Refactor matches that used to consume BranchInfo (#5734)

Explicitly borrow the instruction data, and use a mutable borrow to avoid rematch.
2023-02-07 13:29:42 -08:00
parent fdd4a778fc
commit 2c8425998b
8 changed files with 24 additions and 50 deletions
--- a/cranelift/frontend/src/ssa.rs
+++ b/cranelift/frontend/src/ssa.rs
@@ -577,7 +577,7 @@ impl SSABuilder {
        dest_block: Block,
        val: Value,
    ) -> Option<(Block, Inst)> {
-        match func.dfg.insts[branch] {
+        match &func.dfg.insts[branch] {
            // For a single destination appending a jump argument to the instruction
            // is sufficient.
            InstructionData::Jump { .. } => {