From c01810eeb7227010f73cb39e3c4fa0197a3c4ef0 Mon Sep 17 00:00:00 2001 From: Jim Grosbach Date: Tue, 28 Feb 2012 23:53:30 +0000 Subject: ARM implement TargetInstrInfo::getNoopForMachoTarget() Without this hook, functions w/ a completely empty body (including no epilogue) will cause an MCEmitter assertion failure. For example, define internal fastcc void @empty_function() { unreachable } rdar://10947471 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151673 91177308-0d34-0410-b5e6-96231b3b80d8 --- test/MC/MachO/ARM/empty-function-nop.ll | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 test/MC/MachO/ARM/empty-function-nop.ll (limited to 'test/MC/MachO') diff --git a/test/MC/MachO/ARM/empty-function-nop.ll b/test/MC/MachO/ARM/empty-function-nop.ll new file mode 100644 index 0000000000..3ac4d82afa --- /dev/null +++ b/test/MC/MachO/ARM/empty-function-nop.ll @@ -0,0 +1,15 @@ +; RUN: llc < %s -filetype=obj -mtriple=thumbv6-apple-darwin -o - | macho-dump -dump-section-data | FileCheck -prefix=T1 +; RUN: llc < %s -filetype=obj -mtriple=thumbv7-apple-darwin -o - | macho-dump -dump-section-data | FileCheck -prefix=T2 +; RUN: llc < %s -filetype=obj -mtriple=armv6-apple-darwin -o - | macho-dump -dump-section-data | FileCheck -prefix=ARM +; RUN: llc < %s -filetype=obj -mtriple=armv7-apple-darwin -o - | macho-dump -dump-section-data | FileCheck -prefix=ARMV7 + +; Empty functions need a NOP in them for MachO to prevent DWARF FDEs from +; getting all mucked up. See lib/CodeGen/AsmPrinter/AsmPrinter.cpp for +; details. +define internal fastcc void @empty_function() { + unreachable +} +; CHECK-T1: ('_section_data', 'c046') +; CHECK-T2: ('_section_data', '00bf') +; CHECK-ARM: ('_section_data', '0000a0e1') +; CHECK-ARMV7: ('_section_data', '00f020e3') -- cgit v1.2.3