do a better job of avoiding unnecessary GC roots in codegen

this removes stores and loads, and if we can reduce the number of roots in a function to zero we save significant overhead. ref #3440
JuliaLang · Jul 7, 2013 · ec3311a · ec3311a
1 parent b02ea62
commit ec3311a
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diff --git a/src/cgutils.cpp b/src/cgutils.cpp
@@ -484,7 +484,8 @@ static Value *julia_bool(Value *cond)
 
 // --- get the inferred type of an AST node ---
 
-static jl_value_t *static_eval(jl_value_t *ex, jl_codectx_t *ctx, bool sparams=true);
+static jl_value_t *static_eval(jl_value_t *ex, jl_codectx_t *ctx, bool sparams=true,
+                               bool allow_alloc=true);
 
 static inline jl_module_t *topmod(jl_codectx_t *ctx)
 {