MIPS32: Fix GenerateVirtualCall in the presence of intrinsics

Fix GenerateVirtualCall like it is done in the
I0ed88a48b313a8d28bc39fae40631123aadb13ef for all other architectures.

Test: mma -j2 test-art-target-run-test-optimizing on CI20
Change-Id: Ie55c62701b20c4f40badc95563b2aef9e83807de

1 files changed, 8 insertions, 4 deletions

diff --git a/compiler/optimizing/code_generator_mips.cc b/compiler/optimizing/code_generator_mips.cc
index 5c0ca85c78..2bd9339490 100644
--- a/compiler/optimizing/code_generator_mips.cc
+++ b/compiler/optimizing/code_generator_mips.cc
@@ -4504,8 +4504,13 @@ void InstructionCodeGeneratorMIPS::VisitInvokeStaticOrDirect(HInvokeStaticOrDire
 }
 
 void CodeGeneratorMIPS::GenerateVirtualCall(HInvokeVirtual* invoke, Location temp_location) {
-  LocationSummary* locations = invoke->GetLocations();
-  Location receiver = locations->InAt(0);
+  // Use the calling convention instead of the location of the receiver, as
+  // intrinsics may have put the receiver in a different register. In the intrinsics
+  // slow path, the arguments have been moved to the right place, so here we are
+  // guaranteed that the receiver is the first register of the calling convention.
+  InvokeDexCallingConvention calling_convention;
+  Register receiver = calling_convention.GetRegisterAt(0);
+
   Register temp = temp_location.AsRegister<Register>();
   size_t method_offset = mirror::Class::EmbeddedVTableEntryOffset(
       invoke->GetVTableIndex(), kMipsPointerSize).SizeValue();
@@ -4513,8 +4518,7 @@ void CodeGeneratorMIPS::GenerateVirtualCall(HInvokeVirtual* invoke, Location tem
   Offset entry_point = ArtMethod::EntryPointFromQuickCompiledCodeOffset(kMipsPointerSize);
 
   // temp = object->GetClass();
-  DCHECK(receiver.IsRegister());
-  __ LoadFromOffset(kLoadWord, temp, receiver.AsRegister<Register>(), class_offset);
+  __ LoadFromOffset(kLoadWord, temp, receiver, class_offset);
   MaybeRecordImplicitNullCheck(invoke);
   // temp = temp->GetMethodAt(method_offset);
   __ LoadFromOffset(kLoadWord, temp, temp, method_offset);