compiler-rt: add __addvsi3, __subvsi3, __mulvsi3, and __subvdi3

Author: hi7

CMakeLists.txt

@@ -205,6 +205,7 @@ set(ZIG_STAGE2_SOURCES
     lib/compiler_rt/addo.zig
     lib/compiler_rt/addsf3.zig
     lib/compiler_rt/addtf3.zig
+    lib/compiler_rt/addvsi3.zig
     lib/compiler_rt/addxf3.zig
     lib/compiler_rt/arm.zig
     lib/compiler_rt/atomics.zig
@@ -323,6 +324,7 @@ set(ZIG_STAGE2_SOURCES
     lib/compiler_rt/mulo.zig
     lib/compiler_rt/mulsf3.zig
     lib/compiler_rt/multf3.zig
+    lib/compiler_rt/mulvsi3.zig
     lib/compiler_rt/mulxf3.zig
     lib/compiler_rt/negXi2.zig
     lib/compiler_rt/negdf2.zig
@@ -346,6 +348,8 @@ set(ZIG_STAGE2_SOURCES
     lib/compiler_rt/subo.zig
     lib/compiler_rt/subsf3.zig
     lib/compiler_rt/subtf3.zig
+    lib/compiler_rt/subvdi3.zig
+    lib/compiler_rt/subvsi3.zig
     lib/compiler_rt/subxf3.zig
     lib/compiler_rt/tan.zig
     lib/compiler_rt/trig.zig

lib/compiler_rt.zig

@@ -27,6 +27,11 @@ comptime {
     _ = @import("compiler_rt/absvti2.zig");
     _ = @import("compiler_rt/negv.zig");
 
+    _ = @import("compiler_rt/addvsi3.zig");
+    _ = @import("compiler_rt/subvsi3.zig");
+    _ = @import("compiler_rt/subvdi3.zig");
+    _ = @import("compiler_rt/mulvsi3.zig");
+
     _ = @import("compiler_rt/addo.zig");
     _ = @import("compiler_rt/subo.zig");
     _ = @import("compiler_rt/mulo.zig");

lib/compiler_rt/addvsi3.zig

@@ -0,0 +1,26 @@
+const addv = @import("addo.zig");
+const common = @import("./common.zig");
+const testing = @import("std").testing;
+
+pub const panic = common.panic;
+
+comptime {
+    @export(&__addvsi3, .{ .name = "__addvsi3", .linkage = common.linkage, .visibility = common.visibility });
+}
+
+pub fn __addvsi3(a: i32, b: i32) callconv(.c) i32 {
+    var overflow: c_int = 0;
+    const sum = addv.__addosi4(a, b, &overflow);
+    if (overflow != 0) @panic("compiler-rt: integer overflow");
+    return sum;
+}
+
+test "addvsi3" {
+    // const min: i32 = -2147483648
+    // const max: i32 = 2147483647
+    // TODO write panic handler for testing panics
+    // try test__addvsi3(-2147483648, -1, -1); // panic
+    // try test__addvsi3(2147483647, 1, 1);  // panic
+    try testing.expectEqual(-2147483648, __addvsi3(-2147483647, -1));
+    try testing.expectEqual(2147483647, __addvsi3(2147483646, 1));
+}

lib/compiler_rt/mulvsi3.zig

@@ -0,0 +1,26 @@
+const mulv = @import("mulo.zig");
+const common = @import("./common.zig");
+const testing = @import("std").testing;
+
+pub const panic = common.panic;
+
+comptime {
+    @export(&__mulvsi3, .{ .name = "__mulvsi3", .linkage = common.linkage, .visibility = common.visibility });
+}
+
+pub fn __mulvsi3(a: i32, b: i32) callconv(.c) i32 {
+    var overflow: c_int = 0;
+    const sum = mulv.__mulosi4(a, b, &overflow);
+    if (overflow != 0) @panic("compiler-rt: integer overflow");
+    return sum;
+}
+
+test "mulvsi3" {
+    // min i32 = -2147483648
+    // max i32 = 2147483647
+    // TODO write panic handler for testing panics
+    // try test__mulvsi3(-2147483648, -1, -1); // panic
+    // try test__mulvsi3(2147483647, 1, 1);  // panic
+    try testing.expectEqual(-2147483648, __mulvsi3(-1073741824, 2));
+    try testing.expectEqual(2147483646, __mulvsi3(1073741823, 2)); // one too less for corner case 2147483647
+}

lib/compiler_rt/subvdi3.zig

@@ -0,0 +1,26 @@
+const subv = @import("subo.zig");
+const common = @import("./common.zig");
+const testing = @import("std").testing;
+
+pub const panic = common.panic;
+
+comptime {
+    @export(&__subvdi3, .{ .name = "__subvdi3", .linkage = common.linkage, .visibility = common.visibility });
+}
+
+pub fn __subvdi3(a: i64, b: i64) callconv(.c) i64 {
+    var overflow: c_int = 0;
+    const sum = subv.__subodi4(a, b, &overflow);
+    if (overflow != 0) @panic("compiler-rt: integer overflow");
+    return sum;
+}
+
+test "subvdi3" {
+    // min i64 = -9223372036854775808
+    // max i64 = 9223372036854775807
+    // TODO write panic handler for testing panics
+    // try test__subvdi3(-9223372036854775808, -1, -1); // panic
+    // try test__addvdi3(9223372036854775807, 1, 1);  // panic
+    try testing.expectEqual(-9223372036854775808, __subvdi3(-9223372036854775807, 1));
+    try testing.expectEqual(9223372036854775807, __subvdi3(9223372036854775806, -1));
+}

lib/compiler_rt/subvsi3.zig

@@ -0,0 +1,26 @@
+const subv = @import("subo.zig");
+const common = @import("./common.zig");
+const testing = @import("std").testing;
+
+pub const panic = common.panic;
+
+comptime {
+    @export(&__subvsi3, .{ .name = "__subvsi3", .linkage = common.linkage, .visibility = common.visibility });
+}
+
+pub fn __subvsi3(a: i32, b: i32) callconv(.c) i32 {
+    var overflow: c_int = 0;
+    const sum = subv.__subosi4(a, b, &overflow);
+    if (overflow != 0) @panic("compiler-rt: integer overflow");
+    return sum;
+}
+
+test "subvsi3" {
+    // min i32 = -2147483648
+    // max i32 = 2147483647
+    // TODO write panic handler for testing panics
+    // try test__subvsi3(-2147483648, -1, -1); // panic
+    // try test__subvsi3(2147483647, 1, 1);  // panic
+    try testing.expectEqual(-2147483648, __subvsi3(-2147483647, 1));
+    try testing.expectEqual(2147483647, __subvsi3(2147483646, -1));
+}