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Merge pull request #11628 from ziglang/x64-shifts

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Jakub Konka 2022-05-11 08:24:03 +02:00 committed by GitHub
commit 6608fa1353
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2 changed files with 666 additions and 702 deletions
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1307
src/arch/x86_64/CodeGen.zig
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61
test/behavior/math.zig
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@ -9,7 +9,6 @@ const mem = std.mem;
const math = std.math;
test "assignment operators" {
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
@ -363,7 +362,6 @@ fn comptimeAdd(comptime a: comptime_int, comptime b: comptime_int) comptime_int
test "binary not" {
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
try expect(comptime x: {
break :x ~@as(u16, 0b1010101010101010) == 0b0101010101010101;
@ -570,8 +568,6 @@ test "bit shift a u1" {
}
test "truncating shift right" {
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
try testShrTrunc(maxInt(u16));
comptime try testShrTrunc(maxInt(u16));
}
@ -642,7 +638,6 @@ test "@addWithOverflow" {
test "small int addition" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
@ -908,21 +903,47 @@ test "@subWithOverflow" {
test "@shlWithOverflow" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
var result: u16 = undefined;
try expect(@shlWithOverflow(u16, 0b0010111111111111, 3, &result));
try expect(result == 0b0111111111111000);
try expect(!@shlWithOverflow(u16, 0b0010111111111111, 2, &result));
try expect(result == 0b1011111111111100);
{
var result: u4 = undefined;
var a: u4 = 2;
var b: u2 = 1;
try expect(!@shlWithOverflow(u4, a, b, &result));
try expect(result == 4);
var a: u16 = 0b0000_0000_0000_0011;
var b: u4 = 15;
try expect(@shlWithOverflow(u16, a, b, &result));
try expect(result == 0b1000_0000_0000_0000);
b = 14;
try expect(!@shlWithOverflow(u16, a, b, &result));
try expect(result == 0b1100_0000_0000_0000);
b = 3;
try expect(@shlWithOverflow(u4, a, b, &result));
try expect(result == 0);
}
{
var result: i9 = undefined;
var a: i9 = 127;
var b: u4 = 1;
try expect(!@shlWithOverflow(i9, a, b, &result));
try expect(result == 254);
b = 2;
try expect(@shlWithOverflow(i9, a, b, &result));
try expect(result == -4);
}
{
var result: u16 = undefined;
try expect(@shlWithOverflow(u16, 0b0010111111111111, 3, &result));
try expect(result == 0b0111111111111000);
try expect(!@shlWithOverflow(u16, 0b0010111111111111, 2, &result));
try expect(result == 0b1011111111111100);
var a: u16 = 0b0000_0000_0000_0011;
var b: u4 = 15;
try expect(@shlWithOverflow(u16, a, b, &result));
try expect(result == 0b1000_0000_0000_0000);
b = 14;
try expect(!@shlWithOverflow(u16, a, b, &result));
try expect(result == 0b1100_0000_0000_0000);
}
}
test "overflow arithmetic with u0 values" {
@ -1067,8 +1088,6 @@ fn testShlTrunc(x: u16) !void {
}
test "exact shift left" {
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
try testShlExact(0b00110101);
comptime try testShlExact(0b00110101);
}
@ -1078,8 +1097,6 @@ fn testShlExact(x: u8) !void {
}
test "exact shift right" {
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
try testShrExact(0b10110100);
comptime try testShrExact(0b10110100);
}