mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-02-21 16:54:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

optimize AstGen.callExpr

Browse Source
This commit is contained in:
Lee Cannon 2021-10-31 15:06:55 +00:00 committed by Andrew Kelley
parent 8346e011c9
commit 83dcfd6205
1 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/AstGen.zig
View File

@ -7975,8 +7975,14 @@ fn callExpr(
const callee = try calleeExpr(gz, scope, call.ast.fn_expr);
const args = try astgen.gpa.alloc(Zir.Inst.Ref, call.ast.params.len);
defer astgen.gpa.free(args);
// A large proportion of calls have 5 or less arguments, due to this preventing allocations
// for calls with few arguments has a sizeable effect on the aggregated runtime of this function
var arg_buffer: [5]Zir.Inst.Ref = undefined;
const args: []Zir.Inst.Ref = if (call.ast.params.len <= arg_buffer.len)
arg_buffer[0..call.ast.params.len]
else
try astgen.gpa.alloc(Zir.Inst.Ref, call.ast.params.len);
defer if (call.ast.params.len > arg_buffer.len) astgen.gpa.free(args);
for (call.ast.params) |param_node, i| {
// Parameters are always temporary values, they have no