[interpreter] Introduce fused bytecodes for common sequences.

test/cctest/interpreter/bytecode_expectations/GlobalDelete.golden

Index: test/cctest/interpreter/bytecode_expectations/GlobalDelete.golden
diff --git a/test/cctest/interpreter/bytecode_expectations/GlobalDelete.golden b/test/cctest/interpreter/bytecode_expectations/GlobalDelete.golden
index fc8658252c5d5115e98c0f42d1621e04b4061e88..efa0011d427584dfbeaa5c85b7d61f06a848a4ef 100644
--- a/test/cctest/interpreter/bytecode_expectations/GlobalDelete.golden
+++ b/test/cctest/interpreter/bytecode_expectations/GlobalDelete.golden
@@ -18,11 +18,10 @@ snippet: "
 "
 frame size: 1
 parameter count: 1
-bytecode array length: 11
+bytecode array length: 10
 bytecodes: [
   /*   32 E> */ B(StackCheck),
-  /*   39 S> */ B(LdaGlobal), U8(0), U8(1),
-                B(Star), R(0),
+  /*   39 S> */ B(LdrGlobal), U8(0), U8(1), R(0),
                 B(LdaConstant), U8(1),
                 B(DeletePropertySloppy), R(0),
   /*   58 S> */ B(Return),
@@ -45,11 +44,10 @@ snippet: "
 "
 frame size: 1
 parameter count: 1
-bytecode array length: 11
+bytecode array length: 10
 bytecodes: [
   /*   28 E> */ B(StackCheck),
-  /*   51 S> */ B(LdaGlobal), U8(0), U8(1),
-                B(Star), R(0),
+  /*   51 S> */ B(LdrGlobal), U8(0), U8(1), R(0),
                 B(LdaSmi), U8(1),
                 B(DeletePropertyStrict), R(0),
   /*   71 S> */ B(Return),
@@ -70,13 +68,11 @@ snippet: "
 "
 frame size: 2
 parameter count: 1
-bytecode array length: 16
+bytecode array length: 14
 bytecodes: [
   /*   32 E> */ B(StackCheck),
-  /*   39 S> */ B(LdaContextSlot), R(context), U8(3),
-                B(Star), R(0),
-                B(LdaContextSlot), R(0), U8(2),
-                B(Star), R(1),
+  /*   39 S> */ B(LdrContextSlot), R(context), U8(3), R(0),
+                B(LdrContextSlot), R(0), U8(2), R(1),
                 B(LdaConstant), U8(0),
                 B(DeletePropertySloppy), R(1),
   /*   56 S> */ B(Return),
@@ -97,13 +93,11 @@ snippet: "
 "
 frame size: 2
 parameter count: 1
-bytecode array length: 16
+bytecode array length: 14
 bytecodes: [
   /*   18 E> */ B(StackCheck),
-  /*   25 S> */ B(LdaContextSlot), R(context), U8(3),
-                B(Star), R(0),
-                B(LdaContextSlot), R(0), U8(2),
-                B(Star), R(1),
+  /*   25 S> */ B(LdrContextSlot), R(context), U8(3), R(0),
+                B(LdrContextSlot), R(0), U8(2), R(1),
                 B(LdaConstant), U8(0),
                 B(DeletePropertySloppy), R(1),
   /*   42 S> */ B(Return),