mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-02-21 16:54:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

print_air: print Liveness info for switch_br

Browse Source
This commit is contained in:
Andrew Kelley 2022-12-02 23:46:42 -07:00
parent fdbb0fb7b9
commit 53dcf78a25
1 changed files with 25 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
src/print_air.zig
View File

@ -750,6 +750,9 @@ const Writer = struct {
fn writeSwitchBr(w: *Writer, s: anytype, inst: Air.Inst.Index) @TypeOf(s).Error!void {
const pl_op = w.air.instructions.items(.data)[inst].pl_op;
const switch_br = w.air.extraData(Air.SwitchBr, pl_op.payload);
const liveness = w.liveness.getSwitchBr(w.gpa, inst, switch_br.data.cases_len + 1) catch
@panic("out of memory");
defer w.gpa.free(liveness.deaths);
var extra_index: usize = switch_br.end;
var case_i: u32 = 0;
@ -770,6 +773,17 @@ const Writer = struct {
}
try s.writeAll("] => {\n");
w.indent += 2;
const deaths = liveness.deaths[case_i];
if (deaths.len != 0) {
try s.writeByteNTimes(' ', w.indent);
for (deaths) |operand, i| {
if (i != 0) try s.writeAll(" ");
try s.print("%{d}!", .{operand});
}
try s.writeAll("\n");
}
try w.writeBody(s, case_body);
w.indent -= 2;
try s.writeByteNTimes(' ', w.indent);
@ -780,6 +794,17 @@ const Writer = struct {
if (else_body.len != 0) {
try s.writeAll(", else => {\n");
w.indent += 2;
const deaths = liveness.deaths[liveness.deaths.len - 1];
if (deaths.len != 0) {
try s.writeByteNTimes(' ', w.indent);
for (deaths) |operand, i| {
if (i != 0) try s.writeAll(" ");
try s.print("%{d}!", .{operand});
}
try s.writeAll("\n");
}
try w.writeBody(s, else_body);
w.indent -= 2;
try s.writeByteNTimes(' ', w.indent);