Update default codegen-units

It's been 16 since rustc 1.24.

diff --git a/src/doc/src/reference/manifest.md b/src/doc/src/reference/manifest.md
index 1c15ac457e012830c4dcc4bf5627a87a70ff2e4b..117cd373c4be78405943fdf9690072e4c9e5997a 100644 (file)
--- a/src/doc/src/reference/manifest.md
+++ b/src/doc/src/reference/manifest.md
@@ -299,7 +299,7 @@ lto = false        # Link Time Optimization usually reduces size of binaries
                    # be passed
 debug-assertions = true # controls whether debug assertions are enabled
                    # (e.g. debug_assert!() and arithmetic overflow checks)
-codegen-units = 1  # if > 1 enables parallel code generation which improves
+codegen-units = 16 # if > 1 enables parallel code generation which improves
                    # compile times, but prevents some optimizations.
                    # Passes `-C codegen-units`.
 panic = 'unwind'   # panic strategy (`-C panic=...`), can also be 'abort'
@@ -314,7 +314,7 @@ debug = false
 rpath = false
 lto = false
 debug-assertions = false
-codegen-units = 1
+codegen-units = 16
 panic = 'unwind'
 incremental = false
 overflow-checks = false
@@ -326,7 +326,7 @@ debug = 2
 rpath = false
 lto = false
 debug-assertions = true
-codegen-units = 1
+codegen-units = 16
 panic = 'unwind'
 incremental = true
 overflow-checks = true
@@ -338,7 +338,7 @@ debug = false
 rpath = false
 lto = false
 debug-assertions = false
-codegen-units = 1
+codegen-units = 16
 panic = 'unwind'
 incremental = false
 overflow-checks = false
@@ -350,7 +350,7 @@ debug = 2
 rpath = false
 lto = false
 debug-assertions = true
-codegen-units = 1
+codegen-units = 16
 panic = 'unwind'
 incremental = true
 overflow-checks = true