Auto merge of #69030 - Dylan-DPC:rollup-t9uk7vc, r=Dylan-DPC

Rollup of 6 pull requests

Successful merges:

 - #68897 (clean up E0275 explanation)
 - #68908 (Add long error code explanation message for E0637 )
 - #68932 (self-profile: Support arguments for generic_activities.)
 - #68986 (Make ASCII ctype functions unstably const )
 - #69007 (Clean up E0283 explanation)
 - #69014 (change an instance of span_bug() to struct_span_err() to avoid ICE)

Failed merges:

r? @ghost
This commit is contained in:
bors 2020-02-10 22:46:29 +00:00
commit 0f0cdf6acd
34 changed files with 354 additions and 150 deletions

View File

@ -1072,8 +1072,9 @@ impl char {
/// assert!(!esc.is_ascii_alphabetic());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_alphabetic(&self) -> bool {
pub const fn is_ascii_alphabetic(&self) -> bool {
self.is_ascii() && (*self as u8).is_ascii_alphabetic()
}
@ -1104,8 +1105,9 @@ impl char {
/// assert!(!esc.is_ascii_uppercase());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_uppercase(&self) -> bool {
pub const fn is_ascii_uppercase(&self) -> bool {
self.is_ascii() && (*self as u8).is_ascii_uppercase()
}
@ -1136,8 +1138,9 @@ impl char {
/// assert!(!esc.is_ascii_lowercase());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_lowercase(&self) -> bool {
pub const fn is_ascii_lowercase(&self) -> bool {
self.is_ascii() && (*self as u8).is_ascii_lowercase()
}
@ -1171,8 +1174,9 @@ impl char {
/// assert!(!esc.is_ascii_alphanumeric());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_alphanumeric(&self) -> bool {
pub const fn is_ascii_alphanumeric(&self) -> bool {
self.is_ascii() && (*self as u8).is_ascii_alphanumeric()
}
@ -1203,8 +1207,9 @@ impl char {
/// assert!(!esc.is_ascii_digit());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_digit(&self) -> bool {
pub const fn is_ascii_digit(&self) -> bool {
self.is_ascii() && (*self as u8).is_ascii_digit()
}
@ -1238,8 +1243,9 @@ impl char {
/// assert!(!esc.is_ascii_hexdigit());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_hexdigit(&self) -> bool {
pub const fn is_ascii_hexdigit(&self) -> bool {
self.is_ascii() && (*self as u8).is_ascii_hexdigit()
}
@ -1274,8 +1280,9 @@ impl char {
/// assert!(!esc.is_ascii_punctuation());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_punctuation(&self) -> bool {
pub const fn is_ascii_punctuation(&self) -> bool {
self.is_ascii() && (*self as u8).is_ascii_punctuation()
}
@ -1306,8 +1313,9 @@ impl char {
/// assert!(!esc.is_ascii_graphic());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_graphic(&self) -> bool {
pub const fn is_ascii_graphic(&self) -> bool {
self.is_ascii() && (*self as u8).is_ascii_graphic()
}
@ -1355,8 +1363,9 @@ impl char {
/// assert!(!esc.is_ascii_whitespace());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_whitespace(&self) -> bool {
pub const fn is_ascii_whitespace(&self) -> bool {
self.is_ascii() && (*self as u8).is_ascii_whitespace()
}
@ -1389,8 +1398,9 @@ impl char {
/// assert!(esc.is_ascii_control());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_control(&self) -> bool {
pub const fn is_ascii_control(&self) -> bool {
self.is_ascii() && (*self as u8).is_ascii_control()
}
}

View File

@ -70,6 +70,7 @@
#![feature(bound_cloned)]
#![feature(cfg_target_has_atomic)]
#![feature(concat_idents)]
#![feature(const_ascii_ctype_on_intrinsics)]
#![feature(const_alloc_layout)]
#![feature(const_if_match)]
#![feature(const_checked_int_methods)]

View File

@ -4449,8 +4449,9 @@ impl u8 {
/// assert!(!esc.is_ascii_alphabetic());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_alphabetic(&self) -> bool {
pub const fn is_ascii_alphabetic(&self) -> bool {
matches!(*self, b'A'..=b'Z' | b'a'..=b'z')
}
@ -4481,8 +4482,9 @@ impl u8 {
/// assert!(!esc.is_ascii_uppercase());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_uppercase(&self) -> bool {
pub const fn is_ascii_uppercase(&self) -> bool {
matches!(*self, b'A'..=b'Z')
}
@ -4513,8 +4515,9 @@ impl u8 {
/// assert!(!esc.is_ascii_lowercase());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_lowercase(&self) -> bool {
pub const fn is_ascii_lowercase(&self) -> bool {
matches!(*self, b'a'..=b'z')
}
@ -4548,8 +4551,9 @@ impl u8 {
/// assert!(!esc.is_ascii_alphanumeric());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_alphanumeric(&self) -> bool {
pub const fn is_ascii_alphanumeric(&self) -> bool {
matches!(*self, b'0'..=b'9' | b'A'..=b'Z' | b'a'..=b'z')
}
@ -4580,8 +4584,9 @@ impl u8 {
/// assert!(!esc.is_ascii_digit());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_digit(&self) -> bool {
pub const fn is_ascii_digit(&self) -> bool {
matches!(*self, b'0'..=b'9')
}
@ -4615,8 +4620,9 @@ impl u8 {
/// assert!(!esc.is_ascii_hexdigit());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_hexdigit(&self) -> bool {
pub const fn is_ascii_hexdigit(&self) -> bool {
matches!(*self, b'0'..=b'9' | b'A'..=b'F' | b'a'..=b'f')
}
@ -4651,8 +4657,9 @@ impl u8 {
/// assert!(!esc.is_ascii_punctuation());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_punctuation(&self) -> bool {
pub const fn is_ascii_punctuation(&self) -> bool {
matches!(*self, b'!'..=b'/' | b':'..=b'@' | b'['..=b'`' | b'{'..=b'~')
}
@ -4683,8 +4690,9 @@ impl u8 {
/// assert!(!esc.is_ascii_graphic());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_graphic(&self) -> bool {
pub const fn is_ascii_graphic(&self) -> bool {
matches!(*self, b'!'..=b'~')
}
@ -4732,8 +4740,9 @@ impl u8 {
/// assert!(!esc.is_ascii_whitespace());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_whitespace(&self) -> bool {
pub const fn is_ascii_whitespace(&self) -> bool {
matches!(*self, b'\t' | b'\n' | b'\x0C' | b'\r' | b' ')
}
@ -4766,8 +4775,9 @@ impl u8 {
/// assert!(esc.is_ascii_control());
/// ```
#[stable(feature = "ascii_ctype_on_intrinsics", since = "1.24.0")]
#[rustc_const_unstable(feature = "const_ascii_ctype_on_intrinsics", issue = "68983")]
#[inline]
pub fn is_ascii_control(&self) -> bool {
pub const fn is_ascii_control(&self) -> bool {
matches!(*self, b'\0'..=b'\x1F' | b'\x7F')
}
}

View File

@ -1053,8 +1053,10 @@ where
Q: super::config::QueryDescription<'tcx, Value: Encodable>,
E: 'a + TyEncoder,
{
let desc = &format!("encode_query_results_for_{}", ::std::any::type_name::<Q>());
let _timer = tcx.sess.prof.extra_verbose_generic_activity(desc);
let _timer = tcx
.sess
.prof
.extra_verbose_generic_activity("encode_query_results_for", ::std::any::type_name::<Q>());
let shards = Q::query_cache(tcx).lock_shards();
assert!(shards.iter().all(|shard| shard.active.is_empty()));

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@ -110,23 +110,21 @@ fn prepare_lto(
symbol_white_list.extend(exported_symbols[&cnum].iter().filter_map(symbol_filter));
}
let _timer = cgcx.prof.generic_activity("LLVM_lto_load_upstream_bitcode");
let archive = ArchiveRO::open(&path).expect("wanted an rlib");
let bytecodes = archive
.iter()
.filter_map(|child| child.ok().and_then(|c| c.name().map(|name| (name, c))))
.filter(|&(name, _)| name.ends_with(RLIB_BYTECODE_EXTENSION));
for (name, data) in bytecodes {
let _timer =
cgcx.prof.generic_activity_with_arg("LLVM_lto_load_upstream_bitcode", name);
info!("adding bytecode {}", name);
let bc_encoded = data.data();
let (bc, id) = cgcx
.prof
.extra_verbose_generic_activity(&format!("decode {}", name))
.run(|| match DecodedBytecode::new(bc_encoded) {
Ok(b) => Ok((b.bytecode(), b.identifier().to_string())),
Err(e) => Err(diag_handler.fatal(&e)),
})?;
let (bc, id) = match DecodedBytecode::new(bc_encoded) {
Ok(b) => Ok((b.bytecode(), b.identifier().to_string())),
Err(e) => Err(diag_handler.fatal(&e)),
}?;
let bc = SerializedModule::FromRlib(bc);
upstream_modules.push((bc, CString::new(id).unwrap()));
}
@ -281,14 +279,14 @@ fn fat_lto(
// save and persist everything with the original module.
let mut linker = Linker::new(llmod);
for (bc_decoded, name) in serialized_modules {
let _timer = cgcx.prof.generic_activity("LLVM_fat_lto_link_module");
let _timer = cgcx
.prof
.generic_activity_with_arg("LLVM_fat_lto_link_module", format!("{:?}", name));
info!("linking {:?}", name);
cgcx.prof.extra_verbose_generic_activity(&format!("ll link {:?}", name)).run(|| {
let data = bc_decoded.data();
linker.add(&data).map_err(|()| {
let msg = format!("failed to load bc of {:?}", name);
write::llvm_err(&diag_handler, &msg)
})
let data = bc_decoded.data();
linker.add(&data).map_err(|()| {
let msg = format!("failed to load bc of {:?}", name);
write::llvm_err(&diag_handler, &msg)
})?;
serialized_bitcode.push(bc_decoded);
}
@ -577,6 +575,8 @@ pub(crate) fn run_pass_manager(
config: &ModuleConfig,
thin: bool,
) {
let _timer = cgcx.prof.extra_verbose_generic_activity("LLVM_lto_optimize", &module.name[..]);
// Now we have one massive module inside of llmod. Time to run the
// LTO-specific optimization passes that LLVM provides.
//
@ -634,9 +634,7 @@ pub(crate) fn run_pass_manager(
llvm::LLVMRustAddPass(pm, pass.unwrap());
}
cgcx.prof
.extra_verbose_generic_activity("LTO_passes")
.run(|| llvm::LLVMRunPassManager(pm, module.module_llvm.llmod()));
llvm::LLVMRunPassManager(pm, module.module_llvm.llmod());
llvm::LLVMDisposePassManager(pm);
}
@ -760,7 +758,9 @@ pub unsafe fn optimize_thin_module(
// Like with "fat" LTO, get some better optimizations if landing pads
// are disabled by removing all landing pads.
if cgcx.no_landing_pads {
let _timer = cgcx.prof.generic_activity("LLVM_thin_lto_remove_landing_pads");
let _timer = cgcx
.prof
.generic_activity_with_arg("LLVM_thin_lto_remove_landing_pads", thin_module.name());
llvm::LLVMRustMarkAllFunctionsNounwind(llmod);
save_temp_bitcode(&cgcx, &module, "thin-lto-after-nounwind");
}
@ -774,7 +774,8 @@ pub unsafe fn optimize_thin_module(
// You can find some more comments about these functions in the LLVM
// bindings we've got (currently `PassWrapper.cpp`)
{
let _timer = cgcx.prof.generic_activity("LLVM_thin_lto_rename");
let _timer =
cgcx.prof.generic_activity_with_arg("LLVM_thin_lto_rename", thin_module.name());
if !llvm::LLVMRustPrepareThinLTORename(thin_module.shared.data.0, llmod) {
let msg = "failed to prepare thin LTO module";
return Err(write::llvm_err(&diag_handler, msg));
@ -783,7 +784,9 @@ pub unsafe fn optimize_thin_module(
}
{
let _timer = cgcx.prof.generic_activity("LLVM_thin_lto_resolve_weak");
let _timer = cgcx
.prof
.generic_activity_with_arg("LLVM_thin_lto_resolve_weak", thin_module.name());
if !llvm::LLVMRustPrepareThinLTOResolveWeak(thin_module.shared.data.0, llmod) {
let msg = "failed to prepare thin LTO module";
return Err(write::llvm_err(&diag_handler, msg));
@ -792,7 +795,9 @@ pub unsafe fn optimize_thin_module(
}
{
let _timer = cgcx.prof.generic_activity("LLVM_thin_lto_internalize");
let _timer = cgcx
.prof
.generic_activity_with_arg("LLVM_thin_lto_internalize", thin_module.name());
if !llvm::LLVMRustPrepareThinLTOInternalize(thin_module.shared.data.0, llmod) {
let msg = "failed to prepare thin LTO module";
return Err(write::llvm_err(&diag_handler, msg));
@ -801,7 +806,8 @@ pub unsafe fn optimize_thin_module(
}
{
let _timer = cgcx.prof.generic_activity("LLVM_thin_lto_import");
let _timer =
cgcx.prof.generic_activity_with_arg("LLVM_thin_lto_import", thin_module.name());
if !llvm::LLVMRustPrepareThinLTOImport(thin_module.shared.data.0, llmod) {
let msg = "failed to prepare thin LTO module";
return Err(write::llvm_err(&diag_handler, msg));
@ -839,7 +845,9 @@ pub unsafe fn optimize_thin_module(
// so it appears). Hopefully we can remove this once upstream bugs are
// fixed in LLVM.
{
let _timer = cgcx.prof.generic_activity("LLVM_thin_lto_patch_debuginfo");
let _timer = cgcx
.prof
.generic_activity_with_arg("LLVM_thin_lto_patch_debuginfo", thin_module.name());
llvm::LLVMRustThinLTOPatchDICompileUnit(llmod, cu1);
save_temp_bitcode(cgcx, &module, "thin-lto-after-patch");
}
@ -850,7 +858,6 @@ pub unsafe fn optimize_thin_module(
// populate a thin-specific pass manager, which presumably LLVM treats a
// little differently.
{
let _timer = cgcx.prof.generic_activity("LLVM_thin_lto_optimize");
info!("running thin lto passes over {}", module.name);
let config = cgcx.config(module.kind);
run_pass_manager(cgcx, &module, config, true);

View File

@ -310,7 +310,7 @@ pub(crate) unsafe fn optimize(
module: &ModuleCodegen<ModuleLlvm>,
config: &ModuleConfig,
) -> Result<(), FatalError> {
let _timer = cgcx.prof.generic_activity("LLVM_module_optimize");
let _timer = cgcx.prof.generic_activity_with_arg("LLVM_module_optimize", &module.name[..]);
let llmod = module.module_llvm.llmod();
let llcx = &*module.module_llvm.llcx;
@ -424,23 +424,17 @@ pub(crate) unsafe fn optimize(
// Finally, run the actual optimization passes
{
let _timer = cgcx.prof.generic_activity("LLVM_module_optimize_function_passes");
let desc = &format!("llvm function passes [{}]", module_name.unwrap());
let _timer = if config.time_module {
Some(cgcx.prof.extra_verbose_generic_activity(desc))
} else {
None
};
let _timer = cgcx.prof.extra_verbose_generic_activity(
"LLVM_module_optimize_function_passes",
&module.name[..],
);
llvm::LLVMRustRunFunctionPassManager(fpm, llmod);
}
{
let _timer = cgcx.prof.generic_activity("LLVM_module_optimize_module_passes");
let desc = &format!("llvm module passes [{}]", module_name.unwrap());
let _timer = if config.time_module {
Some(cgcx.prof.extra_verbose_generic_activity(desc))
} else {
None
};
let _timer = cgcx.prof.extra_verbose_generic_activity(
"LLVM_module_optimize_module_passes",
&module.name[..],
);
llvm::LLVMRunPassManager(mpm, llmod);
}
@ -480,7 +474,7 @@ pub(crate) unsafe fn codegen(
module: ModuleCodegen<ModuleLlvm>,
config: &ModuleConfig,
) -> Result<CompiledModule, FatalError> {
let _timer = cgcx.prof.generic_activity("LLVM_module_codegen");
let _timer = cgcx.prof.generic_activity_with_arg("LLVM_module_codegen", &module.name[..]);
{
let llmod = module.module_llvm.llmod();
let llcx = &*module.module_llvm.llcx;
@ -533,12 +527,17 @@ pub(crate) unsafe fn codegen(
let obj_out = cgcx.output_filenames.temp_path(OutputType::Object, module_name);
if write_bc || config.emit_bc_compressed || config.embed_bitcode {
let _timer = cgcx.prof.generic_activity("LLVM_module_codegen_make_bitcode");
let _timer = cgcx
.prof
.generic_activity_with_arg("LLVM_module_codegen_make_bitcode", &module.name[..]);
let thin = ThinBuffer::new(llmod);
let data = thin.data();
if write_bc {
let _timer = cgcx.prof.generic_activity("LLVM_module_codegen_emit_bitcode");
let _timer = cgcx.prof.generic_activity_with_arg(
"LLVM_module_codegen_emit_bitcode",
&module.name[..],
);
if let Err(e) = fs::write(&bc_out, data) {
let msg = format!("failed to write bytecode to {}: {}", bc_out.display(), e);
diag_handler.err(&msg);
@ -546,13 +545,18 @@ pub(crate) unsafe fn codegen(
}
if config.embed_bitcode {
let _timer = cgcx.prof.generic_activity("LLVM_module_codegen_embed_bitcode");
let _timer = cgcx.prof.generic_activity_with_arg(
"LLVM_module_codegen_embed_bitcode",
&module.name[..],
);
embed_bitcode(cgcx, llcx, llmod, Some(data));
}
if config.emit_bc_compressed {
let _timer =
cgcx.prof.generic_activity("LLVM_module_codegen_emit_compressed_bitcode");
let _timer = cgcx.prof.generic_activity_with_arg(
"LLVM_module_codegen_emit_compressed_bitcode",
&module.name[..],
);
let dst = bc_out.with_extension(RLIB_BYTECODE_EXTENSION);
let data = bytecode::encode(&module.name, data);
if let Err(e) = fs::write(&dst, data) {
@ -565,15 +569,10 @@ pub(crate) unsafe fn codegen(
}
{
let desc = &format!("codegen passes [{}]", module_name.unwrap());
let _timer = if config.time_module {
Some(cgcx.prof.extra_verbose_generic_activity(desc))
} else {
None
};
if config.emit_ir {
let _timer = cgcx.prof.generic_activity("LLVM_module_codegen_emit_ir");
let _timer = cgcx
.prof
.generic_activity_with_arg("LLVM_module_codegen_emit_ir", &module.name[..]);
let out = cgcx.output_filenames.temp_path(OutputType::LlvmAssembly, module_name);
let out_c = path_to_c_string(&out);
@ -618,7 +617,9 @@ pub(crate) unsafe fn codegen(
}
if config.emit_asm || asm_to_obj {
let _timer = cgcx.prof.generic_activity("LLVM_module_codegen_emit_asm");
let _timer = cgcx
.prof
.generic_activity_with_arg("LLVM_module_codegen_emit_asm", &module.name[..]);
let path = cgcx.output_filenames.temp_path(OutputType::Assembly, module_name);
// We can't use the same module for asm and binary output, because that triggers
@ -638,7 +639,9 @@ pub(crate) unsafe fn codegen(
}
if write_obj {
let _timer = cgcx.prof.generic_activity("LLVM_module_codegen_emit_obj");
let _timer = cgcx
.prof
.generic_activity_with_arg("LLVM_module_codegen_emit_obj", &module.name[..]);
with_codegen(tm, llmod, config.no_builtins, |cpm| {
write_output_file(
diag_handler,
@ -650,7 +653,9 @@ pub(crate) unsafe fn codegen(
)
})?;
} else if asm_to_obj {
let _timer = cgcx.prof.generic_activity("LLVM_module_codegen_asm_to_obj");
let _timer = cgcx
.prof
.generic_activity_with_arg("LLVM_module_codegen_asm_to_obj", &module.name[..]);
let assembly = cgcx.output_filenames.temp_path(OutputType::Assembly, module_name);
run_assembler(cgcx, diag_handler, &assembly, &obj_out);

View File

@ -1648,7 +1648,7 @@ fn add_upstream_rust_crates<'a, B: ArchiveBuilder<'a>>(
let name = cratepath.file_name().unwrap().to_str().unwrap();
let name = &name[3..name.len() - 5]; // chop off lib/.rlib
sess.prof.extra_verbose_generic_activity(&format!("altering {}.rlib", name)).run(|| {
sess.prof.generic_activity_with_arg("link_altering_rlib", name).run(|| {
let mut archive = <B as ArchiveBuilder>::new(sess, &dst, Some(cratepath));
archive.update_symbols();

View File

@ -21,6 +21,7 @@ use rustc::session::Session;
use rustc::ty::TyCtxt;
use rustc_data_structures::fx::FxHashMap;
use rustc_data_structures::profiling::SelfProfilerRef;
use rustc_data_structures::profiling::TimingGuard;
use rustc_data_structures::profiling::VerboseTimingGuard;
use rustc_data_structures::svh::Svh;
use rustc_data_structures::sync::Lrc;
@ -691,11 +692,17 @@ impl<B: WriteBackendMethods> WorkItem<B> {
}
}
fn profiling_event_id(&self) -> &'static str {
fn start_profiling<'a>(&self, cgcx: &'a CodegenContext<B>) -> TimingGuard<'a> {
match *self {
WorkItem::Optimize(_) => "codegen_module_optimize",
WorkItem::CopyPostLtoArtifacts(_) => "codegen_copy_artifacts_from_incr_cache",
WorkItem::LTO(_) => "codegen_module_perform_lto",
WorkItem::Optimize(ref m) => {
cgcx.prof.generic_activity_with_arg("codegen_module_optimize", &m.name[..])
}
WorkItem::CopyPostLtoArtifacts(ref m) => cgcx
.prof
.generic_activity_with_arg("codegen_copy_artifacts_from_incr_cache", &m.name[..]),
WorkItem::LTO(ref m) => {
cgcx.prof.generic_activity_with_arg("codegen_module_perform_lto", m.name())
}
}
}
}
@ -1520,7 +1527,7 @@ fn start_executing_work<B: ExtraBackendMethods>(
llvm_start_time: &mut Option<VerboseTimingGuard<'a>>,
) {
if config.time_module && llvm_start_time.is_none() {
*llvm_start_time = Some(prof.extra_verbose_generic_activity("LLVM_passes"));
*llvm_start_time = Some(prof.extra_verbose_generic_activity("LLVM_passes", "crate"));
}
}
}
@ -1575,7 +1582,7 @@ fn spawn_work<B: ExtraBackendMethods>(cgcx: CodegenContext<B>, work: WorkItem<B>
// as a diagnostic was already sent off to the main thread - just
// surface that there was an error in this worker.
bomb.result = {
let _prof_timer = cgcx.prof.generic_activity(work.profiling_event_id());
let _prof_timer = work.start_profiling(&cgcx);
Some(execute_work_item(&cgcx, work))
};
});

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@ -83,6 +83,9 @@
use crate::fx::FxHashMap;
use std::borrow::Borrow;
use std::collections::hash_map::Entry;
use std::convert::Into;
use std::error::Error;
use std::fs;
use std::path::Path;
@ -123,11 +126,14 @@ bitflags::bitflags! {
const INCR_CACHE_LOADS = 1 << 4;
const QUERY_KEYS = 1 << 5;
const FUNCTION_ARGS = 1 << 6;
const DEFAULT = Self::GENERIC_ACTIVITIES.bits |
Self::QUERY_PROVIDERS.bits |
Self::QUERY_BLOCKED.bits |
Self::INCR_CACHE_LOADS.bits;
const ARGS = Self::QUERY_KEYS.bits | Self::FUNCTION_ARGS.bits;
}
}
@ -142,6 +148,8 @@ const EVENT_FILTERS_BY_NAME: &[(&str, EventFilter)] = &[
("query-blocked", EventFilter::QUERY_BLOCKED),
("incr-cache-load", EventFilter::INCR_CACHE_LOADS),
("query-keys", EventFilter::QUERY_KEYS),
("function-args", EventFilter::FUNCTION_ARGS),
("args", EventFilter::ARGS),
];
/// Something that uniquely identifies a query invocation.
@ -216,43 +224,68 @@ impl SelfProfilerRef {
/// VerboseTimingGuard returned from this call is dropped. In addition to recording
/// a measureme event, "verbose" generic activities also print a timing entry to
/// stdout if the compiler is invoked with -Ztime or -Ztime-passes.
#[inline(always)]
pub fn verbose_generic_activity<'a>(
&'a self,
event_id: &'static str,
event_label: &'static str,
) -> VerboseTimingGuard<'a> {
VerboseTimingGuard::start(
event_id,
self.print_verbose_generic_activities,
self.generic_activity(event_id),
)
let message =
if self.print_verbose_generic_activities { Some(event_label.to_owned()) } else { None };
VerboseTimingGuard::start(message, self.generic_activity(event_label))
}
/// Start profiling a extra verbose generic activity. Profiling continues until the
/// VerboseTimingGuard returned from this call is dropped. In addition to recording
/// a measureme event, "extra verbose" generic activities also print a timing entry to
/// stdout if the compiler is invoked with -Ztime-passes.
#[inline(always)]
pub fn extra_verbose_generic_activity<'a>(
pub fn extra_verbose_generic_activity<'a, A>(
&'a self,
event_id: &'a str,
) -> VerboseTimingGuard<'a> {
// FIXME: This does not yet emit a measureme event
// because callers encode arguments into `event_id`.
VerboseTimingGuard::start(
event_id,
self.print_extra_verbose_generic_activities,
TimingGuard::none(),
)
event_label: &'static str,
event_arg: A,
) -> VerboseTimingGuard<'a>
where
A: Borrow<str> + Into<String>,
{
let message = if self.print_extra_verbose_generic_activities {
Some(format!("{}({})", event_label, event_arg.borrow()))
} else {
None
};
VerboseTimingGuard::start(message, self.generic_activity_with_arg(event_label, event_arg))
}
/// Start profiling a generic activity. Profiling continues until the
/// TimingGuard returned from this call is dropped.
#[inline(always)]
pub fn generic_activity(&self, event_id: &'static str) -> TimingGuard<'_> {
pub fn generic_activity(&self, event_label: &'static str) -> TimingGuard<'_> {
self.exec(EventFilter::GENERIC_ACTIVITIES, |profiler| {
let event_id = profiler.get_or_alloc_cached_string(event_id);
let event_id = EventId::from_label(event_id);
let event_label = profiler.get_or_alloc_cached_string(event_label);
let event_id = EventId::from_label(event_label);
TimingGuard::start(profiler, profiler.generic_activity_event_kind, event_id)
})
}
/// Start profiling a generic activity. Profiling continues until the
/// TimingGuard returned from this call is dropped.
#[inline(always)]
pub fn generic_activity_with_arg<A>(
&self,
event_label: &'static str,
event_arg: A,
) -> TimingGuard<'_>
where
A: Borrow<str> + Into<String>,
{
self.exec(EventFilter::GENERIC_ACTIVITIES, |profiler| {
let builder = EventIdBuilder::new(&profiler.profiler);
let event_label = profiler.get_or_alloc_cached_string(event_label);
let event_id = if profiler.event_filter_mask.contains(EventFilter::FUNCTION_ARGS) {
let event_arg = profiler.get_or_alloc_cached_string(event_arg);
builder.from_label_and_arg(event_label, event_arg)
} else {
builder.from_label(event_label)
};
TimingGuard::start(profiler, profiler.generic_activity_event_kind, event_id)
})
}
@ -337,7 +370,7 @@ pub struct SelfProfiler {
profiler: Profiler,
event_filter_mask: EventFilter,
string_cache: RwLock<FxHashMap<&'static str, StringId>>,
string_cache: RwLock<FxHashMap<String, StringId>>,
query_event_kind: StringId,
generic_activity_event_kind: StringId,
@ -419,13 +452,16 @@ impl SelfProfiler {
/// Gets a `StringId` for the given string. This method makes sure that
/// any strings going through it will only be allocated once in the
/// profiling data.
pub fn get_or_alloc_cached_string(&self, s: &'static str) -> StringId {
pub fn get_or_alloc_cached_string<A>(&self, s: A) -> StringId
where
A: Borrow<str> + Into<String>,
{
// Only acquire a read-lock first since we assume that the string is
// already present in the common case.
{
let string_cache = self.string_cache.read();
if let Some(&id) = string_cache.get(s) {
if let Some(&id) = string_cache.get(s.borrow()) {
return id;
}
}
@ -433,7 +469,13 @@ impl SelfProfiler {
let mut string_cache = self.string_cache.write();
// Check if the string has already been added in the small time window
// between dropping the read lock and acquiring the write lock.
*string_cache.entry(s).or_insert_with(|| self.profiler.alloc_string(s))
match string_cache.entry(s.into()) {
Entry::Occupied(e) => *e.get(),
Entry::Vacant(e) => {
let string_id = self.profiler.alloc_string(&e.key()[..]);
*e.insert(string_id)
}
}
}
pub fn map_query_invocation_id_to_string(&self, from: QueryInvocationId, to: StringId) {
@ -498,18 +540,13 @@ impl<'a> TimingGuard<'a> {
#[must_use]
pub struct VerboseTimingGuard<'a> {
event_id: &'a str,
start: Option<Instant>,
start_and_message: Option<(Instant, String)>,
_guard: TimingGuard<'a>,
}
impl<'a> VerboseTimingGuard<'a> {
pub fn start(event_id: &'a str, verbose: bool, _guard: TimingGuard<'a>) -> Self {
VerboseTimingGuard {
event_id,
_guard,
start: if unlikely!(verbose) { Some(Instant::now()) } else { None },
}
pub fn start(message: Option<String>, _guard: TimingGuard<'a>) -> Self {
VerboseTimingGuard { _guard, start_and_message: message.map(|msg| (Instant::now(), msg)) }
}
#[inline(always)]
@ -521,7 +558,9 @@ impl<'a> VerboseTimingGuard<'a> {
impl Drop for VerboseTimingGuard<'_> {
fn drop(&mut self) {
self.start.map(|start| print_time_passes_entry(true, self.event_id, start.elapsed()));
if let Some((start, ref message)) = self.start_and_message {
print_time_passes_entry(true, &message[..], start.elapsed());
}
}
}

View File

@ -353,6 +353,7 @@ E0631: include_str!("./error_codes/E0631.md"),
E0633: include_str!("./error_codes/E0633.md"),
E0635: include_str!("./error_codes/E0635.md"),
E0636: include_str!("./error_codes/E0636.md"),
E0637: include_str!("./error_codes/E0637.md"),
E0638: include_str!("./error_codes/E0638.md"),
E0639: include_str!("./error_codes/E0639.md"),
E0641: include_str!("./error_codes/E0641.md"),
@ -584,7 +585,6 @@ E0746: include_str!("./error_codes/E0746.md"),
E0632, // cannot provide explicit generic arguments when `impl Trait` is
// used in argument position
E0634, // type has conflicting packed representaton hints
E0637, // "'_" is not a valid lifetime bound
E0640, // infer outlives requirements
// E0645, // trait aliases not finished
E0657, // `impl Trait` can only capture lifetimes bound at the fn level

View File

@ -1,8 +1,6 @@
This error occurs when there was a recursive trait requirement that overflowed
before it could be evaluated. Often this means that there is unbounded
recursion in resolving some type bounds.
An evaluation of a trait requirement overflowed.
For example, in the following code:
Erroneous code example:
```compile_fail,E0275
trait Foo {}
@ -12,6 +10,10 @@ struct Bar<T>(T);
impl<T> Foo for T where Bar<T>: Foo {}
```
This error occurs when there was a recursive trait requirement that overflowed
before it could be evaluated. This often means that there is an unbounded
recursion in resolving some type bounds.
To determine if a `T` is `Foo`, we need to check if `Bar<T>` is `Foo`. However,
to do this check, we need to determine that `Bar<Bar<T>>` is `Foo`. To
determine this, we check if `Bar<Bar<Bar<T>>>` is `Foo`, and so on. This is

View File

@ -1,7 +1,6 @@
This error occurs when the compiler doesn't have enough information
to unambiguously choose an implementation.
An implementation cannot be chosen unambiguously because of lack of information.
For example:
Erroneous code example:
```compile_fail,E0283
trait Generator {
@ -27,7 +26,9 @@ fn main() {
}
```
To resolve this error use the concrete type:
This error can be solved by adding type annotations that provide the missing
information to the compiler. In this case, the solution is to use a concrete
type:
```
trait Generator {

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@ -0,0 +1,32 @@
An underscore `_` character has been used as the identifier for a lifetime.
Erroneous example:
```compile_fail,E0106,E0637
fn longest<'_>(str1: &'_ str, str2: &'_ str) -> &'_ str {
//^^ `'_` is a reserved lifetime name
if str1.len() > str2.len() {
str1
} else {
str2
}
}
```
`'_`, cannot be used as a lifetime identifier because it is a reserved for the
anonymous lifetime. To fix this, use a lowercase letter such as 'a, or a series
of lowercase letters such as `'foo`. For more information, see [the
book][bk-no]. For more information on using the anonymous lifetime in rust
nightly, see [the nightly book][bk-al].
Corrected example:
```
fn longest<'a>(str1: &'a str, str2: &'a str) -> &'a str {
if str1.len() > str2.len() {
str1
} else {
str2
}
}
```
[bk-no]: https://doc.rust-lang.org/book/appendix-02-operators.html#non-operator-symbols
[bk-al]: https://doc.rust-lang.org/nightly/edition-guide/rust-2018/ownership-and-lifetimes/the-anonymous-lifetime.html

View File

@ -342,10 +342,8 @@ pub fn check_ast_crate<T: EarlyLintPass>(
}
} else {
for pass in &mut passes {
buffered = sess
.prof
.extra_verbose_generic_activity(&format!("running lint: {}", pass.name()))
.run(|| {
buffered =
sess.prof.extra_verbose_generic_activity("run_lint", pass.name()).run(|| {
early_lint_crate(
sess,
lint_store,

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@ -441,27 +441,20 @@ fn late_lint_crate<'tcx, T: for<'a> LateLintPass<'a, 'tcx>>(tcx: TyCtxt<'tcx>, b
late_lint_pass_crate(tcx, builtin_lints);
} else {
for pass in &mut passes {
tcx.sess
.prof
.extra_verbose_generic_activity(&format!("running late lint: {}", pass.name()))
.run(|| {
late_lint_pass_crate(tcx, LateLintPassObjects { lints: slice::from_mut(pass) });
});
tcx.sess.prof.extra_verbose_generic_activity("run_late_lint", pass.name()).run(|| {
late_lint_pass_crate(tcx, LateLintPassObjects { lints: slice::from_mut(pass) });
});
}
let mut passes: Vec<_> =
unerased_lint_store(tcx).late_module_passes.iter().map(|pass| (pass)()).collect();
for pass in &mut passes {
tcx.sess
.prof
.extra_verbose_generic_activity(&format!(
"running late module lint: {}",
pass.name()
))
.run(|| {
tcx.sess.prof.extra_verbose_generic_activity("run_late_module_lint", pass.name()).run(
|| {
late_lint_pass_crate(tcx, LateLintPassObjects { lints: slice::from_mut(pass) });
});
},
);
}
}
}

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@ -214,7 +214,10 @@ impl<'a> Parser<'a> {
let path = match bounds.remove(0) {
GenericBound::Trait(pt, ..) => pt.trait_ref.path,
GenericBound::Outlives(..) => {
self.span_bug(ty.span, "unexpected lifetime bound")
return Err(self.struct_span_err(
ty.span,
"expected trait bound, not lifetime bound",
));
}
};
self.parse_remaining_bounds(Vec::new(), path, lo, true)

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@ -38,3 +38,4 @@ LL | #![feature(const_generics)]
error: aborting due to 5 previous errors
For more information about this error, try `rustc --explain E0637`.

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@ -0,0 +1,55 @@
// run-pass
#![feature(const_ascii_ctype_on_intrinsics)]
macro_rules! suite {
( $( $fn:ident => [$a:ident, $A:ident, $nine:ident, $dot:ident, $space:ident]; )* ) => {
$(
mod $fn {
const CHAR_A_LOWER: bool = 'a'.$fn();
const CHAR_A_UPPER: bool = 'A'.$fn();
const CHAR_NINE: bool = '9'.$fn();
const CHAR_DOT: bool = '.'.$fn();
const CHAR_SPACE: bool = ' '.$fn();
const U8_A_LOWER: bool = b'a'.$fn();
const U8_A_UPPER: bool = b'A'.$fn();
const U8_NINE: bool = b'9'.$fn();
const U8_DOT: bool = b'.'.$fn();
const U8_SPACE: bool = b' '.$fn();
pub fn run() {
assert_eq!(CHAR_A_LOWER, $a);
assert_eq!(CHAR_A_UPPER, $A);
assert_eq!(CHAR_NINE, $nine);
assert_eq!(CHAR_DOT, $dot);
assert_eq!(CHAR_SPACE, $space);
assert_eq!(U8_A_LOWER, $a);
assert_eq!(U8_A_UPPER, $A);
assert_eq!(U8_NINE, $nine);
assert_eq!(U8_DOT, $dot);
assert_eq!(U8_SPACE, $space);
}
}
)*
fn main() {
$( $fn::run(); )*
}
}
}
suite! {
// 'a' 'A' '9' '.' ' '
is_ascii_alphabetic => [true, true, false, false, false];
is_ascii_uppercase => [false, true, false, false, false];
is_ascii_lowercase => [true, false, false, false, false];
is_ascii_alphanumeric => [true, true, true, false, false];
is_ascii_digit => [false, false, true, false, false];
is_ascii_hexdigit => [true, true, true, false, false];
is_ascii_punctuation => [false, false, false, true, false];
is_ascii_graphic => [true, true, true, true, false];
is_ascii_whitespace => [false, false, false, false, true];
is_ascii_control => [false, false, false, false, false];
}

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@ -18,3 +18,4 @@ LL | impl<'a: '_> Bar<'a> {
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0637`.

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@ -18,4 +18,5 @@ LL | fn bar<'b, L: X<&'b Nested<i32>>>(){}
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0106`.
Some errors have detailed explanations: E0106, E0637.
For more information about an error, try `rustc --explain E0106`.

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@ -0,0 +1,4 @@
enum e{A((?'a a+?+l))}
//~^ ERROR `?` may only modify trait bounds, not lifetime bounds
//~| ERROR expected one of `)`, `+`, or `,`
//~| ERROR expected trait bound, not lifetime bound

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@ -0,0 +1,20 @@
error: `?` may only modify trait bounds, not lifetime bounds
--> $DIR/issue-68890.rs:1:11
|
LL | enum e{A((?'a a+?+l))}
| ^
error: expected one of `)`, `+`, or `,`, found `a`
--> $DIR/issue-68890.rs:1:15
|
LL | enum e{A((?'a a+?+l))}
| ^ expected one of `)`, `+`, or `,`
error: expected trait bound, not lifetime bound
--> $DIR/issue-68890.rs:1:11
|
LL | enum e{A((?'a a+?+l))}
| ^^^
error: aborting due to 3 previous errors

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@ -36,3 +36,4 @@ LL | fn foo<'_>() {
error: aborting due to 6 previous errors
For more information about this error, try `rustc --explain E0637`.

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@ -38,4 +38,5 @@ LL | fn foo2<'a>(_: &'a u8, y: &'a u8) -> &'a u8 { y }
error: aborting due to 5 previous errors
For more information about this error, try `rustc --explain E0106`.
Some errors have detailed explanations: E0106, E0637.
For more information about an error, try `rustc --explain E0106`.

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@ -6,3 +6,4 @@ LL | impl<'b: '_> Foo<'b> for i32 {}
error: aborting due to previous error
For more information about this error, try `rustc --explain E0637`.

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@ -6,3 +6,4 @@ LL | T: WithType<&u32>
error: aborting due to previous error
For more information about this error, try `rustc --explain E0637`.

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@ -6,3 +6,4 @@ LL | T: WithType<&u32>
error: aborting due to previous error
For more information about this error, try `rustc --explain E0637`.

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@ -6,3 +6,4 @@ LL | T: WithRegion<'_>
error: aborting due to previous error
For more information about this error, try `rustc --explain E0637`.

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@ -6,3 +6,4 @@ LL | T: WithRegion<'_>
error: aborting due to previous error
For more information about this error, try `rustc --explain E0637`.

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@ -6,3 +6,4 @@ LL | T: WithType<&u32>
error: aborting due to previous error
For more information about this error, try `rustc --explain E0637`.

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@ -6,3 +6,4 @@ LL | T: WithType<&u32>
error: aborting due to previous error
For more information about this error, try `rustc --explain E0637`.

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@ -6,3 +6,4 @@ LL | T: WithRegion<'_>
error: aborting due to previous error
For more information about this error, try `rustc --explain E0637`.

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@ -6,3 +6,4 @@ LL | T: WithRegion<'_>
error: aborting due to previous error
For more information about this error, try `rustc --explain E0637`.

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@ -12,3 +12,4 @@ LL | impl<T: '_> Foo<'static> for Vec<T> {}
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0637`.