MIPS32: Pass more arguments in registers.

Specifically, use A0-A3,T0-T1 for non-floats and F8-F19 for floats.

Test: booted MIPS32R2 in QEMU
Test: test-art-target-run-test-optimizing (MIPS32R2) on CI20
Test: test-art-target-gtest (MIPS32R2) on CI20
Test: booted MIPS64 (with 2nd arch MIPS32R6) in QEMU
Test: test-art-target-run-test-optimizing (MIPS32R6) in QEMU
Test: test-art-target-gtest (MIPS32R6) in QEMU
Test: test-art-host-gtest

Change-Id: Ib8b0310a109d9f3d70119c1e605e54b013e60728
diff --git a/compiler/optimizing/code_generator_mips.h b/compiler/optimizing/code_generator_mips.h
index e225d20..685e4a9 100644
--- a/compiler/optimizing/code_generator_mips.h
+++ b/compiler/optimizing/code_generator_mips.h
@@ -31,11 +31,11 @@
 // InvokeDexCallingConvention registers
 
 static constexpr Register kParameterCoreRegisters[] =
-    { A1, A2, A3 };
+    { A1, A2, A3, T0, T1 };
 static constexpr size_t kParameterCoreRegistersLength = arraysize(kParameterCoreRegisters);
 
 static constexpr FRegister kParameterFpuRegisters[] =
-    { F12, F14 };
+    { F8, F10, F12, F14, F16, F18 };
 static constexpr size_t kParameterFpuRegistersLength = arraysize(kParameterFpuRegisters);
 
 
@@ -47,7 +47,7 @@
     arraysize(kRuntimeParameterCoreRegisters);
 
 static constexpr FRegister kRuntimeParameterFpuRegisters[] =
-    { F12, F14};
+    { F12, F14 };
 static constexpr size_t kRuntimeParameterFpuRegistersLength =
     arraysize(kRuntimeParameterFpuRegisters);