Introduce more compact ReadBarrierMark slow-paths.
Replace entry point ReadBarrierMark with 32
ReadBarrierMarkRegX entry points, using register
number X as input and output (instead of the standard
runtime calling convention) to save two moves in Baker's
read barrier mark slow-path code.
Test: ART host and target (ARM, ARM64) tests.
Bug: 29506760
Bug: 12687968
Change-Id: I73cfb82831cf040b8b018e984163c865cc44ed87
diff --git a/runtime/arch/mips64/entrypoints_init_mips64.cc b/runtime/arch/mips64/entrypoints_init_mips64.cc
index 030c127..b19aa01 100644
--- a/runtime/arch/mips64/entrypoints_init_mips64.cc
+++ b/runtime/arch/mips64/entrypoints_init_mips64.cc
@@ -97,7 +97,40 @@
// Read barrier.
qpoints->pReadBarrierJni = ReadBarrierJni;
- qpoints->pReadBarrierMark = artReadBarrierMark;
+ // Read barriers (and these entry points in particular) are not
+ // supported in the compiler on MIPS64.
+ qpoints->pReadBarrierMarkReg00 = nullptr;
+ qpoints->pReadBarrierMarkReg01 = nullptr;
+ qpoints->pReadBarrierMarkReg02 = nullptr;
+ qpoints->pReadBarrierMarkReg03 = nullptr;
+ qpoints->pReadBarrierMarkReg04 = nullptr;
+ qpoints->pReadBarrierMarkReg05 = nullptr;
+ qpoints->pReadBarrierMarkReg06 = nullptr;
+ qpoints->pReadBarrierMarkReg07 = nullptr;
+ qpoints->pReadBarrierMarkReg08 = nullptr;
+ qpoints->pReadBarrierMarkReg09 = nullptr;
+ qpoints->pReadBarrierMarkReg10 = nullptr;
+ qpoints->pReadBarrierMarkReg11 = nullptr;
+ qpoints->pReadBarrierMarkReg12 = nullptr;
+ qpoints->pReadBarrierMarkReg13 = nullptr;
+ qpoints->pReadBarrierMarkReg14 = nullptr;
+ qpoints->pReadBarrierMarkReg15 = nullptr;
+ qpoints->pReadBarrierMarkReg16 = nullptr;
+ qpoints->pReadBarrierMarkReg17 = nullptr;
+ qpoints->pReadBarrierMarkReg18 = nullptr;
+ qpoints->pReadBarrierMarkReg19 = nullptr;
+ qpoints->pReadBarrierMarkReg20 = nullptr;
+ qpoints->pReadBarrierMarkReg21 = nullptr;
+ qpoints->pReadBarrierMarkReg22 = nullptr;
+ qpoints->pReadBarrierMarkReg23 = nullptr;
+ qpoints->pReadBarrierMarkReg24 = nullptr;
+ qpoints->pReadBarrierMarkReg25 = nullptr;
+ qpoints->pReadBarrierMarkReg26 = nullptr;
+ qpoints->pReadBarrierMarkReg27 = nullptr;
+ qpoints->pReadBarrierMarkReg28 = nullptr;
+ qpoints->pReadBarrierMarkReg29 = nullptr;
+ qpoints->pReadBarrierMarkReg30 = nullptr;
+ qpoints->pReadBarrierMarkReg31 = nullptr;
qpoints->pReadBarrierSlow = artReadBarrierSlow;
qpoints->pReadBarrierForRootSlow = artReadBarrierForRootSlow;
};