https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81907
Bug ID: 81907
Summary: undefined reference to `memset'
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: dongkyun.s at samsung dot com
Target Milestone: ---
Created attachment 42013
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42013&action=edit
memset_test
Compiling the attached source without memset trivial implementation,
Failed by undefined reference to `memset'
OPTFLAGS = -Os -g -mabi=aapcs -fno-function-sections -Wall -mfloat-abi=soft
-mtune=cortex-a9
Succeeded with option
OPTFLAGS = -Os -g -mabi=aapcs -fno-function-sections -Wall -mfloat-abi=soft
-mtune=cortex-a12
Using -O2 instead of -Os (Optimization level) also fix this fail.
What is different optimization behavior(implementation) in GCC between
cortex-a9 and cortex-a12 -given by mcpu or mtune option ?
Found related issue in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56888.
