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LLVM Builder: Emit binary op optional flags for exact and no wrap

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antlilja 2024-04-05 13:20:14 +02:00 committed by Jacob Young
parent 3942083806
commit 637b1d606d
2 changed files with 86 additions and 16 deletions
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66
src/codegen/llvm/Builder.zig
View File

@ -14734,39 +14734,23 @@ pub fn toBitcode(self: *Builder, allocator: Allocator) bitcode_writer.Error![]co
}, adapter);
},
.add,
.@"add nsw",
.@"add nuw",
.@"add nuw nsw",
.@"and",
.fadd,
.fdiv,
.fmul,
.mul,
.@"mul nsw",
.@"mul nuw",
.@"mul nuw nsw",
.frem,
.fsub,
.sdiv,
.@"sdiv exact",
.sub,
.@"sub nsw",
.@"sub nuw",
.@"sub nuw nsw",
.udiv,
.@"udiv exact",
.xor,
.shl,
.@"shl nsw",
.@"shl nuw",
.@"shl nuw nsw",
.lshr,
.@"lshr exact",
.@"or",
.urem,
.srem,
.ashr,
.@"ashr exact",
=> |kind| {
const extra = func.extraData(Function.Instruction.Binary, datas[instr_index]);
try function_block.writeAbbrev(FunctionBlock.Binary{
@ -14775,6 +14759,56 @@ pub fn toBitcode(self: *Builder, allocator: Allocator) bitcode_writer.Error![]co
.rhs = adapter.getOffsetValueIndex(extra.rhs),
});
},
.@"sdiv exact",
.@"udiv exact",
.@"lshr exact",
.@"ashr exact",
=> |kind| {
const extra = func.extraData(Function.Instruction.Binary, datas[instr_index]);
try function_block.writeAbbrev(FunctionBlock.BinaryExact{
.opcode = kind.toBinaryOpcode(),
.lhs = adapter.getOffsetValueIndex(extra.lhs),
.rhs = adapter.getOffsetValueIndex(extra.rhs),
});
},
.@"add nsw",
.@"add nuw",
.@"add nuw nsw",
.@"mul nsw",
.@"mul nuw",
.@"mul nuw nsw",
.@"sub nsw",
.@"sub nuw",
.@"sub nuw nsw",
.@"shl nsw",
.@"shl nuw",
.@"shl nuw nsw",
=> |kind| {
const extra = func.extraData(Function.Instruction.Binary, datas[instr_index]);
try function_block.writeAbbrev(FunctionBlock.BinaryNoWrap{
.opcode = kind.toBinaryOpcode(),
.lhs = adapter.getOffsetValueIndex(extra.lhs),
.rhs = adapter.getOffsetValueIndex(extra.rhs),
.flags = switch (kind) {
.@"add nsw",
.@"mul nsw",
.@"sub nsw",
.@"shl nsw",
=> .{ .no_unsigned_wrap = false, .no_signed_wrap = true },
.@"add nuw",
.@"mul nuw",
.@"sub nuw",
.@"shl nuw",
=> .{ .no_unsigned_wrap = true, .no_signed_wrap = false },
.@"add nuw nsw",
.@"mul nuw nsw",
.@"sub nuw nsw",
.@"shl nuw nsw",
=> .{ .no_unsigned_wrap = true, .no_signed_wrap = true },
else => unreachable,
},
});
},
.@"fadd fast",
.@"fdiv fast",
.@"fmul fast",

36
src/codegen/llvm/ir.zig
View File

@ -1102,6 +1102,8 @@ pub const FunctionBlock = struct {
FNeg,
FNegFast,
Binary,
BinaryNoWrap,
BinaryExact,
BinaryFast,
Cmp,
CmpFast,
@ -1232,6 +1234,40 @@ pub const FunctionBlock = struct {
opcode: BinaryOpcode,
};
pub const BinaryNoWrap = struct {
const BinaryOpcode = Builder.BinaryOpcode;
pub const ops = [_]AbbrevOp{
.{ .literal = 2 },
ValueAbbrev,
ValueAbbrev,
.{ .fixed = @bitSizeOf(BinaryOpcode) },
.{ .fixed = 2 },
};
lhs: u32,
rhs: u32,
opcode: BinaryOpcode,
flags: packed struct(u2) {
no_unsigned_wrap: bool,
no_signed_wrap: bool,
},
};
pub const BinaryExact = struct {
const BinaryOpcode = Builder.BinaryOpcode;
pub const ops = [_]AbbrevOp{
.{ .literal = 2 },
ValueAbbrev,
ValueAbbrev,
.{ .fixed = @bitSizeOf(BinaryOpcode) },
.{ .literal = 1 },
};
lhs: u32,
rhs: u32,
opcode: BinaryOpcode,
};
pub const BinaryFast = struct {
const BinaryOpcode = Builder.BinaryOpcode;
pub const ops = [_]AbbrevOp{