Implement crankshaft support for pixel array stores.

src/ia32/lithium-ia32.cc

Index: src/ia32/lithium-ia32.cc
diff --git a/src/ia32/lithium-ia32.cc b/src/ia32/lithium-ia32.cc
index 0ad3819292b047037b2e43e64265babaf4b38d2d..6f319f37e622f01d147c03bc526217e87b801627 100644
--- a/src/ia32/lithium-ia32.cc
+++ b/src/ia32/lithium-ia32.cc
@@ -1833,6 +1833,21 @@ LInstruction* LChunkBuilder::DoStoreKeyedFastElement(
 }
 
 
+LInstruction* LChunkBuilder::DoStorePixelArrayElement(
+    HStorePixelArrayElement* instr) {
+  ASSERT(instr->value()->representation().IsInteger32());
+  ASSERT(instr->external_pointer()->representation().IsExternal());
+  ASSERT(instr->key()->representation().IsInteger32());
+
+  LOperand* external_pointer = UseRegister(instr->external_pointer());
+  LOperand* val = UseRegister(instr->value());
+  LOperand* key = UseRegister(instr->key());
+  LOperand* clamped = FixedTemp(eax);

[Kevin Millikin (Chromium), 2011/02/16 08:51:25]

Maybe a simple comment that this has to be a byte register, choice of eax is
arbitrary.

[danno, 2011/02/16 13:54:22]

Done.

+
+  return new LStorePixelArrayElement(external_pointer, key, val, clamped);
+}
+
+
 LInstruction* LChunkBuilder::DoStoreKeyedGeneric(HStoreKeyedGeneric* instr) {
   LOperand* context = UseFixed(instr->context(), esi);
   LOperand* object = UseFixed(instr->object(), edx);