removing needless copies to zero register for unused values

This commit is contained in:
Jakub Doka 2024-11-16 13:42:17 +01:00
parent e6df9b6b01
commit e5d6b35f66
No known key found for this signature in database
GPG key ID: C6E9A89936B8C143
18 changed files with 138 additions and 118 deletions

View file

@ -2066,6 +2066,11 @@ impl Node {
fn is_data_phi(&self) -> bool { fn is_data_phi(&self) -> bool {
self.kind == Kind::Phi && self.ty != ty::Id::VOID self.kind == Kind::Phi && self.ty != ty::Id::VOID
} }
fn has_no_value(&self) -> bool {
(self.kind.is_cfg() && (!self.kind.is_call() || self.ty == ty::Id::VOID))
|| matches!(self.kind, Kind::Stre)
}
} }
type LoopDepth = u16; type LoopDepth = u16;

View file

@ -75,7 +75,7 @@ impl HbvmBackend {
PLoc::WideReg(rg, size) => (rg, size), PLoc::WideReg(rg, size) => (rg, size),
PLoc::Reg(rg, size) if ty.loc(tys) == Loc::Stack => (rg, size), PLoc::Reg(rg, size) if ty.loc(tys) == Loc::Stack => (rg, size),
PLoc::Reg(r, ..) | PLoc::Ref(r, ..) => { PLoc::Reg(r, ..) | PLoc::Ref(r, ..) => {
self.emit(instrs::cp(atr(arg), r)); self.emit_cp(atr(arg), r);
continue; continue;
} }
}; };
@ -83,13 +83,13 @@ impl HbvmBackend {
if nodes.is_unlocked(arg) { if nodes.is_unlocked(arg) {
self.emit(instrs::addi64(rg, reg::STACK_PTR, self.offsets[arg as usize] as _)); self.emit(instrs::addi64(rg, reg::STACK_PTR, self.offsets[arg as usize] as _));
} }
self.emit(instrs::cp(atr(arg), rg)); self.emit_cp(atr(arg), rg);
} }
let mut alloc_buf = vec![]; let mut alloc_buf = vec![];
for (i, block) in res.blocks.iter().enumerate() { for (i, block) in res.blocks.iter().enumerate() {
self.offsets[block.entry as usize] = self.code.len() as _; self.offsets[block.entry as usize] = self.code.len() as _;
for &nid in &res.instrs[block.range.clone()] { for &nid in &res.instrs[block.range()] {
if nid == VOID { if nid == VOID {
continue; continue;
} }
@ -289,7 +289,7 @@ impl HbvmBackend {
match ret { match ret {
Some(PLoc::WideReg(..)) => {} Some(PLoc::WideReg(..)) => {}
Some(PLoc::Reg(..)) if node.ty.loc(tys) == Loc::Stack => {} Some(PLoc::Reg(..)) if node.ty.loc(tys) == Loc::Stack => {}
Some(PLoc::Reg(r, ..)) => self.emit(instrs::cp(atr(nid), r)), Some(PLoc::Reg(r, ..)) => self.emit_cp(atr(nid), r),
None | Some(PLoc::Ref(..)) => {} None | Some(PLoc::Ref(..)) => {}
} }
} }
@ -309,6 +309,12 @@ impl HbvmBackend {
tail, tail,
) )
} }
fn emit_cp(&mut self, dst: Reg, src: Reg) {
if dst != 0 {
self.emit(instrs::cp(dst, src));
}
}
} }
struct Function<'a> { struct Function<'a> {
@ -323,7 +329,7 @@ impl core::fmt::Debug for Function<'_> {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result { fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
for block in &self.func.blocks { for block in &self.func.blocks {
writeln!(f, "{:?}", self.nodes[block.entry].kind)?; writeln!(f, "{:?}", self.nodes[block.entry].kind)?;
for &instr in &self.func.instrs[block.range.clone()] { for &instr in &self.func.instrs[block.range()] {
writeln!(f, "{:?}", self.nodes[instr].kind)?; writeln!(f, "{:?}", self.nodes[instr].kind)?;
} }
} }
@ -344,9 +350,11 @@ impl<'a> Function<'a> {
} }
fn add_block(&mut self, entry: Nid) { fn add_block(&mut self, entry: Nid) {
self.func self.func.blocks.push(Block {
.blocks start: self.func.instrs.len() as _,
.push(Block { range: self.func.instrs.len()..self.func.instrs.len(), entry }); end: self.func.instrs.len() as _,
entry,
});
self.func.backrefs[entry as usize] = self.func.blocks.len() as u16 - 1; self.func.backrefs[entry as usize] = self.func.blocks.len() as u16 - 1;
} }
@ -357,7 +365,7 @@ impl<'a> Function<'a> {
self.func.instrs.push(exit); self.func.instrs.push(exit);
} }
let prev = self.func.blocks.last_mut().unwrap(); let prev = self.func.blocks.last_mut().unwrap();
prev.range.end = self.func.instrs.len(); prev.end = self.func.instrs.len() as _;
} }
fn add_instr(&mut self, nid: Nid) { fn add_instr(&mut self, nid: Nid) {
@ -562,6 +570,8 @@ impl<'a> Regalloc<'a> {
fn run_low(&mut self) { fn run_low(&mut self) {
self.res.bundles.clear(); self.res.bundles.clear();
self.res.node_to_reg.clear(); self.res.node_to_reg.clear();
#[cfg(debug_assertions)]
self.res.marked.clear();
self.res.node_to_reg.resize(self.nodes.vreg_count(), 0); self.res.node_to_reg.resize(self.nodes.vreg_count(), 0);
debug_assert!(self.res.dfs_buf.is_empty()); debug_assert!(self.res.dfs_buf.is_empty());
@ -591,7 +601,7 @@ impl<'a> Regalloc<'a> {
let instrs = mem::take(&mut self.res.instrs); let instrs = mem::take(&mut self.res.instrs);
for &inst in &instrs { for &inst in &instrs {
if self.res.visited.get(inst) || inst == 0 { if self.nodes[inst].has_no_value() || self.res.visited.get(inst) || inst == 0 {
continue; continue;
} }
self.append_bundle(inst, &mut bundle, None); self.append_bundle(inst, &mut bundle, None);
@ -599,13 +609,18 @@ impl<'a> Regalloc<'a> {
self.res.instrs = instrs; self.res.instrs = instrs;
} }
fn append_bundle(&mut self, inst: Nid, bundle: &mut Bundle, prefered: Option<usize>) { fn collect_bundle(&mut self, inst: Nid, into: &mut Bundle) {
let dom = self.nodes.idom_of(inst); let dom = self.nodes.idom_of(inst);
self.res.dfs_seem.clear(self.nodes.values.len());
for (cursor, uinst) in self.nodes.uses_of(inst) { for (cursor, uinst) in self.nodes.uses_of(inst) {
if !self.res.dfs_seem.set(uinst) {
continue;
}
#[cfg(debug_assertions)] #[cfg(debug_assertions)]
self.res.marked.insert((inst, uinst)); debug_assert!(self.res.marked.insert((inst, uinst)));
self.reverse_cfg_dfs(cursor, dom, |s, n, b| { self.reverse_cfg_dfs(cursor, dom, |s, n, b| {
let mut range = b.range.clone(); let mut range = b.range();
debug_assert!(range.start < range.end); debug_assert!(range.start < range.end);
range.start = range.start.max(s.instr_of(inst).map_or(0, |n| n + 1) as usize); range.start = range.start.max(s.instr_of(inst).map_or(0, |n| n + 1) as usize);
debug_assert!(range.start < range.end, "{:?}", range); debug_assert!(range.start < range.end, "{:?}", range);
@ -621,32 +636,37 @@ impl<'a> Regalloc<'a> {
range.end = new; range.end = new;
debug_assert!(range.start < range.end, "{:?} {inst} {uinst}", range); debug_assert!(range.start < range.end, "{:?} {inst} {uinst}", range);
bundle.add(range); into.add(range);
}); });
} }
}
if !bundle.taken.contains(&true) { fn append_bundle(&mut self, inst: Nid, tmp: &mut Bundle, prefered: Option<usize>) {
self.collect_bundle(inst, tmp);
if tmp.is_empty() {
self.res.node_to_reg[inst as usize] = u8::MAX; self.res.node_to_reg[inst as usize] = u8::MAX;
return; return;
} }
if let Some(prefered) = prefered if let Some(prefered) = prefered
&& !self.res.bundles[prefered].overlaps(bundle) && !self.res.bundles[prefered].overlaps(tmp)
{ {
self.res.bundles[prefered].merge(bundle); self.res.bundles[prefered].merge(tmp);
bundle.clear(); tmp.clear();
self.res.node_to_reg[inst as usize] = prefered as Reg + 1; self.res.node_to_reg[inst as usize] = prefered as Reg + 1;
} else { return;
match self.res.bundles.iter_mut().enumerate().find(|(_, b)| !b.overlaps(bundle)) { }
Some((i, other)) => {
other.merge(bundle); match self.res.bundles.iter_mut().enumerate().find(|(_, b)| !b.overlaps(tmp)) {
bundle.clear(); Some((i, other)) => {
self.res.node_to_reg[inst as usize] = i as Reg + 1; other.merge(tmp);
} tmp.clear();
None => { self.res.node_to_reg[inst as usize] = i as Reg + 1;
self.res.bundles.push(mem::replace(bundle, Bundle::new(bundle.taken.len()))); }
self.res.node_to_reg[inst as usize] = self.res.bundles.len() as Reg; None => {
} self.res.bundles.push(tmp.take());
self.res.node_to_reg[inst as usize] = self.res.bundles.len() as Reg;
} }
} }
} }
@ -659,13 +679,12 @@ impl<'a> Regalloc<'a> {
) { ) {
debug_assert!(self.res.dfs_buf.is_empty()); debug_assert!(self.res.dfs_buf.is_empty());
self.res.dfs_buf.push(from); self.res.dfs_buf.push(from);
self.res.dfs_seem.clear(self.nodes.values.len());
debug_assert!(self.nodes.dominates(until, from)); debug_assert!(self.nodes.dominates(until, from));
while let Some(nid) = self.res.dfs_buf.pop() { while let Some(nid) = self.res.dfs_buf.pop() {
debug_assert!(self.nodes.dominates(until, nid), "{until} {:?}", self.nodes[until]); debug_assert!(self.nodes.dominates(until, nid), "{until} {:?}", self.nodes[until]);
each(self, nid, self.res.blocks[self.block_of(nid) as usize].clone()); each(self, nid, self.res.blocks[self.block_of(nid) as usize]);
if nid == until { if nid == until {
continue; continue;
} }
@ -729,10 +748,25 @@ impl Bundle {
fn clear(&mut self) { fn clear(&mut self) {
self.taken.fill(false); self.taken.fill(false);
} }
fn is_empty(&self) -> bool {
!self.taken.contains(&true)
}
fn take(&mut self) -> Self {
mem::replace(self, Self::new(self.taken.len()))
}
} }
#[derive(Clone)] #[derive(Clone, Copy)]
struct Block { struct Block {
range: Range<usize>, start: u16,
end: u16,
entry: Nid, entry: Nid,
} }
impl Block {
pub fn range(&self) -> Range<usize> {
self.start as usize..self.end as usize
}
}

View file

@ -1,7 +1,6 @@
main: main:
CP r0, r2
CP r1, r0 CP r1, r0
JALA r0, r31, 0a JALA r0, r31, 0a
code size: 25 code size: 22
ret: 0 ret: 0
status: Ok(()) status: Ok(())

View file

@ -1,6 +1,6 @@
main: main:
ADDI64 r254, r254, -160d ADDI64 r254, r254, -152d
ST r31, r254, 80a, 80h ST r31, r254, 80a, 72h
LRA r32, r0, :glob_stru LRA r32, r0, :glob_stru
JAL r31, r0, :new_stru JAL r31, r0, :new_stru
ST r1, r32, 0a, 16h ST r1, r32, 0a, 16h
@ -62,14 +62,14 @@ main:
ST r33, r32, 8a, 8h ST r33, r32, 8a, 8h
CP r32, r34 CP r32, r34
JMP :7 JMP :7
3: MULI64 r39, r32, 16d 3: MULI64 r34, r32, 16d
ADD64 r39, r37, r39 ADD64 r34, r37, r34
JAL r31, r0, :new_stru JAL r31, r0, :new_stru
ST r1, r39, 0a, 16h ST r1, r34, 0a, 16h
ADD64 r32, r32, r35 ADD64 r32, r32, r35
JMP :8 JMP :8
1: LD r31, r254, 80a, 80h 1: LD r31, r254, 80a, 72h
ADDI64 r254, r254, 160d ADDI64 r254, r254, 152d
JALA r0, r31, 0a JALA r0, r31, 0a
new_stru: new_stru:
ADDI64 r254, r254, -24d ADDI64 r254, r254, -24d

View file

@ -14,12 +14,11 @@ main:
CP r6, r13 CP r6, r13
LD r3, r14, 0a, 16h LD r3, r14, 0a, 16h
ECA ECA
CP r0, r1
CP r1, r0 CP r1, r0
LD r32, r254, 16a, 32h LD r32, r254, 16a, 32h
ADDI64 r254, r254, 48d ADDI64 r254, r254, 48d
JALA r0, r31, 0a JALA r0, r31, 0a
ev: Ecall ev: Ecall
code size: 183 code size: 180
ret: 0 ret: 0
status: Ok(()) status: Ok(())

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@ -11,7 +11,6 @@ main:
ADDI64 r254, r254, -64d ADDI64 r254, r254, -64d
ST r31, r254, 0a, 64h ST r31, r254, 0a, 64h
JAL r31, r0, :check_platform JAL r31, r0, :check_platform
CP r0, r1
CP r33, r0 CP r33, r0
LI64 r36, 30d LI64 r36, 30d
LI64 r37, 100d LI64 r37, 100d
@ -59,6 +58,6 @@ x86_fb_ptr:
LD r32, r254, 0a, 8h LD r32, r254, 0a, 8h
ADDI64 r254, r254, 8d ADDI64 r254, r254, 8d
JALA r0, r31, 0a JALA r0, r31, 0a
code size: 428 code size: 425
ret: 3000 ret: 3000
status: Ok(()) status: Ok(())

View file

@ -6,11 +6,10 @@ main:
ADDI64 r254, r254, 16d ADDI64 r254, r254, 16d
JALA r0, r31, 0a JALA r0, r31, 0a
opaque: opaque:
CP r0, r2
JALA r0, r31, 0a JALA r0, r31, 0a
process: process:
ADDI64 r254, r254, -64d ADDI64 r254, r254, -56d
ST r31, r254, 16a, 48h ST r31, r254, 16a, 40h
LI64 r32, 1000d LI64 r32, 1000d
ADDI64 r33, r254, 0d ADDI64 r33, r254, 0d
ST r0, r254, 0a, 1h ST r0, r254, 0a, 1h
@ -18,16 +17,16 @@ process:
JMP :1 JMP :1
0: CP r2, r33 0: CP r2, r33
JAL r31, r0, :opaque JAL r31, r0, :opaque
LD r35, r254, 0a, 1h LD r34, r254, 0a, 1h
ANDI r35, r35, 255d ANDI r34, r34, 255d
JEQ r35, r0, :2 JEQ r34, r0, :2
JMP :3 JMP :3
2: ADDI64 r32, r32, -1d 2: ADDI64 r32, r32, -1d
1: JMP :4 1: JMP :4
3: LD r31, r254, 16a, 48h 3: LD r31, r254, 16a, 40h
ADDI64 r254, r254, 64d ADDI64 r254, r254, 56d
JALA r0, r31, 0a JALA r0, r31, 0a
timed out timed out
code size: 251 code size: 248
ret: 0 ret: 0
status: Ok(()) status: Ok(())

View file

@ -1,12 +1,12 @@
main: main:
ADDI64 r254, r254, -24d ADDI64 r254, r254, -16d
ST r32, r254, 0a, 24h ST r32, r254, 0a, 16h
LI64 r13, 8d LI64 r13, 8d
CP r2, r13 CP r2, r13
ECA ECA
LI64 r14, 6d LI64 r14, 6d
LRA r15, r0, :gb LRA r13, r0, :gb
LD r13, r15, 0a, 8h LD r13, r13, 0a, 8h
CMPU r13, r13, r0 CMPU r13, r13, r0
CMPUI r13, r13, 0d CMPUI r13, r13, 0d
OR r13, r13, r0 OR r13, r13, r0
@ -17,8 +17,8 @@ main:
0: LI64 r13, 1d 0: LI64 r13, 1d
1: SUB64 r13, r13, r14 1: SUB64 r13, r13, r14
CP r1, r13 CP r1, r13
LD r32, r254, 0a, 24h LD r32, r254, 0a, 16h
ADDI64 r254, r254, 24d ADDI64 r254, r254, 16d
JALA r0, r31, 0a JALA r0, r31, 0a
code size: 179 code size: 179
ret: 0 ret: 0

View file

@ -1,31 +1,29 @@
main: main:
ADDI64 r254, r254, -72d ADDI64 r254, r254, -56d
ST r31, r254, 16a, 56h ST r31, r254, 16a, 40h
ADDI64 r32, r254, 0d ADDI64 r32, r254, 0d
ADDI64 r33, r254, 8d ADDI64 r33, r254, 8d
ST r0, r254, 0a, 8h ST r0, r254, 0a, 8h
ST r0, r254, 8a, 8h ST r0, r254, 8a, 8h
LI64 r36, 1024d LI64 r34, 1024d
CP r2, r33 CP r2, r33
CP r3, r32 CP r3, r32
CP r4, r36 CP r4, r34
JAL r31, r0, :set JAL r31, r0, :set
CP r32, r1 CP r32, r1
ANDI r32, r32, 4294967295d ANDI r32, r32, 4294967295d
CP r1, r32 CP r1, r32
LD r31, r254, 16a, 56h LD r31, r254, 16a, 40h
ADDI64 r254, r254, 72d ADDI64 r254, r254, 56d
JALA r0, r31, 0a JALA r0, r31, 0a
set: set:
ADDI64 r254, r254, -8d ADDI64 r254, r254, -8d
ST r32, r254, 0a, 8h ST r32, r254, 0a, 8h
CP r0, r2
CP r0, r3
CP r13, r4 CP r13, r4
CP r1, r13 CP r1, r13
LD r32, r254, 0a, 8h LD r32, r254, 0a, 8h
ADDI64 r254, r254, 8d ADDI64 r254, r254, 8d
JALA r0, r31, 0a JALA r0, r31, 0a
code size: 229 code size: 223
ret: 1024 ret: 1024
status: Ok(()) status: Ok(())

View file

@ -24,10 +24,9 @@ main:
CP r2, r0 CP r2, r0
CP r3, r32 CP r3, r32
JAL r31, r0, :integer_range JAL r31, r0, :integer_range
CP r0, r1
LD r31, r254, 0a, 24h LD r31, r254, 0a, 24h
ADDI64 r254, r254, 24d ADDI64 r254, r254, 24d
JALA r0, r31, 0a JALA r0, r31, 0a
code size: 215 code size: 212
ret: 42 ret: 42
status: Ok(()) status: Ok(())

View file

@ -20,8 +20,8 @@ main:
JAL r31, r0, :decide JAL r31, r0, :decide
ADDI64 r34, r254, 24d ADDI64 r34, r254, 24d
BMC r32, r34, 24h BMC r32, r34, 24h
LI64 r36, 1d LI64 r35, 1d
CP r2, r36 CP r2, r35
CP r1, r34 CP r1, r34
JAL r31, r0, :decide JAL r31, r0, :decide
ADDI64 r36, r254, 0d ADDI64 r36, r254, 0d

View file

@ -4,7 +4,6 @@ main:
JAL r31, r0, :opaque JAL r31, r0, :opaque
CP r33, r1 CP r33, r1
JAL r31, r0, :opaque JAL r31, r0, :opaque
CP r0, r1
JNE r33, r0, :0 JNE r33, r0, :0
CP r32, r0 CP r32, r0
JMP :1 JMP :1
@ -19,6 +18,6 @@ main:
opaque: opaque:
CP r1, r0 CP r1, r0
JALA r0, r31, 0a JALA r0, r31, 0a
code size: 153 code size: 150
ret: 0 ret: 0
status: Ok(()) status: Ok(())

View file

@ -7,8 +7,8 @@ decide:
ADDI64 r254, r254, 8d ADDI64 r254, r254, 8d
JALA r0, r31, 0a JALA r0, r31, 0a
main: main:
ADDI64 r254, r254, -144d ADDI64 r254, r254, -136d
ST r31, r254, 80a, 64h ST r31, r254, 80a, 56h
JAL r31, r0, :decide JAL r31, r0, :decide
CP r32, r1 CP r32, r1
CP r33, r0 CP r33, r0
@ -57,22 +57,22 @@ main:
9: ADDI64 r33, r254, 40d 9: ADDI64 r33, r254, 40d
JAL r31, r0, :new_foo JAL r31, r0, :new_foo
ST r1, r33, 0a, 16h ST r1, r33, 0a, 16h
LD r37, r254, 40a, 8h LD r36, r254, 40a, 8h
JNE r37, r0, :10 JNE r36, r0, :10
LI64 r32, 999d LI64 r32, 999d
CP r1, r32 CP r1, r32
JMP :3 JMP :3
10: LRA r37, r0, :"foo\0" 10: LRA r36, r0, :"foo\0"
CP r4, r37 CP r4, r36
LD r2, r33, 0a, 16h LD r2, r33, 0a, 16h
JAL r31, r0, :use_foo JAL r31, r0, :use_foo
ADDI64 r33, r254, 0d ADDI64 r33, r254, 0d
JAL r31, r0, :no_foo JAL r31, r0, :no_foo
ST r1, r33, 0a, 16h ST r1, r33, 0a, 16h
JAL r31, r0, :decide JAL r31, r0, :decide
CP r37, r1 CP r36, r1
ANDI r37, r37, 255d ANDI r36, r36, 255d
JNE r37, r0, :11 JNE r36, r0, :11
JMP :12 JMP :12
11: ST r34, r254, 0a, 8h 11: ST r34, r254, 0a, 8h
ST r35, r254, 8a, 8h ST r35, r254, 8a, 8h
@ -102,8 +102,8 @@ main:
ANDI r32, r32, 65535d ANDI r32, r32, 65535d
SUB64 r32, r32, r33 SUB64 r32, r32, r33
CP r1, r32 CP r1, r32
3: LD r31, r254, 80a, 64h 3: LD r31, r254, 80a, 56h
ADDI64 r254, r254, 144d ADDI64 r254, r254, 136d
JALA r0, r31, 0a JALA r0, r31, 0a
new_bar: new_bar:
ADDI64 r254, r254, -48d ADDI64 r254, r254, -48d
@ -144,10 +144,8 @@ use_foo:
ADDI64 r254, r254, -16d ADDI64 r254, r254, -16d
ST r2, r254, 0a, 16h ST r2, r254, 0a, 16h
ADDI64 r2, r254, 0d ADDI64 r2, r254, 0d
CP r0, r2
CP r0, r4
ADDI64 r254, r254, 16d ADDI64 r254, r254, 16d
JALA r0, r31, 0a JALA r0, r31, 0a
code size: 1246 code size: 1240
ret: 0 ret: 0
status: Ok(()) status: Ok(())

View file

@ -32,9 +32,7 @@ main:
ADDI64 r254, r254, 32d ADDI64 r254, r254, 32d
JALA r0, r31, 0a JALA r0, r31, 0a
outb: outb:
CP r0, r2
CP r0, r3
JALA r0, r31, 0a JALA r0, r31, 0a
code size: 257 code size: 251
ret: 1 ret: 1
status: Ok(()) status: Ok(())

View file

@ -1,9 +1,8 @@
drop: drop:
CP r0, r2
JALA r0, r31, 0a JALA r0, r31, 0a
main: main:
ADDI64 r254, r254, -48d ADDI64 r254, r254, -40d
ST r31, r254, 8a, 40h ST r31, r254, 8a, 32h
ADDI64 r32, r254, 0d ADDI64 r32, r254, 0d
LI64 r33, 1d LI64 r33, 1d
ST r33, r254, 0a, 8h ST r33, r254, 0a, 8h
@ -14,8 +13,8 @@ main:
LD r32, r254, 0a, 8h LD r32, r254, 0a, 8h
ADDI64 r32, r32, -2d ADDI64 r32, r32, -2d
CP r1, r32 CP r1, r32
LD r31, r254, 8a, 40h LD r31, r254, 8a, 32h
ADDI64 r254, r254, 48d ADDI64 r254, r254, 40d
JALA r0, r31, 0a JALA r0, r31, 0a
modify: modify:
ADDI64 r254, r254, -16d ADDI64 r254, r254, -16d
@ -26,6 +25,6 @@ modify:
LD r32, r254, 0a, 16h LD r32, r254, 0a, 16h
ADDI64 r254, r254, 16d ADDI64 r254, r254, 16d
JALA r0, r31, 0a JALA r0, r31, 0a
code size: 247 code size: 244
ret: 0 ret: 0
status: Ok(()) status: Ok(())

View file

@ -20,11 +20,9 @@ create_back_buffer:
2: JLTS r32, r33, :3 2: JLTS r32, r33, :3
CP r2, r34 CP r2, r34
JAL r31, r0, :request_page JAL r31, r0, :request_page
CP r0, r1
JMP :4 JMP :4
3: CP r2, r32 3: CP r2, r32
JAL r31, r0, :request_page JAL r31, r0, :request_page
CP r0, r1
4: SUB64 r32, r32, r33 4: SUB64 r32, r32, r33
JMP :5 JMP :5
1: LD r31, r254, 0a, 48h 1: LD r31, r254, 0a, 48h
@ -36,29 +34,28 @@ main:
LI64 r32, 400d LI64 r32, 400d
CP r2, r32 CP r2, r32
JAL r31, r0, :create_back_buffer JAL r31, r0, :create_back_buffer
CP r0, r1
LD r31, r254, 0a, 24h LD r31, r254, 0a, 24h
ADDI64 r254, r254, 24d ADDI64 r254, r254, 24d
JALA r0, r31, 0a JALA r0, r31, 0a
request_page: request_page:
ADDI64 r254, r254, -40d ADDI64 r254, r254, -32d
ST r32, r254, 0a, 40h ST r32, r254, 0a, 32h
CP r13, r2 CP r13, r2
LRA r14, r0, :"\0\u{1}xxxxxxxx\0" LRA r14, r0, :"\0\u{1}xxxxxxxx\0"
ST r13, r14, 1a, 1h ST r13, r14, 1a, 1h
LI64 r15, 12d LI64 r13, 12d
LI64 r16, 2d LI64 r15, 2d
LI64 r17, 3d LI64 r16, 3d
CP r2, r17 CP r2, r16
CP r3, r16 CP r3, r15
CP r4, r14 CP r4, r14
CP r5, r15 CP r5, r13
ECA ECA
CP r13, r1 CP r13, r1
CP r1, r13 CP r1, r13
LD r32, r254, 0a, 40h LD r32, r254, 0a, 32h
ADDI64 r254, r254, 40d ADDI64 r254, r254, 32d
JALA r0, r31, 0a JALA r0, r31, 0a
code size: 408 code size: 399
ret: 42 ret: 42
status: Ok(()) status: Ok(())

View file

@ -7,7 +7,6 @@ do_stuff:
ADDI64 r254, r254, 8d ADDI64 r254, r254, 8d
JALA r0, r31, 0a JALA r0, r31, 0a
just_read: just_read:
CP r0, r2
JALA r0, r31, 0a JALA r0, r31, 0a
main: main:
ADDI64 r254, r254, -88d ADDI64 r254, r254, -88d
@ -75,6 +74,6 @@ optionala:
LD r32, r254, 48a, 32h LD r32, r254, 48a, 32h
ADDI64 r254, r254, 80d ADDI64 r254, r254, 80d
JALA r0, r31, 0a JALA r0, r31, 0a
code size: 670 code size: 667
ret: 100 ret: 100
status: Ok(()) status: Ok(())

View file

@ -17,8 +17,6 @@ main:
maina: maina:
ADDI64 r254, r254, -68d ADDI64 r254, r254, -68d
ST r31, r254, 20a, 48h ST r31, r254, 20a, 48h
CP r0, r3
CP r0, r4
ADDI64 r32, r254, 16d ADDI64 r32, r254, 16d
JAL r31, r0, :small_struct JAL r31, r0, :small_struct
ST r1, r32, 0a, 4h ST r1, r32, 0a, 4h
@ -55,6 +53,6 @@ small_struct:
LD r32, r254, 4a, 8h LD r32, r254, 4a, 8h
ADDI64 r254, r254, 12d ADDI64 r254, r254, 12d
JALA r0, r31, 0a JALA r0, r31, 0a
code size: 591 code size: 585
ret: 2 ret: 2
status: Ok(()) status: Ok(())