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Fix SROA without deaggregation.

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This commit is contained in:
Camille GILLOT 2023-02-04 14:39:42 +00:00
parent 3de7d7fb22
commit 0843acbea6
10 changed files with 175 additions and 128 deletions
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127
compiler/rustc_mir_transform/src/sroa.rs
View file

@ -2,6 +2,7 @@ use crate::MirPass;
use rustc_data_structures::fx::{FxIndexMap, IndexEntry};
use rustc_index::bit_set::BitSet;
use rustc_index::vec::IndexVec;
use rustc_middle::mir::patch::MirPatch;
use rustc_middle::mir::visit::*;
use rustc_middle::mir::*;
use rustc_middle::ty::TyCtxt;
@ -13,7 +14,9 @@ impl<'tcx> MirPass<'tcx> for ScalarReplacementOfAggregates {
sess.mir_opt_level() >= 3
}
#[instrument(level = "debug", skip(self, tcx, body))]
fn run_pass(&self, tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
debug!(def_id = ?body.source.def_id());
let escaping = escaping_locals(&*body);
debug!(?escaping);
let replacements = compute_flattening(tcx, body, escaping);
@ -69,15 +72,28 @@ fn escaping_locals(body: &Body<'_>) -> BitSet<Local> {
self.super_rvalue(rvalue, location)
}
fn visit_statement(&mut self, statement: &Statement<'tcx>, location: Location) {
if let StatementKind::StorageLive(..)
| StatementKind::StorageDead(..)
| StatementKind::Deinit(..) = statement.kind
{
// Storage statements are expanded in run_pass.
fn visit_assign(
&mut self,
lvalue: &Place<'tcx>,
rvalue: &Rvalue<'tcx>,
location: Location,
) {
if lvalue.as_local().is_some() && let Rvalue::Aggregate(..) = rvalue {
// Aggregate assignments are expanded in run_pass.
self.visit_rvalue(rvalue, location);
return;
}
self.super_statement(statement, location)
self.super_assign(lvalue, rvalue, location)
}
fn visit_statement(&mut self, statement: &Statement<'tcx>, location: Location) {
match statement.kind {
// Storage statements are expanded in run_pass.
StatementKind::StorageLive(..)
| StatementKind::StorageDead(..)
| StatementKind::Deinit(..) => return,
_ => self.super_statement(statement, location),
}
}
fn visit_terminator(&mut self, terminator: &Terminator<'tcx>, location: Location) {
@ -192,6 +208,7 @@ fn replace_flattened_locals<'tcx>(
replacements,
all_dead_locals,
fragments,
patch: MirPatch::new(body),
};
for (bb, data) in body.basic_blocks.as_mut_preserves_cfg().iter_enumerated_mut() {
visitor.visit_basic_block_data(bb, data);
@ -205,6 +222,7 @@ fn replace_flattened_locals<'tcx>(
for var_debug_info in &mut body.var_debug_info {
visitor.visit_var_debug_info(var_debug_info);
}
visitor.patch.apply(body);
}
struct ReplacementVisitor<'tcx, 'll> {
@ -218,6 +236,7 @@ struct ReplacementVisitor<'tcx, 'll> {
/// Pre-computed list of all "new" locals for each "old" local. This is used to expand storage
/// and deinit statement and debuginfo.
fragments: IndexVec<Local, Vec<(&'tcx [PlaceElem<'tcx>], Local)>>,
patch: MirPatch<'tcx>,
}
impl<'tcx, 'll> ReplacementVisitor<'tcx, 'll> {
@ -255,13 +274,64 @@ impl<'tcx, 'll> MutVisitor<'tcx> for ReplacementVisitor<'tcx, 'll> {
}
fn visit_statement(&mut self, statement: &mut Statement<'tcx>, location: Location) {
if let StatementKind::StorageLive(..)
| StatementKind::StorageDead(..)
| StatementKind::Deinit(..) = statement.kind
{
// Storage statements are expanded in run_pass.
match statement.kind {
StatementKind::StorageLive(l) => {
if self.all_dead_locals.contains(l) {
let final_locals = &self.fragments[l];
for &(_, fl) in final_locals {
self.patch.add_statement(location, StatementKind::StorageLive(fl));
}
statement.make_nop();
}
return;
}
StatementKind::StorageDead(l) => {
if self.all_dead_locals.contains(l) {
let final_locals = &self.fragments[l];
for &(_, fl) in final_locals {
self.patch.add_statement(location, StatementKind::StorageDead(fl));
}
statement.make_nop();
}
return;
}
StatementKind::Deinit(box ref place) => {
if let Some(local) = place.as_local()
&& self.all_dead_locals.contains(local)
{
let final_locals = &self.fragments[local];
for &(_, fl) in final_locals {
self.patch.add_statement(
location,
StatementKind::Deinit(Box::new(fl.into())),
);
}
statement.make_nop();
return;
}
}
StatementKind::Assign(box (ref place, Rvalue::Aggregate(_, ref operands))) => {
if let Some(local) = place.as_local()
&& self.all_dead_locals.contains(local)
{
let final_locals = &self.fragments[local];
for &(projection, fl) in final_locals {
let &[PlaceElem::Field(index, _)] = projection else { bug!() };
let index = index.as_usize();
let rvalue = Rvalue::Use(operands[index].clone());
self.patch.add_statement(
location,
StatementKind::Assign(Box::new((fl.into(), rvalue))),
);
}
statement.make_nop();
return;
}
}
_ => {}
}
self.super_statement(statement, location)
}
@ -309,39 +379,6 @@ impl<'tcx, 'll> MutVisitor<'tcx> for ReplacementVisitor<'tcx, 'll> {
}
}
fn visit_basic_block_data(&mut self, bb: BasicBlock, bbdata: &mut BasicBlockData<'tcx>) {
self.super_basic_block_data(bb, bbdata);
#[derive(Debug)]
enum Stmt {
StorageLive,
StorageDead,
Deinit,
}
bbdata.expand_statements(|stmt| {
let source_info = stmt.source_info;
let (stmt, origin_local) = match &stmt.kind {
StatementKind::StorageLive(l) => (Stmt::StorageLive, *l),
StatementKind::StorageDead(l) => (Stmt::StorageDead, *l),
StatementKind::Deinit(p) if let Some(l) = p.as_local() => (Stmt::Deinit, l),
_ => return None,
};
if !self.all_dead_locals.contains(origin_local) {
return None;
}
let final_locals = self.fragments.get(origin_local)?;
Some(final_locals.iter().map(move |&(_, l)| {
let kind = match stmt {
Stmt::StorageLive => StatementKind::StorageLive(l),
Stmt::StorageDead => StatementKind::StorageDead(l),
Stmt::Deinit => StatementKind::Deinit(Box::new(l.into())),
};
Statement { source_info, kind }
}))
});
}
fn visit_local(&mut self, local: &mut Local, _: PlaceContext, _: Location) {
assert!(!self.all_dead_locals.contains(*local));
}

30
tests/mir-opt/const_debuginfo.main.ConstDebugInfo.diff
View file

@ -8,8 +8,8 @@
let mut _6: u8; // in scope 0 at $DIR/const_debuginfo.rs:+4:15: +4:16
let mut _7: u8; // in scope 0 at $DIR/const_debuginfo.rs:+4:19: +4:20
let mut _8: u8; // in scope 0 at $DIR/const_debuginfo.rs:+4:23: +4:24
let mut _14: u32; // in scope 0 at $DIR/const_debuginfo.rs:+13:13: +13:16
let mut _15: u32; // in scope 0 at $DIR/const_debuginfo.rs:+13:19: +13:22
let mut _13: u32; // in scope 0 at $DIR/const_debuginfo.rs:+13:13: +13:16
let mut _14: u32; // in scope 0 at $DIR/const_debuginfo.rs:+13:19: +13:22
scope 1 {
- debug x => _1; // in scope 1 at $DIR/const_debuginfo.rs:+1:9: +1:10
+ debug x => const 1_u8; // in scope 1 at $DIR/const_debuginfo.rs:+1:9: +1:10
@ -35,12 +35,13 @@
let _11: std::option::Option<u16>; // in scope 6 at $DIR/const_debuginfo.rs:+10:9: +10:10
scope 7 {
debug o => _11; // in scope 7 at $DIR/const_debuginfo.rs:+10:9: +10:10
let _12: Point; // in scope 7 at $DIR/const_debuginfo.rs:+12:9: +12:10
let _15: u32; // in scope 7 at $DIR/const_debuginfo.rs:+12:9: +12:10
let _16: u32; // in scope 7 at $DIR/const_debuginfo.rs:+12:9: +12:10
scope 8 {
debug p => _12; // in scope 8 at $DIR/const_debuginfo.rs:+12:9: +12:10
let _13: u32; // in scope 8 at $DIR/const_debuginfo.rs:+13:9: +13:10
debug p => Point{ .0 => _15, .1 => _16, }; // in scope 8 at $DIR/const_debuginfo.rs:+12:9: +12:10
let _12: u32; // in scope 8 at $DIR/const_debuginfo.rs:+13:9: +13:10
scope 9 {
- debug a => _13; // in scope 9 at $DIR/const_debuginfo.rs:+13:9: +13:10
- debug a => _12; // in scope 9 at $DIR/const_debuginfo.rs:+13:9: +13:10
+ debug a => const 64_u32; // in scope 9 at $DIR/const_debuginfo.rs:+13:9: +13:10
}
}
@ -70,18 +71,11 @@
_10 = (const true, const false, const 123_u32); // scope 5 at $DIR/const_debuginfo.rs:+8:13: +8:34
StorageLive(_11); // scope 6 at $DIR/const_debuginfo.rs:+10:9: +10:10
_11 = Option::<u16>::Some(const 99_u16); // scope 6 at $DIR/const_debuginfo.rs:+10:13: +10:24
StorageLive(_12); // scope 7 at $DIR/const_debuginfo.rs:+12:9: +12:10
_12 = Point { x: const 32_u32, y: const 32_u32 }; // scope 7 at $DIR/const_debuginfo.rs:+12:13: +12:35
StorageLive(_13); // scope 8 at $DIR/const_debuginfo.rs:+13:9: +13:10
StorageLive(_14); // scope 8 at $DIR/const_debuginfo.rs:+13:13: +13:16
_14 = const 32_u32; // scope 8 at $DIR/const_debuginfo.rs:+13:13: +13:16
StorageLive(_15); // scope 8 at $DIR/const_debuginfo.rs:+13:19: +13:22
_15 = const 32_u32; // scope 8 at $DIR/const_debuginfo.rs:+13:19: +13:22
_13 = const 64_u32; // scope 8 at $DIR/const_debuginfo.rs:+13:13: +13:22
StorageDead(_15); // scope 8 at $DIR/const_debuginfo.rs:+13:21: +13:22
StorageDead(_14); // scope 8 at $DIR/const_debuginfo.rs:+13:21: +13:22
StorageDead(_13); // scope 8 at $DIR/const_debuginfo.rs:+14:1: +14:2
StorageDead(_12); // scope 7 at $DIR/const_debuginfo.rs:+14:1: +14:2
_15 = const 32_u32; // scope 7 at $DIR/const_debuginfo.rs:+12:13: +12:35
_16 = const 32_u32; // scope 7 at $DIR/const_debuginfo.rs:+12:13: +12:35
StorageLive(_12); // scope 8 at $DIR/const_debuginfo.rs:+13:9: +13:10
_12 = const 64_u32; // scope 8 at $DIR/const_debuginfo.rs:+13:13: +13:22
StorageDead(_12); // scope 8 at $DIR/const_debuginfo.rs:+14:1: +14:2
StorageDead(_11); // scope 6 at $DIR/const_debuginfo.rs:+14:1: +14:2
StorageDead(_10); // scope 5 at $DIR/const_debuginfo.rs:+14:1: +14:2
StorageDead(_9); // scope 4 at $DIR/const_debuginfo.rs:+14:1: +14:2

41
tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.diff
View file

@ -4,18 +4,19 @@
fn main() -> () {
let mut _0: (); // return place in scope 0 at $DIR/mutable_variable_unprop_assign.rs:+0:11: +0:11
let _1: i32; // in scope 0 at $DIR/mutable_variable_unprop_assign.rs:+1:9: +1:10
let mut _3: i32; // in scope 0 at $DIR/mutable_variable_unprop_assign.rs:+3:11: +3:12
let mut _2: i32; // in scope 0 at $DIR/mutable_variable_unprop_assign.rs:+3:11: +3:12
scope 1 {
debug a => _1; // in scope 1 at $DIR/mutable_variable_unprop_assign.rs:+1:9: +1:10
let mut _2: (i32, i32); // in scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:9: +2:14
let mut _5: i32; // in scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:9: +2:14
let mut _6: i32; // in scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:9: +2:14
scope 2 {
debug x => _2; // in scope 2 at $DIR/mutable_variable_unprop_assign.rs:+2:9: +2:14
let _4: i32; // in scope 2 at $DIR/mutable_variable_unprop_assign.rs:+4:9: +4:10
debug x => (i32, i32){ .1 => _5, .0 => _6, }; // in scope 2 at $DIR/mutable_variable_unprop_assign.rs:+2:9: +2:14
let _3: i32; // in scope 2 at $DIR/mutable_variable_unprop_assign.rs:+4:9: +4:10
scope 3 {
debug y => _4; // in scope 3 at $DIR/mutable_variable_unprop_assign.rs:+4:9: +4:10
let _5: i32; // in scope 3 at $DIR/mutable_variable_unprop_assign.rs:+5:9: +5:10
debug y => _3; // in scope 3 at $DIR/mutable_variable_unprop_assign.rs:+4:9: +4:10
let _4: i32; // in scope 3 at $DIR/mutable_variable_unprop_assign.rs:+5:9: +5:10
scope 4 {
debug z => _5; // in scope 4 at $DIR/mutable_variable_unprop_assign.rs:+5:9: +5:10
debug z => _6; // in scope 4 at $DIR/mutable_variable_unprop_assign.rs:+5:9: +5:10
}
}
}
@ -30,21 +31,17 @@
}
bb1: {
StorageLive(_2); // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:9: +2:14
- _2 = (const 1_i32, const 2_i32); // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:29: +2:35
+ _2 = const (1_i32, 2_i32); // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:29: +2:35
StorageLive(_3); // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+3:11: +3:12
_3 = _1; // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+3:11: +3:12
(_2.1: i32) = move _3; // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+3:5: +3:12
StorageDead(_3); // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+3:11: +3:12
StorageLive(_4); // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+4:9: +4:10
_4 = (_2.1: i32); // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+4:13: +4:16
StorageLive(_5); // scope 3 at $DIR/mutable_variable_unprop_assign.rs:+5:9: +5:10
- _5 = (_2.0: i32); // scope 3 at $DIR/mutable_variable_unprop_assign.rs:+5:13: +5:16
+ _5 = const 1_i32; // scope 3 at $DIR/mutable_variable_unprop_assign.rs:+5:13: +5:16
StorageDead(_5); // scope 3 at $DIR/mutable_variable_unprop_assign.rs:+6:1: +6:2
StorageDead(_4); // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+6:1: +6:2
StorageDead(_2); // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+6:1: +6:2
StorageLive(_5); // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:9: +2:14
_5 = const 2_i32; // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:29: +2:35
_6 = const 1_i32; // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+2:29: +2:35
StorageLive(_2); // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+3:11: +3:12
_2 = _1; // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+3:11: +3:12
_5 = move _2; // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+3:5: +3:12
StorageDead(_2); // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+3:11: +3:12
StorageLive(_3); // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+4:9: +4:10
_3 = _5; // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+4:13: +4:16
StorageDead(_3); // scope 2 at $DIR/mutable_variable_unprop_assign.rs:+6:1: +6:2
StorageDead(_5); // scope 1 at $DIR/mutable_variable_unprop_assign.rs:+6:1: +6:2
StorageDead(_1); // scope 0 at $DIR/mutable_variable_unprop_assign.rs:+6:1: +6:2
return; // scope 0 at $DIR/mutable_variable_unprop_assign.rs:+6:2: +6:2
}

12
tests/mir-opt/const_prop/optimizes_into_variable.main.ConstProp.64bit.diff
View file

@ -9,7 +9,7 @@
let _5: usize; // in scope 0 at $DIR/optimizes_into_variable.rs:+2:32: +2:33
let mut _6: usize; // in scope 0 at $DIR/optimizes_into_variable.rs:+2:13: +2:34
let mut _7: bool; // in scope 0 at $DIR/optimizes_into_variable.rs:+2:13: +2:34
let mut _9: Point; // in scope 0 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
let mut _9: u32; // in scope 0 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
scope 1 {
debug x => _1; // in scope 1 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
let _3: i32; // in scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
@ -17,7 +17,7 @@
debug y => _3; // in scope 2 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
let _8: u32; // in scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
scope 3 {
debug z => _8; // in scope 3 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
debug z => _9; // in scope 3 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
}
}
}
@ -50,13 +50,7 @@
+ _3 = const 3_i32; // scope 1 at $DIR/optimizes_into_variable.rs:+2:13: +2:34
StorageDead(_5); // scope 1 at $DIR/optimizes_into_variable.rs:+2:34: +2:35
StorageDead(_4); // scope 1 at $DIR/optimizes_into_variable.rs:+2:34: +2:35
StorageLive(_8); // scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
StorageLive(_9); // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
_9 = Point { x: const 12_u32, y: const 42_u32 }; // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
- _8 = (_9.1: u32); // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:38
+ _8 = const 42_u32; // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:38
StorageDead(_9); // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
StorageDead(_8); // scope 2 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
_9 = const 42_u32; // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
StorageDead(_3); // scope 1 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
StorageDead(_1); // scope 0 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
return; // scope 0 at $DIR/optimizes_into_variable.rs:+4:2: +4:2

4
tests/mir-opt/const_prop/optimizes_into_variable.main.PreCodegen.after.64bit.mir
View file

@ -3,12 +3,12 @@
fn main() -> () {
let mut _0: (); // return place in scope 0 at $DIR/optimizes_into_variable.rs:+0:11: +0:11
let _1: i32; // in scope 0 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
let mut _3: u32; // in scope 0 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
scope 1 {
debug x => _1; // in scope 1 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
let _2: i32; // in scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
scope 2 {
debug y => _2; // in scope 2 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
let _3: u32; // in scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
scope 3 {
debug z => _3; // in scope 3 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
}
@ -18,8 +18,6 @@ fn main() -> () {
bb0: {
StorageLive(_1); // scope 0 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
StorageLive(_2); // scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
StorageLive(_3); // scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
StorageDead(_3); // scope 2 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
StorageDead(_2); // scope 1 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
StorageDead(_1); // scope 0 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
return; // scope 0 at $DIR/optimizes_into_variable.rs:+4:2: +4:2

16
tests/mir-opt/const_prop/optimizes_into_variable.main.ScalarReplacementOfAggregates.64bit.diff
View file

@ -10,6 +10,7 @@
let mut _6: usize; // in scope 0 at $DIR/optimizes_into_variable.rs:+2:13: +2:34
let mut _7: bool; // in scope 0 at $DIR/optimizes_into_variable.rs:+2:13: +2:34
let mut _9: Point; // in scope 0 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
+ let mut _10: u32; // in scope 0 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
scope 1 {
debug x => _1; // in scope 1 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
let _3: i32; // in scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
@ -45,10 +46,17 @@
StorageDead(_5); // scope 1 at $DIR/optimizes_into_variable.rs:+2:34: +2:35
StorageDead(_4); // scope 1 at $DIR/optimizes_into_variable.rs:+2:34: +2:35
StorageLive(_8); // scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
StorageLive(_9); // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
_9 = Point { x: const 12_u32, y: const 42_u32 }; // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
_8 = (_9.1: u32); // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:38
StorageDead(_9); // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
- StorageLive(_9); // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
- _9 = Point { x: const 12_u32, y: const 42_u32 }; // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
- _8 = (_9.1: u32); // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:38
- StorageDead(_9); // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
+ StorageLive(_10); // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
+ nop; // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
+ _10 = const 42_u32; // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
+ nop; // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
+ _8 = _10; // scope 2 at $DIR/optimizes_into_variable.rs:+3:13: +3:38
+ StorageDead(_10); // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
+ nop; // scope 2 at $DIR/optimizes_into_variable.rs:+3:38: +3:39
nop; // scope 0 at $DIR/optimizes_into_variable.rs:+0:11: +4:2
StorageDead(_8); // scope 2 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
StorageDead(_3); // scope 1 at $DIR/optimizes_into_variable.rs:+4:1: +4:2

4
tests/mir-opt/const_prop/optimizes_into_variable.main.SimplifyLocals-final.after.64bit.mir
View file

@ -3,12 +3,12 @@
fn main() -> () {
let mut _0: (); // return place in scope 0 at $DIR/optimizes_into_variable.rs:+0:11: +0:11
let _1: i32; // in scope 0 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
let mut _3: u32; // in scope 0 at $DIR/optimizes_into_variable.rs:+3:13: +3:36
scope 1 {
debug x => _1; // in scope 1 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
let _2: i32; // in scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
scope 2 {
debug y => _2; // in scope 2 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
let _3: u32; // in scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
scope 3 {
debug z => _3; // in scope 3 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
}
@ -18,8 +18,6 @@ fn main() -> () {
bb0: {
StorageLive(_1); // scope 0 at $DIR/optimizes_into_variable.rs:+1:9: +1:10
StorageLive(_2); // scope 1 at $DIR/optimizes_into_variable.rs:+2:9: +2:10
StorageLive(_3); // scope 2 at $DIR/optimizes_into_variable.rs:+3:9: +3:10
StorageDead(_3); // scope 2 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
StorageDead(_2); // scope 1 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
StorageDead(_1); // scope 0 at $DIR/optimizes_into_variable.rs:+4:1: +4:2
return; // scope 0 at $DIR/optimizes_into_variable.rs:+4:2: +4:2

14
tests/mir-opt/simple_option_map_e2e.ezmap.PreCodegen.after.mir
View file

@ -4,25 +4,22 @@ fn ezmap(_1: Option<i32>) -> Option<i32> {
debug x => _1; // in scope 0 at $DIR/simple_option_map_e2e.rs:+0:14: +0:15
let mut _0: std::option::Option<i32>; // return place in scope 0 at $DIR/simple_option_map_e2e.rs:+0:33: +0:44
let mut _2: [closure@$DIR/simple_option_map_e2e.rs:14:12: 14:15]; // in scope 0 at $DIR/simple_option_map_e2e.rs:+1:12: +1:21
let mut _7: i32; // in scope 0 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
scope 1 (inlined map::<i32, i32, [closure@$DIR/simple_option_map_e2e.rs:14:12: 14:15]>) { // at $DIR/simple_option_map_e2e.rs:14:5: 14:22
debug slf => _1; // in scope 1 at $DIR/simple_option_map_e2e.rs:2:17: 2:20
debug f => _2; // in scope 1 at $DIR/simple_option_map_e2e.rs:2:33: 2:34
let mut _3: isize; // in scope 1 at $DIR/simple_option_map_e2e.rs:7:9: 7:16
let _4: i32; // in scope 1 at $DIR/simple_option_map_e2e.rs:7:14: 7:15
let mut _5: i32; // in scope 1 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
let mut _6: (i32,); // in scope 1 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
scope 2 {
debug x => _4; // in scope 2 at $DIR/simple_option_map_e2e.rs:7:14: 7:15
scope 3 (inlined ezmap::{closure#0}) { // at $DIR/simple_option_map_e2e.rs:7:25: 7:29
debug n => _7; // in scope 3 at $DIR/simple_option_map_e2e.rs:+1:13: +1:14
debug n => _4; // in scope 3 at $DIR/simple_option_map_e2e.rs:+1:13: +1:14
}
}
}
bb0: {
StorageLive(_2); // scope 0 at $DIR/simple_option_map_e2e.rs:+1:12: +1:21
StorageLive(_4); // scope 0 at $DIR/simple_option_map_e2e.rs:+1:5: +1:22
_3 = discriminant(_1); // scope 1 at $DIR/simple_option_map_e2e.rs:6:11: 6:14
switchInt(move _3) -> [0: bb1, 1: bb3, otherwise: bb2]; // scope 1 at $DIR/simple_option_map_e2e.rs:6:5: 6:14
}
@ -39,20 +36,13 @@ fn ezmap(_1: Option<i32>) -> Option<i32> {
bb3: {
_4 = move ((_1 as Some).0: i32); // scope 1 at $DIR/simple_option_map_e2e.rs:7:14: 7:15
StorageLive(_5); // scope 2 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
StorageLive(_6); // scope 2 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
_6 = (move _4,); // scope 2 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
StorageLive(_7); // scope 2 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
_7 = move (_6.0: i32); // scope 2 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
_5 = Add(_7, const 1_i32); // scope 3 at $DIR/simple_option_map_e2e.rs:+1:16: +1:21
StorageDead(_7); // scope 2 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
StorageDead(_6); // scope 2 at $DIR/simple_option_map_e2e.rs:7:28: 7:29
_5 = Add(_4, const 1_i32); // scope 3 at $DIR/simple_option_map_e2e.rs:+1:16: +1:21
_0 = Option::<i32>::Some(move _5); // scope 2 at $DIR/simple_option_map_e2e.rs:7:20: 7:30
StorageDead(_5); // scope 2 at $DIR/simple_option_map_e2e.rs:7:29: 7:30
goto -> bb4; // scope 1 at $DIR/simple_option_map_e2e.rs:10:1: 10:2
}
bb4: {
StorageDead(_4); // scope 0 at $DIR/simple_option_map_e2e.rs:+1:5: +1:22
StorageDead(_2); // scope 0 at $DIR/simple_option_map_e2e.rs:+1:21: +1:22
return; // scope 0 at $DIR/simple_option_map_e2e.rs:+2:2: +2:2
}

37
tests/mir-opt/sroa.flat.ScalarReplacementOfAggregates.diff
View file

@ -10,6 +10,10 @@
let mut _5: Foo; // in scope 0 at $DIR/sroa.rs:+1:30: +1:70
let mut _6: (); // in scope 0 at $DIR/sroa.rs:+1:45: +1:47
let mut _7: std::option::Option<isize>; // in scope 0 at $DIR/sroa.rs:+1:60: +1:68
+ let mut _8: u8; // in scope 0 at $DIR/sroa.rs:+1:30: +1:70
+ let mut _9: (); // in scope 0 at $DIR/sroa.rs:+1:30: +1:70
+ let mut _10: &str; // in scope 0 at $DIR/sroa.rs:+1:30: +1:70
+ let mut _11: std::option::Option<isize>; // in scope 0 at $DIR/sroa.rs:+1:30: +1:70
scope 1 {
debug a => _1; // in scope 1 at $DIR/sroa.rs:+1:15: +1:16
debug b => _2; // in scope 1 at $DIR/sroa.rs:+1:18: +1:19
@ -26,26 +30,45 @@
}
bb0: {
StorageLive(_5); // scope 0 at $DIR/sroa.rs:+1:30: +1:70
- StorageLive(_5); // scope 0 at $DIR/sroa.rs:+1:30: +1:70
+ StorageLive(_8); // scope 0 at $DIR/sroa.rs:+1:30: +1:70
+ StorageLive(_9); // scope 0 at $DIR/sroa.rs:+1:30: +1:70
+ StorageLive(_10); // scope 0 at $DIR/sroa.rs:+1:30: +1:70
+ StorageLive(_11); // scope 0 at $DIR/sroa.rs:+1:30: +1:70
+ nop; // scope 0 at $DIR/sroa.rs:+1:30: +1:70
StorageLive(_6); // scope 0 at $DIR/sroa.rs:+1:45: +1:47
_6 = (); // scope 0 at $DIR/sroa.rs:+1:45: +1:47
StorageLive(_7); // scope 0 at $DIR/sroa.rs:+1:60: +1:68
_7 = Option::<isize>::Some(const -4_isize); // scope 0 at $DIR/sroa.rs:+1:60: +1:68
_5 = Foo { a: const 5_u8, b: move _6, c: const "a", d: move _7 }; // scope 0 at $DIR/sroa.rs:+1:30: +1:70
- _5 = Foo { a: const 5_u8, b: move _6, c: const "a", d: move _7 }; // scope 0 at $DIR/sroa.rs:+1:30: +1:70
+ _8 = const 5_u8; // scope 0 at $DIR/sroa.rs:+1:30: +1:70
+ _9 = move _6; // scope 0 at $DIR/sroa.rs:+1:30: +1:70
+ _10 = const "a"; // scope 0 at $DIR/sroa.rs:+1:30: +1:70
// mir::Constant
// + span: $DIR/sroa.rs:57:52: 57:55
// + literal: Const { ty: &str, val: Value(Slice(..)) }
+ _11 = move _7; // scope 0 at $DIR/sroa.rs:+1:30: +1:70
+ nop; // scope 0 at $DIR/sroa.rs:+1:30: +1:70
StorageDead(_7); // scope 0 at $DIR/sroa.rs:+1:69: +1:70
StorageDead(_6); // scope 0 at $DIR/sroa.rs:+1:69: +1:70
StorageLive(_1); // scope 0 at $DIR/sroa.rs:+1:15: +1:16
_1 = (_5.0: u8); // scope 0 at $DIR/sroa.rs:+1:15: +1:16
- _1 = (_5.0: u8); // scope 0 at $DIR/sroa.rs:+1:15: +1:16
+ _1 = _8; // scope 0 at $DIR/sroa.rs:+1:15: +1:16
StorageLive(_2); // scope 0 at $DIR/sroa.rs:+1:18: +1:19
_2 = (_5.1: ()); // scope 0 at $DIR/sroa.rs:+1:18: +1:19
- _2 = (_5.1: ()); // scope 0 at $DIR/sroa.rs:+1:18: +1:19
+ _2 = _9; // scope 0 at $DIR/sroa.rs:+1:18: +1:19
StorageLive(_3); // scope 0 at $DIR/sroa.rs:+1:21: +1:22
_3 = (_5.2: &str); // scope 0 at $DIR/sroa.rs:+1:21: +1:22
- _3 = (_5.2: &str); // scope 0 at $DIR/sroa.rs:+1:21: +1:22
+ _3 = _10; // scope 0 at $DIR/sroa.rs:+1:21: +1:22
StorageLive(_4); // scope 0 at $DIR/sroa.rs:+1:24: +1:25
_4 = (_5.3: std::option::Option<isize>); // scope 0 at $DIR/sroa.rs:+1:24: +1:25
StorageDead(_5); // scope 0 at $DIR/sroa.rs:+1:70: +1:71
- _4 = (_5.3: std::option::Option<isize>); // scope 0 at $DIR/sroa.rs:+1:24: +1:25
- StorageDead(_5); // scope 0 at $DIR/sroa.rs:+1:70: +1:71
+ _4 = _11; // scope 0 at $DIR/sroa.rs:+1:24: +1:25
+ StorageDead(_8); // scope 0 at $DIR/sroa.rs:+1:70: +1:71
+ StorageDead(_9); // scope 0 at $DIR/sroa.rs:+1:70: +1:71
+ StorageDead(_10); // scope 0 at $DIR/sroa.rs:+1:70: +1:71
+ StorageDead(_11); // scope 0 at $DIR/sroa.rs:+1:70: +1:71
+ nop; // scope 0 at $DIR/sroa.rs:+1:70: +1:71
_0 = const (); // scope 0 at $DIR/sroa.rs:+0:15: +6:2
StorageDead(_4); // scope 0 at $DIR/sroa.rs:+6:1: +6:2
StorageDead(_3); // scope 0 at $DIR/sroa.rs:+6:1: +6:2

16
tests/mir-opt/sroa.structs.ScalarReplacementOfAggregates.diff
View file

@ -6,15 +6,23 @@
let mut _0: f32; // return place in scope 0 at $DIR/sroa.rs:+0:27: +0:30
let mut _2: structs::U; // in scope 0 at $DIR/sroa.rs:+6:5: +6:21
let mut _3: f32; // in scope 0 at $DIR/sroa.rs:+6:18: +6:19
+ let mut _4: f32; // in scope 0 at $DIR/sroa.rs:+6:5: +6:21
bb0: {
StorageLive(_2); // scope 0 at $DIR/sroa.rs:+6:5: +6:21
- StorageLive(_2); // scope 0 at $DIR/sroa.rs:+6:5: +6:21
+ StorageLive(_4); // scope 0 at $DIR/sroa.rs:+6:5: +6:21
+ nop; // scope 0 at $DIR/sroa.rs:+6:5: +6:21
StorageLive(_3); // scope 0 at $DIR/sroa.rs:+6:18: +6:19
_3 = _1; // scope 0 at $DIR/sroa.rs:+6:18: +6:19
_2 = U { _foo: const 0_usize, a: move _3 }; // scope 0 at $DIR/sroa.rs:+6:5: +6:21
- _2 = U { _foo: const 0_usize, a: move _3 }; // scope 0 at $DIR/sroa.rs:+6:5: +6:21
+ _4 = move _3; // scope 0 at $DIR/sroa.rs:+6:5: +6:21
+ nop; // scope 0 at $DIR/sroa.rs:+6:5: +6:21
StorageDead(_3); // scope 0 at $DIR/sroa.rs:+6:20: +6:21
_0 = (_2.1: f32); // scope 0 at $DIR/sroa.rs:+6:5: +6:23
StorageDead(_2); // scope 0 at $DIR/sroa.rs:+7:1: +7:2
- _0 = (_2.1: f32); // scope 0 at $DIR/sroa.rs:+6:5: +6:23
- StorageDead(_2); // scope 0 at $DIR/sroa.rs:+7:1: +7:2
+ _0 = _4; // scope 0 at $DIR/sroa.rs:+6:5: +6:23
+ StorageDead(_4); // scope 0 at $DIR/sroa.rs:+7:1: +7:2
+ nop; // scope 0 at $DIR/sroa.rs:+7:1: +7:2
return; // scope 0 at $DIR/sroa.rs:+7:2: +7:2
}
}