MIPS: Move IC code into a subdir and move ic-compilation related code from stub-cache into ic-compi…

src/ic/mips64/stub-cache-mips64.cc

Index: src/ic/mips64/stub-cache-mips64.cc
diff --git a/src/ic/arm/stub-cache-arm.cc b/src/ic/mips64/stub-cache-mips64.cc
similarity index 67%
copy from src/ic/arm/stub-cache-arm.cc
copy to src/ic/mips64/stub-cache-mips64.cc
index a8b650beecfc99f06199d6a93dd63da98d46e183..6d3fcb3e1d04f9a311292b1d22773294332f7d4e 100644
--- a/src/ic/arm/stub-cache-arm.cc
+++ b/src/ic/mips64/stub-cache-mips64.cc
@@ -4,7 +4,7 @@
 
 #include "src/v8.h"
 
-#if V8_TARGET_ARCH_ARM
+#if V8_TARGET_ARCH_MIPS64
 
 #include "src/codegen.h"
 #include "src/ic/stub-cache.h"
@@ -25,9 +25,9 @@ static void ProbeTable(Isolate* isolate, MacroAssembler* masm,
   ExternalReference value_offset(isolate->stub_cache()->value_reference(table));
   ExternalReference map_offset(isolate->stub_cache()->map_reference(table));
 
-  uint32_t key_off_addr = reinterpret_cast<uint32_t>(key_offset.address());
-  uint32_t value_off_addr = reinterpret_cast<uint32_t>(value_offset.address());
-  uint32_t map_off_addr = reinterpret_cast<uint32_t>(map_offset.address());
+  uint64_t key_off_addr = reinterpret_cast<uint64_t>(key_offset.address());
+  uint64_t value_off_addr = reinterpret_cast<uint64_t>(value_offset.address());
+  uint64_t map_off_addr = reinterpret_cast<uint64_t>(map_offset.address());
 
   // Check the relative positions of the address fields.
   DCHECK(value_off_addr > key_off_addr);
@@ -42,39 +42,34 @@ static void ProbeTable(Isolate* isolate, MacroAssembler* masm,
   scratch = no_reg;
 
   // Multiply by 3 because there are 3 fields per entry (name, code, map).
-  __ add(offset_scratch, offset, Operand(offset, LSL, 1));
+  __ dsll(offset_scratch, offset, 1);
+  __ Daddu(offset_scratch, offset_scratch, offset);
 
   // Calculate the base address of the entry.
-  __ mov(base_addr, Operand(key_offset));
-  __ add(base_addr, base_addr, Operand(offset_scratch, LSL, kPointerSizeLog2));
+  __ li(base_addr, Operand(key_offset));
+  __ dsll(at, offset_scratch, kPointerSizeLog2);
+  __ Daddu(base_addr, base_addr, at);
 
   // Check that the key in the entry matches the name.
-  __ ldr(ip, MemOperand(base_addr, 0));
-  __ cmp(name, ip);
-  __ b(ne, &miss);
+  __ ld(at, MemOperand(base_addr, 0));
+  __ Branch(&miss, ne, name, Operand(at));
 
   // Check the map matches.
-  __ ldr(ip, MemOperand(base_addr, map_off_addr - key_off_addr));
-  __ ldr(scratch2, FieldMemOperand(receiver, HeapObject::kMapOffset));
-  __ cmp(ip, scratch2);
-  __ b(ne, &miss);
+  __ ld(at, MemOperand(base_addr, map_off_addr - key_off_addr));
+  __ ld(scratch2, FieldMemOperand(receiver, HeapObject::kMapOffset));
+  __ Branch(&miss, ne, at, Operand(scratch2));
 
   // Get the code entry from the cache.
   Register code = scratch2;
   scratch2 = no_reg;
-  __ ldr(code, MemOperand(base_addr, value_off_addr - key_off_addr));
+  __ ld(code, MemOperand(base_addr, value_off_addr - key_off_addr));
 
   // Check that the flags match what we're looking for.
   Register flags_reg = base_addr;
   base_addr = no_reg;
-  __ ldr(flags_reg, FieldMemOperand(code, Code::kFlagsOffset));
-  // It's a nice optimization if this constant is encodable in the bic insn.
-
-  uint32_t mask = Code::kFlagsNotUsedInLookup;
-  DCHECK(__ ImmediateFitsAddrMode1Instruction(mask));
-  __ bic(flags_reg, flags_reg, Operand(mask));
-  __ cmp(flags_reg, Operand(flags));
-  __ b(ne, &miss);
+  __ lw(flags_reg, FieldMemOperand(code, Code::kFlagsOffset));
+  __ And(flags_reg, flags_reg, Operand(~Code::kFlagsNotUsedInLookup));
+  __ Branch(&miss, ne, flags_reg, Operand(flags));
 
 #ifdef DEBUG
   if (FLAG_test_secondary_stub_cache && table == StubCache::kPrimary) {
@@ -85,7 +80,8 @@ static void ProbeTable(Isolate* isolate, MacroAssembler* masm,
 #endif
 
   // Jump to the first instruction in the code stub.
-  __ add(pc, code, Operand(Code::kHeaderSize - kHeapObjectTag));
+  __ Daddu(at, code, Operand(Code::kHeaderSize - kHeapObjectTag));
+  __ Jump(at);
 
   // Miss: fall through.
   __ bind(&miss);
@@ -101,7 +97,8 @@ void StubCache::GenerateProbe(MacroAssembler* masm, Code::Flags flags,
 
   // Make sure that code is valid. The multiplying code relies on the
   // entry size being 12.
-  DCHECK(sizeof(Entry) == 12);
+  // DCHECK(sizeof(Entry) == 12);
+  // DCHECK(sizeof(Entry) == 3 * kPointerSize);
 
   // Make sure the flags does not name a specific type.
   DCHECK(Code::ExtractTypeFromFlags(flags) == 0);
@@ -117,7 +114,7 @@ void StubCache::GenerateProbe(MacroAssembler* masm, Code::Flags flags,
   DCHECK(!extra2.is(scratch));
   DCHECK(!extra2.is(extra));
 
-  // Check scratch, extra and extra2 registers are valid.
+  // Check register validity.
   DCHECK(!scratch.is(no_reg));
   DCHECK(!extra.is(no_reg));
   DCHECK(!extra2.is(no_reg));
@@ -131,28 +128,26 @@ void StubCache::GenerateProbe(MacroAssembler* masm, Code::Flags flags,
   __ JumpIfSmi(receiver, &miss);
 
   // Get the map of the receiver and compute the hash.
-  __ ldr(scratch, FieldMemOperand(name, Name::kHashFieldOffset));
-  __ ldr(ip, FieldMemOperand(receiver, HeapObject::kMapOffset));
-  __ add(scratch, scratch, Operand(ip));
-  uint32_t mask = kPrimaryTableSize - 1;
+  __ ld(scratch, FieldMemOperand(name, Name::kHashFieldOffset));
+  __ ld(at, FieldMemOperand(receiver, HeapObject::kMapOffset));
+  __ Daddu(scratch, scratch, at);
+  uint64_t mask = kPrimaryTableSize - 1;
   // We shift out the last two bits because they are not part of the hash and
   // they are always 01 for maps.
-  __ mov(scratch, Operand(scratch, LSR, kCacheIndexShift));
-  // Mask down the eor argument to the minimum to keep the immediate
-  // ARM-encodable.
-  __ eor(scratch, scratch, Operand((flags >> kCacheIndexShift) & mask));
-  // Prefer and_ to ubfx here because ubfx takes 2 cycles.
-  __ and_(scratch, scratch, Operand(mask));
+  __ dsrl(scratch, scratch, kCacheIndexShift);
+  __ Xor(scratch, scratch, Operand((flags >> kCacheIndexShift) & mask));
+  __ And(scratch, scratch, Operand(mask));
 
   // Probe the primary table.
   ProbeTable(isolate, masm, flags, kPrimary, receiver, name, scratch, extra,
              extra2, extra3);
 
   // Primary miss: Compute hash for secondary probe.
-  __ sub(scratch, scratch, Operand(name, LSR, kCacheIndexShift));
-  uint32_t mask2 = kSecondaryTableSize - 1;
-  __ add(scratch, scratch, Operand((flags >> kCacheIndexShift) & mask2));
-  __ and_(scratch, scratch, Operand(mask2));
+  __ dsrl(at, name, kCacheIndexShift);
+  __ Dsubu(scratch, scratch, at);
+  uint64_t mask2 = kSecondaryTableSize - 1;
+  __ Daddu(scratch, scratch, Operand((flags >> kCacheIndexShift) & mask2));
+  __ And(scratch, scratch, Operand(mask2));
 
   // Probe the secondary table.
   ProbeTable(isolate, masm, flags, kSecondary, receiver, name, scratch, extra,
@@ -170,4 +165,4 @@ void StubCache::GenerateProbe(MacroAssembler* masm, Code::Flags flags,
 }
 }  // namespace v8::internal
 
-#endif  // V8_TARGET_ARCH_ARM
+#endif  // V8_TARGET_ARCH_MIPS64