::ValueOffset().Int32Value();
+
+ __ Beqc(srcEnd, srcBegin, &done); // No characters to move.
+
+ // Calculate number of characters to be copied.
+ __ Dsubu(numChrs, srcEnd, srcBegin);
+
+ // Calculate destination address.
+ __ Daddiu(dstPtr, dstObj, data_offset);
+ __ Dlsa(dstPtr, dstBegin, dstPtr, char_shift);
+
+ // Calculate source address.
+ __ Daddiu(srcPtr, srcObj, value_offset);
+ __ Dlsa(srcPtr, srcBegin, srcPtr, char_shift);
+
+ // Calculate number of bytes to copy from number of characters.
+ __ Dsll(numChrs, numChrs, char_shift);
+
+ codegen_->InvokeRuntime(kQuickMemcpy, invoke, invoke->GetDexPc(), nullptr);
+
+ __ Bind(&done);
+}
+
static void GenHighestOneBit(LocationSummary* locations,
Primitive::Type type,
Mips64Assembler* assembler) {
@@ -1925,7 +2003,6 @@
}
UNIMPLEMENTED_INTRINSIC(MIPS64, ReferenceGetReferent)
-UNIMPLEMENTED_INTRINSIC(MIPS64, StringGetCharsNoCheck)
UNIMPLEMENTED_INTRINSIC(MIPS64, SystemArrayCopyChar)
UNIMPLEMENTED_INTRINSIC(MIPS64, SystemArrayCopy)