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llvm-mirror/test/CodeGen/ARM/unwind-init.ll
Derek Schuff 4c429cad03 Make PrologEpilogInserter save/restore all callee saved registers
in functions which call __builtin_unwind_init()

__builtin_unwind_init() is an undocumented gcc intrinsic which has this effect,
and is used in libgcc_eh.

Goes part of the way toward fixing PR8541.

llvm-svn: 183984
2013-06-14 16:15:29 +00:00

19 lines
656 B
LLVM

; RUN: llc -mtriple=armv7-unknown-linux-gnueabi < %s | FileCheck %s
; Check that all callee-saved registers are saved and restored in functions
; that call __builtin_unwind_init(). This is its undocumented behavior in gcc,
; and it is used in compiling libgcc_eh.
; See also PR8541
declare void @llvm.eh.unwind.init()
define void @calls_unwind_init() {
call void @llvm.eh.unwind.init()
ret void
}
; CHECK: calls_unwind_init:
; CHECK: push {r4, r5, r6, r7, r8, r9, r10, r11, lr}
; CHECK: vpush {d8, d9, d10, d11, d12, d13, d14, d15}
; CHECK: vpop {d8, d9, d10, d11, d12, d13, d14, d15}
; CHECK: pop {r4, r5, r6, r7, r8, r9, r10, r11, pc}