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x86_64: implement negation and @abs for f80

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Also implement live-outs since the x87 requires so much care around
liveness tracking.
This commit is contained in:
Jacob Young 2023-10-06 03:07:14 -04:00
parent 5aeb13c350
commit 20b4401cde
7 changed files with 337 additions and 221 deletions
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520
src/arch/x86_64/CodeGen.zig
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File diff suppressed because it is too large Load Diff

2
src/arch/x86_64/Encoding.zig
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@ -260,7 +260,7 @@ pub const Mnemonic = enum {
ud2,
xadd, xchg, xor,
// X87
ffree, fisttp, fld, fst, fstp,
fabs, fchs, ffree, fisttp, fld, fst, fstp,
// MMX
movd, movq,
packssdw, packsswb, packuswb,

4
src/arch/x86_64/Mir.zig
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@ -442,6 +442,10 @@ pub const Inst = struct {
/// Bitwise logical xor of packed double-precision floating-point values
xor,
/// Absolute value
abs,
/// Change sign
chs,
/// Free floating-point register
free,
/// Store integer with truncation

4
src/arch/x86_64/encodings.zig
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@ -829,6 +829,10 @@ pub const table = [_]Entry{
.{ .xor, .rm, &.{ .r64, .rm64 }, &.{ 0x33 }, 0, .long, .none },
// X87
.{ .fabs, .np, &.{}, &.{ 0xd9, 0xe1 }, 0, .none, .x87 },
.{ .fchs, .np, &.{}, &.{ 0xd9, 0xe0 }, 0, .none, .x87 },
.{ .ffree, .o, &.{ .st }, &.{ 0xdd, 0xc0 }, 0, .none, .x87 },
.{ .fisttp, .m, &.{ .m16 }, &.{ 0xdf }, 1, .none, .x87 },

6
src/register_manager.zig
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@ -91,11 +91,13 @@ pub fn RegisterManager(
return null;
}
pub fn indexOfRegIntoTracked(reg: Register) ?RegisterBitSet.ShiftInt {
pub fn indexOfRegIntoTracked(
reg: Register,
) ?std.math.IntFittingRange(0, tracked_registers.len) {
return indexOfReg(tracked_registers, reg);
}
pub fn regAtTrackedIndex(index: RegisterBitSet.ShiftInt) Register {
pub fn regAtTrackedIndex(index: std.math.IntFittingRange(0, tracked_registers.len)) Register {
return tracked_registers[index];
}

2
test/behavior/abs.zig
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@ -95,7 +95,7 @@ test "@abs floats" {
try comptime testAbsFloats(f64);
try testAbsFloats(f64);
try comptime testAbsFloats(f80);
if (builtin.zig_backend != .stage2_x86_64 and builtin.zig_backend != .stage2_wasm) try testAbsFloats(f80);
if (builtin.zig_backend != .stage2_wasm) try testAbsFloats(f80);
try comptime testAbsFloats(f128);
if (builtin.zig_backend != .stage2_wasm) try testAbsFloats(f128);
}

20
test/behavior/floatop.zig
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@ -270,7 +270,7 @@ test "@sqrt f80/f128/c_longdouble" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) return error.SkipZigTest;
if (builtin.os.tag == .freebsd) {
// TODO https://github.com/ziglang/zig/issues/10875
@ -378,7 +378,7 @@ test "@sin f80/f128/c_longdouble" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) return error.SkipZigTest;
try testSin(f80);
comptime try testSin(f80);
@ -447,7 +447,7 @@ test "@cos f80/f128/c_longdouble" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) return error.SkipZigTest;
try testCos(f80);
try comptime testCos(f80);
@ -516,7 +516,7 @@ test "@tan f80/f128/c_longdouble" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) return error.SkipZigTest;
try testTan(f80);
try comptime testTan(f80);
@ -585,7 +585,7 @@ test "@exp f80/f128/c_longdouble" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) return error.SkipZigTest;
try testExp(f80);
try comptime testExp(f80);
@ -654,7 +654,7 @@ test "@exp2 f80/f128/c_longdouble" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) return error.SkipZigTest;
try testExp2(f80);
try comptime testExp2(f80);
@ -723,7 +723,7 @@ test "@log f80/f128/c_longdouble" {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) return error.SkipZigTest;
try testLog(f80);
try comptime testLog(f80);
@ -790,7 +790,7 @@ test "@log2 f80/f128/c_longdouble" {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) return error.SkipZigTest;
try testLog2(f80);
try comptime testLog2(f80);
@ -863,7 +863,7 @@ test "@log10 f80/f128/c_longdouble" {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) return error.SkipZigTest;
try testLog10(f80);
try comptime testLog10(f80);
@ -929,7 +929,7 @@ test "@abs f80/f128/c_longdouble" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c and builtin.cpu.arch.isArmOrThumb()) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64 and builtin.target.ofmt != .elf) return error.SkipZigTest;
try testFabs(f80);
try comptime testFabs(f80);