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| author | Jacob Young <jacobly0@users.noreply.github.com> | 2023-03-14 23:49:24 -0400 |
|---|---|---|
| committer | Jacob Young <jacobly0@users.noreply.github.com> | 2023-03-15 01:04:21 -0400 |
| commit | ba9d93dc9fd341f4dc08082f894fcbc1060cdcad (patch) | |
| tree | 75e0b02f1179e3e13d89e740835787c398a9ed1f /src/arch/x86_64/CodeGen.zig | |
| parent | 05b12e677939effa9da147008071908a2a93fe35 (diff) | |
| download | zig-ba9d93dc9fd341f4dc08082f894fcbc1060cdcad.tar.gz zig-ba9d93dc9fd341f4dc08082f894fcbc1060cdcad.zip | |
x86_64: implement more binary immediate combinations
Diffstat (limited to 'src/arch/x86_64/CodeGen.zig')
| -rw-r--r-- | src/arch/x86_64/CodeGen.zig | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/src/arch/x86_64/CodeGen.zig b/src/arch/x86_64/CodeGen.zig index bf1d9f0eb0..3e89779ca7 100644 --- a/src/arch/x86_64/CodeGen.zig +++ b/src/arch/x86_64/CodeGen.zig @@ -3637,12 +3637,35 @@ fn genBinOpMir(self: *Self, mir_tag: Mir.Inst.Tag, dst_ty: Type, dst_mcv: MCValu ), }, .immediate => |imm| { - // TODO - try self.asmRegisterImmediate( - mir_tag, - registerAlias(dst_reg, abi_size), - Immediate.u(@intCast(u32, imm)), - ); + switch (abi_size) { + 0 => unreachable, + 1...4 => { + try self.asmRegisterImmediate( + mir_tag, + registerAlias(dst_reg, abi_size), + Immediate.u(@intCast(u32, imm)), + ); + }, + 5...8 => { + if (math.cast(i32, @bitCast(i64, imm))) |small| { + try self.asmRegisterImmediate( + mir_tag, + registerAlias(dst_reg, abi_size), + Immediate.s(small), + ); + } else { + const tmp_reg = try self.register_manager.allocReg(null, gp); + const tmp_alias = registerAlias(tmp_reg, abi_size); + try self.asmRegisterImmediate(.mov, tmp_alias, Immediate.u(imm)); + try self.asmRegisterRegister( + mir_tag, + registerAlias(dst_reg, abi_size), + tmp_alias, + ); + } + }, + else => return self.fail("TODO getBinOpMir implement large immediate ABI", .{}), + } }, .memory, .linker_load, |