From d965bb613086cd780cf73418bcdeaef50a9afc55 Mon Sep 17 00:00:00 2001 From: Austin Clements Date: Fri, 20 Mar 2020 11:37:54 -0400 Subject: runtime: use divRoundUp There are a handful of places where the runtime wants to round up the result of a division. We just introduced a helper to do this. This CL replaces all of the hand-coded round-ups (that I could find) with this helper. Change-Id: I465d152157ff0f3cad40c0aa57491e4f2de510ad Reviewed-on: https://go-review.googlesource.com/c/go/+/224385 Run-TryBot: Austin Clements TryBot-Result: Gobot Gobot Reviewed-by: Cherry Zhang --- src/runtime/malloc.go | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/runtime/malloc.go') diff --git a/src/runtime/malloc.go b/src/runtime/malloc.go index 483ea0aee5..346d7f4742 100644 --- a/src/runtime/malloc.go +++ b/src/runtime/malloc.go @@ -1035,9 +1035,9 @@ func mallocgc(size uintptr, typ *_type, needzero bool) unsafe.Pointer { } else { var sizeclass uint8 if size <= smallSizeMax-8 { - sizeclass = size_to_class8[(size+smallSizeDiv-1)/smallSizeDiv] + sizeclass = size_to_class8[divRoundUp(size, smallSizeDiv)] } else { - sizeclass = size_to_class128[(size-smallSizeMax+largeSizeDiv-1)/largeSizeDiv] + sizeclass = size_to_class128[divRoundUp(size-smallSizeMax, largeSizeDiv)] } size = uintptr(class_to_size[sizeclass]) spc := makeSpanClass(sizeclass, noscan) -- cgit v1.3