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package com.seaofnodes.simple;
import com.seaofnodes.simple.codegen.CodeGen;
import com.seaofnodes.simple.node.cpus.arm.arm;
import com.seaofnodes.simple.node.cpus.riscv.riscv;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import org.junit.Ignore;
import org.junit.Test;
import static org.junit.Assert.*;
public class Chapter21Test {
@Test @Ignore
public void testJig() throws IOException {
String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/jig.smp"));
testCPU(src,"x86_64_v2", "Win64" ,-1,null);
testCPU(src,"riscv" , "SystemV",-1,null);
testCPU(src,"arm" , "SystemV",-1,null);
}
static void testCPU( String src, String cpu, String os, int spills, String stop ) {
CodeGen code = new CodeGen(src).driver(CodeGen.Phase.Encoding,cpu,os);
int delta = spills>>3;
if( delta==0 ) delta = 1;
if( spills != -1 )
assertEquals("Expect spills:",spills,code._regAlloc._spillScaled,delta);
if( stop != null )
assertEquals(stop, code._stop.toString());
}
@Test public void testBasic1() {
String src = "return arg | 2;";
testCPU(src,"x86_64_v2", "SystemV",1,"return (ori,mov(arg));");
testCPU(src,"riscv" , "SystemV",0,"return ( arg | #2 );");
testCPU(src,"arm" , "SystemV",0,"return (ori,arg);");
}
@Test public void testInfinite() {
String src = "struct S { int i; }; S !s = new S; while(1) s.i++; return s.i;";
testCPU(src,"x86_64_v2", "SystemV",0,"return Top;");
testCPU(src,"riscv" , "SystemV",2,"return Top;");
testCPU(src,"arm" , "SystemV",2,"return Top;");
}
@Test
public void testArray1() throws IOException {
String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/array1.smp"));
testCPU(src,"x86_64_v2", "SystemV",-1,"return .[];");
testCPU(src,"riscv" , "SystemV", 7,"return (add,.[],(mul,.[],1000));");
testCPU(src,"arm" , "SystemV", 5,"return (add,.[],(mul,.[],1000));");
}
@Test
public void testAntiDeps1() throws IOException {
String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/antiDep1.smp"));
testCPU(src,"x86_64_v2", "SystemV", 7,"return mov(mov(S));");
testCPU(src,"riscv" , "SystemV",10,"return mov(mov(S));");
testCPU(src,"arm" , "SystemV",10,"return mov(mov(S));");
}
@Test
public void testString() throws IOException {
String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/stringHash.smp"));
testCPU(src,"x86_64_v2", "SystemV", 9,null);
testCPU(src,"riscv" , "SystemV", 5,null);
testCPU(src,"arm" , "SystemV", 3,null);
}
@Test public void testStringExport() throws IOException {
TestC.run("stringHash", 9);
}
@Test public void testLoop2() throws IOException {
String src = Files.readString(Path.of("src/test/java/com/seaofnodes/simple/progs/loop2.smp"));
testCPU(src,"x86_64_v2", "Win64" ,0,"return (inc,Phi(Loop,0,inc));");
testCPU(src,"riscv" , "SystemV",0,"return ( Phi(Loop,0,addi) + #1 );");
testCPU(src,"arm" , "SystemV",0,"return (inc,Phi(Loop,0,inc));");
}
@Test public void testNewtonExport() throws IOException {
String result = """
0 0.000000 (0)
1 1.000000 (0)
2 1.414214 (2.22045e-16)
3 1.732051 (0)
4 2.000000 (0)
5 2.236068 (0)
6 2.449490 (0)
7 2.645751 (0)
8 2.828427 (4.44089e-16)
9 3.000000 (0)
""";
TestC.run("newtonFloat",result,34);
EvalRisc5 R5 = TestRisc5.build("newtonFloat", 0, 10, false);
R5.fregs[riscv.FA0 - riscv.F_OFFSET] = 3.0;
int trap_r5 = R5.step(1000);
assertEquals(0,trap_r5);
// Return register A0 holds fib(8)==55
assertEquals(1.732051,R5.fregs[riscv.FA0 - riscv.F_OFFSET], 0.00001);
// arm
EvalArm64 A5 = TestArm64.build("newtonFloat", 0, 10, false);
A5.fregs[arm.D0 - arm.D_OFFSET] = 3.0;
int trap_arm = A5.step(1000);
assertEquals(0,trap_arm);
assertEquals(1.732051, A5.fregs[arm.D0 - arm.D_OFFSET], 0.00001);
}
@Test public void testSieve() throws IOException {
// The primes
int[] primes = new int[] { 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, };
SB sb = new SB().p(primes.length).p("[");
for( int prime : primes )
sb.p(prime).p(", ");
String sprimes = sb.p("]").toString();
// Compile, link against native C; expect the above string of primes to be printed out by C
TestC.run("sieve",sprimes, 257);
// Evaluate on RISC5 emulator; expect return of an array of primes in
// the simulated heap.
EvalRisc5 R5 = TestRisc5.build("sieve", 100, 160, false);
int trap = R5.step(10000);
assertEquals(0,trap);
// Return register A0 holds sieve(100)
int ary = (int)R5.regs[riscv.A0];
// Memory layout starting at ary(length,pad, prime1, primt2, prime3, prime4)
assertEquals(primes.length, R5.ld4s(ary));
for( int i=0; i<primes.length; i++ )
assertEquals(primes[i], R5.ld4s(ary + 4 + i*4));
// Evaluate on ARM5 emulator; expect return of an array of primes in
// the simulated heap.
EvalArm64 A5 = TestArm64.build("sieve", 100, 160, false);
int trap_arm = A5.step(10000);
assertEquals(0, trap_arm);
int ary_arm = (int)A5.regs[arm.X0];
// Memory layout starting at ary(length,pad, prime1, primt2, prime3, prime4)
assertEquals(primes.length, A5.ld4s(ary_arm));
for( int i = 0; i<primes.length; i++ )
assertEquals(primes[i], A5.ld4s(ary_arm + 4 + i * 4));
}
@Test public void testFibExport() throws IOException {
String fib = "[1, 1, 2, 3, 5, 8, 13, 21, 34, 55]";
TestC.run("fib", fib, 24);
EvalRisc5 R5 = TestRisc5.build("fib", 9, 17, false);
int trap = R5.step(100);
assertEquals(0,trap);
// Return register A0 holds fib(8)==55
assertEquals(55,R5.regs[riscv.A0]);
// arm
EvalArm64 A5 = TestArm64.build("fib", 9, 17, false);
int trap_arm = A5.step(100);
assertEquals(0,trap_arm);
// Return register X0 holds fib(8)==55
assertEquals(55, A5.regs[arm.X0]);
}
@Test public void testPerson() throws IOException {
String person = "6\n";
TestC.run("person", person, 0);
// Memory layout starting at PS:
int ps = 1<<16; // Person array pointer starts at heap start
// Person[3] = { len,pad,P0,P1,P2 }; // sizeof = 4*8
// P0 = { age } // sizeof=8
int p0 = ps+4*8+0*8;
// P1 = { age } // sizeof=8
int p1 = ps+4*8+1*8;
// P2 = { age } // sizeof=8
int p2 = ps+4*8+2*8;
EvalRisc5 R5 = TestRisc5.build("person", ps, 0, false);
R5.regs[riscv.A1] = 1; // Index 1
R5.st8(ps,3); // Length
R5.st8(ps+1*8,p0);
R5.st8(ps+2*8,p1);
R5.st8(ps+3*8,p2);
R5.st8(p0, 5); // age= 5
R5.st8(p1,17); // age=17
R5.st8(p2,60); // age=60
int trap = R5.step(100);
assertEquals(0,trap);
assertEquals( 5+0,R5.ld8(p0));
assertEquals(17+1,R5.ld8(p1));
assertEquals(60+0,R5.ld8(p2));
EvalArm64 A5 = TestArm64.build("person", ps, 0, false);
A5.regs[arm.X1] = 1; // Index 1
A5.st8(ps, 3);
A5.st8(ps+1*8,p0);
A5.st8(ps+2*8,p1);
A5.st8(ps+3*8,p2);
A5.st8(p0, 5); // age= 5
A5.st8(p1,17); // age=17
A5.st8(p2,60); // age=60
int trap_arm = A5.step(100);
assertEquals(0,trap_arm);
assertEquals( 5+0, A5.ld8(p0));
assertEquals(17+1, A5.ld8(p1));
assertEquals(60+0, A5.ld8(p2));
}
@Test public void testArgCount() throws IOException {
// Test passes more args than registers in Sys5, which is far far more
// than what Win64 allows - so Win64 gets a lot more spills here.
String arg_count = "191.000000\n";
TestC.run("arg_count", arg_count,
TestC.CALL_CONVENTION.equals("Win64") ? 42 : 15);
EvalRisc5 R5 = TestRisc5.build("no_stack_arg_count", 0, 0, false);
// Todo: handle stack(imaginary stack in emulator)
// pass in float arguments
R5.fregs[riscv.FA0 - riscv.F_OFFSET] = 1.1;
R5.fregs[riscv.FA1 - riscv.F_OFFSET] = 1.1;
R5.fregs[riscv.FA2 - riscv.F_OFFSET] = 1.1;
R5.fregs[riscv.FA3 - riscv.F_OFFSET] = 1.1;
R5.fregs[riscv.FA4 - riscv.F_OFFSET] = 1.1;
R5.fregs[riscv.FA5 - riscv.F_OFFSET] = 1.1;
R5.fregs[riscv.FA6 - riscv.F_OFFSET] = 1.1;
R5.fregs[riscv.FA7 - riscv.F_OFFSET] = 1.1;
// a0 is passed in arg
R5.regs[riscv.A1] = 2;
R5.regs[riscv.A2] = 2;
R5.regs[riscv.A3] = 2;
R5.regs[riscv.A4] = 2;
R5.regs[riscv.A5] = 2;
R5.regs[riscv.A6] = 2;
R5.regs[riscv.A7] = 2;
int trap = R5.step(100);
assertEquals(0,trap);
double result = R5.fregs[riscv.FA0 - riscv.F_OFFSET];
assertEquals(22.8, result, 0.00001);
// arm
EvalArm64 A5 = TestArm64.build("no_stack_arg_count", 0, 0, false);
A5.fregs[arm.D0 - arm.D_OFFSET] = 1.1;
A5.fregs[arm.D1 - arm.D_OFFSET] = 1.1;
A5.fregs[arm.D2 - arm.D_OFFSET] = 1.1;
A5.fregs[arm.D3 - arm.D_OFFSET] = 1.1;
A5.fregs[arm.D4 - arm.D_OFFSET] = 1.1;
A5.fregs[arm.D5 - arm.D_OFFSET] = 1.1;
A5.fregs[arm.D6 - arm.D_OFFSET] = 1.1;
A5.fregs[arm.D7 - arm.D_OFFSET] = 1.1;
A5.regs[arm.X1] = 2;
A5.regs[arm.X2] = 2;
A5.regs[arm.X3] = 2;
A5.regs[arm.X4] = 2;
A5.regs[arm.X5] = 2;
A5.regs[arm.X6] = 2;
A5.regs[arm.X7] = 2;
int trap_arm = A5.step(100);
assertEquals(0,trap_arm);
double result1 = A5.fregs[arm.D0 - arm.D_OFFSET];
assertEquals(22.8, result1, 0.00001);
}
}
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