Reland 17588: Add signed/unsigned 8-bit and 16-bit Representations to Crankshaft

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index 7a5bef8552b83cf6fdb0af2ee33e9f6920fef555..82066a6c6706f997f0c8be535d70684199a93443 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -384,6 +384,38 @@ void MacroAssembler::Usat(Register dst, int satpos, const Operand& src,
 }
 
 
+void MacroAssembler::Load(Register dst,
+                          const MemOperand& src,
+                          Representation r) {
+  ASSERT(!r.IsDouble());
+  if (r.IsInteger8()) {
+    ldrsb(dst, src);
+  } else if (r.IsUInteger8()) {
+    ldrb(dst, src);
+  } else if (r.IsInteger16()) {
+    ldrsh(dst, src);
+  } else if (r.IsUInteger16()) {
+    ldrh(dst, src);
+  } else {
+    ldr(dst, src);
+  }
+}
+
+
+void MacroAssembler::Store(Register src,
+                           const MemOperand& dst,
+                           Representation r) {
+  ASSERT(!r.IsDouble());
+  if (r.IsInteger8() || r.IsUInteger8()) {
+    strb(src, dst);
+  } else if (r.IsInteger16() || r.IsUInteger16()) {
+    strh(src, dst);
+  } else {
+    str(src, dst);
+  }
+}
+
+
 void MacroAssembler::LoadRoot(Register destination,
                               Heap::RootListIndex index,
                               Condition cond) {