at.dms.kjc.sir.lowering
Class IntroduceMultiPops

java.lang.Object
  at.dms.kjc.EmptyAttributeVisitor
      at.dms.kjc.ReplacingVisitor
          at.dms.kjc.SLIRReplacingVisitor
              at.dms.kjc.sir.lowering.IntroduceMultiPops

All Implemented Interfaces:

Constants, AttributeVisitor<Object>, SLIRAttributeVisitor<Object>

public class IntroduceMultiPops
extends SLIRReplacingVisitor

Introduce multi-pops.

A single SIRPopExpression may represent multiple pops.
This pass takes sequences of 'pop' expressions for which the result is not used and forms a single SIRPopExpression containing the pop count.

Author:

Allyn Dimock

Field Summary

static boolean

debug Set to true to print program before and after this pass.

Fields inherited from class at.dms.kjc.EmptyAttributeVisitor

forwards

Fields inherited from interface at.dms.kjc.Constants

CMP_VERSION, JAV_CLASS, JAV_CLONE, JAV_CLONEABLE, JAV_CONSTRUCTOR, JAV_ERROR, JAV_EXCEPTION, JAV_INIT, JAV_LENGTH, JAV_NAME_SEPARATOR, JAV_OBJECT, JAV_OUTER_THIS, JAV_RUNTIME, JAV_RUNTIME_EXCEPTION, JAV_STATIC_INIT, JAV_STRING, JAV_STRINGBUFFER, JAV_THIS, JAV_THROWABLE, OPE_BAND, OPE_BNOT, OPE_BOR, OPE_BSR, OPE_BXOR, OPE_EQ, OPE_GE, OPE_GT, OPE_LE, OPE_LNOT, OPE_LT, OPE_MINUS, OPE_NE, OPE_PERCENT, OPE_PLUS, OPE_POSTDEC, OPE_POSTINC, OPE_PREDEC, OPE_PREINC, OPE_SIMPLE, OPE_SL, OPE_SLASH, OPE_SR, OPE_STAR, TID_ARRAY, TID_BIT, TID_BOOLEAN, TID_BYTE, TID_CHAR, TID_CLASS, TID_DOUBLE, TID_FLOAT, TID_INT, TID_LONG, TID_SHORT, TID_VECTOR, TID_VOID, VECTOR_EMPTY

Fields inherited from interface at.dms.classfile.Constants

ACC_ABSTRACT, ACC_FINAL, ACC_INLINE, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_TRANSIENT, ACC_VOLATILE, ATT_CODE, ATT_CONSTANTVALUE, ATT_DEPRECATED, ATT_EXCEPTIONS, ATT_GENERIC, ATT_INNERCLASSES, ATT_LINENUMBERTABLE, ATT_LOCALVARIABLETABLE, ATT_SOURCEFILE, ATT_SYNTHETIC, CST_CLASS, CST_DOUBLE, CST_FIELD, CST_FLOAT, CST_INTEGER, CST_INTERFACEMETHOD, CST_LONG, CST_METHOD, CST_NAMEANDTYPE, CST_STRING, CST_UTF8, ENV_DEBUG_MODE, ENV_USE_CACHE, JAVA_MAGIC, JAVA_MAJOR, JAVA_MINOR, MAX_CODE_PER_METHOD, opc_aaload, opc_aastore, opc_aconst_null, opc_aload, opc_aload_0, opc_aload_1, opc_aload_2, opc_aload_3, opc_anewarray, opc_areturn, opc_arraylength, opc_astore, opc_astore_0, opc_astore_1, opc_astore_2, opc_astore_3, opc_athrow, opc_baload, opc_bastore, opc_bipush, opc_caload, opc_castore, opc_checkcast, opc_d2f, opc_d2i, opc_d2l, opc_dadd, opc_daload, opc_dastore, opc_dcmpg, opc_dcmpl, opc_dconst_0, opc_dconst_1, opc_ddiv, opc_dload, opc_dload_0, opc_dload_1, opc_dload_2, opc_dload_3, opc_dmul, opc_dneg, opc_drem, opc_dreturn, opc_dstore, opc_dstore_0, opc_dstore_1, opc_dstore_2, opc_dstore_3, opc_dsub, opc_dup, opc_dup_x1, opc_dup_x2, opc_dup2, opc_dup2_x1, opc_dup2_x2, opc_f2d, opc_f2i, opc_f2l, opc_fadd, opc_faload, opc_fastore, opc_fcmpg, opc_fcmpl, opc_fconst_0, opc_fconst_1, opc_fconst_2, opc_fdiv, opc_fload, opc_fload_0, opc_fload_1, opc_fload_2, opc_fload_3, opc_fmul, opc_fneg, opc_frem, opc_freturn, opc_fstore, opc_fstore_0, opc_fstore_1, opc_fstore_2, opc_fstore_3, opc_fsub, opc_getfield, opc_getstatic, opc_goto, opc_goto_w, opc_i2b, opc_i2c, opc_i2d, opc_i2f, opc_i2l, opc_i2s, opc_iadd, opc_iaload, opc_iand, opc_iastore, opc_iconst_0, opc_iconst_1, opc_iconst_2, opc_iconst_3, opc_iconst_4, opc_iconst_5, opc_iconst_m1, opc_idiv, opc_if_acmpeq, opc_if_acmpne, opc_if_icmpeq, opc_if_icmpge, opc_if_icmpgt, opc_if_icmple, opc_if_icmplt, opc_if_icmpne, opc_ifeq, opc_ifge, opc_ifgt, opc_ifle, opc_iflt, opc_ifne, opc_ifnonnull, opc_ifnull, opc_iinc, opc_iload, opc_iload_0, opc_iload_1, opc_iload_2, opc_iload_3, opc_imul, opc_ineg, opc_instanceof, opc_invokeinterface, opc_invokespecial, opc_invokestatic, opc_invokevirtual, opc_ior, opc_irem, opc_ireturn, opc_ishl, opc_ishr, opc_istore, opc_istore_0, opc_istore_1, opc_istore_2, opc_istore_3, opc_isub, opc_iushr, opc_ixor, opc_jsr, opc_jsr_w, opc_l2d, opc_l2f, opc_l2i, opc_ladd, opc_laload, opc_land, opc_lastore, opc_lcmp, opc_lconst_0, opc_lconst_1, opc_ldc, opc_ldc_w, opc_ldc2_w, opc_ldiv, opc_lload, opc_lload_0, opc_lload_1, opc_lload_2, opc_lload_3, opc_lmul, opc_lneg, opc_lookupswitch, opc_lor, opc_lrem, opc_lreturn, opc_lshl, opc_lshr, opc_lstore, opc_lstore_0, opc_lstore_1, opc_lstore_2, opc_lstore_3, opc_lsub, opc_lushr, opc_lxor, opc_monitorenter, opc_monitorexit, opc_multianewarray, opc_new, opc_newarray, opc_nop, opc_pop, opc_pop2, opc_putfield, opc_putstatic, opc_ret, opc_return, opc_saload, opc_sastore, opc_sipush, opc_swap, opc_tableswitch, opc_wide, opc_xxxunusedxxx, POO_ASCII_CONSTANT, POO_CLASS_CONSTANT, POO_DOUBLE_CONSTANT, POO_FLOAT_CONSTANT, POO_INTEGER_CONSTANT, POO_LONG_CONSTANT, POO_NAT_CONSTANT, POO_REF_CONSTANT, POO_STRING_CONSTANT, TYP_ADDRESS, TYP_DOUBLE, TYP_FLOAT, TYP_INT, TYP_LONG, TYP_REFERENCE, TYP_VOID

Method Summary

static void	doit(SIRStream str) Walk stream structure and replace multiple pops from single SIRPopExpression.
Object	visitBlockStatement(JBlock oldBlock, JavaStyleComment[] comments) prints an expression statement
Object	visitCompoundStatement(JCompoundStatement self, JStatement[] body) prints a compound statement
Object	visitForStatement(JForStatement self, JStatement init, JExpression cond, JStatement incr, JStatement body) visits a for statement
Object	visitMethodDeclaration(JMethodDeclaration self, int modifiers, CType returnType, String ident, JFormalParameter[] parameters, CClassType[] exceptions, JBlock body) prints a method declaration

Methods inherited from class at.dms.kjc.SLIRReplacingVisitor

visitCreatePortalExpression, visitDynamicToken, visitFileReader, visitFileWriter, visitFunctionPointer, visitInitStatement, visitInterfaceTable, visitLatency, visitLatencyMax, visitLatencyRange, visitLatencySet, visitMainFunction, visitMarker, visitMessageStatement, visitNode, visitPeekExpression, visitPopExpression, visitPortal, visitPrintStatement, visitPushExpression, visitRangeExpression, visitRegReceiverStatement, visitRegSenderStatement, visitSetBodyOfFeedback, visitSetChild, visitSetDecode, visitSetDelay, visitSetEncode, visitSetJoiner, visitSetLoopOfFeedback, visitSetParallelStream, visitSetPeek, visitSetPop, visitSetPush, visitSetSplitter, visitSetStreamType, visitSetTape, visitSetWork, visitVectorLiteral

Methods inherited from class at.dms.kjc.ReplacingVisitor

visitArgs, visitArrayAccessExpression, visitArrayLengthExpression, visitAssignmentExpression, visitBinaryExpression, visitBitwiseComplementExpression, visitBitwiseExpression, visitCastExpression, visitCompoundAssignmentExpression, visitConditionalExpression, visitDoStatement, visitEmittedTextExpression, visitEqualityExpression, visitExpressionListStatement, visitExpressionStatement, visitFieldDeclaration, visitFieldExpression, visitFormalParameters, visitIfStatement, visitInstanceofExpression, visitLabeledStatement, visitLogicalComplementExpression, visitMethodCallExpression, visitNameExpression, visitNewArrayExpression, visitParenthesedExpression, visitPostfixExpression, visitPrefixExpression, visitQualifiedAnonymousCreation, visitQualifiedInstanceCreation, visitRelationalExpression, visitReturnStatement, visitShiftExpression, visitSwitchGroup, visitSwitchLabel, visitSwitchStatement, visitSynchronizedStatement, visitThisExpression, visitThrowStatement, visitUnaryMinusExpression, visitUnaryPlusExpression, visitUnaryPromoteExpression, visitVariableDeclarationStatement, visitVariableDefinition, visitWhileStatement

Methods inherited from class at.dms.kjc.EmptyAttributeVisitor

visitArrayInitializer, visitBooleanLiteral, visitBreakStatement, visitByteLiteral, visitCatchClause, visitCharLiteral, visitClassBody, visitClassDeclaration, visitClassExpression, visitClassImport, visitComment, visitComments, visitCompilationUnit, visitConstructorCall, visitConstructorDeclaration, visitContinueStatement, visitDoubleLiteral, visitEmptyStatement, visitFloatLiteral, visitInnerClassDeclaration, visitInterfaceDeclaration, visitIntLiteral, visitJavadoc, visitLocalVariableExpression, visitLongLiteral, visitNullLiteral, visitPackageImport, visitPackageName, visitShortLiteral, visitStringLiteral, visitSuperExpression, visitTryCatchStatement, visitTryFinallyStatement, visitTypeDeclarationStatement, visitTypeNameExpression, visitUnqualifiedAnonymousCreation, visitUnqualifiedInstanceCreation

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface at.dms.kjc.AttributeVisitor

visitArrayAccessExpression, visitArrayInitializer, visitArrayLengthExpression, visitAssignmentExpression, visitBinaryExpression, visitBitwiseComplementExpression, visitBitwiseExpression, visitBooleanLiteral, visitBreakStatement, visitByteLiteral, visitCastExpression, visitCatchClause, visitCharLiteral, visitClassBody, visitClassDeclaration, visitClassExpression, visitClassImport, visitComment, visitComments, visitCompilationUnit, visitCompoundAssignmentExpression, visitConditionalExpression, visitConstructorCall, visitConstructorDeclaration, visitContinueStatement, visitDoStatement, visitDoubleLiteral, visitEmittedTextExpression, visitEmptyStatement, visitEqualityExpression, visitExpressionListStatement, visitExpressionStatement, visitFieldDeclaration, visitFieldExpression, visitFloatLiteral, visitFormalParameters, visitIfStatement, visitInnerClassDeclaration, visitInstanceofExpression, visitInterfaceDeclaration, visitIntLiteral, visitJavadoc, visitLabeledStatement, visitLocalVariableExpression, visitLogicalComplementExpression, visitLongLiteral, visitMethodCallExpression, visitNameExpression, visitNewArrayExpression, visitNullLiteral, visitPackageImport, visitPackageName, visitParenthesedExpression, visitPostfixExpression, visitPrefixExpression, visitQualifiedAnonymousCreation, visitQualifiedInstanceCreation, visitRelationalExpression, visitReturnStatement, visitShiftExpression, visitShortLiteral, visitStringLiteral, visitSuperExpression, visitSwitchGroup, visitSwitchLabel, visitSwitchStatement, visitSynchronizedStatement, visitThisExpression, visitThrowStatement, visitTryCatchStatement, visitTryFinallyStatement, visitTypeDeclarationStatement, visitTypeNameExpression, visitUnaryMinusExpression, visitUnaryPlusExpression, visitUnaryPromoteExpression, visitUnqualifiedAnonymousCreation, visitUnqualifiedInstanceCreation, visitVariableDeclarationStatement, visitVariableDefinition, visitWhileStatement

Field Detail

debug

public static boolean debug

Set to true to print program before and after this pass.

Method Detail

doit

public static void doit(SIRStream str)

Walk stream structure and replace multiple pops from single SIRPopExpression.

Parameters:

str - a stream to work on

visitMethodDeclaration

public Object visitMethodDeclaration(JMethodDeclaration self,
                                     int modifiers,
                                     CType returnType,
                                     String ident,
                                     JFormalParameter[] parameters,
                                     CClassType[] exceptions,
                                     JBlock body)

Description copied from class: EmptyAttributeVisitor

prints a method declaration

Specified by:

visitMethodDeclaration in interface AttributeVisitor<Object>

Overrides:

visitMethodDeclaration in class EmptyAttributeVisitor

visitCompoundStatement

public Object visitCompoundStatement(JCompoundStatement self,
                                     JStatement[] body)

Description copied from class: ReplacingVisitor

prints a compound statement

Specified by:

visitCompoundStatement in interface AttributeVisitor<Object>

Overrides:

visitCompoundStatement in class ReplacingVisitor

visitBlockStatement

public Object visitBlockStatement(JBlock oldBlock,
                                  JavaStyleComment[] comments)

Description copied from class: ReplacingVisitor

prints an expression statement

Specified by:

visitBlockStatement in interface AttributeVisitor<Object>

Overrides:

visitBlockStatement in class ReplacingVisitor

visitForStatement

public Object visitForStatement(JForStatement self,
                                JStatement init,
                                JExpression cond,
                                JStatement incr,
                                JStatement body)

Description copied from class: ReplacingVisitor

visits a for statement

Specified by:

visitForStatement in interface AttributeVisitor<Object>

Overrides:

visitForStatement in class ReplacingVisitor