From a87024da0e4d79a05ad3485b79addfbcbe017ed5 Mon Sep 17 00:00:00 2001
From: Tim Besard <tim.besard@gmail.com>
Date: Tue, 20 Oct 2020 15:10:58 +0200
Subject: [PATCH] Don't print identical compiler invocations during reflection.

---
 src/reflection.jl | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/reflection.jl b/src/reflection.jl
index 1e20c3b0..605c45e4 100644
--- a/src/reflection.jl
+++ b/src/reflection.jl
@@ -127,10 +127,12 @@ function emit_hooked_compilation(inner_hook, ex...)
     user_code = ex[end]
     user_kwargs = ex[1:end-1]
     quote
-        local kernels = 0
+        local kernels = Set()
         function outer_hook(job)
-            kernels += 1
-            $inner_hook(job; $(map(esc, user_kwargs)...))
+            if !in(job, kernels)
+                $inner_hook(job; $(map(esc, user_kwargs)...))
+                push!(kernels, job)
+            end
         end
 
         if GPUCompiler.compile_hook[] !== nothing
@@ -143,7 +145,7 @@ function emit_hooked_compilation(inner_hook, ex...)
             GPUCompiler.compile_hook[] = nothing
         end
 
-        if kernels == 0
+        if isempty(kernels)
             error("no kernels executed while evaluating the given expression")
         end