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Replace ZST operands and debuginfo by constants.

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This commit is contained in:
Camille GILLOT 2023-01-23 22:17:36 +00:00
parent cf8d98b227
commit 9e3f091f2b
15 changed files with 219 additions and 106 deletions
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121
compiler/rustc_mir_transform/src/remove_zsts.rs
View File

@ -1,7 +1,9 @@
//! Removes assignments to ZST places.
use crate::MirPass;
use rustc_middle::mir::{Body, StatementKind};
use rustc_middle::mir::interpret::ConstValue;
use rustc_middle::mir::visit::*;
use rustc_middle::mir::*;
use rustc_middle::ty::{self, Ty, TyCtxt};
pub struct RemoveZsts;
@ -16,38 +18,24 @@ impl<'tcx> MirPass<'tcx> for RemoveZsts {
if tcx.type_of(body.source.def_id()).subst_identity().is_generator() {
return;
}
let param_env = tcx.param_env(body.source.def_id());
let basic_blocks = body.basic_blocks.as_mut_preserves_cfg();
let param_env = tcx.param_env_reveal_all_normalized(body.source.def_id());
let local_decls = &body.local_decls;
for block in basic_blocks {
for statement in block.statements.iter_mut() {
if let StatementKind::Assign(box (place, _)) | StatementKind::Deinit(box place) =
statement.kind
{
let place_ty = place.ty(local_decls, tcx).ty;
if !maybe_zst(place_ty) {
continue;
}
let Ok(layout) = tcx.layout_of(param_env.and(place_ty)) else {
continue;
};
if !layout.is_zst() {
continue;
}
if tcx.consider_optimizing(|| {
format!(
"RemoveZsts - Place: {:?} SourceInfo: {:?}",
place, statement.source_info
)
}) {
statement.make_nop();
}
}
}
let mut replacer = Replacer { tcx, param_env, local_decls };
for var_debug_info in &mut body.var_debug_info {
replacer.visit_var_debug_info(var_debug_info);
}
for (bb, data) in body.basic_blocks.as_mut_preserves_cfg().iter_enumerated_mut() {
replacer.visit_basic_block_data(bb, data);
}
}
}
struct Replacer<'a, 'tcx> {
tcx: TyCtxt<'tcx>,
param_env: ty::ParamEnv<'tcx>,
local_decls: &'a LocalDecls<'tcx>,
}
/// A cheap, approximate check to avoid unnecessary `layout_of` calls.
fn maybe_zst(ty: Ty<'_>) -> bool {
match ty.kind() {
@ -63,3 +51,80 @@ fn maybe_zst(ty: Ty<'_>) -> bool {
_ => false,
}
}
impl<'tcx> Replacer<'_, 'tcx> {
fn is_zst(&self, ty: Ty<'tcx>) -> bool {
if !maybe_zst(ty) {
return false;
}
let Ok(layout) = self.tcx.layout_of(self.param_env.and(ty)) else {
return false;
};
layout.is_zst()
}
fn make_zst(&self, ty: Ty<'tcx>) -> Constant<'tcx> {
debug_assert!(self.is_zst(ty));
Constant {
span: rustc_span::DUMMY_SP,
user_ty: None,
literal: ConstantKind::Val(ConstValue::ZeroSized, ty),
}
}
}
impl<'tcx> MutVisitor<'tcx> for Replacer<'_, 'tcx> {
fn tcx(&self) -> TyCtxt<'tcx> {
self.tcx
}
fn visit_var_debug_info(&mut self, var_debug_info: &mut VarDebugInfo<'tcx>) {
match var_debug_info.value {
VarDebugInfoContents::Const(_) => {}
VarDebugInfoContents::Place(place) => {
let place_ty = place.ty(self.local_decls, self.tcx).ty;
if self.is_zst(place_ty) {
var_debug_info.value = VarDebugInfoContents::Const(self.make_zst(place_ty))
}
}
VarDebugInfoContents::Composite { ty, fragments: _ } => {
if self.is_zst(ty) {
var_debug_info.value = VarDebugInfoContents::Const(self.make_zst(ty))
}
}
}
}
fn visit_operand(&mut self, operand: &mut Operand<'tcx>, loc: Location) {
if let Operand::Constant(_) = operand {
return;
}
let op_ty = operand.ty(self.local_decls, self.tcx);
if self.is_zst(op_ty)
&& self.tcx.consider_optimizing(|| {
format!("RemoveZsts - Operand: {:?} Location: {:?}", operand, loc)
})
{
*operand = Operand::Constant(Box::new(self.make_zst(op_ty)))
}
}
fn visit_statement(&mut self, statement: &mut Statement<'tcx>, loc: Location) {
if let StatementKind::Assign(box (place, _)) | StatementKind::Deinit(box place) =
statement.kind
{
let place_ty = place.ty(self.local_decls, self.tcx).ty;
if self.is_zst(place_ty)
&& self.tcx.consider_optimizing(|| {
format!(
"RemoveZsts - Place: {:?} SourceInfo: {:?}",
place, statement.source_info
)
})
{
statement.make_nop();
}
}
self.super_statement(statement, loc);
}
}

10
tests/mir-opt/const_prop/invalid_constant.main.ConstProp.diff
View File

@ -12,12 +12,10 @@
let _3: [E; 1]; // in scope 1 at $DIR/invalid_constant.rs:+13:9: +13:21
scope 3 {
debug _invalid_tag => _3; // in scope 3 at $DIR/invalid_constant.rs:+13:9: +13:21
let _6: [Empty; 1]; // in scope 3 at $DIR/invalid_constant.rs:+20:9: +20:31
scope 5 {
debug _enum_without_variants => _6; // in scope 5 at $DIR/invalid_constant.rs:+20:9: +20:31
let _7: main::Str<"<22><><EFBFBD>">; // in scope 5 at $DIR/invalid_constant.rs:+24:9: +24:22
debug _enum_without_variants => const [ZeroSized: Empty]; // in scope 5 at $DIR/invalid_constant.rs:+20:9: +20:31
scope 7 {
debug _non_utf8_str => _7; // in scope 7 at $DIR/invalid_constant.rs:+24:9: +24:22
debug _non_utf8_str => const Str::<"<22><><EFBFBD>">; // in scope 7 at $DIR/invalid_constant.rs:+24:9: +24:22
}
}
scope 6 {
@ -52,10 +50,6 @@
+ // + literal: Const { ty: E, val: Value(Scalar(0x00000004)) }
StorageDead(_4); // scope 1 at $DIR/invalid_constant.rs:+13:59: +13:60
StorageDead(_5); // scope 1 at $DIR/invalid_constant.rs:+13:60: +13:61
StorageLive(_6); // scope 3 at $DIR/invalid_constant.rs:+20:9: +20:31
StorageLive(_7); // scope 5 at $DIR/invalid_constant.rs:+24:9: +24:22
StorageDead(_7); // scope 5 at $DIR/invalid_constant.rs:+27:1: +27:2
StorageDead(_6); // scope 3 at $DIR/invalid_constant.rs:+27:1: +27:2
StorageDead(_3); // scope 1 at $DIR/invalid_constant.rs:+27:1: +27:2
StorageDead(_1); // scope 0 at $DIR/invalid_constant.rs:+27:1: +27:2
return; // scope 0 at $DIR/invalid_constant.rs:+27:2: +27:2

70
tests/mir-opt/const_prop/invalid_constant.main.RemoveZsts.diff Normal file
View File

@ -0,0 +1,70 @@
- // MIR for `main` before RemoveZsts
+ // MIR for `main` after RemoveZsts
fn main() -> () {
let mut _0: (); // return place in scope 0 at $DIR/invalid_constant.rs:+0:11: +0:11
let _1: char; // in scope 0 at $DIR/invalid_constant.rs:+6:9: +6:22
let mut _2: main::InvalidChar; // in scope 0 at $DIR/invalid_constant.rs:+6:34: +6:63
let mut _4: E; // in scope 0 at $DIR/invalid_constant.rs:+13:25: +13:59
let mut _5: main::InvalidTag; // in scope 0 at $DIR/invalid_constant.rs:+13:34: +13:55
let mut _7: Empty; // in scope 0 at $DIR/invalid_constant.rs:+20:35: +20:73
let mut _8: main::NoVariants; // in scope 0 at $DIR/invalid_constant.rs:+20:44: +20:65
scope 1 {
debug _invalid_char => _1; // in scope 1 at $DIR/invalid_constant.rs:+6:9: +6:22
let _3: [E; 1]; // in scope 1 at $DIR/invalid_constant.rs:+13:9: +13:21
scope 3 {
debug _invalid_tag => _3; // in scope 3 at $DIR/invalid_constant.rs:+13:9: +13:21
let _6: [Empty; 1]; // in scope 3 at $DIR/invalid_constant.rs:+20:9: +20:31
scope 5 {
- debug _enum_without_variants => _6; // in scope 5 at $DIR/invalid_constant.rs:+20:9: +20:31
+ debug _enum_without_variants => const [ZeroSized: Empty]; // in scope 5 at $DIR/invalid_constant.rs:+20:9: +20:31
let _9: main::Str<"<22><><EFBFBD>">; // in scope 5 at $DIR/invalid_constant.rs:+24:9: +24:22
scope 7 {
- debug _non_utf8_str => _9; // in scope 7 at $DIR/invalid_constant.rs:+24:9: +24:22
+ debug _non_utf8_str => const Str::<"<22><><EFBFBD>">; // in scope 7 at $DIR/invalid_constant.rs:+24:9: +24:22
}
}
scope 6 {
}
}
scope 4 {
}
}
scope 2 {
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/invalid_constant.rs:+6:9: +6:22
StorageLive(_2); // scope 2 at $DIR/invalid_constant.rs:+6:34: +6:63
_2 = InvalidChar { int: const 1114113_u32 }; // scope 2 at $DIR/invalid_constant.rs:+6:34: +6:63
_1 = (_2.1: char); // scope 2 at $DIR/invalid_constant.rs:+6:34: +6:67
StorageDead(_2); // scope 0 at $DIR/invalid_constant.rs:+6:69: +6:70
StorageLive(_3); // scope 1 at $DIR/invalid_constant.rs:+13:9: +13:21
StorageLive(_4); // scope 1 at $DIR/invalid_constant.rs:+13:25: +13:59
StorageLive(_5); // scope 4 at $DIR/invalid_constant.rs:+13:34: +13:55
_5 = InvalidTag { int: const 4_u32 }; // scope 4 at $DIR/invalid_constant.rs:+13:34: +13:55
_4 = (_5.1: E); // scope 4 at $DIR/invalid_constant.rs:+13:34: +13:57
_3 = [move _4]; // scope 1 at $DIR/invalid_constant.rs:+13:24: +13:60
StorageDead(_4); // scope 1 at $DIR/invalid_constant.rs:+13:59: +13:60
StorageDead(_5); // scope 1 at $DIR/invalid_constant.rs:+13:60: +13:61
StorageLive(_6); // scope 3 at $DIR/invalid_constant.rs:+20:9: +20:31
StorageLive(_7); // scope 3 at $DIR/invalid_constant.rs:+20:35: +20:73
StorageLive(_8); // scope 6 at $DIR/invalid_constant.rs:+20:44: +20:65
_8 = NoVariants { int: const 0_u32 }; // scope 6 at $DIR/invalid_constant.rs:+20:44: +20:65
- _7 = (_8.1: Empty); // scope 6 at $DIR/invalid_constant.rs:+20:44: +20:71
- _6 = [move _7]; // scope 3 at $DIR/invalid_constant.rs:+20:34: +20:74
+ nop; // scope 6 at $DIR/invalid_constant.rs:+20:44: +20:71
+ nop; // scope 3 at $DIR/invalid_constant.rs:+20:34: +20:74
StorageDead(_7); // scope 3 at $DIR/invalid_constant.rs:+20:73: +20:74
StorageDead(_8); // scope 3 at $DIR/invalid_constant.rs:+20:74: +20:75
StorageLive(_9); // scope 5 at $DIR/invalid_constant.rs:+24:9: +24:22
- _0 = const (); // scope 0 at $DIR/invalid_constant.rs:+0:11: +27:2
+ nop; // scope 0 at $DIR/invalid_constant.rs:+0:11: +27:2
StorageDead(_9); // scope 5 at $DIR/invalid_constant.rs:+27:1: +27:2
StorageDead(_6); // scope 3 at $DIR/invalid_constant.rs:+27:1: +27:2
StorageDead(_3); // scope 1 at $DIR/invalid_constant.rs:+27:1: +27:2
StorageDead(_1); // scope 0 at $DIR/invalid_constant.rs:+27:1: +27:2
return; // scope 0 at $DIR/invalid_constant.rs:+27:2: +27:2
}
}

1
tests/mir-opt/const_prop/invalid_constant.rs
View File

@ -11,6 +11,7 @@ enum E { A, B, C }
#[derive(Copy, Clone)]
enum Empty {}
// EMIT_MIR invalid_constant.main.RemoveZsts.diff
// EMIT_MIR invalid_constant.main.ConstProp.diff
fn main() {
// An invalid char.

5
tests/mir-opt/const_prop/issue_66971.main.ConstProp.diff
View File

@ -5,14 +5,11 @@
let mut _0: (); // return place in scope 0 at $DIR/issue_66971.rs:+0:11: +0:11
let _1: (); // in scope 0 at $DIR/issue_66971.rs:+1:5: +1:23
let mut _2: ((), u8, u8); // in scope 0 at $DIR/issue_66971.rs:+1:12: +1:22
let mut _3: (); // in scope 0 at $DIR/issue_66971.rs:+1:13: +1:15
bb0: {
StorageLive(_1); // scope 0 at $DIR/issue_66971.rs:+1:5: +1:23
StorageLive(_2); // scope 0 at $DIR/issue_66971.rs:+1:12: +1:22
StorageLive(_3); // scope 0 at $DIR/issue_66971.rs:+1:13: +1:15
_2 = (move _3, const 0_u8, const 0_u8); // scope 0 at $DIR/issue_66971.rs:+1:12: +1:22
StorageDead(_3); // scope 0 at $DIR/issue_66971.rs:+1:21: +1:22
_2 = (const (), const 0_u8, const 0_u8); // scope 0 at $DIR/issue_66971.rs:+1:12: +1:22
_1 = encode(move _2) -> bb1; // scope 0 at $DIR/issue_66971.rs:+1:5: +1:23
// mir::Constant
// + span: $DIR/issue_66971.rs:17:5: 17:11

2
tests/mir-opt/inline/asm_unwind.main.Inline.diff
View File

@ -7,7 +7,7 @@
+ scope 1 (inlined foo) { // at $DIR/asm_unwind.rs:21:5: 21:10
+ let _2: D; // in scope 1 at $DIR/asm_unwind.rs:15:9: 15:11
+ scope 2 {
+ debug _d => _2; // in scope 2 at $DIR/asm_unwind.rs:15:9: 15:11
+ debug _d => const D; // in scope 2 at $DIR/asm_unwind.rs:15:9: 15:11
+ scope 3 {
+ }
+ }

5
tests/mir-opt/inline/cycle.g.Inline.diff
View File

@ -5,11 +5,11 @@
let mut _0: (); // return place in scope 0 at $DIR/cycle.rs:+0:8: +0:8
let _1: (); // in scope 0 at $DIR/cycle.rs:+1:5: +1:12
+ let mut _2: fn() {main}; // in scope 0 at $DIR/cycle.rs:+1:5: +1:12
+ let mut _5: (); // in scope 0 at $DIR/cycle.rs:6:5: 6:8
+ scope 1 (inlined f::<fn() {main}>) { // at $DIR/cycle.rs:12:5: 12:12
+ debug g => _2; // in scope 1 at $DIR/cycle.rs:5:6: 5:7
+ let _3: (); // in scope 1 at $DIR/cycle.rs:6:5: 6:8
+ let mut _4: &fn() {main}; // in scope 1 at $DIR/cycle.rs:6:5: 6:6
+ let mut _5: (); // in scope 1 at $DIR/cycle.rs:6:5: 6:8
+ scope 2 (inlined <fn() {main} as Fn<()>>::call - shim(fn() {main})) { // at $DIR/cycle.rs:6:5: 6:8
+ }
+ }
@ -29,6 +29,7 @@
+ StorageLive(_4); // scope 1 at $DIR/cycle.rs:6:5: 6:6
+ _4 = &_2; // scope 1 at $DIR/cycle.rs:6:5: 6:6
+ StorageLive(_5); // scope 1 at $DIR/cycle.rs:6:5: 6:8
+ _5 = const (); // scope 1 at $DIR/cycle.rs:6:5: 6:8
+ _3 = move (*_4)() -> [return: bb4, unwind: bb2]; // scope 2 at $SRC_DIR/core/src/ops/function.rs:LL:COL
}
@ -48,7 +49,7 @@
+ }
+
+ bb4: {
+ StorageDead(_5); // scope 1 at $DIR/cycle.rs:6:7: 6:8
+ StorageDead(_5); // scope 1 at $DIR/cycle.rs:6:5: 6:8
+ StorageDead(_4); // scope 1 at $DIR/cycle.rs:6:7: 6:8
+ StorageDead(_3); // scope 1 at $DIR/cycle.rs:6:8: 6:9
+ drop(_2) -> bb1; // scope 1 at $DIR/cycle.rs:7:1: 7:2

5
tests/mir-opt/inline/cycle.main.Inline.diff
View File

@ -5,11 +5,11 @@
let mut _0: (); // return place in scope 0 at $DIR/cycle.rs:+0:11: +0:11
let _1: (); // in scope 0 at $DIR/cycle.rs:+1:5: +1:9
+ let mut _2: fn() {g}; // in scope 0 at $DIR/cycle.rs:+1:5: +1:9
+ let mut _5: (); // in scope 0 at $DIR/cycle.rs:6:5: 6:8
+ scope 1 (inlined f::<fn() {g}>) { // at $DIR/cycle.rs:17:5: 17:9
+ debug g => _2; // in scope 1 at $DIR/cycle.rs:5:6: 5:7
+ let _3: (); // in scope 1 at $DIR/cycle.rs:6:5: 6:8
+ let mut _4: &fn() {g}; // in scope 1 at $DIR/cycle.rs:6:5: 6:6
+ let mut _5: (); // in scope 1 at $DIR/cycle.rs:6:5: 6:8
+ scope 2 (inlined <fn() {g} as Fn<()>>::call - shim(fn() {g})) { // at $DIR/cycle.rs:6:5: 6:8
+ }
+ }
@ -29,6 +29,7 @@
+ StorageLive(_4); // scope 1 at $DIR/cycle.rs:6:5: 6:6
+ _4 = &_2; // scope 1 at $DIR/cycle.rs:6:5: 6:6
+ StorageLive(_5); // scope 1 at $DIR/cycle.rs:6:5: 6:8
+ _5 = const (); // scope 1 at $DIR/cycle.rs:6:5: 6:8
+ _3 = move (*_4)() -> [return: bb4, unwind: bb2]; // scope 2 at $SRC_DIR/core/src/ops/function.rs:LL:COL
}
@ -48,7 +49,7 @@
+ }
+
+ bb4: {
+ StorageDead(_5); // scope 1 at $DIR/cycle.rs:6:7: 6:8
+ StorageDead(_5); // scope 1 at $DIR/cycle.rs:6:5: 6:8
+ StorageDead(_4); // scope 1 at $DIR/cycle.rs:6:7: 6:8
+ StorageDead(_3); // scope 1 at $DIR/cycle.rs:6:8: 6:9
+ drop(_2) -> bb1; // scope 1 at $DIR/cycle.rs:7:1: 7:2

5
tests/mir-opt/inline/inline_cycle.two.Inline.diff
View File

@ -5,10 +5,10 @@
let mut _0: (); // return place in scope 0 at $DIR/inline_cycle.rs:+0:10: +0:10
let _1: (); // in scope 0 at $DIR/inline_cycle.rs:+1:5: +1:12
+ let mut _2: fn() {f}; // in scope 0 at $DIR/inline_cycle.rs:+1:5: +1:12
+ let mut _4: (); // in scope 0 at $DIR/inline_cycle.rs:54:5: 54:8
+ scope 1 (inlined call::<fn() {f}>) { // at $DIR/inline_cycle.rs:49:5: 49:12
+ debug f => _2; // in scope 1 at $DIR/inline_cycle.rs:53:22: 53:23
+ let _3: (); // in scope 1 at $DIR/inline_cycle.rs:54:5: 54:8
+ let mut _4: (); // in scope 1 at $DIR/inline_cycle.rs:54:5: 54:8
+ scope 2 (inlined <fn() {f} as FnOnce<()>>::call_once - shim(fn() {f})) { // at $DIR/inline_cycle.rs:54:5: 54:8
+ }
+ }
@ -26,11 +26,12 @@
// + literal: Const { ty: fn() {f}, val: Value(<ZST>) }
+ StorageLive(_3); // scope 1 at $DIR/inline_cycle.rs:54:5: 54:8
+ StorageLive(_4); // scope 1 at $DIR/inline_cycle.rs:54:5: 54:8
+ _4 = const (); // scope 1 at $DIR/inline_cycle.rs:54:5: 54:8
+ _3 = move _2() -> bb1; // scope 2 at $SRC_DIR/core/src/ops/function.rs:LL:COL
}
bb1: {
+ StorageDead(_4); // scope 1 at $DIR/inline_cycle.rs:54:7: 54:8
+ StorageDead(_4); // scope 1 at $DIR/inline_cycle.rs:54:5: 54:8
+ StorageDead(_3); // scope 1 at $DIR/inline_cycle.rs:54:8: 54:9
+ StorageDead(_2); // scope 0 at $DIR/inline_cycle.rs:+1:5: +1:12
StorageDead(_1); // scope 0 at $DIR/inline_cycle.rs:+1:12: +1:13

36
tests/mir-opt/inline/inline_diverging.h.Inline.diff
View File

@ -5,19 +5,18 @@
let mut _0: (); // return place in scope 0 at $DIR/inline_diverging.rs:+0:12: +0:12
let _1: (!, !); // in scope 0 at $DIR/inline_diverging.rs:+1:5: +1:22
+ let mut _2: fn() -> ! {sleep}; // in scope 0 at $DIR/inline_diverging.rs:+1:5: +1:22
+ let mut _8: (); // in scope 0 at $DIR/inline_diverging.rs:27:13: 27:16
+ scope 1 (inlined call_twice::<!, fn() -> ! {sleep}>) { // at $DIR/inline_diverging.rs:22:5: 22:22
+ debug f => _2; // in scope 1 at $DIR/inline_diverging.rs:26:36: 26:37
+ let _3: !; // in scope 1 at $DIR/inline_diverging.rs:27:9: 27:10
+ let mut _4: &fn() -> ! {sleep}; // in scope 1 at $DIR/inline_diverging.rs:27:13: 27:14
+ let mut _5: (); // in scope 1 at $DIR/inline_diverging.rs:27:13: 27:16
+ let mut _6: &fn() -> ! {sleep}; // in scope 1 at $DIR/inline_diverging.rs:28:13: 28:14
+ let mut _7: (); // in scope 1 at $DIR/inline_diverging.rs:28:13: 28:16
+ let mut _8: !; // in scope 1 at $DIR/inline_diverging.rs:29:6: 29:7
+ let mut _9: !; // in scope 1 at $DIR/inline_diverging.rs:29:9: 29:10
+ let mut _5: &fn() -> ! {sleep}; // in scope 1 at $DIR/inline_diverging.rs:28:13: 28:14
+ let mut _6: !; // in scope 1 at $DIR/inline_diverging.rs:29:6: 29:7
+ let mut _7: !; // in scope 1 at $DIR/inline_diverging.rs:29:9: 29:10
+ scope 2 {
+ debug a => _3; // in scope 2 at $DIR/inline_diverging.rs:27:9: 27:10
+ scope 3 {
+ debug b => _9; // in scope 3 at $DIR/inline_diverging.rs:28:9: 28:10
+ debug b => _7; // in scope 3 at $DIR/inline_diverging.rs:28:9: 28:10
+ }
+ }
+ scope 4 (inlined <fn() -> ! {sleep} as Fn<()>>::call - shim(fn() -> ! {sleep})) { // at $DIR/inline_diverging.rs:27:13: 27:16
@ -35,21 +34,21 @@
- // mir::Constant
// + span: $DIR/inline_diverging.rs:22:16: 22:21
// + literal: Const { ty: fn() -> ! {sleep}, val: Value(<ZST>) }
+ StorageLive(_9); // scope 0 at $DIR/inline_diverging.rs:+1:5: +1:22
+ StorageLive(_7); // scope 0 at $DIR/inline_diverging.rs:+1:5: +1:22
+ StorageLive(_3); // scope 1 at $DIR/inline_diverging.rs:27:9: 27:10
+ StorageLive(_4); // scope 1 at $DIR/inline_diverging.rs:27:13: 27:14
+ _4 = &_2; // scope 1 at $DIR/inline_diverging.rs:27:13: 27:14
+ StorageLive(_5); // scope 1 at $DIR/inline_diverging.rs:27:13: 27:16
+ StorageLive(_8); // scope 1 at $DIR/inline_diverging.rs:27:13: 27:16
+ _8 = const (); // scope 1 at $DIR/inline_diverging.rs:27:13: 27:16
+ _3 = move (*_4)() -> [return: bb6, unwind: bb4]; // scope 4 at $SRC_DIR/core/src/ops/function.rs:LL:COL
+ }
+
+ bb1: {
+ StorageDead(_7); // scope 2 at $DIR/inline_diverging.rs:28:15: 28:16
+ StorageDead(_6); // scope 2 at $DIR/inline_diverging.rs:28:15: 28:16
+ StorageLive(_8); // scope 3 at $DIR/inline_diverging.rs:29:6: 29:7
+ _8 = move _3; // scope 3 at $DIR/inline_diverging.rs:29:6: 29:7
+ _1 = (move _8, move _9); // scope 3 at $DIR/inline_diverging.rs:29:5: 29:11
+ StorageDead(_8); // scope 3 at $DIR/inline_diverging.rs:29:10: 29:11
+ StorageDead(_5); // scope 2 at $DIR/inline_diverging.rs:28:15: 28:16
+ StorageLive(_6); // scope 3 at $DIR/inline_diverging.rs:29:6: 29:7
+ _6 = move _3; // scope 3 at $DIR/inline_diverging.rs:29:6: 29:7
+ _1 = (move _6, move _7); // scope 3 at $DIR/inline_diverging.rs:29:5: 29:11
+ StorageDead(_6); // scope 3 at $DIR/inline_diverging.rs:29:10: 29:11
+ StorageDead(_3); // scope 1 at $DIR/inline_diverging.rs:30:1: 30:2
+ drop(_2) -> bb2; // scope 1 at $DIR/inline_diverging.rs:30:1: 30:2
+ }
@ -71,12 +70,11 @@
+ }
+
+ bb6: {
+ StorageDead(_5); // scope 1 at $DIR/inline_diverging.rs:27:15: 27:16
+ StorageDead(_8); // scope 1 at $DIR/inline_diverging.rs:27:13: 27:16
+ StorageDead(_4); // scope 1 at $DIR/inline_diverging.rs:27:15: 27:16
+ StorageLive(_6); // scope 2 at $DIR/inline_diverging.rs:28:13: 28:14
+ _6 = &_2; // scope 2 at $DIR/inline_diverging.rs:28:13: 28:14
+ StorageLive(_7); // scope 2 at $DIR/inline_diverging.rs:28:13: 28:16
+ _9 = <fn() -> ! {sleep} as Fn<()>>::call(move _6, move _7) -> [return: bb1, unwind: bb3]; // scope 2 at $DIR/inline_diverging.rs:28:13: 28:16
+ StorageLive(_5); // scope 2 at $DIR/inline_diverging.rs:28:13: 28:14
+ _5 = &_2; // scope 2 at $DIR/inline_diverging.rs:28:13: 28:14
+ _7 = <fn() -> ! {sleep} as Fn<()>>::call(move _5, const ()) -> [return: bb1, unwind: bb3]; // scope 2 at $DIR/inline_diverging.rs:28:13: 28:16
+ // mir::Constant
+ // + span: $DIR/inline_diverging.rs:28:13: 28:14
+ // + literal: Const { ty: for<'a> extern "rust-call" fn(&'a fn() -> ! {sleep}, ()) -> <fn() -> ! {sleep} as FnOnce<()>>::Output {<fn() -> ! {sleep} as Fn<()>>::call}, val: Value(<ZST>) }

7
tests/mir-opt/inline/issue_76997_inline_scopes_parenting.main.Inline.after.mir
View File

@ -10,10 +10,9 @@ fn main() -> () {
scope 1 {
debug f => _1; // in scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+1:9: +1:10
scope 2 (inlined main::{closure#0}) { // at $DIR/issue_76997_inline_scopes_parenting.rs:6:5: 6:10
debug x => _5; // in scope 2 at $DIR/issue_76997_inline_scopes_parenting.rs:+1:14: +1:15
let _6: (); // in scope 2 at $DIR/issue_76997_inline_scopes_parenting.rs:+1:23: +1:24
debug x => const (); // in scope 2 at $DIR/issue_76997_inline_scopes_parenting.rs:+1:14: +1:15
scope 3 {
debug y => _6; // in scope 3 at $DIR/issue_76997_inline_scopes_parenting.rs:+1:23: +1:24
debug y => const (); // in scope 3 at $DIR/issue_76997_inline_scopes_parenting.rs:+1:23: +1:24
}
}
}
@ -36,8 +35,6 @@ fn main() -> () {
_3 = (move _4,); // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:5: +2:10
StorageLive(_5); // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:5: +2:10
_5 = move (_3.0: ()); // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:5: +2:10
StorageLive(_6); // scope 2 at $DIR/issue_76997_inline_scopes_parenting.rs:+1:23: +1:24
StorageDead(_6); // scope 2 at $DIR/issue_76997_inline_scopes_parenting.rs:+1:32: +1:33
StorageDead(_5); // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:5: +2:10
StorageDead(_4); // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:9: +2:10
StorageDead(_3); // scope 1 at $DIR/issue_76997_inline_scopes_parenting.rs:+2:9: +2:10

13
tests/mir-opt/lower_intrinsics_e2e.f_unit.PreCodegen.after.mir
View File

@ -2,26 +2,23 @@
fn f_unit() -> () {
let mut _0: (); // return place in scope 0 at $DIR/lower_intrinsics_e2e.rs:+0:17: +0:17
let mut _1: (); // in scope 0 at $DIR/lower_intrinsics_e2e.rs:+1:16: +1:18
scope 1 (inlined f_dispatch::<()>) { // at $DIR/lower_intrinsics_e2e.rs:9:5: 9:19
debug t => _1; // in scope 1 at $DIR/lower_intrinsics_e2e.rs:19:22: 19:23
let _2: (); // in scope 1 at $DIR/lower_intrinsics_e2e.rs:21:9: 21:17
debug t => const (); // in scope 1 at $DIR/lower_intrinsics_e2e.rs:19:22: 19:23
let _1: (); // in scope 1 at $DIR/lower_intrinsics_e2e.rs:21:9: 21:17
scope 2 (inlined std::mem::size_of::<()>) { // at $DIR/lower_intrinsics_e2e.rs:20:8: 20:32
}
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/lower_intrinsics_e2e.rs:+1:16: +1:18
StorageLive(_2); // scope 1 at $DIR/lower_intrinsics_e2e.rs:21:9: 21:17
_2 = f_zst::<()>(move _1) -> bb1; // scope 1 at $DIR/lower_intrinsics_e2e.rs:21:9: 21:17
StorageLive(_1); // scope 1 at $DIR/lower_intrinsics_e2e.rs:21:9: 21:17
_1 = f_zst::<()>(const ()) -> bb1; // scope 1 at $DIR/lower_intrinsics_e2e.rs:21:9: 21:17
// mir::Constant
// + span: $DIR/lower_intrinsics_e2e.rs:21:9: 21:14
// + literal: Const { ty: fn(()) {f_zst::<()>}, val: Value(<ZST>) }
}
bb1: {
StorageDead(_2); // scope 1 at $DIR/lower_intrinsics_e2e.rs:21:17: 21:18
StorageDead(_1); // scope 0 at $DIR/lower_intrinsics_e2e.rs:+1:18: +1:19
StorageDead(_1); // scope 1 at $DIR/lower_intrinsics_e2e.rs:21:17: 21:18
return; // scope 0 at $DIR/lower_intrinsics_e2e.rs:+2:2: +2:2
}
}

5
tests/mir-opt/remove_zsts.get_union.PreCodegen.after.mir
View File

@ -2,12 +2,9 @@
fn get_union() -> Foo {
let mut _0: Foo; // return place in scope 0 at $DIR/remove_zsts.rs:+0:19: +0:22
let mut _1: (); // in scope 0 at $DIR/remove_zsts.rs:+1:14: +1:16
bb0: {
StorageLive(_1); // scope 0 at $DIR/remove_zsts.rs:+1:14: +1:16
_0 = Foo { x: move _1 }; // scope 0 at $DIR/remove_zsts.rs:+1:5: +1:18
StorageDead(_1); // scope 0 at $DIR/remove_zsts.rs:+1:17: +1:18
_0 = Foo { x: const () }; // scope 0 at $DIR/remove_zsts.rs:+1:5: +1:18
return; // scope 0 at $DIR/remove_zsts.rs:+2:2: +2:2
}
}

3
tests/mir-opt/remove_zsts.get_union.RemoveZsts.diff
View File

@ -8,8 +8,9 @@
bb0: {
StorageLive(_1); // scope 0 at $DIR/remove_zsts.rs:+1:14: +1:16
- _1 = (); // scope 0 at $DIR/remove_zsts.rs:+1:14: +1:16
- _0 = Foo { x: move _1 }; // scope 0 at $DIR/remove_zsts.rs:+1:5: +1:18
+ nop; // scope 0 at $DIR/remove_zsts.rs:+1:14: +1:16
_0 = Foo { x: move _1 }; // scope 0 at $DIR/remove_zsts.rs:+1:5: +1:18
+ _0 = Foo { x: const () }; // scope 0 at $DIR/remove_zsts.rs:+1:5: +1:18
StorageDead(_1); // scope 0 at $DIR/remove_zsts.rs:+1:17: +1:18
return; // scope 0 at $DIR/remove_zsts.rs:+2:2: +2:2
}

37
tests/mir-opt/simple_option_map_e2e.ezmap.PreCodegen.after.mir
View File

@ -3,30 +3,28 @@
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 $DIR/simple_option_map_e2e.rs:+1:12: +1:21
scope 1 (inlined map::<i32, i32, [closure@$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 $DIR/simple_option_map_e2e.rs:7:25: 7:29
debug f => const ZeroSized: [closure@$DIR/simple_option_map_e2e.rs:14:12: 14:15]; // in scope 1 at $DIR/simple_option_map_e2e.rs:2:33: 2:34
let mut _2: isize; // in scope 1 at $DIR/simple_option_map_e2e.rs:7:9: 7:16
let _3: i32; // in scope 1 at $DIR/simple_option_map_e2e.rs:7:14: 7:15
let mut _4: 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
debug x => _3; // 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 => _4; // in scope 3 at $DIR/simple_option_map_e2e.rs:+1:13: +1:14
debug n => _3; // 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
_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
_2 = discriminant(_1); // scope 1 at $DIR/simple_option_map_e2e.rs:6:11: 6:14
switchInt(move _2) -> [0: bb1, 1: bb3, otherwise: bb2]; // scope 1 at $DIR/simple_option_map_e2e.rs:6:5: 6:14
}
bb1: {
_0 = Option::<i32>::None; // scope 1 at $DIR/simple_option_map_e2e.rs:8:17: 8:21
goto -> bb4; // scope 1 at $DIR/simple_option_map_e2e.rs:8:17: 8:21
return; // scope 1 at $DIR/simple_option_map_e2e.rs:8:17: 8:21
}
bb2: {
@ -34,16 +32,11 @@ fn ezmap(_1: Option<i32>) -> Option<i32> {
}
bb3: {
_4 = ((_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
_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(_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
_3 = ((_1 as Some).0: i32); // scope 1 at $DIR/simple_option_map_e2e.rs:7:14: 7:15
StorageLive(_4); // scope 2 at $DIR/simple_option_map_e2e.rs:7:25: 7:29
_4 = Add(_3, const 1_i32); // scope 3 at $DIR/simple_option_map_e2e.rs:+1:16: +1:21
_0 = Option::<i32>::Some(move _4); // scope 2 at $DIR/simple_option_map_e2e.rs:7:20: 7:30
StorageDead(_4); // scope 2 at $DIR/simple_option_map_e2e.rs:7:29: 7:30
return; // scope 1 at $DIR/simple_option_map_e2e.rs:10:1: 10:2
}
}