x86_64: Enable fp-reg promotion

Patch introduces 4 register XMM12-15 available for promotion of
fp virtual registers.

Change-Id: I3f89ad07fc8ae98b70f550eada09be7b693ffb67
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>
Signed-off-by: Chao-ying Fu <chao-ying.fu@intel.com>

7 files changed, 204 insertions, 58 deletions

diff --git a/runtime/arch/x86_64/asm_support_x86_64.h b/runtime/arch/x86_64/asm_support_x86_64.h
index bff8501..05d0ef8 100644
--- a/runtime/arch/x86_64/asm_support_x86_64.h
+++ b/runtime/arch/x86_64/asm_support_x86_64.h
@@ -35,9 +35,9 @@
 // Offset of field Thread::thin_lock_thread_id_ verified in InitCpu
 #define THREAD_ID_OFFSET 12
 
-#define FRAME_SIZE_SAVE_ALL_CALLEE_SAVE 64
-#define FRAME_SIZE_REFS_ONLY_CALLEE_SAVE 64
-#define FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE 176
+#define FRAME_SIZE_SAVE_ALL_CALLEE_SAVE 64 + 4*8
+#define FRAME_SIZE_REFS_ONLY_CALLEE_SAVE 64 + 4*8
+#define FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE 176 + 4*8
 
 // Expected size of a heap reference
 #define HEAP_REFERENCE_SIZE 4
diff --git a/runtime/arch/x86_64/context_x86_64.cc b/runtime/arch/x86_64/context_x86_64.cc
index e1f47ee..7699eaf 100644
--- a/runtime/arch/x86_64/context_x86_64.cc
+++ b/runtime/arch/x86_64/context_x86_64.cc
@@ -78,6 +78,18 @@ void X86_64Context::SmashCallerSaves() {
   gprs_[R9] = nullptr;
   gprs_[R10] = nullptr;
   gprs_[R11] = nullptr;
+  fprs_[XMM0] = nullptr;
+  fprs_[XMM1] = nullptr;
+  fprs_[XMM2] = nullptr;
+  fprs_[XMM3] = nullptr;
+  fprs_[XMM4] = nullptr;
+  fprs_[XMM5] = nullptr;
+  fprs_[XMM6] = nullptr;
+  fprs_[XMM7] = nullptr;
+  fprs_[XMM8] = nullptr;
+  fprs_[XMM9] = nullptr;
+  fprs_[XMM10] = nullptr;
+  fprs_[XMM11] = nullptr;
 }
 
 bool X86_64Context::SetGPR(uint32_t reg, uintptr_t value) {
@@ -102,41 +114,26 @@ bool X86_64Context::SetFPR(uint32_t reg, uintptr_t value) {
   }
 }
 
+extern "C" void art_quick_do_long_jump(uintptr_t*, uintptr_t*);
+
 void X86_64Context::DoLongJump() {
 #if defined(__x86_64__)
-  // Array of GPR values, filled from the context backward for the long jump pop. We add a slot at
-  // the top for the stack pointer that doesn't get popped in a pop-all.
-  volatile uintptr_t gprs[kNumberOfCpuRegisters + 1];
+  uintptr_t gprs[kNumberOfCpuRegisters + 1];
+  uintptr_t fprs[kNumberOfFloatRegisters];
+
   for (size_t i = 0; i < kNumberOfCpuRegisters; ++i) {
     gprs[kNumberOfCpuRegisters - i - 1] = gprs_[i] != nullptr ? *gprs_[i] : X86_64Context::kBadGprBase + i;
   }
+  for (size_t i = 0; i < kNumberOfFloatRegisters; ++i) {
+    fprs[i] = fprs_[i] != nullptr ? *fprs_[i] : X86_64Context::kBadFprBase + i;
+  }
+
   // We want to load the stack pointer one slot below so that the ret will pop eip.
   uintptr_t rsp = gprs[kNumberOfCpuRegisters - RSP - 1] - kWordSize;
   gprs[kNumberOfCpuRegisters] = rsp;
   *(reinterpret_cast<uintptr_t*>(rsp)) = rip_;
-  __asm__ __volatile__(
-      "movq %0, %%rsp\n\t"  // RSP points to gprs.
-      "popq %%r15\n\t"       // Load all registers except RSP and RIP with values in gprs.
-      "popq %%r14\n\t"
-      "popq %%r13\n\t"
-      "popq %%r12\n\t"
-      "popq %%r11\n\t"
-      "popq %%r10\n\t"
-      "popq %%r9\n\t"
-      "popq %%r8\n\t"
-      "popq %%rdi\n\t"
-      "popq %%rsi\n\t"
-      "popq %%rbp\n\t"
-      "addq $8, %%rsp\n\t"
-      "popq %%rbx\n\t"
-      "popq %%rdx\n\t"
-      "popq %%rcx\n\t"
-      "popq %%rax\n\t"
-      "popq %%rsp\n\t"      // Load stack pointer.
-      "ret\n\t"             // From higher in the stack pop rip.
-      :  // output.
-      : "g"(&gprs[0])  // input.
-      :);  // clobber.
+
+  art_quick_do_long_jump(gprs, fprs);
 #else
   UNIMPLEMENTED(FATAL);
 #endif
diff --git a/runtime/arch/x86_64/entrypoints_init_x86_64.cc b/runtime/arch/x86_64/entrypoints_init_x86_64.cc
index 609d1c6..204d52c 100644
--- a/runtime/arch/x86_64/entrypoints_init_x86_64.cc
+++ b/runtime/arch/x86_64/entrypoints_init_x86_64.cc
@@ -35,7 +35,7 @@ extern "C" void art_portable_resolution_trampoline(mirror::ArtMethod*);
 extern "C" void art_portable_to_interpreter_bridge(mirror::ArtMethod*);
 
 // Cast entrypoints.
-extern "C" uint32_t artIsAssignableFromCode(const mirror::Class* klass,
+extern "C" uint32_t art_quick_assignable_from_code(const mirror::Class* klass,
                                             const mirror::Class* ref_class);
 extern "C" void art_quick_check_cast(void*, void*);
 
@@ -129,7 +129,7 @@ void InitEntryPoints(InterpreterEntryPoints* ipoints, JniEntryPoints* jpoints,
   ResetQuickAllocEntryPoints(qpoints);
 
   // Cast
-  qpoints->pInstanceofNonTrivial = artIsAssignableFromCode;
+  qpoints->pInstanceofNonTrivial = art_quick_assignable_from_code;
   qpoints->pCheckCast = art_quick_check_cast;
 
   // DexCache
diff --git a/runtime/arch/x86_64/jni_entrypoints_x86_64.S b/runtime/arch/x86_64/jni_entrypoints_x86_64.S
index d668797..f6736df 100644
--- a/runtime/arch/x86_64/jni_entrypoints_x86_64.S
+++ b/runtime/arch/x86_64/jni_entrypoints_x86_64.S
@@ -28,8 +28,8 @@ DEFINE_FUNCTION art_jni_dlsym_lookup_stub
     PUSH rdx  // Arg.
     PUSH rcx  // Arg.
     // Create space for FPR args, plus padding for alignment
-    subq LITERAL(72), %rsp
-    CFI_ADJUST_CFA_OFFSET(72)
+    subq LITERAL(72 + 4 * 8), %rsp
+    CFI_ADJUST_CFA_OFFSET(72 + 4 * 8)
     // Save FPRs.
     movq %xmm0, 0(%rsp)
     movq %xmm1, 8(%rsp)
@@ -39,6 +39,10 @@ DEFINE_FUNCTION art_jni_dlsym_lookup_stub
     movq %xmm5, 40(%rsp)
     movq %xmm6, 48(%rsp)
     movq %xmm7, 56(%rsp)
+    movq %xmm12, 64(%rsp)
+    movq %xmm13, 72(%rsp)
+    movq %xmm14, 80(%rsp)
+    movq %xmm15, 88(%rsp)
     // prepare call
     movq %gs:THREAD_SELF_OFFSET, %rdi      // RDI := Thread::Current()
     // call
@@ -52,8 +56,12 @@ DEFINE_FUNCTION art_jni_dlsym_lookup_stub
     movq 40(%rsp), %xmm5
     movq 48(%rsp), %xmm6
     movq 56(%rsp), %xmm7
-    addq LITERAL(72), %rsp
-    CFI_ADJUST_CFA_OFFSET(-72)
+    movq 64(%rsp), %xmm12
+    movq 72(%rsp), %xmm13
+    movq 80(%rsp), %xmm14
+    movq 88(%rsp), %xmm15
+    addq LITERAL(72 + 4 * 8), %rsp
+    CFI_ADJUST_CFA_OFFSET(-72 - 4 * 8)
     POP rcx  // Arg.
     POP rdx  // Arg.
     POP rsi  // Arg.
diff --git a/runtime/arch/x86_64/quick_entrypoints_x86_64.S b/runtime/arch/x86_64/quick_entrypoints_x86_64.S
index 8fa947c..7f7226c 100644
--- a/runtime/arch/x86_64/quick_entrypoints_x86_64.S
+++ b/runtime/arch/x86_64/quick_entrypoints_x86_64.S
@@ -16,6 +16,26 @@
 
 #include "asm_support_x86_64.S"
 
+MACRO0(SETUP_FP_CALLEE_SAVE_FRAME)
+    // Create space for ART FP callee-saved registers
+    subq LITERAL(4 * 8), %rsp
+    CFI_ADJUST_CFA_OFFSET(4 * 8)
+    movq %xmm12, 0(%rsp)
+    movq %xmm13, 8(%rsp)
+    movq %xmm14, 16(%rsp)
+    movq %xmm15, 24(%rsp)
+END_MACRO
+
+MACRO0(RESTORE_FP_CALLEE_SAVE_FRAME)
+    // Restore ART FP callee-saved registers
+    movq 0(%rsp), %xmm12
+    movq 8(%rsp), %xmm13
+    movq 16(%rsp), %xmm14
+    movq 24(%rsp), %xmm15
+    addq LITERAL(4 * 8), %rsp
+    CFI_ADJUST_CFA_OFFSET(- 4 * 8)
+END_MACRO
+
 // For x86, the CFA is esp+4, the address above the pushed return address on the stack.
 
     /*
@@ -37,6 +57,14 @@ MACRO0(SETUP_SAVE_ALL_CALLEE_SAVE_FRAME)
     PUSH r12  // Callee save.
     PUSH rbp  // Callee save.
     PUSH rbx  // Callee save.
+    // Create space for FPR args, plus padding for alignment
+    subq LITERAL(4 * 8), %rsp
+    CFI_ADJUST_CFA_OFFSET(4 * 8)
+    // Save FPRs.
+    movq %xmm12, 0(%rsp)
+    movq %xmm13, 8(%rsp)
+    movq %xmm14, 16(%rsp)
+    movq %xmm15, 24(%rsp)
     subq MACRO_LITERAL(8), %rsp  // Space for Method* (also aligns the frame).
     CFI_ADJUST_CFA_OFFSET(8)
     // R10 := ArtMethod* for save all callee save frame method.
@@ -46,7 +74,7 @@ MACRO0(SETUP_SAVE_ALL_CALLEE_SAVE_FRAME)
 
     // Ugly compile-time check, but we only have the preprocessor.
     // Last +8: implicit return address pushed on stack when caller made call.
-#if (FRAME_SIZE_SAVE_ALL_CALLEE_SAVE != 6*8 + 8 + 8)
+#if (FRAME_SIZE_SAVE_ALL_CALLEE_SAVE != 6*8 + 4*8 + 8 + 8)
 #error "SAVE_ALL_CALLEE_SAVE_FRAME(X86_64) size not as expected."
 #endif
 #endif  // __APPLE__
@@ -71,8 +99,14 @@ MACRO0(SETUP_REF_ONLY_CALLEE_SAVE_FRAME)
     PUSH r12  // Callee save.
     PUSH rbp  // Callee save.
     PUSH rbx  // Callee save.
-    subq MACRO_LITERAL(8), %rsp  // Space for Method* (also aligns the frame).
-    CFI_ADJUST_CFA_OFFSET(8)
+    // Create space for FPR args, plus padding for alignment
+    subq LITERAL(8 + 4*8), %rsp
+    CFI_ADJUST_CFA_OFFSET(8 + 4*8)
+    // Save FPRs.
+    movq %xmm12, 8(%rsp)
+    movq %xmm13, 16(%rsp)
+    movq %xmm14, 24(%rsp)
+    movq %xmm15, 32(%rsp)
     // R10 := ArtMethod* for refs only callee save frame method.
     movq RUNTIME_REFS_ONLY_CALLEE_SAVE_FRAME_OFFSET(%r10), %r10
     // Store ArtMethod* to bottom of stack.
@@ -80,15 +114,19 @@ MACRO0(SETUP_REF_ONLY_CALLEE_SAVE_FRAME)
 
     // Ugly compile-time check, but we only have the preprocessor.
     // Last +8: implicit return address pushed on stack when caller made call.
-#if (FRAME_SIZE_REFS_ONLY_CALLEE_SAVE != 6*8 + 8 + 8)
+#if (FRAME_SIZE_REFS_ONLY_CALLEE_SAVE != 6*8 + 4*8 + 8 + 8)
 #error "REFS_ONLY_CALLEE_SAVE_FRAME(X86_64) size not as expected."
 #endif
 #endif  // __APPLE__
 END_MACRO
 
 MACRO0(RESTORE_REF_ONLY_CALLEE_SAVE_FRAME)
-    addq MACRO_LITERAL(8), %rsp
-    CFI_ADJUST_CFA_OFFSET(-8)
+    movq 8(%rsp), %xmm12
+    movq 16(%rsp), %xmm13
+    movq 24(%rsp), %xmm14
+    movq 32(%rsp), %xmm15
+    addq LITERAL(8 + 4*8), %rsp
+    CFI_ADJUST_CFA_OFFSET(-8 - 4*8)
     // TODO: optimize by not restoring callee-saves restored by the ABI
     POP rbx
     POP rbp
@@ -123,8 +161,8 @@ MACRO0(SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME)
     PUSH rdx  // Quick arg 2.
     PUSH rcx  // Quick arg 3.
     // Create space for FPR args and create 2 slots, 1 of padding and 1 for the ArtMethod*.
-    subq MACRO_LITERAL(80), %rsp
-    CFI_ADJUST_CFA_OFFSET(80)
+    subq MACRO_LITERAL(80 + 4 * 8), %rsp
+    CFI_ADJUST_CFA_OFFSET(80 + 4 * 8)
     // R10 := ArtMethod* for ref and args callee save frame method.
     movq RUNTIME_REF_AND_ARGS_CALLEE_SAVE_FRAME_OFFSET(%r10), %r10
     // Save FPRs.
@@ -136,12 +174,16 @@ MACRO0(SETUP_REF_AND_ARGS_CALLEE_SAVE_FRAME)
     movq %xmm5, 56(%rsp)
     movq %xmm6, 64(%rsp)
     movq %xmm7, 72(%rsp)
+    movq %xmm12, 80(%rsp)
+    movq %xmm13, 88(%rsp)
+    movq %xmm14, 96(%rsp)
+    movq %xmm15, 104(%rsp)
     // Store ArtMethod* to bottom of stack.
     movq %r10, 0(%rsp)
 
     // Ugly compile-time check, but we only have the preprocessor.
     // Last +8: implicit return address pushed on stack when caller made call.
-#if (FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE != 11*8 + 80 + 8)
+#if (FRAME_SIZE_REFS_AND_ARGS_CALLEE_SAVE != 11*8 + 4*8 + 80 + 8)
 #error "REFS_AND_ARGS_CALLEE_SAVE_FRAME(X86_64) size not as expected."
 #endif
 #endif  // __APPLE__
@@ -157,8 +199,12 @@ MACRO0(RESTORE_REF_AND_ARGS_CALLEE_SAVE_FRAME)
     movq 56(%rsp), %xmm5
     movq 64(%rsp), %xmm6
     movq 72(%rsp), %xmm7
-    addq MACRO_LITERAL(80), %rsp
-    CFI_ADJUST_CFA_OFFSET(-80)
+    movq 80(%rsp), %xmm12
+    movq 88(%rsp), %xmm13
+    movq 96(%rsp), %xmm14
+    movq 104(%rsp), %xmm15
+    addq MACRO_LITERAL(80 + 4 * 8), %rsp
+    CFI_ADJUST_CFA_OFFSET(-(80 + 4 * 8))
     // Restore callee and GPR args, mixed together to agree with core spills bitmap.
     POP rcx
     POP rdx
@@ -536,6 +582,58 @@ DEFINE_FUNCTION art_quick_invoke_static_stub
 #endif  // __APPLE__
 END_FUNCTION art_quick_invoke_static_stub
 
+    /*
+     * Long jump stub.
+     * On entry:
+     *   rdi = gprs
+     *   rsi = fprs
+     */
+DEFINE_FUNCTION art_quick_do_long_jump
+#if defined(__APPLE__)
+    int3
+    int3
+#else
+    // Restore FPRs.
+    movq 0(%rsi), %xmm0
+    movq 8(%rsi), %xmm1
+    movq 16(%rsi), %xmm2
+    movq 24(%rsi), %xmm3
+    movq 32(%rsi), %xmm4
+    movq 40(%rsi), %xmm5
+    movq 48(%rsi), %xmm6
+    movq 56(%rsi), %xmm7
+    movq 64(%rsi), %xmm8
+    movq 72(%rsi), %xmm9
+    movq 80(%rsi), %xmm10
+    movq 88(%rsi), %xmm11
+    movq 96(%rsi), %xmm12
+    movq 104(%rsi), %xmm13
+    movq 112(%rsi), %xmm14
+    movq 120(%rsi), %xmm15
+    // Restore FPRs.
+    movq %rdi, %rsp   // RSP points to gprs.
+    // Load all registers except RSP and RIP with values in gprs.
+    popq %r15
+    popq %r14
+    popq %r13
+    popq %r12
+    popq %r11
+    popq %r10
+    popq %r9
+    popq %r8
+    popq %rdi
+    popq %rsi
+    popq %rbp
+    addq LITERAL(8), %rsp   // Skip rsp
+    popq %rbx
+    popq %rdx
+    popq %rcx
+    popq %rax
+    popq %rsp      // Load stack pointer.
+    ret            // From higher in the stack pop rip.
+#endif  // __APPLE__
+END_FUNCTION art_quick_do_long_jump
+
 MACRO3(NO_ARG_DOWNCALL, c_name, cxx_name, return_macro)
     DEFINE_FUNCTION VAR(c_name, 0)
     SETUP_REF_ONLY_CALLEE_SAVE_FRAME  // save ref containing registers for GC
@@ -820,13 +918,17 @@ END_FUNCTION art_quick_unlock_object
 DEFINE_FUNCTION art_quick_check_cast
     PUSH rdi                          // Save args for exc
     PUSH rsi
+    SETUP_FP_CALLEE_SAVE_FRAME
     call PLT_SYMBOL(artIsAssignableFromCode)  // (Class* klass, Class* ref_klass)
     testq %rax, %rax
     jz 1f                             // jump forward if not assignable
+    RESTORE_FP_CALLEE_SAVE_FRAME
     addq LITERAL(16), %rsp            // pop arguments
     CFI_ADJUST_CFA_OFFSET(-16)
+
     ret
 1:
+    RESTORE_FP_CALLEE_SAVE_FRAME
     POP rsi                           // Pop arguments
     POP rdi
     SETUP_SAVE_ALL_CALLEE_SAVE_FRAME  // save all registers as basis for long jump context
@@ -907,6 +1009,7 @@ DEFINE_FUNCTION art_quick_aput_obj
     PUSH rdx
     subq LITERAL(8), %rsp        // Alignment padding.
     CFI_ADJUST_CFA_OFFSET(8)
+    SETUP_FP_CALLEE_SAVE_FRAME
 
                                   // "Uncompress" = do nothing, as already zero-extended on load.
     movl CLASS_OFFSET(%edx), %esi // Pass arg2 = value's class.
@@ -918,6 +1021,7 @@ DEFINE_FUNCTION art_quick_aput_obj
     testq %rax, %rax
     jz   .Lthrow_array_store_exception
 
+    RESTORE_FP_CALLEE_SAVE_FRAME
     // Restore arguments.
     addq LITERAL(8), %rsp
     CFI_ADJUST_CFA_OFFSET(-8)
@@ -934,6 +1038,7 @@ DEFINE_FUNCTION art_quick_aput_obj
 //  movb %dl, (%rdx, %rdi)
     ret
 .Lthrow_array_store_exception:
+    RESTORE_FP_CALLEE_SAVE_FRAME
     // Restore arguments.
     addq LITERAL(8), %rsp
     CFI_ADJUST_CFA_OFFSET(-8)
@@ -1012,8 +1117,8 @@ DEFINE_FUNCTION art_quick_proxy_invoke_handler
     PUSH rdx  // Quick arg 2.
     PUSH rcx  // Quick arg 3.
     // Create space for FPR args and create 2 slots, 1 of padding and 1 for the ArtMethod*.
-    subq LITERAL(80), %rsp
-    CFI_ADJUST_CFA_OFFSET(80)
+    subq LITERAL(80 + 4*8), %rsp
+    CFI_ADJUST_CFA_OFFSET(80 + 4*8)
     // Save FPRs.
     movq %xmm0, 16(%rsp)
     movq %xmm1, 24(%rsp)
@@ -1023,14 +1128,18 @@ DEFINE_FUNCTION art_quick_proxy_invoke_handler
     movq %xmm5, 56(%rsp)
     movq %xmm6, 64(%rsp)
     movq %xmm7, 72(%rsp)
+    movq %xmm12, 80(%rsp)
+    movq %xmm13, 88(%rsp)
+    movq %xmm14, 96(%rsp)
+    movq %xmm15, 104(%rsp)
     // Store proxy method to bottom of stack.
     movq %rdi, 0(%rsp)
     movq %gs:THREAD_SELF_OFFSET, %rdx  // Pass Thread::Current().
     movq %rsp, %rcx                    // Pass SP.
     call PLT_SYMBOL(artQuickProxyInvokeHandler) // (proxy method, receiver, Thread*, SP)
     movq %rax, %xmm0                   // Copy return value in case of float returns.
-    addq LITERAL(168), %rsp            // Pop arguments.
-    CFI_ADJUST_CFA_OFFSET(-168)
+    addq LITERAL(168 + 4*8), %rsp            // Pop arguments.
+    CFI_ADJUST_CFA_OFFSET(-168 - 4*8)
     RETURN_OR_DELIVER_PENDING_EXCEPTION
 END_FUNCTION art_quick_proxy_invoke_handler
 
@@ -1156,8 +1265,8 @@ DEFINE_FUNCTION art_quick_generic_jni_trampoline
     PUSH rdx  // Quick arg 2.
     PUSH rcx  // Quick arg 3.
     // Create space for FPR args and create 2 slots, 1 of padding and 1 for the ArtMethod*.
-    subq LITERAL(80), %rsp
-    CFI_ADJUST_CFA_OFFSET(80)
+    subq LITERAL(80 + 4*8), %rsp
+    CFI_ADJUST_CFA_OFFSET(80 + 4*8)
     // Save FPRs.
     movq %xmm0, 16(%rsp)
     movq %xmm1, 24(%rsp)
@@ -1167,6 +1276,10 @@ DEFINE_FUNCTION art_quick_generic_jni_trampoline
     movq %xmm5, 56(%rsp)
     movq %xmm6, 64(%rsp)
     movq %xmm7, 72(%rsp)
+    movq %xmm12, 80(%rsp)
+    movq %xmm13, 88(%rsp)
+    movq %xmm14, 96(%rsp)
+    movq %xmm15, 104(%rsp)
     movq %rdi, 0(%rsp)              // Store native ArtMethod* to bottom of stack.
     movq %rsp, %rbp                 // save SP at (old) callee-save frame
     CFI_DEF_CFA_REGISTER(rbp)
@@ -1260,9 +1373,13 @@ DEFINE_FUNCTION art_quick_generic_jni_trampoline
     movq 56(%rsp), %xmm5
     movq 64(%rsp), %xmm6
     movq 72(%rsp), %xmm7
+    movq 80(%rsp), %xmm12
+    movq 88(%rsp), %xmm13
+    movq 96(%rsp), %xmm14
+    movq 104(%rsp), %xmm15
     // was 80 bytes
-    addq LITERAL(80), %rsp
-    CFI_ADJUST_CFA_OFFSET(-80)
+    addq LITERAL(80 + 4*8), %rsp
+    CFI_ADJUST_CFA_OFFSET(-80 - 4*8)
     // Save callee and GPR args, mixed together to agree with core spills bitmap.
     POP rcx  // Arg.
     POP rdx  // Arg.
@@ -1292,9 +1409,13 @@ DEFINE_FUNCTION art_quick_generic_jni_trampoline
     movq 56(%rsp), %xmm5
     movq 64(%rsp), %xmm6
     movq 72(%rsp), %xmm7
-    // was 80 bytes
-    addq LITERAL(80), %rsp
-    CFI_ADJUST_CFA_OFFSET(-80)
+    movq 80(%rsp), %xmm12
+    movq 88(%rsp), %xmm13
+    movq 96(%rsp), %xmm14
+    movq 104(%rsp), %xmm15
+    // was 80 + 32 bytes
+    addq LITERAL(80 + 4*8), %rsp
+    CFI_ADJUST_CFA_OFFSET(-80 - 4*8)
     // Save callee and GPR args, mixed together to agree with core spills bitmap.
     POP rcx  // Arg.
     POP rdx  // Arg.
@@ -1450,3 +1571,10 @@ DEFINE_FUNCTION art_quick_string_compareto
 END_FUNCTION art_quick_string_compareto
 
 UNIMPLEMENTED art_quick_memcmp16
+
+DEFINE_FUNCTION art_quick_assignable_from_code
+    SETUP_FP_CALLEE_SAVE_FRAME
+    call PLT_SYMBOL(artIsAssignableFromCode)       // (const mirror::Class*, const mirror::Class*)
+    RESTORE_FP_CALLEE_SAVE_FRAME
+    ret
+END_FUNCTION art_quick_assignable_from_code
diff --git a/runtime/arch/x86_64/quick_method_frame_info_x86_64.h b/runtime/arch/x86_64/quick_method_frame_info_x86_64.h
index 6183909..53aa212 100644
--- a/runtime/arch/x86_64/quick_method_frame_info_x86_64.h
+++ b/runtime/arch/x86_64/quick_method_frame_info_x86_64.h
@@ -34,6 +34,9 @@ static constexpr uint32_t kX86_64CalleeSaveFpArgSpills =
     (1 << art::x86_64::XMM0) | (1 << art::x86_64::XMM1) | (1 << art::x86_64::XMM2) |
     (1 << art::x86_64::XMM3) | (1 << art::x86_64::XMM4) | (1 << art::x86_64::XMM5) |
     (1 << art::x86_64::XMM6) | (1 << art::x86_64::XMM7);
+static constexpr uint32_t kX86_64CalleeSaveFpSpills =
+    (1 << art::x86_64::XMM12) | (1 << art::x86_64::XMM13) |
+    (1 << art::x86_64::XMM14) | (1 << art::x86_64::XMM15);
 
 constexpr uint32_t X86_64CalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
   return kX86_64CalleeSaveRefSpills |
@@ -42,7 +45,8 @@ constexpr uint32_t X86_64CalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
 }
 
 constexpr uint32_t X86_64CalleeSaveFpSpills(Runtime::CalleeSaveType type) {
-  return (type == Runtime::kRefsAndArgs ? kX86_64CalleeSaveFpArgSpills : 0);
+  return kX86_64CalleeSaveFpSpills |
+      (type == Runtime::kRefsAndArgs ? kX86_64CalleeSaveFpArgSpills : 0);
 }
 
 constexpr uint32_t X86_64CalleeSaveFrameSize(Runtime::CalleeSaveType type) {
diff --git a/runtime/arch/x86_64/registers_x86_64.cc b/runtime/arch/x86_64/registers_x86_64.cc
index 38f3494..f29c426 100644
--- a/runtime/arch/x86_64/registers_x86_64.cc
+++ b/runtime/arch/x86_64/registers_x86_64.cc
@@ -34,5 +34,14 @@ std::ostream& operator<<(std::ostream& os, const Register& rhs) {
   return os;
 }
 
+std::ostream& operator<<(std::ostream& os, const FloatRegister& rhs) {
+  if (rhs >= XMM0 && rhs <= XMM15) {
+    os << "xmm" << static_cast<int>(rhs);
+  } else {
+    os << "Register[" << static_cast<int>(rhs) << "]";
+  }
+  return os;
+}
+
 }  // namespace x86_64
 }  // namespace art