From 9859e9a71dac94c9d7e52e3c025763db0462643f Mon Sep 17 00:00:00 2001 From: claziss Date: Mon, 8 Jan 2018 10:49:01 +0000 Subject: [PATCH] [ARC] Enable unaligned access. Use munaligned-access to control if we can have unaligned accesses. For ARC HS family unaligned access is always on. 2018-01-08 Claudiu Zissulescu * config/arc/arc-c.def (__ARC_UNALIGNED__): New define. * config/arc/arc.h (STRICT_ALIGNMENT): Control this macro using munaligned-access. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@256333 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 6 ++++++ gcc/config/arc/arc-c.def | 1 + gcc/config/arc/arc.h | 2 +- 3 files changed, 8 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index bcbb551f0536..75bf6b88e6b9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2018-01-08 Claudiu Zissulescu + + * config/arc/arc-c.def (__ARC_UNALIGNED__): New define. + * config/arc/arc.h (STRICT_ALIGNMENT): Control this macro using + munaligned-access. + 2018-01-08 Sebastian Huber PR target/83681 diff --git a/gcc/config/arc/arc-c.def b/gcc/config/arc/arc-c.def index bb7ba4ad2964..aefaeb443131 100644 --- a/gcc/config/arc/arc-c.def +++ b/gcc/config/arc/arc-c.def @@ -28,6 +28,7 @@ ARC_C_DEF ("__ARC_NORM__", TARGET_NORM) ARC_C_DEF ("__ARC_MUL64__", TARGET_MUL64_SET) ARC_C_DEF ("__ARC_MUL32BY16__", TARGET_MULMAC_32BY16_SET) ARC_C_DEF ("__ARC_SIMD__", TARGET_SIMD_SET) +ARC_C_DEF ("__ARC_UNALIGNED__", !STRICT_ALIGNMENT) ARC_C_DEF ("__ARC_BARREL_SHIFTER__", TARGET_BARREL_SHIFTER) diff --git a/gcc/config/arc/arc.h b/gcc/config/arc/arc.h index a04a3e9f1167..ae3d9c1c75b3 100644 --- a/gcc/config/arc/arc.h +++ b/gcc/config/arc/arc.h @@ -288,7 +288,7 @@ if (GET_MODE_CLASS (MODE) == MODE_INT \ /* On the ARC the lower address bits are masked to 0 as necessary. The chip won't croak when given an unaligned address, but the insn will still fail to produce the correct result. */ -#define STRICT_ALIGNMENT 1 +#define STRICT_ALIGNMENT (!unaligned_access && !TARGET_HS) /* Layout of source language data types. */ -- 2.39.2