From fe21981989da4979aa83770ed14b68d4e586c87a Mon Sep 17 00:00:00 2001
From: Weiming Zhao <weimingz@codeaurora.org>
Date: Mon, 6 Feb 2017 06:04:10 +0000
Subject: [Builtin][ARM] Implement addsf3/__aeabi_fadd for Thumb1

Summary:
This patch implements addsf3/__aeabi_fadd in asm for Thumb1.
Compared with generic C version (lib/fp_add_impl.inc), it
1. all constants are materialized instead of loading from constant pool
2. no stack spills (C version uses 136 bytes stack space)
3. clz() is called only when necessary. (C version always calls it)

Reviewers: compnerd, rengolin, asl

Reviewed By: asl

Subscribers: efriedma, aemerson, mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D29485

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@294172 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/builtins/CMakeLists.txt | 1 +
 1 file changed, 1 insertion(+)

(limited to 'lib/builtins/CMakeLists.txt')

diff --git a/lib/builtins/CMakeLists.txt b/lib/builtins/CMakeLists.txt
index 939e40946..fc4384af2 100644
--- a/lib/builtins/CMakeLists.txt
+++ b/lib/builtins/CMakeLists.txt
@@ -306,6 +306,7 @@ set(thumb1_SOURCES
   arm/divsi3.S
   arm/udivsi3.S
   arm/comparesf2.S
+  arm/addsf3.S
   ${GENERIC_SOURCES})
 
 set(arm_EABI_SOURCES
-- 
cgit v1.2.3