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Auto merge of #113116 - nnethercote:codegen-opts, r=oli-obk

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A mish-mash of micro-optimizations

These were aimed at speeding up LLVM codegen, but ended up affecting other places as well.

r? `@bjorn3`
This commit is contained in:
bors
2023-06-30 00:35:19 +00:00
parent 330727467b 7e786e81b0
commit 8aed93d912
12 changed files with 32 additions and 117 deletions
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21
compiler/rustc_codegen_llvm/src/builder.rs
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@@ -23,6 +23,7 @@ use rustc_span::Span;
use rustc_symbol_mangling::typeid::{kcfi_typeid_for_fnabi, typeid_for_fnabi, TypeIdOptions};
use rustc_target::abi::{self, call::FnAbi, Align, Size, WrappingRange};
use rustc_target::spec::{HasTargetSpec, SanitizerSet, Target};
use smallvec::SmallVec;
use std::borrow::Cow;
use std::iter;
use std::ops::Deref;
@@ -225,7 +226,10 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
let args = self.check_call("invoke", llty, llfn, args);
let funclet_bundle = funclet.map(|funclet| funclet.bundle());
let funclet_bundle = funclet_bundle.as_ref().map(|b| &*b.raw);
let mut bundles = vec![funclet_bundle];
let mut bundles: SmallVec<[_; 2]> = SmallVec::new();
if let Some(funclet_bundle) = funclet_bundle {
bundles.push(funclet_bundle);
}
// Emit CFI pointer type membership test
self.cfi_type_test(fn_attrs, fn_abi, llfn);
@@ -233,9 +237,10 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
// Emit KCFI operand bundle
let kcfi_bundle = self.kcfi_operand_bundle(fn_attrs, fn_abi, llfn);
let kcfi_bundle = kcfi_bundle.as_ref().map(|b| &*b.raw);
bundles.push(kcfi_bundle);
if let Some(kcfi_bundle) = kcfi_bundle {
bundles.push(kcfi_bundle);
}
bundles.retain(|bundle| bundle.is_some());
let invoke = unsafe {
llvm::LLVMRustBuildInvoke(
self.llbuilder,
@@ -1181,7 +1186,10 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
let args = self.check_call("call", llty, llfn, args);
let funclet_bundle = funclet.map(|funclet| funclet.bundle());
let funclet_bundle = funclet_bundle.as_ref().map(|b| &*b.raw);
let mut bundles = vec![funclet_bundle];
let mut bundles: SmallVec<[_; 2]> = SmallVec::new();
if let Some(funclet_bundle) = funclet_bundle {
bundles.push(funclet_bundle);
}
// Emit CFI pointer type membership test
self.cfi_type_test(fn_attrs, fn_abi, llfn);
@@ -1189,9 +1197,10 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
// Emit KCFI operand bundle
let kcfi_bundle = self.kcfi_operand_bundle(fn_attrs, fn_abi, llfn);
let kcfi_bundle = kcfi_bundle.as_ref().map(|b| &*b.raw);
bundles.push(kcfi_bundle);
if let Some(kcfi_bundle) = kcfi_bundle {
bundles.push(kcfi_bundle);
}
bundles.retain(|bundle| bundle.is_some());
let call = unsafe {
llvm::LLVMRustBuildCall(
self.llbuilder,