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cmd/gc: get rid of redundant slice bound check.

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For normal slices a[i:j] we're generating 3 bounds
checks: j<={len(string),cap(slice)}, j<=j (!), and i<=j.
Somehow snuck in as part of the [i:j:k] implementation
where the second check does something.
Remove the second check when we don't need it.

R=rsc, r
CC=golang-dev
https://golang.org/cl/12311046
This commit is contained in:
Keith Randall 2013-08-05 13:24:33 -07:00
parent 49da9a8e44
commit 19e2922688
1 changed files with 1 additions and 1 deletions
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2
src/cmd/gc/walk.c
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@ -2623,7 +2623,7 @@ sliceany(Node* n, NodeList **init)
cb = n->right->right->right; cb = n->right->right->right;
} else { } else {
hb = n->right->right; hb = n->right->right;
cb = hb; cb = N;
} }
bounded = n->etype; bounded = n->etype;