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Leave FIXME for wasm layout difference.

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There is a distinction between running this on wasm and i686, even though they should be
identical. This technically is not _incorrect_, it's just an unexpected difference, which is
worth investigating, but not for correctness.
This commit is contained in:
kadmin 2022-06-24 08:48:07 +00:00
parent 610e1a1e05
commit 15f4eec7a9
11 changed files with 297 additions and 315 deletions
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42
compiler/rustc_mir_transform/src/large_enums.rs
View File

@ -1,6 +1,6 @@
use crate::rustc_middle::ty::util::IntTypeExt;
use crate::MirPass;
use rustc_data_structures::stable_map::FxHashMap;
use rustc_data_structures::fx::FxHashMap;
use rustc_middle::mir::interpret::AllocId;
use rustc_middle::mir::*;
use rustc_middle::ty::{self, AdtDef, Const, ParamEnv, Ty, TyCtxt};
@ -19,6 +19,10 @@ use rustc_target::abi::{HasDataLayout, Size, TagEncoding, Variants};
/// Instead of emitting moves of the large variant,
/// Perform a memcpy instead.
/// Based off of [this HackMD](https://hackmd.io/@ft4bxUsFT5CEUBmRKYHr7w/rJM8BBPzD).
///
/// In summary, what this does is at runtime determine which enum variant is active,
/// and instead of copying all the bytes of the largest possible variant,
/// copy only the bytes for the currently active variant.
pub struct EnumSizeOpt {
pub(crate) discrepancy: u64,
}
@ -26,7 +30,10 @@ pub struct EnumSizeOpt {
impl<'tcx> MirPass<'tcx> for EnumSizeOpt {
fn run_pass(&self, tcx: TyCtxt<'tcx>, body: &mut Body<'tcx>) {
let sess = tcx.sess;
if (!sess.opts.debugging_opts.unsound_mir_opts) || sess.mir_opt_level() < 3 {
// FIXME(julianknodt): one thing noticed while testing this mir-opt is that there is a
// different layout of large enums on wasm. It's not clear what is causing this layout
// difference, as it should be identical to i686 (32 bit).
if (!sess.opts.unstable_opts.unsound_mir_opts) || sess.mir_opt_level() < 3 {
return;
}
self.optim(tcx, body);
@ -56,8 +63,8 @@ impl EnumSizeOpt {
Variants::Multiple { variants, .. } if variants.len() <= 1 => return None,
Variants::Multiple { variants, .. } => variants,
};
let min = variants.iter().map(|v| v.size()).min().unwrap();
let max = variants.iter().map(|v| v.size()).max().unwrap();
let min = variants.iter().map(|v| v.size).min().unwrap();
let max = variants.iter().map(|v| v.size).max().unwrap();
if max.bytes() - min.bytes() < self.discrepancy {
return None;
}
@ -92,7 +99,7 @@ impl EnumSizeOpt {
for (var_idx, layout) in variants.iter_enumerated() {
let curr_idx =
target_bytes * adt_def.discriminant_for_variant(tcx, var_idx).val as usize;
let sz = layout.size();
let sz = layout.size;
match ptr_sized_int {
rustc_target::abi::Integer::I32 => {
encode_store!(curr_idx, data_layout.endian, sz.bytes() as u32);
@ -115,8 +122,11 @@ impl EnumSizeOpt {
let mut alloc_cache = FxHashMap::default();
let body_did = body.source.def_id();
let param_env = tcx.param_env(body_did);
let (bbs, local_decls) = body.basic_blocks_and_local_decls_mut();
for bb in bbs {
let blocks = body.basic_blocks.as_mut();
let local_decls = &mut body.local_decls;
for bb in blocks {
bb.expand_statements(|st| {
if let StatementKind::Assign(box (
lhs,
@ -175,7 +185,7 @@ impl EnumSizeOpt {
kind: StatementKind::Assign(box (
discr_cast_place,
Rvalue::Cast(
CastKind::Misc,
CastKind::IntToInt,
Operand::Copy(discr_place),
tcx.types.usize,
),
@ -217,7 +227,7 @@ impl EnumSizeOpt {
source_info,
kind: StatementKind::Assign(box (
dst_cast_place,
Rvalue::Cast(CastKind::Misc, Operand::Copy(dst), dst_cast_ty),
Rvalue::Cast(CastKind::PtrToPtr, Operand::Copy(dst), dst_cast_ty),
)),
};
@ -240,17 +250,19 @@ impl EnumSizeOpt {
source_info,
kind: StatementKind::Assign(box (
src_cast_place,
Rvalue::Cast(CastKind::Misc, Operand::Copy(src), src_cast_ty),
Rvalue::Cast(CastKind::PtrToPtr, Operand::Copy(src), src_cast_ty),
)),
};
let copy_bytes = Statement {
source_info,
kind: StatementKind::CopyNonOverlapping(box CopyNonOverlapping {
src: Operand::Copy(src_cast_place),
dst: Operand::Copy(dst_cast_place),
count: Operand::Copy(size_place),
}),
kind: StatementKind::Intrinsic(
box NonDivergingIntrinsic::CopyNonOverlapping(CopyNonOverlapping {
src: Operand::Copy(src_cast_place),
dst: Operand::Copy(dst_cast_place),
count: Operand::Copy(size_place),
}),
),
};
let store_dead = Statement {

2
compiler/rustc_mir_transform/src/lib.rs
View File

@ -1,8 +1,8 @@
#![allow(rustc::potential_query_instability)]
#![feature(box_patterns)]
#![feature(drain_filter)]
#![feature(box_syntax)]
#![feature(let_chains)]
#![feature(let_else)]
#![feature(map_try_insert)]
#![feature(min_specialization)]
#![feature(never_type)]

84
tests/mir-opt/enum_opt.cand.EnumSizeOpt.32bit.diff
View File

@ -2,54 +2,50 @@
+ // MIR for `cand` after EnumSizeOpt
fn cand() -> () {
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:50:15: 50:15
let mut _1: Candidate; // in scope 0 at $DIR/enum_opt.rs:51:7: 51:12
let mut _2: Candidate; // in scope 0 at $DIR/enum_opt.rs:52:7: 52:34
let mut _3: [u64; 1024]; // in scope 0 at $DIR/enum_opt.rs:52:24: 52:33
+ let mut _4: [usize; 2]; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _5: isize; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _6: usize; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _7: usize; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _8: *mut Candidate; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _9: *mut u8; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _10: *const Candidate; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _11: *const u8; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:+0:15: +0:15
let mut _1: Candidate; // in scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
let mut _2: Candidate; // in scope 0 at $DIR/enum_opt.rs:+2:7: +2:34
let mut _3: [u64; 1024]; // in scope 0 at $DIR/enum_opt.rs:+2:24: +2:33
+ let mut _4: [usize; 2]; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _5: isize; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _6: usize; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _7: usize; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _8: *mut Candidate; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _9: *mut u8; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _10: *const Candidate; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _11: *const u8; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
scope 1 {
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:51:7: 51:12
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:+1:7: +1:12
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:51:7: 51:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:51:15: 51:34
((_1 as Small).0: u8) = const 1_u8; // scope 0 at $DIR/enum_opt.rs:51:15: 51:34
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:51:15: 51:34
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:52:7: 52:34
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:52:24: 52:33
_3 = [const 1_u64; 1024]; // scope 1 at $DIR/enum_opt.rs:52:24: 52:33
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:52:7: 52:34
((_2 as Large).0: [u64; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:52:7: 52:34
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:52:7: 52:34
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:52:33: 52:34
- _1 = move _2; // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ StorageLive(_4); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _4 = const [2_usize, 8196_usize]; // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _5 = discriminant(_2); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _6 = _5 as usize (Misc); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _7 = _4[_6]; // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _8 = &raw mut _1; // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _9 = _8 as *mut u8 (Misc); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _10 = &raw const _2; // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _11 = _10 as *const u8 (Misc); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ copy_nonoverlapping(src=_11, dst=_9, count=_7); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ StorageDead(_4); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:52:33: 52:34
_0 = const (); // scope 0 at $DIR/enum_opt.rs:50:15: 53:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:53:1: 53:2
return; // scope 0 at $DIR/enum_opt.rs:53:2: 53:2
}
bb1 (cleanup): {
resume; // scope 0 at $DIR/enum_opt.rs:50:1: 53:2
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:+1:15: +1:34
((_1 as Small).0: u8) = const 1_u8; // scope 0 at $DIR/enum_opt.rs:+1:15: +1:34
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:+1:15: +1:34
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:+2:24: +2:33
_3 = [const 1_u64; 1024]; // scope 1 at $DIR/enum_opt.rs:+2:24: +2:33
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
((_2 as Large).0: [u64; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:+2:33: +2:34
- _1 = move _2; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ StorageLive(_4); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _4 = const [2_usize, 8196_usize]; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _5 = discriminant(_2); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _6 = _5 as usize (IntToInt); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _7 = _4[_6]; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _8 = &raw mut _1; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _9 = _8 as *mut u8 (PtrToPtr); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _10 = &raw const _2; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _11 = _10 as *const u8 (PtrToPtr); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ copy_nonoverlapping(dst = _9, src = _11, count = _7); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ StorageDead(_4); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:+2:33: +2:34
_0 = const (); // scope 0 at $DIR/enum_opt.rs:+0:15: +3:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:+3:1: +3:2
return; // scope 0 at $DIR/enum_opt.rs:+3:2: +3:2
}
}

84
tests/mir-opt/enum_opt.cand.EnumSizeOpt.64bit.diff
View File

@ -2,54 +2,50 @@
+ // MIR for `cand` after EnumSizeOpt
fn cand() -> () {
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:50:15: 50:15
let mut _1: Candidate; // in scope 0 at $DIR/enum_opt.rs:51:7: 51:12
let mut _2: Candidate; // in scope 0 at $DIR/enum_opt.rs:52:7: 52:34
let mut _3: [u64; 1024]; // in scope 0 at $DIR/enum_opt.rs:52:24: 52:33
+ let mut _4: [usize; 2]; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _5: isize; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _6: usize; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _7: usize; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _8: *mut Candidate; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _9: *mut u8; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _10: *const Candidate; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
+ let mut _11: *const u8; // in scope 0 at $DIR/enum_opt.rs:52:3: 52:34
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:+0:15: +0:15
let mut _1: Candidate; // in scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
let mut _2: Candidate; // in scope 0 at $DIR/enum_opt.rs:+2:7: +2:34
let mut _3: [u64; 1024]; // in scope 0 at $DIR/enum_opt.rs:+2:24: +2:33
+ let mut _4: [usize; 2]; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _5: isize; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _6: usize; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _7: usize; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _8: *mut Candidate; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _9: *mut u8; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _10: *const Candidate; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
+ let mut _11: *const u8; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:34
scope 1 {
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:51:7: 51:12
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:+1:7: +1:12
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:51:7: 51:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:51:15: 51:34
((_1 as Small).0: u8) = const 1_u8; // scope 0 at $DIR/enum_opt.rs:51:15: 51:34
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:51:15: 51:34
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:52:7: 52:34
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:52:24: 52:33
_3 = [const 1_u64; 1024]; // scope 1 at $DIR/enum_opt.rs:52:24: 52:33
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:52:7: 52:34
((_2 as Large).0: [u64; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:52:7: 52:34
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:52:7: 52:34
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:52:33: 52:34
- _1 = move _2; // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ StorageLive(_4); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _4 = const [2_usize, 8200_usize]; // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _5 = discriminant(_2); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _6 = _5 as usize (Misc); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _7 = _4[_6]; // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _8 = &raw mut _1; // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _9 = _8 as *mut u8 (Misc); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _10 = &raw const _2; // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ _11 = _10 as *const u8 (Misc); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ copy_nonoverlapping(src=_11, dst=_9, count=_7); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
+ StorageDead(_4); // scope 1 at $DIR/enum_opt.rs:52:3: 52:34
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:52:33: 52:34
_0 = const (); // scope 0 at $DIR/enum_opt.rs:50:15: 53:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:53:1: 53:2
return; // scope 0 at $DIR/enum_opt.rs:53:2: 53:2
}
bb1 (cleanup): {
resume; // scope 0 at $DIR/enum_opt.rs:50:1: 53:2
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:+1:15: +1:34
((_1 as Small).0: u8) = const 1_u8; // scope 0 at $DIR/enum_opt.rs:+1:15: +1:34
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:+1:15: +1:34
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:+2:24: +2:33
_3 = [const 1_u64; 1024]; // scope 1 at $DIR/enum_opt.rs:+2:24: +2:33
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
((_2 as Large).0: [u64; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:+2:33: +2:34
- _1 = move _2; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ StorageLive(_4); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _4 = const [2_usize, 8200_usize]; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _5 = discriminant(_2); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _6 = _5 as usize (IntToInt); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _7 = _4[_6]; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _8 = &raw mut _1; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _9 = _8 as *mut u8 (PtrToPtr); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _10 = &raw const _2; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ _11 = _10 as *const u8 (PtrToPtr); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ copy_nonoverlapping(dst = _9, src = _11, count = _7); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
+ StorageDead(_4); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:+2:33: +2:34
_0 = const (); // scope 0 at $DIR/enum_opt.rs:+0:15: +3:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:+3:1: +3:2
return; // scope 0 at $DIR/enum_opt.rs:+3:2: +3:2
}
}

44
tests/mir-opt/enum_opt.invalid.EnumSizeOpt.32bit.diff
View File

@ -2,34 +2,30 @@
+ // MIR for `invalid` after EnumSizeOpt
fn invalid() -> () {
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:56:18: 56:18
let mut _1: InvalidIdxs; // in scope 0 at $DIR/enum_opt.rs:57:7: 57:12
let mut _2: InvalidIdxs; // in scope 0 at $DIR/enum_opt.rs:58:7: 58:36
let mut _3: [u64; 1024]; // in scope 0 at $DIR/enum_opt.rs:58:26: 58:35
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:+0:18: +0:18
let mut _1: InvalidIdxs; // in scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
let mut _2: InvalidIdxs; // in scope 0 at $DIR/enum_opt.rs:+2:7: +2:36
let mut _3: [u64; 1024]; // in scope 0 at $DIR/enum_opt.rs:+2:26: +2:35
scope 1 {
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:57:7: 57:12
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:+1:7: +1:12
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:57:7: 57:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:57:15: 57:29
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:57:15: 57:29
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:58:7: 58:36
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:58:26: 58:35
_3 = [const 0_u64; 1024]; // scope 1 at $DIR/enum_opt.rs:58:26: 58:35
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:58:7: 58:36
((_2 as Large).0: [u64; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:58:7: 58:36
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:58:7: 58:36
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:58:35: 58:36
_1 = move _2; // scope 1 at $DIR/enum_opt.rs:58:3: 58:36
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:58:35: 58:36
_0 = const (); // scope 0 at $DIR/enum_opt.rs:56:18: 59:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:59:1: 59:2
return; // scope 0 at $DIR/enum_opt.rs:59:2: 59:2
}
bb1 (cleanup): {
resume; // scope 0 at $DIR/enum_opt.rs:56:1: 59:2
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:+1:15: +1:29
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:+1:15: +1:29
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:36
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:+2:26: +2:35
_3 = [const 0_u64; 1024]; // scope 1 at $DIR/enum_opt.rs:+2:26: +2:35
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:36
((_2 as Large).0: [u64; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:36
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:36
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:+2:35: +2:36
_1 = move _2; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:36
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:+2:35: +2:36
_0 = const (); // scope 0 at $DIR/enum_opt.rs:+0:18: +3:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:+3:1: +3:2
return; // scope 0 at $DIR/enum_opt.rs:+3:2: +3:2
}
}

44
tests/mir-opt/enum_opt.invalid.EnumSizeOpt.64bit.diff
View File

@ -2,34 +2,30 @@
+ // MIR for `invalid` after EnumSizeOpt
fn invalid() -> () {
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:56:18: 56:18
let mut _1: InvalidIdxs; // in scope 0 at $DIR/enum_opt.rs:57:7: 57:12
let mut _2: InvalidIdxs; // in scope 0 at $DIR/enum_opt.rs:58:7: 58:36
let mut _3: [u64; 1024]; // in scope 0 at $DIR/enum_opt.rs:58:26: 58:35
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:+0:18: +0:18
let mut _1: InvalidIdxs; // in scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
let mut _2: InvalidIdxs; // in scope 0 at $DIR/enum_opt.rs:+2:7: +2:36
let mut _3: [u64; 1024]; // in scope 0 at $DIR/enum_opt.rs:+2:26: +2:35
scope 1 {
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:57:7: 57:12
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:+1:7: +1:12
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:57:7: 57:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:57:15: 57:29
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:57:15: 57:29
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:58:7: 58:36
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:58:26: 58:35
_3 = [const 0_u64; 1024]; // scope 1 at $DIR/enum_opt.rs:58:26: 58:35
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:58:7: 58:36
((_2 as Large).0: [u64; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:58:7: 58:36
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:58:7: 58:36
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:58:35: 58:36
_1 = move _2; // scope 1 at $DIR/enum_opt.rs:58:3: 58:36
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:58:35: 58:36
_0 = const (); // scope 0 at $DIR/enum_opt.rs:56:18: 59:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:59:1: 59:2
return; // scope 0 at $DIR/enum_opt.rs:59:2: 59:2
}
bb1 (cleanup): {
resume; // scope 0 at $DIR/enum_opt.rs:56:1: 59:2
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:+1:15: +1:29
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:+1:15: +1:29
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:36
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:+2:26: +2:35
_3 = [const 0_u64; 1024]; // scope 1 at $DIR/enum_opt.rs:+2:26: +2:35
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:36
((_2 as Large).0: [u64; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:36
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:36
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:+2:35: +2:36
_1 = move _2; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:36
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:+2:35: +2:36
_0 = const (); // scope 0 at $DIR/enum_opt.rs:+0:18: +3:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:+3:1: +3:2
return; // scope 0 at $DIR/enum_opt.rs:+3:2: +3:2
}
}

16
tests/mir-opt/enum_opt.rs
View File

@ -1,12 +1,14 @@
// EMIT_MIR_FOR_EACH_BIT_WIDTH
// compile-flags: -Zunsound-mir-opts -Zmir-opt-level=3
// ignore-wasm32-bare compiled with panic=abort by default
// ignore-wasm32
#![feature(arbitrary_enum_discriminant, repr128)]
// Tests that an enum with a variant with no data gets correctly transformed.
#[repr(C)]
pub enum NoData {
Large([u8; 8192]),
None,
Large([u64; 1024]),
}
// Tests that an enum with a variant with data that is a valid candidate gets transformed.
@ -26,7 +28,7 @@ pub enum InvalidIdxs {
// Tests that an enum with too high of a discriminant index (not in bounds of usize) does not
// get tformed.
#[repr(u128)]
pub enum Truncatable {
pub enum NotTrunctable {
A = 0,
B([u8; 1024]) = 1,
C([u8; 4096]) = 0x10000000000000001,
@ -43,7 +45,7 @@ pub enum RandOrderDiscr {
// EMIT_MIR enum_opt.unin.EnumSizeOpt.diff
pub fn unin() {
let mut a = NoData::None;
a = NoData::Large([1; 1024]);
a = NoData::Large([1; 8192]);
}
// EMIT_MIR enum_opt.cand.EnumSizeOpt.diff
@ -60,9 +62,9 @@ pub fn invalid() {
// EMIT_MIR enum_opt.trunc.EnumSizeOpt.diff
pub fn trunc() {
let mut a = Truncatable::A;
a = Truncatable::B([0; 1024]);
a = Truncatable::C([0; 4096]);
let mut a = NotTrunctable::A;
a = NotTrunctable::B([0; 1024]);
a = NotTrunctable::C([0; 4096]);
}
pub fn rand_order() {

66
tests/mir-opt/enum_opt.trunc.EnumSizeOpt.32bit.diff
View File

@ -2,45 +2,41 @@
+ // MIR for `trunc` after EnumSizeOpt
fn trunc() -> () {
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:62:16: 62:16
let mut _1: Truncatable; // in scope 0 at $DIR/enum_opt.rs:63:7: 63:12
let mut _2: Truncatable; // in scope 0 at $DIR/enum_opt.rs:64:7: 64:32
let mut _3: [u8; 1024]; // in scope 0 at $DIR/enum_opt.rs:64:22: 64:31
let mut _4: Truncatable; // in scope 0 at $DIR/enum_opt.rs:65:7: 65:32
let mut _5: [u8; 4096]; // in scope 0 at $DIR/enum_opt.rs:65:22: 65:31
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:+0:16: +0:16
let mut _1: NotTrunctable; // in scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
let mut _2: NotTrunctable; // in scope 0 at $DIR/enum_opt.rs:+2:7: +2:34
let mut _3: [u8; 1024]; // in scope 0 at $DIR/enum_opt.rs:+2:24: +2:33
let mut _4: NotTrunctable; // in scope 0 at $DIR/enum_opt.rs:+3:7: +3:34
let mut _5: [u8; 4096]; // in scope 0 at $DIR/enum_opt.rs:+3:24: +3:33
scope 1 {
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:63:7: 63:12
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:+1:7: +1:12
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:63:7: 63:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:63:15: 63:29
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:63:15: 63:29
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:64:7: 64:32
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:64:22: 64:31
_3 = [const 0_u8; 1024]; // scope 1 at $DIR/enum_opt.rs:64:22: 64:31
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:64:7: 64:32
((_2 as B).0: [u8; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:64:7: 64:32
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:64:7: 64:32
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:64:31: 64:32
_1 = move _2; // scope 1 at $DIR/enum_opt.rs:64:3: 64:32
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:64:31: 64:32
StorageLive(_4); // scope 1 at $DIR/enum_opt.rs:65:7: 65:32
StorageLive(_5); // scope 1 at $DIR/enum_opt.rs:65:22: 65:31
_5 = [const 0_u8; 4096]; // scope 1 at $DIR/enum_opt.rs:65:22: 65:31
Deinit(_4); // scope 1 at $DIR/enum_opt.rs:65:7: 65:32
((_4 as C).0: [u8; 4096]) = move _5; // scope 1 at $DIR/enum_opt.rs:65:7: 65:32
discriminant(_4) = 2; // scope 1 at $DIR/enum_opt.rs:65:7: 65:32
StorageDead(_5); // scope 1 at $DIR/enum_opt.rs:65:31: 65:32
_1 = move _4; // scope 1 at $DIR/enum_opt.rs:65:3: 65:32
StorageDead(_4); // scope 1 at $DIR/enum_opt.rs:65:31: 65:32
_0 = const (); // scope 0 at $DIR/enum_opt.rs:62:16: 66:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:66:1: 66:2
return; // scope 0 at $DIR/enum_opt.rs:66:2: 66:2
}
bb1 (cleanup): {
resume; // scope 0 at $DIR/enum_opt.rs:62:1: 66:2
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:+1:15: +1:31
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:+1:15: +1:31
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:+2:24: +2:33
_3 = [const 0_u8; 1024]; // scope 1 at $DIR/enum_opt.rs:+2:24: +2:33
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
((_2 as B).0: [u8; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:+2:33: +2:34
_1 = move _2; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:+2:33: +2:34
StorageLive(_4); // scope 1 at $DIR/enum_opt.rs:+3:7: +3:34
StorageLive(_5); // scope 1 at $DIR/enum_opt.rs:+3:24: +3:33
_5 = [const 0_u8; 4096]; // scope 1 at $DIR/enum_opt.rs:+3:24: +3:33
Deinit(_4); // scope 1 at $DIR/enum_opt.rs:+3:7: +3:34
((_4 as C).0: [u8; 4096]) = move _5; // scope 1 at $DIR/enum_opt.rs:+3:7: +3:34
discriminant(_4) = 2; // scope 1 at $DIR/enum_opt.rs:+3:7: +3:34
StorageDead(_5); // scope 1 at $DIR/enum_opt.rs:+3:33: +3:34
_1 = move _4; // scope 1 at $DIR/enum_opt.rs:+3:3: +3:34
StorageDead(_4); // scope 1 at $DIR/enum_opt.rs:+3:33: +3:34
_0 = const (); // scope 0 at $DIR/enum_opt.rs:+0:16: +4:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:+4:1: +4:2
return; // scope 0 at $DIR/enum_opt.rs:+4:2: +4:2
}
}

66
tests/mir-opt/enum_opt.trunc.EnumSizeOpt.64bit.diff
View File

@ -2,45 +2,41 @@
+ // MIR for `trunc` after EnumSizeOpt
fn trunc() -> () {
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:62:16: 62:16
let mut _1: Truncatable; // in scope 0 at $DIR/enum_opt.rs:63:7: 63:12
let mut _2: Truncatable; // in scope 0 at $DIR/enum_opt.rs:64:7: 64:32
let mut _3: [u8; 1024]; // in scope 0 at $DIR/enum_opt.rs:64:22: 64:31
let mut _4: Truncatable; // in scope 0 at $DIR/enum_opt.rs:65:7: 65:32
let mut _5: [u8; 4096]; // in scope 0 at $DIR/enum_opt.rs:65:22: 65:31
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:+0:16: +0:16
let mut _1: NotTrunctable; // in scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
let mut _2: NotTrunctable; // in scope 0 at $DIR/enum_opt.rs:+2:7: +2:34
let mut _3: [u8; 1024]; // in scope 0 at $DIR/enum_opt.rs:+2:24: +2:33
let mut _4: NotTrunctable; // in scope 0 at $DIR/enum_opt.rs:+3:7: +3:34
let mut _5: [u8; 4096]; // in scope 0 at $DIR/enum_opt.rs:+3:24: +3:33
scope 1 {
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:63:7: 63:12
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:+1:7: +1:12
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:63:7: 63:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:63:15: 63:29
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:63:15: 63:29
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:64:7: 64:32
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:64:22: 64:31
_3 = [const 0_u8; 1024]; // scope 1 at $DIR/enum_opt.rs:64:22: 64:31
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:64:7: 64:32
((_2 as B).0: [u8; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:64:7: 64:32
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:64:7: 64:32
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:64:31: 64:32
_1 = move _2; // scope 1 at $DIR/enum_opt.rs:64:3: 64:32
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:64:31: 64:32
StorageLive(_4); // scope 1 at $DIR/enum_opt.rs:65:7: 65:32
StorageLive(_5); // scope 1 at $DIR/enum_opt.rs:65:22: 65:31
_5 = [const 0_u8; 4096]; // scope 1 at $DIR/enum_opt.rs:65:22: 65:31
Deinit(_4); // scope 1 at $DIR/enum_opt.rs:65:7: 65:32
((_4 as C).0: [u8; 4096]) = move _5; // scope 1 at $DIR/enum_opt.rs:65:7: 65:32
discriminant(_4) = 2; // scope 1 at $DIR/enum_opt.rs:65:7: 65:32
StorageDead(_5); // scope 1 at $DIR/enum_opt.rs:65:31: 65:32
_1 = move _4; // scope 1 at $DIR/enum_opt.rs:65:3: 65:32
StorageDead(_4); // scope 1 at $DIR/enum_opt.rs:65:31: 65:32
_0 = const (); // scope 0 at $DIR/enum_opt.rs:62:16: 66:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:66:1: 66:2
return; // scope 0 at $DIR/enum_opt.rs:66:2: 66:2
}
bb1 (cleanup): {
resume; // scope 0 at $DIR/enum_opt.rs:62:1: 66:2
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:+1:15: +1:31
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:+1:15: +1:31
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:+2:24: +2:33
_3 = [const 0_u8; 1024]; // scope 1 at $DIR/enum_opt.rs:+2:24: +2:33
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
((_2 as B).0: [u8; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:34
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:+2:33: +2:34
_1 = move _2; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:34
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:+2:33: +2:34
StorageLive(_4); // scope 1 at $DIR/enum_opt.rs:+3:7: +3:34
StorageLive(_5); // scope 1 at $DIR/enum_opt.rs:+3:24: +3:33
_5 = [const 0_u8; 4096]; // scope 1 at $DIR/enum_opt.rs:+3:24: +3:33
Deinit(_4); // scope 1 at $DIR/enum_opt.rs:+3:7: +3:34
((_4 as C).0: [u8; 4096]) = move _5; // scope 1 at $DIR/enum_opt.rs:+3:7: +3:34
discriminant(_4) = 2; // scope 1 at $DIR/enum_opt.rs:+3:7: +3:34
StorageDead(_5); // scope 1 at $DIR/enum_opt.rs:+3:33: +3:34
_1 = move _4; // scope 1 at $DIR/enum_opt.rs:+3:3: +3:34
StorageDead(_4); // scope 1 at $DIR/enum_opt.rs:+3:33: +3:34
_0 = const (); // scope 0 at $DIR/enum_opt.rs:+0:16: +4:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:+4:1: +4:2
return; // scope 0 at $DIR/enum_opt.rs:+4:2: +4:2
}
}

82
tests/mir-opt/enum_opt.unin.EnumSizeOpt.32bit.diff
View File

@ -2,53 +2,49 @@
+ // MIR for `unin` after EnumSizeOpt
fn unin() -> () {
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:44:15: 44:15
let mut _1: NoData; // in scope 0 at $DIR/enum_opt.rs:45:7: 45:12
let mut _2: NoData; // in scope 0 at $DIR/enum_opt.rs:46:7: 46:31
let mut _3: [u64; 1024]; // in scope 0 at $DIR/enum_opt.rs:46:21: 46:30
+ let mut _4: [usize; 2]; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _5: isize; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _6: usize; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _7: usize; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _8: *mut NoData; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _9: *mut u8; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _10: *const NoData; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _11: *const u8; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:+0:15: +0:15
let mut _1: NoData; // in scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
let mut _2: NoData; // in scope 0 at $DIR/enum_opt.rs:+2:7: +2:31
let mut _3: [u8; 8192]; // in scope 0 at $DIR/enum_opt.rs:+2:21: +2:30
+ let mut _4: [usize; 2]; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _5: isize; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _6: usize; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _7: usize; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _8: *mut NoData; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _9: *mut u8; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _10: *const NoData; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _11: *const u8; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
scope 1 {
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:45:7: 45:12
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:+1:7: +1:12
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:45:7: 45:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:45:15: 45:27
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:45:15: 45:27
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:46:7: 46:31
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:46:21: 46:30
_3 = [const 1_u64; 1024]; // scope 1 at $DIR/enum_opt.rs:46:21: 46:30
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:46:7: 46:31
((_2 as Large).0: [u64; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:46:7: 46:31
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:46:7: 46:31
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:46:30: 46:31
- _1 = move _2; // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ StorageLive(_4); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _4 = const [4_usize, 8196_usize]; // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _5 = discriminant(_2); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _6 = _5 as usize (Misc); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _7 = _4[_6]; // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _8 = &raw mut _1; // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _9 = _8 as *mut u8 (Misc); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _10 = &raw const _2; // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _11 = _10 as *const u8 (Misc); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ copy_nonoverlapping(src=_11, dst=_9, count=_7); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ StorageDead(_4); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:46:30: 46:31
_0 = const (); // scope 0 at $DIR/enum_opt.rs:44:15: 47:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:47:1: 47:2
return; // scope 0 at $DIR/enum_opt.rs:47:2: 47:2
}
bb1 (cleanup): {
resume; // scope 0 at $DIR/enum_opt.rs:44:1: 47:2
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:+1:15: +1:27
discriminant(_1) = 1; // scope 0 at $DIR/enum_opt.rs:+1:15: +1:27
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:31
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:+2:21: +2:30
_3 = [const 1_u8; 8192]; // scope 1 at $DIR/enum_opt.rs:+2:21: +2:30
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:31
((_2 as Large).0: [u8; 8192]) = move _3; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:31
discriminant(_2) = 0; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:31
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:+2:30: +2:31
- _1 = move _2; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ StorageLive(_4); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _4 = const [8196_usize, 4_usize]; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _5 = discriminant(_2); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _6 = _5 as usize (IntToInt); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _7 = _4[_6]; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _8 = &raw mut _1; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _9 = _8 as *mut u8 (PtrToPtr); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _10 = &raw const _2; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _11 = _10 as *const u8 (PtrToPtr); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ copy_nonoverlapping(dst = _9, src = _11, count = _7); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ StorageDead(_4); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:+2:30: +2:31
_0 = const (); // scope 0 at $DIR/enum_opt.rs:+0:15: +3:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:+3:1: +3:2
return; // scope 0 at $DIR/enum_opt.rs:+3:2: +3:2
}
}

82
tests/mir-opt/enum_opt.unin.EnumSizeOpt.64bit.diff
View File

@ -2,53 +2,49 @@
+ // MIR for `unin` after EnumSizeOpt
fn unin() -> () {
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:44:15: 44:15
let mut _1: NoData; // in scope 0 at $DIR/enum_opt.rs:45:7: 45:12
let mut _2: NoData; // in scope 0 at $DIR/enum_opt.rs:46:7: 46:31
let mut _3: [u64; 1024]; // in scope 0 at $DIR/enum_opt.rs:46:21: 46:30
+ let mut _4: [usize; 2]; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _5: isize; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _6: usize; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _7: usize; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _8: *mut NoData; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _9: *mut u8; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _10: *const NoData; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
+ let mut _11: *const u8; // in scope 0 at $DIR/enum_opt.rs:46:3: 46:31
let mut _0: (); // return place in scope 0 at $DIR/enum_opt.rs:+0:15: +0:15
let mut _1: NoData; // in scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
let mut _2: NoData; // in scope 0 at $DIR/enum_opt.rs:+2:7: +2:31
let mut _3: [u8; 8192]; // in scope 0 at $DIR/enum_opt.rs:+2:21: +2:30
+ let mut _4: [usize; 2]; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _5: isize; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _6: usize; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _7: usize; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _8: *mut NoData; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _9: *mut u8; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _10: *const NoData; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
+ let mut _11: *const u8; // in scope 0 at $DIR/enum_opt.rs:+2:3: +2:31
scope 1 {
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:45:7: 45:12
debug a => _1; // in scope 1 at $DIR/enum_opt.rs:+1:7: +1:12
}
bb0: {
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:45:7: 45:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:45:15: 45:27
discriminant(_1) = 0; // scope 0 at $DIR/enum_opt.rs:45:15: 45:27
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:46:7: 46:31
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:46:21: 46:30
_3 = [const 1_u64; 1024]; // scope 1 at $DIR/enum_opt.rs:46:21: 46:30
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:46:7: 46:31
((_2 as Large).0: [u64; 1024]) = move _3; // scope 1 at $DIR/enum_opt.rs:46:7: 46:31
discriminant(_2) = 1; // scope 1 at $DIR/enum_opt.rs:46:7: 46:31
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:46:30: 46:31
- _1 = move _2; // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ StorageLive(_4); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _4 = const [8_usize, 8200_usize]; // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _5 = discriminant(_2); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _6 = _5 as usize (Misc); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _7 = _4[_6]; // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _8 = &raw mut _1; // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _9 = _8 as *mut u8 (Misc); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _10 = &raw const _2; // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ _11 = _10 as *const u8 (Misc); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ copy_nonoverlapping(src=_11, dst=_9, count=_7); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
+ StorageDead(_4); // scope 1 at $DIR/enum_opt.rs:46:3: 46:31
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:46:30: 46:31
_0 = const (); // scope 0 at $DIR/enum_opt.rs:44:15: 47:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:47:1: 47:2
return; // scope 0 at $DIR/enum_opt.rs:47:2: 47:2
}
bb1 (cleanup): {
resume; // scope 0 at $DIR/enum_opt.rs:44:1: 47:2
StorageLive(_1); // scope 0 at $DIR/enum_opt.rs:+1:7: +1:12
Deinit(_1); // scope 0 at $DIR/enum_opt.rs:+1:15: +1:27
discriminant(_1) = 1; // scope 0 at $DIR/enum_opt.rs:+1:15: +1:27
StorageLive(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:31
StorageLive(_3); // scope 1 at $DIR/enum_opt.rs:+2:21: +2:30
_3 = [const 1_u8; 8192]; // scope 1 at $DIR/enum_opt.rs:+2:21: +2:30
Deinit(_2); // scope 1 at $DIR/enum_opt.rs:+2:7: +2:31
((_2 as Large).0: [u8; 8192]) = move _3; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:31
discriminant(_2) = 0; // scope 1 at $DIR/enum_opt.rs:+2:7: +2:31
StorageDead(_3); // scope 1 at $DIR/enum_opt.rs:+2:30: +2:31
- _1 = move _2; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ StorageLive(_4); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _4 = const [8196_usize, 4_usize]; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _5 = discriminant(_2); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _6 = _5 as usize (IntToInt); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _7 = _4[_6]; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _8 = &raw mut _1; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _9 = _8 as *mut u8 (PtrToPtr); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _10 = &raw const _2; // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ _11 = _10 as *const u8 (PtrToPtr); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ copy_nonoverlapping(dst = _9, src = _11, count = _7); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
+ StorageDead(_4); // scope 1 at $DIR/enum_opt.rs:+2:3: +2:31
StorageDead(_2); // scope 1 at $DIR/enum_opt.rs:+2:30: +2:31
_0 = const (); // scope 0 at $DIR/enum_opt.rs:+0:15: +3:2
StorageDead(_1); // scope 0 at $DIR/enum_opt.rs:+3:1: +3:2
return; // scope 0 at $DIR/enum_opt.rs:+3:2: +3:2
}
}