private void AssertSmallConst(string sExp, int shift, uint mult)
{
var m = new ProcedureBuilder();
var c = Constant.Int32((int)mult);
var r1 = m.Reg32("r1", 1);
var r2 = m.Reg32("r2", 2);
var r2_r1 = m.Frame.EnsureSequence(r2.Storage, r1.Storage, PrimitiveType.Word64);
var ass = m.Assign(r2_r1, m.SMul(r1, c));
m.Emit(new AliasAssignment(r2, m.Slice(PrimitiveType.Word32, r2_r1, 32)));
if (shift != 0)
m.Assign(r2, m.Sar(r2, shift));
var proc = m.Procedure;
var ssa = new SsaTransform(
null,
proc,
null,
proc.CreateBlockDominatorGraph(),
new HashSet<RegisterStorage>()).Transform();
var ctx = new SsaEvaluationContext(null, ssa.Identifiers);
var rule = new ConstDivisionImplementedByMultiplication(ssa);
ctx.Statement = proc.EntryBlock.Succ[0].Statements[0];
Assert.IsTrue(rule.Match(ass));
ass = rule.TransformInstruction();
Assert.AreEqual(sExp, ass.Src.ToString());
}
public void Test1()
{
var m = new ProcedureBuilder();
var id = m.Local32("id");
var x = m.Local32("x");
var stm = m.Assign(x, m.IAdd(m.SMul(id, 4), id));
}
public void TrcoArrayExpression()
{
var b = new Identifier("base", PrimitiveType.Word32, null);
var i = new Identifier("idx", PrimitiveType.Word32, null);
var s = Constant.Word32(4);
ProcedureBuilder m = new ProcedureBuilder();
// e ::= Mem[(b+0x1003000)+(i*s):word16]
Expression e = m.Load(
PrimitiveType.Word16,
m.IAdd(m.IAdd(b, Constant.Word32(0x10030000)),
m.SMul(i, s)));
coll = CreateCollector();
e = e.Accept(en);
e.Accept(eqb);
e.Accept(coll);
Verify(null, "Typing/TrcoArrayExpression.txt");
}