[PATCH v2 2/2] doc: document the debug flags

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The flags -ventry & -vdead were not documented.
Fix this now by adding a small explanation.

Reviewed-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
---
 Documentation/dev-options.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/dev-options.md b/Documentation/dev-options.md
index 23ea21330..7c278135a 100644
--- a/Documentation/dev-options.md
+++ b/Documentation/dev-options.md
@@ -26,3 +26,9 @@ document options only useful for development on sparse itself.
   * 'linearize'
   * 'mem2reg'
   * 'final'
+
+* '-v<debug-flag>'
+
+  Add or display some debug info. The flag can be one of:
+  * 'dead': annotate dead pseudos.
+  * 'entry': dump the IR after all optimization passes.
-- 
2.16.2

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