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Remove an unnecessary block scope.

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This commit is contained in:
Nicholas Nethercote 2020-03-20 12:46:27 +11:00
parent 47c8f3f56b
commit e4b36baf54
1 changed files with 72 additions and 82 deletions
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154
src/librustc_codegen_llvm/back/write.rs
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@ -686,100 +686,90 @@ pub(crate) unsafe fn codegen(
embed_bitcode(cgcx, llcx, llmod, None);
}
{
if config.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);
if config.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);
extern "C" fn demangle_callback(
input_ptr: *const c_char,
input_len: size_t,
output_ptr: *mut c_char,
output_len: size_t,
) -> size_t {
let input = unsafe {
slice::from_raw_parts(input_ptr as *const u8, input_len as usize)
};
extern "C" fn demangle_callback(
input_ptr: *const c_char,
input_len: size_t,
output_ptr: *mut c_char,
output_len: size_t,
) -> size_t {
let input =
unsafe { slice::from_raw_parts(input_ptr as *const u8, input_len as usize) };
let input = match str::from_utf8(input) {
Ok(s) => s,
Err(_) => return 0,
};
let input = match str::from_utf8(input) {
Ok(s) => s,
Err(_) => return 0,
};
let output = unsafe {
slice::from_raw_parts_mut(output_ptr as *mut u8, output_len as usize)
};
let mut cursor = io::Cursor::new(output);
let output = unsafe {
slice::from_raw_parts_mut(output_ptr as *mut u8, output_len as usize)
};
let mut cursor = io::Cursor::new(output);
let demangled = match rustc_demangle::try_demangle(input) {
Ok(d) => d,
Err(_) => return 0,
};
let demangled = match rustc_demangle::try_demangle(input) {
Ok(d) => d,
Err(_) => return 0,
};
if write!(cursor, "{:#}", demangled).is_err() {
// Possible only if provided buffer is not big enough
return 0;
}
cursor.position() as size_t
if write!(cursor, "{:#}", demangled).is_err() {
// Possible only if provided buffer is not big enough
return 0;
}
let result = llvm::LLVMRustPrintModule(llmod, out_c.as_ptr(), demangle_callback);
result.into_result().map_err(|()| {
let msg = format!("failed to write LLVM IR to {}", out.display());
llvm_err(diag_handler, &msg)
})?;
cursor.position() as size_t
}
if config.emit_asm || (config.emit_obj && config.no_integrated_as) {
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);
let result = llvm::LLVMRustPrintModule(llmod, out_c.as_ptr(), demangle_callback);
result.into_result().map_err(|()| {
let msg = format!("failed to write LLVM IR to {}", out.display());
llvm_err(diag_handler, &msg)
})?;
}
// We can't use the same module for asm and binary output, because that triggers
// various errors like invalid IR or broken binaries, so we might have to clone the
// module to produce the asm output
let llmod = if config.emit_obj { llvm::LLVMCloneModule(llmod) } else { llmod };
with_codegen(tm, llmod, config.no_builtins, |cpm| {
write_output_file(
diag_handler,
tm,
cpm,
llmod,
&path,
llvm::FileType::AssemblyFile,
)
})?;
}
if config.emit_asm || (config.emit_obj && config.no_integrated_as) {
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);
if config.emit_obj && !config.obj_is_bitcode && !config.no_integrated_as {
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,
tm,
cpm,
llmod,
&obj_out,
llvm::FileType::ObjectFile,
)
})?;
} else if config.emit_obj && config.no_integrated_as {
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);
// We can't use the same module for asm and binary output, because that triggers
// various errors like invalid IR or broken binaries, so we might have to clone the
// module to produce the asm output
let llmod = if config.emit_obj { llvm::LLVMCloneModule(llmod) } else { llmod };
with_codegen(tm, llmod, config.no_builtins, |cpm| {
write_output_file(diag_handler, tm, cpm, llmod, &path, llvm::FileType::AssemblyFile)
})?;
}
if !config.emit_asm && !cgcx.save_temps {
drop(fs::remove_file(&assembly));
}
if config.emit_obj && !config.obj_is_bitcode && !config.no_integrated_as {
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,
tm,
cpm,
llmod,
&obj_out,
llvm::FileType::ObjectFile,
)
})?;
} else if config.emit_obj && config.no_integrated_as {
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);
if !config.emit_asm && !cgcx.save_temps {
drop(fs::remove_file(&assembly));
}
}