bjoernager/rust
bjoernager/rust
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Auto merge of #103138 - nnethercote:merge-BBs, r=bjorn3

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Merge basic blocks where possible when generating LLVM IR.

r? `@ghost`
This commit is contained in:
bors 2022-11-17 01:56:24 +00:00
commit 251831ece9
9 changed files with 427 additions and 352 deletions
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10
compiler/rustc_codegen_llvm/src/builder.rs
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@ -556,15 +556,15 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
}
fn write_operand_repeatedly(
mut self,
&mut self,
cg_elem: OperandRef<'tcx, &'ll Value>,
count: u64,
dest: PlaceRef<'tcx, &'ll Value>,
) -> Self {
) {
let zero = self.const_usize(0);
let count = self.const_usize(count);
let start = dest.project_index(&mut self, zero).llval;
let end = dest.project_index(&mut self, count).llval;
let start = dest.project_index(self, zero).llval;
let end = dest.project_index(self, count).llval;
let header_bb = self.append_sibling_block("repeat_loop_header");
let body_bb = self.append_sibling_block("repeat_loop_body");
@ -592,7 +592,7 @@ impl<'a, 'll, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'll, 'tcx> {
body_bx.br(header_bb);
header_bx.add_incoming_to_phi(current, next, body_bb);
Self::build(self.cx, next_bb)
*self = Self::build(self.cx, next_bb);
}
fn range_metadata(&mut self, load: &'ll Value, range: WrappingRange) {