move TLDR upwards

README.md

@@ -10,6 +10,24 @@ The test
 Compiles 64 small binaries with [bazel-zig-cc][1] and [llvm14][2]. The tests
 were run on an x86_64 8-core machine running Ubuntu 22.04.
 
+TLDR
+----
+
+Extracting the fastest meaningful benchmarks in all categories (from the
+section below):
+
+                                  'bazel build                                                                             --experimental_reuse_sandbox_directories //...' ran
+    2.77 ± 0.08 times faster than 'bazel build --extra_toolchains=@llvm_toolchain_with_sysroot//:cc-toolchain-x86_64-linux --experimental_reuse_sandbox_directories //...'
+    2.85 ± 0.07 times faster than 'bazel build --platforms=@zig_sdk//libc_aware/platform:linux_amd64_gnu.2.28              --experimental_reuse_sandbox_directories //...'
+
+This demonstrates that **adding a hermetic toolchain to a project caused 177%
+slowdown on this project**. Note that we are not counting `llvm_toolchain//...`
+as a real toolchain -- one needs a sysroot to compile anything meaningful
+anyway (which zig bundles with the compiler).
+
+Once we have determined that a hermetic C++ toolchain is required, bazel-zig-cc
+is about 2.8% slower than its contender plain llvm14.
+
 Results
 -------
 
@@ -105,21 +123,6 @@ Explanation:
   recommended with both bazel-zig-cc and a nontrivial sysroot. As a result,
   this is the most important benchmark to look at.
 
-
-Extracting the fastest meaningful benchmarks in all categories:
-
-                                  'bazel build                                                                             --experimental_reuse_sandbox_directories //...' ran
-    2.77 ± 0.08 times faster than 'bazel build --extra_toolchains=@llvm_toolchain_with_sysroot//:cc-toolchain-x86_64-linux --experimental_reuse_sandbox_directories //...'
-    2.85 ± 0.07 times faster than 'bazel build --platforms=@zig_sdk//libc_aware/platform:linux_amd64_gnu.2.28              --experimental_reuse_sandbox_directories //...'
-
-This demonstrates that **adding a hermetic toolchain to a project caused 177%
-slowdown on this project**. Note that we are not counting `llvm_toolchain//...`
-as a real toolchain -- one needs a sysroot to compile anything meaningful
-anyway (which zig bundles with the compiler).
-
-Once we have determined that a hermetic C++ toolchain is required, bazel-zig-cc
-is about 2.8% slower than its contender plain llvm14.
-
 Flame graphs and discussion
 ---------------------------