From 5355f9ca7b10183ce06e8a18003ba30f43774858 Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Thu, 6 Oct 2022 12:35:35 -0300 Subject: elf: Remove -fno-tree-loop-distribute-patterns usage on dl-support Besides the option being gcc specific, this approach is still fragile and not future proof since we do not know if this will be the only optimization option gcc will add that transforms loops to memset (or any libcall). This patch adds a new header, dl-symbol-redir-ifunc.h, that can b used to redirect the compiler generated libcalls to port the generic memset implementation if required. Checked on x86_64-linux-gnu and aarch64-linux-gnu. Reviewed-by: Carlos O'Donell --- elf/Makefile | 5 ----- 1 file changed, 5 deletions(-) (limited to 'elf/Makefile') diff --git a/elf/Makefile b/elf/Makefile index 276343a47f..7b50ccc07a 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -162,11 +162,6 @@ ifeq (yes,$(have-loop-to-function)) CFLAGS-rtld.c += -fno-tree-loop-distribute-patterns endif -ifeq (yes,$(have-loop-to-function)) -# Likewise, during static library startup, memset is not yet available. -CFLAGS-dl-support.c = -fno-tree-loop-distribute-patterns -endif - # Compile rtld itself without stack protection. # Also compile all routines in the static library that are elided from # the shared libc because they are in libc.a in the same way. -- cgit v1.2.3