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Use with_capacity to minimize reallocation.

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This commit is contained in:
Dan Gohman
2019-02-22 16:02:19 -08:00
parent cd21efd88a
commit 538ef20f50
1 changed files with 2 additions and 2 deletions
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4
lib/environ/src/cranelift.rs
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@@ -87,8 +87,8 @@ pub fn compile_module<'data, 'module>(
function_body_inputs: PrimaryMap<DefinedFuncIndex, &'data [u8]>, function_body_inputs: PrimaryMap<DefinedFuncIndex, &'data [u8]>,
isa: &dyn isa::TargetIsa, isa: &dyn isa::TargetIsa,
) -> Result<(Compilation, Relocations), CompileError> { ) -> Result<(Compilation, Relocations), CompileError> {
let mut functions = PrimaryMap::new(); let mut functions = PrimaryMap::with_capacity(function_body_inputs.len());
let mut relocations = PrimaryMap::new(); let mut relocations = PrimaryMap::with_capacity(function_body_inputs.len());
for (i, input) in function_body_inputs.into_iter() { for (i, input) in function_body_inputs.into_iter() {
let func_index = module.func_index(i); let func_index = module.func_index(i);
let mut context = Context::new(); let mut context = Context::new();