mips without optimize

2025-12-12 20:14:00 +08:00
parent 84827838e2
commit c94bebf37b
130 changed files with 5462 additions and 4182 deletions
--- a/midend/llvm/instr/GepInstr.java
+++ b/midend/llvm/instr/GepInstr.java
@@ -1,57 +1,86 @@
-package midend.llvm.instr;
-
-import midend.llvm.type.IrArrayType;
-import midend.llvm.type.IrPointerType;
-import midend.llvm.type.IrType;
-import midend.llvm.value.IrValue;
-
-public class GepInstr extends IrInstr {
-    public GepInstr(IrValue pointer, IrValue offset, String name) {
-        super(new IrPointerType(getTargetType(pointer)), name, IrInstrType.GEP);
-        addUse(pointer);
-        addUse(offset);
-    }
-
-    public IrValue getPointer() {
-        return getUse(0);
-    }
-
-    public IrValue getOffset() {
-        return getUse(1);
-    }
-
-    public String toString() {
-        IrValue pointer = this.getPointer();
-        IrValue offset = this.getOffset();
-
-        IrPointerType pointerType = (IrPointerType) pointer.getType();
-        IrType targetType = pointerType.getPointeeType();
-
-        if (targetType instanceof IrArrayType arrayType) {
-            return getName() + " = getelementptr inbounds " +
-                    arrayType + ", " +
-                    pointerType + " " +
-                    pointer.getName() + ", i32 0, " +
-                    offset.getType() + " " +
-                    offset.getName();
-        } else {
-            return getName() + " = getelementptr inbounds " +
-                    targetType + ", " +
-                    pointerType + " " +
-                    pointer.getName() + ", " +
-                    offset.getType() + " " +
-                    offset.getName();   
-        }
-    }
-
-    public static IrType getTargetType(IrValue pointer) {
-        IrType targetType = ((IrPointerType) pointer.getType()).getPointeeType();
-        if (targetType instanceof IrArrayType arrayType) {
-            return arrayType.getElementType();
-        } else if (targetType instanceof IrPointerType pointerType) {
-            return pointerType.getPointeeType();
-        } else {
-            return targetType;
-        }
-    }
-}
+package midend.llvm.instr;
+
+import backend.mips.MipsBuilder;
+import backend.mips.Register;
+import backend.mips.instr.MipsAlu;
+import backend.mips.instr.type.MipsAluType;
+import midend.llvm.constant.IrConstantInt;
+import midend.llvm.type.IrArrayType;
+import midend.llvm.type.IrPointerType;
+import midend.llvm.type.IrType;
+import midend.llvm.value.IrValue;
+
+public class GepInstr extends IrInstr {
+    public GepInstr(IrValue pointer, IrValue offset, String name) {
+        super(new IrPointerType(getTargetType(pointer)), name, IrInstrType.GEP);
+        addUse(pointer);
+        addUse(offset);
+    }
+
+    public IrValue getPointer() {
+        return getUse(0);
+    }
+
+    public IrValue getOffset() {
+        return getUse(1);
+    }
+
+    public String toString() {
+        IrValue pointer = this.getPointer();
+        IrValue offset = this.getOffset();
+
+        IrPointerType pointerType = (IrPointerType) pointer.getType();
+        IrType targetType = pointerType.getPointeeType();
+
+        if (targetType instanceof IrArrayType arrayType) {
+            return getName() + " = getelementptr inbounds " +
+                    arrayType + ", " +
+                    pointerType + " " +
+                    pointer.getName() + ", i32 0, " +
+                    offset.getType() + " " +
+                    offset.getName();
+        } else {
+            return getName() + " = getelementptr inbounds " +
+                    targetType + ", " +
+                    pointerType + " " +
+                    pointer.getName() + ", " +
+                    offset.getType() + " " +
+                    offset.getName();   
+        }
+    }
+
+    public static IrType getTargetType(IrValue pointer) {
+        IrType targetType = ((IrPointerType) pointer.getType()).getPointeeType();
+        if (targetType instanceof IrArrayType arrayType) {
+            return arrayType.getElementType();
+        } else if (targetType instanceof IrPointerType pointerType) {
+            return pointerType.getPointeeType();
+        } else {
+            return targetType;
+        }
+    }
+
+    public void toMips() {
+        Register pointerReg = MipsBuilder.getRegister(getPointer());
+        if (pointerReg == null) {
+            pointerReg = Register.K0;
+        }
+        loadValueToReg(getPointer(), pointerReg);
+        Register offsetReg = MipsBuilder.getRegister(getOffset());
+        if (offsetReg == null) {
+            offsetReg = Register.K1;
+        }
+        Register resultReg = MipsBuilder.getRegister(this);
+        if (resultReg == null) {
+            resultReg = Register.K1;
+        }
+        if (getOffset() instanceof IrConstantInt intOffset) {
+            new MipsAlu(MipsAluType.ADDI, resultReg, pointerReg, 4 * intOffset.getValue());
+        } else {
+            loadValueToReg(getOffset(), offsetReg);
+            new MipsAlu(MipsAluType.SLL, resultReg, offsetReg, 2);
+            new MipsAlu(MipsAluType.ADDU, resultReg, resultReg, pointerReg);
+        }
+        saveResult(this, resultReg);
+    }
+}