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Reland "[ARM] __cxa_end_cleanup should be called instead of _UnwindResume."

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This is relanding commit da1d1a0869 .
This patch additionally addresses failures found in buildbots & post review comments.

ARM EHABI[1] specifies the __cxa_end_cleanup to be called after cleanup.
It will call the UnwindResume.
__cxa_begin_cleanup will be called from libcxxabi while __cxa_end_cleanup is never called.
This will trigger a termination when a foreign exception is processed while UnwindResume is called
because the global state will be wrong due to the missing __cxa_end_cleanup call.

Additional test here: D109856
[1] https://github.com/ARM-software/abi-aa/blob/main/ehabi32/ehabi32.rst#941compiler-helper-functions

Reviewed By: logan

Differential Revision: https://reviews.llvm.org/D111703
This commit is contained in:
Daniel Kiss 2021-10-27 10:32:11 +02:00
parent 93df7b9f75
commit d8075e8781
9 changed files with 158 additions and 106 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
libcxxabi/src/cxa_exception.cpp
View File

@ -341,8 +341,10 @@ unwinding with _Unwind_Resume.
According to ARM EHABI 8.4.1, __cxa_end_cleanup() should not clobber any
register, thus we have to write this function in assembly so that we can save
{r1, r2, r3}. We don't have to save r0 because it is the return value and the
first argument to _Unwind_Resume(). In addition, we are saving r4 in order to
align the stack to 16 bytes, even though it is a callee-save register.
first argument to _Unwind_Resume(). In addition, we are saving lr in order to
align the stack to 16 bytes and lr will be used to identify the caller and its
frame information. _Unwind_Resume never return and we need to keep the original
lr so just branch to it.
*/
__attribute__((used)) static _Unwind_Exception *
__cxa_end_cleanup_impl()
@ -372,18 +374,16 @@ __cxa_end_cleanup_impl()
return &exception_header->unwindHeader;
}
asm (
" .pushsection .text.__cxa_end_cleanup,\"ax\",%progbits\n"
asm(" .pushsection .text.__cxa_end_cleanup,\"ax\",%progbits\n"
" .globl __cxa_end_cleanup\n"
" .type __cxa_end_cleanup,%function\n"
"__cxa_end_cleanup:\n"
" push {r1, r2, r3, r4}\n"
" push {r1, r2, r3, lr}\n"
" bl __cxa_end_cleanup_impl\n"
" pop {r1, r2, r3, r4}\n"
" bl _Unwind_Resume\n"
" bl abort\n"
" .popsection"
);
" mov lr, r4\n"
" b _Unwind_Resume\n"
" .popsection");
#endif // defined(_LIBCXXABI_ARM_EHABI)
/*

13
llvm/include/llvm/ADT/Triple.h
View File

@ -721,6 +721,19 @@ public:
return getArch() == Triple::arm || getArch() == Triple::armeb;
}
/// Tests whether the target supports the EHABI exception
/// handling standard.
bool isTargetEHABICompatible() const {
return (isARM() || isThumb()) &&
(getEnvironment() == Triple::EABI ||
getEnvironment() == Triple::GNUEABI ||
getEnvironment() == Triple::MuslEABI ||
getEnvironment() == Triple::EABIHF ||
getEnvironment() == Triple::GNUEABIHF ||
getEnvironment() == Triple::MuslEABIHF || isAndroid()) &&
isOSBinFormatELF();
}
/// Tests whether the target is AArch64 (little and big endian).
bool isAArch64() const {
return getArch() == Triple::aarch64 || getArch() == Triple::aarch64_be ||

1
llvm/include/llvm/IR/RuntimeLibcalls.def
View File

@ -432,6 +432,7 @@ HANDLE_LIBCALL(MEMSET_ELEMENT_UNORDERED_ATOMIC_16, "__llvm_memset_element_unorde
// Exception handling
HANDLE_LIBCALL(UNWIND_RESUME, "_Unwind_Resume")
HANDLE_LIBCALL(CXA_END_CLEANUP, "__cxa_end_cleanup")
// Note: there are two sets of atomics libcalls; see
// <https://llvm.org/docs/Atomics.html> for more info on the

79
llvm/lib/CodeGen/DwarfEHPrepare.cpp
View File

@ -14,6 +14,7 @@
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Analysis/CFG.h"
#include "llvm/Analysis/DomTreeUpdater.h"
#include "llvm/Analysis/EHPersonalities.h"
@ -54,13 +55,11 @@ namespace {
class DwarfEHPrepare {
CodeGenOpt::Level OptLevel;
// RewindFunction - _Unwind_Resume or the target equivalent.
FunctionCallee &RewindFunction;
Function &F;
const TargetLowering &TLI;
DomTreeUpdater *DTU;
const TargetTransformInfo *TTI;
const Triple &TargetTriple;
/// Return the exception object from the value passed into
/// the 'resume' instruction (typically an aggregate). Clean up any dead
@ -78,11 +77,11 @@ class DwarfEHPrepare {
bool InsertUnwindResumeCalls();
public:
DwarfEHPrepare(CodeGenOpt::Level OptLevel_, FunctionCallee &RewindFunction_,
Function &F_, const TargetLowering &TLI_, DomTreeUpdater *DTU_,
const TargetTransformInfo *TTI_)
: OptLevel(OptLevel_), RewindFunction(RewindFunction_), F(F_), TLI(TLI_),
DTU(DTU_), TTI(TTI_) {}
DwarfEHPrepare(CodeGenOpt::Level OptLevel_, Function &F_,
const TargetLowering &TLI_, DomTreeUpdater *DTU_,
const TargetTransformInfo *TTI_, const Triple &TargetTriple_)
: OptLevel(OptLevel_), F(F_), TLI(TLI_), DTU(DTU_), TTI(TTI_),
TargetTriple(TargetTriple_) {}
bool run();
};
@ -211,13 +210,28 @@ bool DwarfEHPrepare::InsertUnwindResumeCalls() {
if (ResumesLeft == 0)
return true; // We pruned them all.
// Find the rewind function if we didn't already.
if (!RewindFunction) {
FunctionType *FTy =
// RewindFunction - _Unwind_Resume or the target equivalent.
FunctionCallee RewindFunction;
CallingConv::ID RewindFunctionCallingConv;
FunctionType *FTy;
const char *RewindName;
bool DoesRewindFunctionNeedExceptionObject;
if ((Pers == EHPersonality::GNU_CXX || Pers == EHPersonality::GNU_CXX_SjLj) &&
TargetTriple.isTargetEHABICompatible()) {
RewindName = TLI.getLibcallName(RTLIB::CXA_END_CLEANUP);
FTy = FunctionType::get(Type::getVoidTy(Ctx), false);
RewindFunctionCallingConv =
TLI.getLibcallCallingConv(RTLIB::CXA_END_CLEANUP);
DoesRewindFunctionNeedExceptionObject = false;
} else {
RewindName = TLI.getLibcallName(RTLIB::UNWIND_RESUME);
FTy =
FunctionType::get(Type::getVoidTy(Ctx), Type::getInt8PtrTy(Ctx), false);
const char *RewindName = TLI.getLibcallName(RTLIB::UNWIND_RESUME);
RewindFunction = F.getParent()->getOrInsertFunction(RewindName, FTy);
RewindFunctionCallingConv = TLI.getLibcallCallingConv(RTLIB::UNWIND_RESUME);
DoesRewindFunctionNeedExceptionObject = true;
}
RewindFunction = F.getParent()->getOrInsertFunction(RewindName, FTy);
// Create the basic block where the _Unwind_Resume call will live.
if (ResumesLeft == 1) {
@ -226,10 +240,14 @@ bool DwarfEHPrepare::InsertUnwindResumeCalls() {
ResumeInst *RI = Resumes.front();
BasicBlock *UnwindBB = RI->getParent();
Value *ExnObj = GetExceptionObject(RI);
llvm::SmallVector<Value *, 1> RewindFunctionArgs;
if (DoesRewindFunctionNeedExceptionObject)
RewindFunctionArgs.push_back(ExnObj);
// Call the _Unwind_Resume function.
CallInst *CI = CallInst::Create(RewindFunction, ExnObj, "", UnwindBB);
CI->setCallingConv(TLI.getLibcallCallingConv(RTLIB::UNWIND_RESUME));
// Call the rewind function.
CallInst *CI =
CallInst::Create(RewindFunction, RewindFunctionArgs, "", UnwindBB);
CI->setCallingConv(RewindFunctionCallingConv);
// We never expect _Unwind_Resume to return.
CI->setDoesNotReturn();
@ -240,6 +258,8 @@ bool DwarfEHPrepare::InsertUnwindResumeCalls() {
std::vector<DominatorTree::UpdateType> Updates;
Updates.reserve(Resumes.size());
llvm::SmallVector<Value *, 1> RewindFunctionArgs;
BasicBlock *UnwindBB = BasicBlock::Create(Ctx, "unwind_resume", &F);
PHINode *PN = PHINode::Create(Type::getInt8PtrTy(Ctx), ResumesLeft, "exn.obj",
UnwindBB);
@ -257,9 +277,13 @@ bool DwarfEHPrepare::InsertUnwindResumeCalls() {
++NumResumesLowered;
}
if (DoesRewindFunctionNeedExceptionObject)
RewindFunctionArgs.push_back(PN);
// Call the function.
CallInst *CI = CallInst::Create(RewindFunction, PN, "", UnwindBB);
CI->setCallingConv(TLI.getLibcallCallingConv(RTLIB::UNWIND_RESUME));
CallInst *CI =
CallInst::Create(RewindFunction, RewindFunctionArgs, "", UnwindBB);
CI->setCallingConv(RewindFunctionCallingConv);
// We never expect _Unwind_Resume to return.
CI->setDoesNotReturn();
@ -277,22 +301,20 @@ bool DwarfEHPrepare::run() {
return Changed;
}
static bool prepareDwarfEH(CodeGenOpt::Level OptLevel,
FunctionCallee &RewindFunction, Function &F,
static bool prepareDwarfEH(CodeGenOpt::Level OptLevel, Function &F,
const TargetLowering &TLI, DominatorTree *DT,
const TargetTransformInfo *TTI) {
const TargetTransformInfo *TTI,
const Triple &TargetTriple) {
DomTreeUpdater DTU(DT, DomTreeUpdater::UpdateStrategy::Lazy);
return DwarfEHPrepare(OptLevel, RewindFunction, F, TLI, DT ? &DTU : nullptr,
TTI)
return DwarfEHPrepare(OptLevel, F, TLI, DT ? &DTU : nullptr, TTI,
TargetTriple)
.run();
}
namespace {
class DwarfEHPrepareLegacyPass : public FunctionPass {
// RewindFunction - _Unwind_Resume or the target equivalent.
FunctionCallee RewindFunction = nullptr;
CodeGenOpt::Level OptLevel;
@ -315,12 +337,7 @@ public:
DT = &getAnalysis<DominatorTreeWrapperPass>().getDomTree();
TTI = &getAnalysis<TargetTransformInfoWrapperPass>().getTTI(F);
}
return prepareDwarfEH(OptLevel, RewindFunction, F, TLI, DT, TTI);
}
bool doFinalization(Module &M) override {
RewindFunction = nullptr;
return false;
return prepareDwarfEH(OptLevel, F, TLI, DT, TTI, TM.getTargetTriple());
}
void getAnalysisUsage(AnalysisUsage &AU) const override {

9
llvm/lib/Target/ARM/ARMSubtarget.h
View File

@ -792,14 +792,7 @@ public:
// ARM Targets that support EHABI exception handling standard
// Darwin uses SjLj. Other targets might need more checks.
bool isTargetEHABICompatible() const {
return (TargetTriple.getEnvironment() == Triple::EABI ||
TargetTriple.getEnvironment() == Triple::GNUEABI ||
TargetTriple.getEnvironment() == Triple::MuslEABI ||
TargetTriple.getEnvironment() == Triple::EABIHF ||
TargetTriple.getEnvironment() == Triple::GNUEABIHF ||
TargetTriple.getEnvironment() == Triple::MuslEABIHF ||
isTargetAndroid()) &&
!isTargetDarwin() && !isTargetWindows();
return TargetTriple.isTargetEHABICompatible();
}
bool isTargetHardFloat() const;

68
llvm/test/CodeGen/ARM/debug-frame.ll
View File

@ -197,29 +197,27 @@ declare void @_ZSt9terminatev()
; CHECK-V7-FP-LABEL: _Z4testiiiiiddddd:
; CHECK-V7-FP: .cfi_startproc
; CHECK-V7-FP: push {r4, r10, r11, lr}
; CHECK-V7-FP: .cfi_def_cfa_offset 16
; CHECK-V7-FP: push {r11, lr}
; CHECK-V7-FP: .cfi_def_cfa_offset 8
; CHECK-V7-FP: .cfi_offset lr, -4
; CHECK-V7-FP: .cfi_offset r11, -8
; CHECK-V7-FP: .cfi_offset r10, -12
; CHECK-V7-FP: .cfi_offset r4, -16
; CHECK-V7-FP: add r11, sp, #8
; CHECK-V7-FP: .cfi_def_cfa r11, 8
; CHECK-V7-FP: mov r11, sp
; CHECK-V7-FP: .cfi_def_cfa_register r11
; CHECK-V7-FP: vpush {d8, d9, d10, d11, d12}
; CHECK-V7-FP: .cfi_offset d12, -24
; CHECK-V7-FP: .cfi_offset d11, -32
; CHECK-V7-FP: .cfi_offset d10, -40
; CHECK-V7-FP: .cfi_offset d9, -48
; CHECK-V7-FP: .cfi_offset d8, -56
; CHECK-V7-FP: .cfi_offset d12, -16
; CHECK-V7-FP: .cfi_offset d11, -24
; CHECK-V7-FP: .cfi_offset d10, -32
; CHECK-V7-FP: .cfi_offset d9, -40
; CHECK-V7-FP: .cfi_offset d8, -48
; CHECK-V7-FP: sub sp, sp, #24
; CHECK-V7-FP: .cfi_endproc
; CHECK-V7-FP-ELIM-LABEL: _Z4testiiiiiddddd:
; CHECK-V7-FP-ELIM: .cfi_startproc
; CHECK-V7-FP-ELIM: push {r4, lr}
; CHECK-V7-FP-ELIM: push {r11, lr}
; CHECK-V7-FP-ELIM: .cfi_def_cfa_offset 8
; CHECK-V7-FP-ELIM: .cfi_offset lr, -4
; CHECK-V7-FP-ELIM: .cfi_offset r4, -8
; CHECK-V7-FP-ELIM: .cfi_offset r11, -8
; CHECK-V7-FP-ELIM: vpush {d8, d9, d10, d11, d12}
; CHECK-V7-FP-ELIM: .cfi_def_cfa_offset 48
; CHECK-V7-FP-ELIM: .cfi_offset d12, -16
@ -260,29 +258,27 @@ declare void @_ZSt9terminatev()
; CHECK-THUMB-V7-FP-LABEL: _Z4testiiiiiddddd:
; CHECK-THUMB-V7-FP: .cfi_startproc
; CHECK-THUMB-V7-FP: push {r4, r6, r7, lr}
; CHECK-THUMB-V7-FP: .cfi_def_cfa_offset 16
; CHECK-THUMB-V7-FP: push {r7, lr}
; CHECK-THUMB-V7-FP: .cfi_def_cfa_offset 8
; CHECK-THUMB-V7-FP: .cfi_offset lr, -4
; CHECK-THUMB-V7-FP: .cfi_offset r7, -8
; CHECK-THUMB-V7-FP: .cfi_offset r6, -12
; CHECK-THUMB-V7-FP: .cfi_offset r4, -16
; CHECK-THUMB-V7-FP: add r7, sp, #8
; CHECK-THUMB-V7-FP: .cfi_def_cfa r7, 8
; CHECK-THUMB-V7-FP: mov r7, sp
; CHECK-THUMB-V7-FP: .cfi_def_cfa_register r7
; CHECK-THUMB-V7-FP: vpush {d8, d9, d10, d11, d12}
; CHECK-THUMB-V7-FP: .cfi_offset d12, -24
; CHECK-THUMB-V7-FP: .cfi_offset d11, -32
; CHECK-THUMB-V7-FP: .cfi_offset d10, -40
; CHECK-THUMB-V7-FP: .cfi_offset d9, -48
; CHECK-THUMB-V7-FP: .cfi_offset d8, -56
; CHECK-THUMB-V7-FP: .cfi_offset d12, -16
; CHECK-THUMB-V7-FP: .cfi_offset d11, -24
; CHECK-THUMB-V7-FP: .cfi_offset d10, -32
; CHECK-THUMB-V7-FP: .cfi_offset d9, -40
; CHECK-THUMB-V7-FP: .cfi_offset d8, -48
; CHECK-THUMB-V7-FP: sub sp, #24
; CHECK-THUMB-V7-FP: .cfi_endproc
; CHECK-THUMB-V7-FP-ELIM-LABEL: _Z4testiiiiiddddd:
; CHECK-THUMB-V7-FP-ELIM: .cfi_startproc
; CHECK-THUMB-V7-FP-ELIM: push {r4, lr}
; CHECK-THUMB-V7-FP-ELIM: push {r7, lr}
; CHECK-THUMB-V7-FP-ELIM: .cfi_def_cfa_offset 8
; CHECK-THUMB-V7-FP-ELIM: .cfi_offset lr, -4
; CHECK-THUMB-V7-FP-ELIM: .cfi_offset r4, -8
; CHECK-THUMB-V7-FP-ELIM: .cfi_offset r7, -8
; CHECK-THUMB-V7-FP-ELIM: vpush {d8, d9, d10, d11, d12}
; CHECK-THUMB-V7-FP-ELIM: .cfi_def_cfa_offset 48
; CHECK-THUMB-V7-FP-ELIM: .cfi_offset d12, -16
@ -296,20 +292,18 @@ declare void @_ZSt9terminatev()
; CHECK-THUMB-V7-FP-NOIAS-LABEL: _Z4testiiiiiddddd:
; CHECK-THUMB-V7-FP-NOIAS: .cfi_startproc
; CHECK-THUMB-V7-FP-NOIAS: push {r4, r6, r7, lr}
; CHECK-THUMB-V7-FP-NOIAS: .cfi_def_cfa_offset 16
; CHECK-THUMB-V7-FP-NOIAS: push {r7, lr}
; CHECK-THUMB-V7-FP-NOIAS: .cfi_def_cfa_offset 8
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 14, -4
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 7, -8
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 6, -12
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 4, -16
; CHECK-THUMB-V7-FP-NOIAS: add r7, sp, #8
; CHECK-THUMB-V7-FP-NOIAS: .cfi_def_cfa 7, 8
; CHECK-THUMB-V7-FP-NOIAS: mov r7, sp
; CHECK-THUMB-V7-FP-NOIAS: .cfi_def_cfa_register 7
; CHECK-THUMB-V7-FP-NOIAS: vpush {d8, d9, d10, d11, d12}
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 268, -24
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 267, -32
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 266, -40
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 265, -48
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 264, -56
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 268, -16
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 267, -24
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 266, -32
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 265, -40
; CHECK-THUMB-V7-FP-NOIAS: .cfi_offset 264, -48
; CHECK-THUMB-V7-FP-NOIAS: sub sp, #24
; CHECK-THUMB-V7-FP-NOIAS: .cfi_endproc

4
llvm/test/CodeGen/ARM/eh-resume-darwin.ll → llvm/test/CodeGen/ARM/eh-resume.ll
View File

@ -2,6 +2,8 @@
; RUN: llc < %s -mtriple=armv7-apple-watchos -arm-atomic-cfg-tidy=0 | FileCheck %s -check-prefix=IOS
; RUN: llc < %s -mtriple=armv7k-apple-ios -arm-atomic-cfg-tidy=0 | FileCheck %s -check-prefix=WATCHABI
; RUN: llc < %s -mtriple=armv7k-apple-watchos -arm-atomic-cfg-tidy=0 | FileCheck %s -check-prefix=WATCHABI
; RUN: llc < %s -mtriple=armv7-none-gnueabihf -arm-atomic-cfg-tidy=0 | FileCheck %s -check-prefix=EABI
; RUN: llc < %s -mtriple=armv7-none-none -arm-atomic-cfg-tidy=0 | FileCheck %s -check-prefix=ABI
declare void @func()
@ -23,3 +25,5 @@ lpad:
; IOS: __Unwind_SjLj_Resume
; WATCHABI: __Unwind_Resume
; EABI: __cxa_end_cleanup
; ABI: _Unwind_Resume

32
llvm/test/CodeGen/ARM/eh-resume2.ll Normal file
View File

@ -0,0 +1,32 @@
; RUN: llc < %s -mtriple=armv7-apple-ios -arm-atomic-cfg-tidy=0 | FileCheck %s -check-prefix=IOS
; RUN: llc < %s -mtriple=armv7-apple-watchos -arm-atomic-cfg-tidy=0 | FileCheck %s -check-prefix=IOS
; RUN: llc < %s -mtriple=armv7k-apple-ios -arm-atomic-cfg-tidy=0 | FileCheck %s -check-prefix=WATCHABI
; RUN: llc < %s -mtriple=armv7k-apple-watchos -arm-atomic-cfg-tidy=0 | FileCheck %s -check-prefix=WATCHABI
; RUN: llc < %s -mtriple=armv7-none-gnueabihf -arm-atomic-cfg-tidy=0 | FileCheck %s -check-prefix=EABI
; RUN: llc < %s -mtriple=armv7-none-none -arm-atomic-cfg-tidy=0 | FileCheck %s -check-prefix=ABI
; ARM EABI for C++/__gxx_personality* specifies __cxa_end_cleanup, but for C code / __gcc_personality*
; the _Unwind_Resume is required.
declare void @func()
declare i32 @__gcc_personality_v0(...)
define void @test0() personality i8* bitcast (i32 (...)* @__gcc_personality_v0 to i8*) {
entry:
invoke void @func()
to label %cont unwind label %lpad
cont:
ret void
lpad:
%exn = landingpad { i8*, i32 }
cleanup
resume { i8*, i32 } %exn
}
; IOS: __Unwind_SjLj_Resume
; WATCHABI: __Unwind_Resume
; EABI: _Unwind_Resume
; ABI: _Unwind_Resume

40
llvm/test/CodeGen/ARM/ehabi.ll
View File

@ -181,10 +181,10 @@ declare void @_ZSt9terminatev()
; CHECK-V7-FP-LABEL: _Z4testiiiiiddddd:
; CHECK-V7-FP: .fnstart
; CHECK-V7-FP: .save {r4, r10, r11, lr}
; CHECK-V7-FP: push {r4, r10, r11, lr}
; CHECK-V7-FP: .setfp r11, sp, #8
; CHECK-V7-FP: add r11, sp, #8
; CHECK-V7-FP: .save {r11, lr}
; CHECK-V7-FP: push {r11, lr}
; CHECK-V7-FP: .setfp r11, sp
; CHECK-V7-FP: mov r11, sp
; CHECK-V7-FP: .vsave {d8, d9, d10, d11, d12}
; CHECK-V7-FP: vpush {d8, d9, d10, d11, d12}
; CHECK-V7-FP: .pad #24
@ -195,8 +195,8 @@ declare void @_ZSt9terminatev()
; CHECK-V7-FP-ELIM-LABEL: _Z4testiiiiiddddd:
; CHECK-V7-FP-ELIM: .fnstart
; CHECK-V7-FP-ELIM: .save {r4, lr}
; CHECK-V7-FP-ELIM: push {r4, lr}
; CHECK-V7-FP-ELIM: .save {r11, lr}
; CHECK-V7-FP-ELIM: push {r11, lr}
; CHECK-V7-FP-ELIM: .vsave {d8, d9, d10, d11, d12}
; CHECK-V7-FP-ELIM: vpush {d8, d9, d10, d11, d12}
; CHECK-V7-FP-ELIM: .pad #24
@ -254,33 +254,31 @@ declare void @_ZSt9terminatev()
; DWARF-V7-FP: .cfi_startproc
; DWARF-V7-FP: .cfi_personality 0, __gxx_personality_v0
; DWARF-V7-FP: .cfi_lsda 0, .Lexception0
; DWARF-V7-FP: push {r4, r10, r11, lr}
; DWARF-V7-FP: .cfi_def_cfa_offset 16
; DWARF-V7-FP: push {r11, lr}
; DWARF-V7-FP: .cfi_def_cfa_offset 8
; DWARF-V7-FP: .cfi_offset lr, -4
; DWARF-V7-FP: .cfi_offset r11, -8
; DWARF-V7-FP: .cfi_offset r10, -12
; DWARF-V7-FP: .cfi_offset r4, -16
; DWARF-V7-FP: add r11, sp, #8
; DWARF-V7-FP: .cfi_def_cfa r11, 8
; DWARF-V7-FP: mov r11, sp
; DWARF-V7-FP: .cfi_def_cfa_register r11
; DWARF-V7-FP: vpush {d8, d9, d10, d11, d12}
; DWARF-V7-FP: .cfi_offset d12, -24
; DWARF-V7-FP: .cfi_offset d11, -32
; DWARF-V7-FP: .cfi_offset d10, -40
; DWARF-V7-FP: .cfi_offset d9, -48
; DWARF-V7-FP: .cfi_offset d12, -16
; DWARF-V7-FP: .cfi_offset d11, -24
; DWARF-V7-FP: .cfi_offset d10, -32
; DWARF-V7-FP: .cfi_offset d9, -40
; DWARF-V7-FP: sub sp, sp, #24
; DWARF-V7-FP: sub sp, r11, #48
; DWARF-V7-FP: sub sp, r11, #40
; DWARF-V7-FP: vpop {d8, d9, d10, d11, d12}
; DWARF-V7-FP: pop {r4, r10, r11, pc}
; DWARF-V7-FP: pop {r11, pc}
; DWARF-V7-FP: .cfi_endproc
; DWARF-V7-FP-ELIM-LABEL: _Z4testiiiiiddddd:
; DWARF-V7-FP-ELIM: .cfi_startproc
; DWARF-V7-FP-ELIM: .cfi_personality 0, __gxx_personality_v0
; DWARF-V7-FP-ELIM: .cfi_lsda 0, .Lexception0
; DWARF-V7-FP-ELIM: push {r4, lr}
; DWARF-V7-FP-ELIM: push {r11, lr}
; DWARF-V7-FP-ELIM: .cfi_def_cfa_offset 8
; DWARF-V7-FP-ELIM: .cfi_offset lr, -4
; DWARF-V7-FP-ELIM: .cfi_offset r4, -8
; DWARF-V7-FP-ELIM: .cfi_offset r11, -8
; DWARF-V7-FP-ELIM: vpush {d8, d9, d10, d11, d12}
; DWARF-V7-FP-ELIM: .cfi_offset d12, -16
; DWARF-V7-FP-ELIM: .cfi_offset d11, -24
@ -290,7 +288,7 @@ declare void @_ZSt9terminatev()
; DWARF-V7-FP-ELIM: .cfi_def_cfa_offset 72
; DWARF-V7-FP-ELIM: add sp, sp, #24
; DWARF-V7-FP-ELIM: vpop {d8, d9, d10, d11, d12}
; DWARF-V7-FP-ELIM: pop {r4, pc}
; DWARF-V7-FP-ELIM: pop {r11, pc}
; DWARF-V7-FP-ELIM: .cfi_endproc
; DWARF-WIN-FP-ELIM-LABEL: _Z4testiiiiiddddd: