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authorChristoph Muellner <christoph.muellner@theobroma-systems.com>2018-10-15 12:23:19 +0200
committerChristoph Muellner <christoph.muellner@theobroma-systems.com>2018-10-15 15:24:32 +0200
commitd61a062d5c3430d0b484bb1aacc8c77ae803ec5b (patch)
treef7f6b7d07dfced9e3525bcccf9b90456d868e94d
parent396334f56d14501c3ed14f3b8c3b2ad74eb5b1ed (diff)
funcse: Improve helper string for -funcse.
Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com>
-rw-r--r--gcc/common.opt4
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/common.opt b/gcc/common.opt
index 05e0fabe9013..6d98927fcc65 100644
--- a/gcc/common.opt
+++ b/gcc/common.opt
@@ -2584,7 +2584,9 @@ trailing array.
funcse
Common Report Var(flag_uncse) Init(0) Optimization
-Undoing of CSE
+Undoing of CSE (common subexpression elimination).
+This allows to merge the common subexpression into
+its consuming instruction.
funit-at-a-time
Common Report Var(flag_unit_at_a_time) Init(1)