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Add a few miscellaneous comments.

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This commit is contained in:
Dan Gohman
2018-08-11 07:22:38 -07:00
parent f34531ab36
commit d4a83576e4
2 changed files with 3 additions and 1 deletions
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1
lib/codegen/src/isa/x86/abi.rs
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@@ -217,6 +217,7 @@ fn callee_saved_gprs(isa: &TargetIsa) -> &'static [RU] {
} }
} }
/// Get the set of callee-saved registers that are used.
fn callee_saved_gprs_used(isa: &TargetIsa, func: &ir::Function) -> RegisterSet { fn callee_saved_gprs_used(isa: &TargetIsa, func: &ir::Function) -> RegisterSet {
let mut all_callee_saved = RegisterSet::empty(); let mut all_callee_saved = RegisterSet::empty();
for reg in callee_saved_gprs(isa) { for reg in callee_saved_gprs(isa) {

3
lib/codegen/src/legalizer/call.rs
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@@ -8,7 +8,8 @@ use flowgraph::ControlFlowGraph;
use ir::{self, InstBuilder}; use ir::{self, InstBuilder};
use isa::TargetIsa; use isa::TargetIsa;
/// Expand a `call` instruction. /// Expand a `call` instruction. This lowers it to a `call_indirect`, which
/// is only done if the ABI doesn't support direct calls.
pub fn expand_call( pub fn expand_call(
inst: ir::Inst, inst: ir::Inst,
func: &mut ir::Function, func: &mut ir::Function,