From 8b30f9854ed22cb39b4ac0e939f3bbaff7caad7e Mon Sep 17 00:00:00 2001
From: Saleem Abdulrasool <compnerd@compnerd.org>
Date: Thu, 10 Mar 2016 15:11:09 +0000
Subject: ARM: correct __builtin_longjmp on WoA

WoA uses r11 as the FP even though it is a pure thumb-2 environment in contrast
to AAPCS which states r7.  This adjusts __builtin_longjmp to not clobber r7 and
to properly restore the frame pointer on execution.

llvm-svn: 263118
---
 llvm/test/CodeGen/ARM/Windows/builtin_longjmp.ll | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 llvm/test/CodeGen/ARM/Windows/builtin_longjmp.ll

(limited to 'llvm/test')

diff --git a/llvm/test/CodeGen/ARM/Windows/builtin_longjmp.ll b/llvm/test/CodeGen/ARM/Windows/builtin_longjmp.ll
new file mode 100644
index 00000000000..d16b44f3d8a
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/Windows/builtin_longjmp.ll
@@ -0,0 +1,16 @@
+; RUN: llc -mtriple thumbv7--windows-itanium -filetype asm -o - %s | FileCheck %s
+
+declare void @llvm.eh.sjlj.longjmp(i8*)
+
+define arm_aapcs_vfpcc void @test___builtin_longjump(i8* %b) {
+entry:
+  tail call void @llvm.eh.sjlj.longjmp(i8* %b)
+  unreachable
+}
+
+; CHECK: ldr     r[[SP:[0-9]+]], [r0, #8]
+; CHECK: mov     sp, r[[SP]]
+; CHECK: ldr     r[[PC:[0-9]+]], [r0, #4]
+; CHECK: ldr     r11, [r0]
+; CHECK: bx      r[[PC]]
+
-- 
cgit v1.2.3