Implements unboxed Mints on ARM.

runtime/vm/simulator_arm.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <math.h>  // for isnan.
 #include <setjmp.h>
 #include <stdlib.h>
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_ARM)
@@ skipping 3035 matching lines @@
     const QRegister qm = instr->QmField();
     simd_value_t s8d;
     simd_value_t s8n;
     simd_value_t s8m;
 
     get_qregister(qn, &s8n);
     get_qregister(qm, &s8m);
     int8_t* s8d_8 = reinterpret_cast<int8_t*>(&s8d);
     int8_t* s8n_8 = reinterpret_cast<int8_t*>(&s8n);
     int8_t* s8m_8 = reinterpret_cast<int8_t*>(&s8m);
+    uint8_t* s8d_u8 = reinterpret_cast<uint8_t*>(&s8d);
     uint8_t* s8n_u8 = reinterpret_cast<uint8_t*>(&s8n);
     uint8_t* s8m_u8 = reinterpret_cast<uint8_t*>(&s8m);
     int16_t* s8d_16 = reinterpret_cast<int16_t*>(&s8d);
     int16_t* s8n_16 = reinterpret_cast<int16_t*>(&s8n);
     int16_t* s8m_16 = reinterpret_cast<int16_t*>(&s8m);
+    uint16_t* s8d_u16 = reinterpret_cast<uint16_t*>(&s8d);
     uint16_t* s8n_u16 = reinterpret_cast<uint16_t*>(&s8n);
     uint16_t* s8m_u16 = reinterpret_cast<uint16_t*>(&s8m);
+    int32_t* s8d_32 = reinterpret_cast<int32_t*>(&s8d);
     int32_t* s8n_32 = reinterpret_cast<int32_t*>(&s8n);
     int32_t* s8m_32 = reinterpret_cast<int32_t*>(&s8m);
+    uint32_t* s8d_u32 = reinterpret_cast<uint32_t*>(&s8d);
+    uint32_t* s8m_u32 = reinterpret_cast<uint32_t*>(&s8m);
     int64_t* s8d_64 = reinterpret_cast<int64_t*>(&s8d);
     int64_t* s8n_64 = reinterpret_cast<int64_t*>(&s8n);
     int64_t* s8m_64 = reinterpret_cast<int64_t*>(&s8m);
+    uint64_t* s8d_u64 = reinterpret_cast<uint64_t*>(&s8d);
+    uint64_t* s8m_u64 = reinterpret_cast<uint64_t*>(&s8m);
 
     if ((instr->Bits(8, 4) == 8) && (instr->Bit(4) == 0) &&
         (instr->Bits(23, 2) == 0)) {
       // Uses q registers.
       // Format(instr, "vadd.'sz 'qd, 'qn, 'qm");
       const int size = instr->Bits(20, 2);
       if (size == 0) {
         for (int i = 0; i < 16; i++) {
           s8d_8[i] = s8n_8[i] + s8m_8[i];
         }
@@ skipping 67 matching lines @@
         UnimplementedInstruction(instr);
       } else {
         UNREACHABLE();
       }
     } else if ((instr->Bits(8, 4) == 13) && (instr->Bit(4) == 1) &&
                (instr->Bits(23, 2) == 2) && (instr->Bit(21) == 0)) {
       // Format(instr, "vmul.F32 'qd, 'qn, 'qm");
       for (int i = 0; i < 4; i++) {
         s8d.data_[i].f = s8n.data_[i].f * s8m.data_[i].f;
       }
+    } else if ((instr->Bits(8, 4) == 4) && (instr->Bit(4) == 0) &&
+               (instr->Bit(23) == 0) && (instr->Bits(25, 3) == 1)) {
+      // Format(instr, "vshlqu'sz 'qd, 'qm, 'qn");
+      // Format(instr, "vshlqi'sz 'qd, 'qm, 'qn");
+      const bool signd = instr->Bit(24) == 0;
+      const int size = instr->Bits(20, 2);
+      if (size == 0) {
+        for (int i = 0; i < 16; i++) {
+          int8_t shift = s8n_8[i];
+          if (shift > 0) {
+            s8d_u8[i] = s8m_u8[i] << shift;
+          } else if (shift < 0) {
+            if (signd) {
+              s8d_8[i] = s8m_8[i] >> (-shift);
+            } else {
+              s8d_u8[i] = s8m_u8[i] >> (-shift);
+            }
+          }
+        }
+      } else if (size == 1) {
+        for (int i = 0; i < 8; i++) {
+          int8_t shift = s8n_8[i * 2];
+          if (shift > 0) {
+            s8d_u16[i] = s8m_u16[i] << shift;
+          } else if (shift < 0) {
+            if (signd) {
+              s8d_16[i] = s8m_16[i] >> (-shift);
+            } else {
+              s8d_u16[i] = s8m_u16[i] >> (-shift);
+            }
+          }
+        }
+      } else if (size == 2) {
+        for (int i = 0; i < 4; i++) {
+          int8_t shift = s8n_8[i * 4];
+          if (shift > 0) {
+            s8d_u32[i] = s8m_u32[i] << shift;
+          } else if (shift < 0) {
+            if (signd) {
+              s8d_32[i] = s8m_32[i] >> (-shift);
+            } else {
+              s8d_u32[i] = s8m_u32[i] >> (-shift);
+            }
+          }
+        }
+      } else {
+        ASSERT(size == 3);
+        for (int i = 0; i < 2; i++) {
+          int8_t shift = s8n_8[i * 8];
+          if (shift > 0) {
+            s8d_u64[i] = s8m_u64[i] << shift;
+          } else if (shift < 0) {
+            if (signd) {
+              s8d_64[i] = s8m_64[i] >> (-shift);
+            } else {
+              s8d_u64[i] = s8m_u64[i] >> (-shift);
+            }
+          }
+        }
+      }
     } else if ((instr->Bits(8, 4) == 1) && (instr->Bit(4) == 1) &&
                (instr->Bits(20, 2) == 0) && (instr->Bits(23, 2) == 2)) {
       // Format(instr, "veorq 'qd, 'qn, 'qm");
       for (int i = 0; i < 4; i++) {
         s8d.data_[i].u = s8n.data_[i].u ^ s8m.data_[i].u;
       }
     } else if ((instr->Bits(8, 4) == 1) && (instr->Bit(4) == 1) &&
                (instr->Bits(20, 2) == 3) && (instr->Bits(23, 2) == 0)) {
       // Format(instr, "vornq 'qd, 'qn, 'qm");
       for (int i = 0; i < 4; i++) {
@@ skipping 11 matching lines @@
         for (int i = 0; i < 4; i++) {
           s8d.data_[i].u = s8n.data_[i].u | s8m.data_[i].u;
         }
       }
     } else if ((instr->Bits(8, 4) == 1) && (instr->Bit(4) == 1) &&
                (instr->Bits(20, 2) == 0) && (instr->Bits(23, 2) == 0)) {
       // Format(instr, "vandq 'qd, 'qn, 'qm");
       for (int i = 0; i < 4; i++) {
         s8d.data_[i].u = s8n.data_[i].u & s8m.data_[i].u;
       }
+    } else if ((instr->Bits(7, 5) == 11) && (instr->Bit(4) == 0) &&
+               (instr->Bits(20, 2) == 3) && (instr->Bits(23, 5) == 7) &&
+               (instr->Bits(16, 4) == 0)) {
+      // Format(instr, "vmvnq 'qd, 'qm");
+      for (int i = 0; i < 4; i++) {
+        s8d.data_[i].u = ~s8m.data_[i].u;
+      }
     } else if ((instr->Bits(8, 4) == 15) && (instr->Bit(4) == 0) &&
                (instr->Bits(20, 2) == 2) && (instr->Bits(23, 2) == 0)) {
       // Format(instr, "vminqs 'qd, 'qn, 'qm");
       for (int i = 0; i < 4; i++) {
         s8d.data_[i].f =
             s8n.data_[i].f <= s8m.data_[i].f ? s8n.data_[i].f : s8m.data_[i].f;
       }
     } else if ((instr->Bits(8, 4) == 15) && (instr->Bit(4) == 0) &&
                (instr->Bits(20, 2) == 0) && (instr->Bits(23, 2) == 0)) {
       // Format(instr, "vmaxqs 'qd, 'qn, 'qm");
@@ skipping 529 matching lines @@
   set_register(kExceptionObjectReg, bit_cast<int32_t>(raw_exception));
   set_register(kStackTraceObjectReg, bit_cast<int32_t>(raw_stacktrace));
   buf->Longjmp();
 }
 
 }  // namespace dart
 
 #endif  // !defined(HOST_ARCH_ARM)
 
 #endif  // defined TARGET_ARCH_ARM