1 files changed, 0 insertions, 123 deletions
diff --git a/src/test/java/com/seaofnodes/simple/codegen/X86EncodingTest.java b/src/test/java/com/seaofnodes/simple/codegen/X86EncodingTest.java
deleted file mode 100644
index 0914d916..00000000
--- a/src/test/java/com/seaofnodes/simple/codegen/X86EncodingTest.java
+++ /dev/null
@@ -1,123 +0,0 @@
-package com.seaofnodes.simple.codegen;
-
-import com.seaofnodes.simple.node.Node;
-import com.seaofnodes.simple.node.cpus.x86_64_v2.CmpMemX86;
-import com.seaofnodes.simple.node.cpus.x86_64_v2.NotX86;
-import com.seaofnodes.simple.node.cpus.x86_64_v2.MulIX86;
-import org.junit.Test;
-import static org.junit.Assert.*;
-
-public class X86EncodingTest {
-
-    @Test
-    public void testLogicalNotRegisters() {
-        CodeGen code = new CodeGen("return !arg;")
-            .driver(CodeGen.Phase.Select, "x86_64_v2", "SystemV");
-        var not = code._stop.walk(n -> n instanceof NotX86 ? (NotX86)n : null);
-        assertNotNull("Must exercise logical not", not);
-        int[][] registers = {{0,0}, {1,1}, {7,7}, {9,9}, {1,9}, {9,1}, {6,0}, {15,8}};
-        // TEST src,src; SETZ dstb; MOVZX dst32,dstb. Include overlapping
-        // registers, low-byte registers requiring REX, and extended registers.
-        String[] expected = {
-            "4885c00f94c00fb6c0", "4885c90f94c10fb6c9",
-            "4885ff400f94c7400fb6ff", "4d85c9410f94c1450fb6c9",
-            "4d85c90f94c10fb6c9", "4885c9410f94c1450fb6c9",
-            "4885c0400f94c6400fb6f6", "4d85c0410f94c7450fb6ff"
-        };
-        for (int i = 0; i < registers.length; i++) {
-            int dst = registers[i][0], src = registers[i][1];
-            var enc = new FixedRegisterEncoding(code, not, dst, not.in(1), src);
-            not.encoding(enc);
-            assertArrayEquals("Logical not dst=" + dst + ", src=" + src,
-                java.util.HexFormat.of().parseHex(expected[i]), enc._bits.toByteArray());
-        }
-    }
-
-    @Test
-    public void testLogicalNotExecution() throws java.io.IOException {
-        var dir = java.nio.file.Path.of("build/objs");
-        java.nio.file.Files.createDirectories(dir);
-        java.nio.file.Files.writeString(dir.resolve("x86LogicalNot.smp"),
-            "val logicalNot = { int x -> return !x; };");
-        java.nio.file.Files.writeString(dir.resolve("x86LogicalNot.c"), """
-            #include <limits.h>
-            extern long long logicalNot(long long);
-            int main(void) {
-                long long inputs[] = {0, 1, -1, LLONG_MIN, LLONG_MAX, 1LL << 32};
-                for (unsigned i = 0; i < sizeof(inputs)/sizeof(inputs[0]); i++)
-                    if (logicalNot(inputs[i]) != (inputs[i] == 0)) return 1;
-                return 0;
-            }
-            """);
-        com.seaofnodes.simple.TestC.run("build/objs", "x86LogicalNot", "", -1);
-    }
-
-    @Test
-    public void testMultiplyImmediateRegisters() {
-        // Destination, source, expected REX and ModRM. Cross the register-8
-        // boundary in both directions, with low/low and high/high controls.
-        int[][] cases = {{1, 9, 0x49, 0xC9}, {9, 1, 0x4C, 0xC9},
-                         {1, 2, 0x48, 0xCA}, {9, 10, 0x4D, 0xCA}};
-        for (int immediate : new int[]{11, -11, 123456789, -123456789}) {
-            CodeGen code = new CodeGen("return arg * " + immediate + ";")
-                .driver(CodeGen.Phase.Select, "x86_64_v2", "SystemV");
-            var mul = code._stop.walk(n -> n instanceof MulIX86 ? n : null);
-            assertNotNull("Must exercise immediate multiply", mul);
-            for (int[] regs : cases) {
-                var enc = new FixedRegisterEncoding(
-                    code, mul, regs[0], mul.in(1), regs[1]);
-                ((MulIX86)mul).encoding(enc);
-                boolean small = immediate == 11 || immediate == -11;
-                assertEquals("REX for dst=" + regs[0] + ", src=" + regs[1], regs[2], enc.read1(0));
-                assertEquals(small ? 0x6B : 0x69, enc.read1(1));
-                assertEquals(regs[3], enc.read1(2));
-                assertEquals(small ? 4 : 7, enc._bits.size());
-                assertEquals(immediate, small ? (byte)enc.read1(3) : enc.read4(3));
-            }
-        }
-    }
-    @Test
-    public void testMemoryCompare64Immediate32() {
-        for (int immediate : new int[]{123456789, -123456789}) {
-            String src = "int[] !a = new int[2]; a[0] = arg; return a[arg & 1] == " + immediate + ";";
-            CodeGen code = new CodeGen(src).driver(CodeGen.Phase.Encoding, "x86_64_v2", "SystemV");
-            var cmp = code._stop.walk(n -> n instanceof CmpMemX86 ? n : null);
-            assertNotNull("Must exercise a memory comparison", cmp);
-            var enc = code._encoding;
-            int start = enc._opStart[cmp._nid];
-
-            // REX.W, 81 /7, SIB with scale 8, disp8, and a sign-extended imm32.
-            assertEquals(0x48, enc.read1(start) & 0xF8);
-            assertEquals(0x81, enc.read1(start + 1));
-            assertEquals(0x7C, enc.read1(start + 2));
-            assertEquals(0xC0, enc.read1(start + 3) & 0xC0);
-            assertEquals(8, enc.read1(start + 4));
-            assertEquals(immediate, enc.read4(start + 5));
-            assertEquals("CMP r/m64 uses four immediate bytes", 9, enc._opLen[cmp._nid]);
-
-            // SETE must immediately follow the CPU's nine-byte CMP instruction.
-            assertEquals(0x0F, enc.read1(start + 9));
-            assertEquals(0x94, enc.read1(start + 10));
-        }
-    }
-
-    /** Exercise instruction encoders with explicit registers, independent of allocator choices. */
-    private static class FixedRegisterEncoding extends Encoding {
-        private final Node _dst, _src;
-        private final short _dstReg, _srcReg;
-
-        FixedRegisterEncoding(CodeGen code, Node dst, int dstReg, Node src, int srcReg) {
-            super(code);
-            _dst = dst;
-            _src = src;
-            _dstReg = (short)dstReg;
-            _srcReg = (short)srcReg;
-        }
-
-        @Override public short reg(Node n) {
-            if (n == _dst) return _dstReg;
-            if (n == _src) return _srcReg;
-            throw new AssertionError("Unexpected register lookup");
-        }
-    }
-}