Changeset 159381 in webkit for trunk/Source/JavaScriptCore/offlineasm/sh4.rb

Timestamp:

Nov 16, 2013, 2:28:27 PM (12 years ago)

Author:

[email protected]

Message:

[sh4] Fix build (broken since r159346).
​https://bugs.webkit.org/show_bug.cgi?id=124455

Patch by Julien Brianceau <​[email protected]> on 2013-11-16
Reviewed by Oliver Hunt.

Fix LLINT implementation for sh4 architecture to handle properly load and store operations with pr register.

• offlineasm/sh4.rb:

File:

• trunk/Source/JavaScriptCore/offlineasm/sh4.rb (modified) (2 diffs)

trunk/Source/JavaScriptCore/offlineasm/sh4.rb

@@ -459 +459 @@
                     newList << Instruction.new(codeOrigin, "move", [node.operands[0], tmp])
                     newList << Instruction.new(codeOrigin, node.opcode, [tmp])
+                else
+                    newList << node
+                end
+            else
+                newList << node
+            end
+        else
+            newList << node
+        end
+    }
+    newList
+end
+
+
+#
+# Lowering of misplaced special registers for SH4. For example:
+#
+# storep pr, foo
+#
+# becomes:
+#
+# stspr tmp
+# storep tmp, foo
+#
+
+def sh4LowerMisplacedSpecialRegisters(list)
+    newList = []
+    list.each {
+        | node |
+        if node.is_a? Instruction
+            case node.opcode
+            when "loadi", "loadis", "loadp"
+                if node.operands[1].is_a? RegisterID and node.operands[1].sh4Operand == "pr"
+                    tmp = Tmp.new(codeOrigin, :gpr)
+                    newList << Instruction.new(codeOrigin, node.opcode, [node.operands[0], tmp])
+                    newList << Instruction.new(codeOrigin, "ldspr", [tmp])
+                else
+                    newList << node
+                end
+            when "storei", "storep"
+                if node.operands[0].is_a? RegisterID and node.operands[0].sh4Operand == "pr"
+                    tmp = Tmp.new(codeOrigin, :gpr)
+                    newList << Instruction.new(codeOrigin, "stspr", [tmp])
+                    newList << Instruction.new(codeOrigin, node.opcode, [tmp, node.operands[1]])
                 else
                     newList << node
@@ -681 +725 @@
         result = sh4LowerMisplacedLabels(result)
         result = riscLowerMisplacedAddresses(result)
+        result = sh4LowerMisplacedSpecialRegisters(result)
 
         result = assignRegistersToTemporaries(result, :gpr, SH4_TMP_GPRS)