[llvm] r345791 - [COFF, ARM64] Implement Intrinsic.sponentry for AArch64
Mandeep Singh Grang via llvm-commits
llvm-commits at lists.llvm.org
Wed Oct 31 16:16:21 PDT 2018
Author: mgrang
Date: Wed Oct 31 16:16:20 2018
New Revision: 345791
URL: http://llvm.org/viewvc/llvm-project?rev=345791&view=rev
Log:
[COFF, ARM64] Implement Intrinsic.sponentry for AArch64
Summary: This patch adds Intrinsic.sponentry. This intrinsic is required to correctly support setjmp for AArch64 Windows platform.
Reviewers: mgrang, TomTan, rnk, compnerd, mstorsjo, efriedma
Reviewed By: efriedma
Subscribers: majnemer, chrib, javed.absar, kristof.beyls, llvm-commits
Differential Revision: https://reviews.llvm.org/D53673
Added:
llvm/trunk/test/CodeGen/AArch64/sponentry.ll
Modified:
llvm/trunk/docs/LangRef.rst
llvm/trunk/include/llvm/CodeGen/ISDOpcodes.h
llvm/trunk/include/llvm/IR/Intrinsics.td
llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
llvm/trunk/lib/Target/AArch64/AArch64FastISel.cpp
llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp
llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.h
Modified: llvm/trunk/docs/LangRef.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/LangRef.rst?rev=345791&r1=345790&r2=345791&view=diff
==============================================================================
--- llvm/trunk/docs/LangRef.rst (original)
+++ llvm/trunk/docs/LangRef.rst Wed Oct 31 16:16:20 2018
@@ -2926,7 +2926,7 @@ Simple Constants
hexadecimal notation (see below). The assembler requires the exact
decimal value of a floating-point constant. For example, the
assembler accepts 1.25 but rejects 1.3 because 1.3 is a repeating
- decimal in binary. Floating-point constants must have a
+ decimal in binary. Floating-point constants must have a
:ref:`floating-point <t_floating>` type.
**Null pointer constants**
The identifier '``null``' is recognized as a null pointer constant
@@ -3331,7 +3331,7 @@ The following is the syntax for constant
value won't fit in the integer type, the result is a
:ref:`poison value <poisonvalues>`.
``uitofp (CST to TYPE)``
- Convert an unsigned integer constant to the corresponding
+ Convert an unsigned integer constant to the corresponding
floating-point constant. TYPE must be a scalar or vector floating-point
type. CST must be of scalar or vector integer type. Both CST and TYPE must
be scalars, or vectors of the same number of elements.
@@ -5434,7 +5434,7 @@ Irreducible loop header weights are typi
'``invariant.group``' Metadata
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-The experimental ``invariant.group`` metadata may be attached to
+The experimental ``invariant.group`` metadata may be attached to
``load``/``store`` instructions referencing a single metadata with no entries.
The existence of the ``invariant.group`` metadata on the instruction tells
the optimizer that every ``load`` and ``store`` to the same pointer operand
@@ -6875,7 +6875,7 @@ Arguments:
""""""""""
The two arguments to the '``fadd``' instruction must be
-:ref:`floating-point <t_floating>` or :ref:`vector <t_vector>` of
+:ref:`floating-point <t_floating>` or :ref:`vector <t_vector>` of
floating-point values. Both arguments must have identical types.
Semantics:
@@ -6883,7 +6883,7 @@ Semantics:
The value produced is the floating-point sum of the two operands.
This instruction is assumed to execute in the default :ref:`floating-point
-environment <floatenv>`.
+environment <floatenv>`.
This instruction can also take any number of :ref:`fast-math
flags <fastmath>`, which are optimization hints to enable otherwise
unsafe floating-point optimizations:
@@ -6972,7 +6972,7 @@ Arguments:
""""""""""
The two arguments to the '``fsub``' instruction must be
-:ref:`floating-point <t_floating>` or :ref:`vector <t_vector>` of
+:ref:`floating-point <t_floating>` or :ref:`vector <t_vector>` of
floating-point values. Both arguments must have identical types.
Semantics:
@@ -6980,7 +6980,7 @@ Semantics:
The value produced is the floating-point difference of the two operands.
This instruction is assumed to execute in the default :ref:`floating-point
-environment <floatenv>`.
+environment <floatenv>`.
This instruction can also take any number of :ref:`fast-math
flags <fastmath>`, which are optimization hints to enable otherwise
unsafe floating-point optimizations:
@@ -7067,7 +7067,7 @@ Arguments:
""""""""""
The two arguments to the '``fmul``' instruction must be
-:ref:`floating-point <t_floating>` or :ref:`vector <t_vector>` of
+:ref:`floating-point <t_floating>` or :ref:`vector <t_vector>` of
floating-point values. Both arguments must have identical types.
Semantics:
@@ -7075,7 +7075,7 @@ Semantics:
The value produced is the floating-point product of the two operands.
This instruction is assumed to execute in the default :ref:`floating-point
-environment <floatenv>`.
+environment <floatenv>`.
This instruction can also take any number of :ref:`fast-math
flags <fastmath>`, which are optimization hints to enable otherwise
unsafe floating-point optimizations:
@@ -7201,7 +7201,7 @@ Arguments:
""""""""""
The two arguments to the '``fdiv``' instruction must be
-:ref:`floating-point <t_floating>` or :ref:`vector <t_vector>` of
+:ref:`floating-point <t_floating>` or :ref:`vector <t_vector>` of
floating-point values. Both arguments must have identical types.
Semantics:
@@ -7209,7 +7209,7 @@ Semantics:
The value produced is the floating-point quotient of the two operands.
This instruction is assumed to execute in the default :ref:`floating-point
-environment <floatenv>`.
+environment <floatenv>`.
This instruction can also take any number of :ref:`fast-math
flags <fastmath>`, which are optimization hints to enable otherwise
unsafe floating-point optimizations:
@@ -7344,7 +7344,7 @@ Arguments:
""""""""""
The two arguments to the '``frem``' instruction must be
-:ref:`floating-point <t_floating>` or :ref:`vector <t_vector>` of
+:ref:`floating-point <t_floating>` or :ref:`vector <t_vector>` of
floating-point values. Both arguments must have identical types.
Semantics:
@@ -7352,10 +7352,10 @@ Semantics:
The value produced is the floating-point remainder of the two operands.
This is the same output as a libm '``fmod``' function, but without any
-possibility of setting ``errno``. The remainder has the same sign as the
+possibility of setting ``errno``. The remainder has the same sign as the
dividend.
This instruction is assumed to execute in the default :ref:`floating-point
-environment <floatenv>`.
+environment <floatenv>`.
This instruction can also take any number of :ref:`fast-math
flags <fastmath>`, which are optimization hints to enable otherwise
unsafe floating-point optimizations:
@@ -8809,7 +8809,7 @@ Semantics:
The '``fptrunc``' instruction casts a ``value`` from a larger
:ref:`floating-point <t_floating>` type to a smaller :ref:`floating-point
-<t_floating>` type.
+<t_floating>` type.
This instruction is assumed to execute in the default :ref:`floating-point
environment <floatenv>`.
@@ -10330,6 +10330,27 @@ of the obvious source-language caller.
This intrinsic is only implemented for x86.
+'``llvm.sponentry``' Intrinsic
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Syntax:
+"""""""
+
+::
+
+ declare i8* @llvm.sponentry()
+
+Overview:
+"""""""""
+
+The '``llvm.sponentry``' intrinsic returns the stack pointer value at
+the entry of the current function calling this intrinsic.
+
+Semantics:
+""""""""""
+
+Note this intrinsic is only verified on AArch64.
+
'``llvm.frameaddress``' Intrinsic
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -12115,11 +12136,11 @@ Overview:
The '``llvm.fshl``' family of intrinsic functions performs a funnel shift left:
the first two values are concatenated as { %a : %b } (%a is the most significant
-bits of the wide value), the combined value is shifted left, and the most
-significant bits are extracted to produce a result that is the same size as the
-original arguments. If the first 2 arguments are identical, this is equivalent
-to a rotate left operation. For vector types, the operation occurs for each
-element of the vector. The shift argument is treated as an unsigned amount
+bits of the wide value), the combined value is shifted left, and the most
+significant bits are extracted to produce a result that is the same size as the
+original arguments. If the first 2 arguments are identical, this is equivalent
+to a rotate left operation. For vector types, the operation occurs for each
+element of the vector. The shift argument is treated as an unsigned amount
modulo the element size of the arguments.
Arguments:
@@ -12161,11 +12182,11 @@ Overview:
The '``llvm.fshr``' family of intrinsic functions performs a funnel shift right:
the first two values are concatenated as { %a : %b } (%a is the most significant
-bits of the wide value), the combined value is shifted right, and the least
-significant bits are extracted to produce a result that is the same size as the
-original arguments. If the first 2 arguments are identical, this is equivalent
-to a rotate right operation. For vector types, the operation occurs for each
-element of the vector. The shift argument is treated as an unsigned amount
+bits of the wide value), the combined value is shifted right, and the least
+significant bits are extracted to produce a result that is the same size as the
+original arguments. If the first 2 arguments are identical, this is equivalent
+to a rotate right operation. For vector types, the operation occurs for each
+element of the vector. The shift argument is treated as an unsigned amount
modulo the element size of the arguments.
Arguments:
@@ -13446,7 +13467,7 @@ The '``llvm.masked.expandload``' intrins
%Tmp = call <8 x double> @llvm.masked.expandload.v8f64(double* %Bptr, <8 x i1> %Mask, <8 x double> undef)
; Store the result in A
call void @llvm.masked.store.v8f64.p0v8f64(<8 x double> %Tmp, <8 x double>* %Aptr, i32 8, <8 x i1> %Mask)
-
+
; %Bptr should be increased on each iteration according to the number of '1' elements in the Mask.
%MaskI = bitcast <8 x i1> %Mask to i8
%MaskIPopcnt = call i8 @llvm.ctpop.i8(i8 %MaskI)
@@ -13503,7 +13524,7 @@ The '``llvm.masked.compressstore``' intr
%Tmp = call <8 x double> @llvm.masked.load.v8f64.p0v8f64(<8 x double>* %Aptr, i32 8, <8 x i1> %Mask, <8 x double> undef)
; Store all selected elements consecutively in array B
call <void> @llvm.masked.compressstore.v8f64(<8 x double> %Tmp, double* %Bptr, <8 x i1> %Mask)
-
+
; %Bptr should be increased on each iteration according to the number of '1' elements in the Mask.
%MaskI = bitcast <8 x i1> %Mask to i8
%MaskIPopcnt = call i8 @llvm.ctpop.i8(i8 %MaskI)
@@ -14136,7 +14157,7 @@ Overview:
The '``llvm.experimental.constrained.powi``' intrinsic returns the first operand
raised to the (positive or negative) power specified by the second operand. The
-order of evaluation of multiplications is not defined. When a vector of
+order of evaluation of multiplications is not defined. When a vector of
floating-point type is used, the second argument remains a scalar integer value.
@@ -14462,7 +14483,7 @@ Overview:
"""""""""
The '``llvm.experimental.constrained.nearbyint``' intrinsic returns the first
-operand rounded to the nearest integer. It will not raise an inexact
+operand rounded to the nearest integer. It will not raise an inexact
floating-point exception if the operand is not an integer.
Modified: llvm/trunk/include/llvm/CodeGen/ISDOpcodes.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/ISDOpcodes.h?rev=345791&r1=345790&r2=345791&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/ISDOpcodes.h (original)
+++ llvm/trunk/include/llvm/CodeGen/ISDOpcodes.h Wed Oct 31 16:16:20 2018
@@ -70,7 +70,7 @@ namespace ISD {
/// of the frame or return address to return. An index of zero corresponds
/// to the current function's frame or return address, an index of one to
/// the parent's frame or return address, and so on.
- FRAMEADDR, RETURNADDR, ADDROFRETURNADDR,
+ FRAMEADDR, RETURNADDR, ADDROFRETURNADDR, SPONENTRY,
/// LOCAL_RECOVER - Represents the llvm.localrecover intrinsic.
/// Materializes the offset from the local object pointer of another
Modified: llvm/trunk/include/llvm/IR/Intrinsics.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/Intrinsics.td?rev=345791&r1=345790&r2=345791&view=diff
==============================================================================
--- llvm/trunk/include/llvm/IR/Intrinsics.td (original)
+++ llvm/trunk/include/llvm/IR/Intrinsics.td Wed Oct 31 16:16:20 2018
@@ -320,6 +320,7 @@ def int_gcwrite : Intrinsic<[],
def int_returnaddress : Intrinsic<[llvm_ptr_ty], [llvm_i32_ty], [IntrNoMem]>;
def int_addressofreturnaddress : Intrinsic<[llvm_ptr_ty], [], [IntrNoMem]>;
def int_frameaddress : Intrinsic<[llvm_ptr_ty], [llvm_i32_ty], [IntrNoMem]>;
+def int_sponentry : Intrinsic<[llvm_ptr_ty], [], [IntrNoMem]>;
def int_read_register : Intrinsic<[llvm_anyint_ty], [llvm_metadata_ty],
[IntrReadMem], "llvm.read_register">;
def int_write_register : Intrinsic<[], [llvm_metadata_ty, llvm_anyint_ty],
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp?rev=345791&r1=345790&r2=345791&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Wed Oct 31 16:16:20 2018
@@ -1059,6 +1059,7 @@ void SelectionDAGLegalize::LegalizeOp(SD
case ISD::FRAMEADDR:
case ISD::RETURNADDR:
case ISD::ADDROFRETURNADDR:
+ case ISD::SPONENTRY:
// These operations lie about being legal: when they claim to be legal,
// they should actually be custom-lowered.
Action = TLI.getOperationAction(Node->getOpcode(), Node->getValueType(0));
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp?rev=345791&r1=345790&r2=345791&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp Wed Oct 31 16:16:20 2018
@@ -5050,6 +5050,10 @@ SelectionDAGBuilder::visitIntrinsicCall(
setValue(&I, DAG.getNode(ISD::ADDROFRETURNADDR, sdl,
TLI.getPointerTy(DAG.getDataLayout())));
return nullptr;
+ case Intrinsic::sponentry:
+ setValue(&I, DAG.getNode(ISD::SPONENTRY, sdl,
+ TLI.getPointerTy(DAG.getDataLayout())));
+ return nullptr;
case Intrinsic::frameaddress:
setValue(&I, DAG.getNode(ISD::FRAMEADDR, sdl,
TLI.getPointerTy(DAG.getDataLayout()),
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp?rev=345791&r1=345790&r2=345791&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp Wed Oct 31 16:16:20 2018
@@ -124,6 +124,7 @@ std::string SDNode::getOperationName(con
case ISD::RETURNADDR: return "RETURNADDR";
case ISD::ADDROFRETURNADDR: return "ADDROFRETURNADDR";
case ISD::FRAMEADDR: return "FRAMEADDR";
+ case ISD::SPONENTRY: return "SPONENTRY";
case ISD::LOCAL_RECOVER: return "LOCAL_RECOVER";
case ISD::READ_REGISTER: return "READ_REGISTER";
case ISD::WRITE_REGISTER: return "WRITE_REGISTER";
Modified: llvm/trunk/lib/Target/AArch64/AArch64FastISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64FastISel.cpp?rev=345791&r1=345790&r2=345791&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64FastISel.cpp (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64FastISel.cpp Wed Oct 31 16:16:20 2018
@@ -3450,6 +3450,22 @@ bool AArch64FastISel::fastLowerIntrinsic
updateValueMap(II, SrcReg);
return true;
}
+ case Intrinsic::sponentry: {
+ MachineFrameInfo &MFI = FuncInfo.MF->getFrameInfo();
+
+ // SP = FP + Fixed Object + 16
+ MVT VT = TLI.getPointerTy(DL);
+ int FI = MFI.CreateFixedObject(4, 0, false);
+ unsigned ResultReg = createResultReg(TLI.getRegClassFor(VT));
+ BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc,
+ TII.get(AArch64::ADDXri), ResultReg)
+ .addFrameIndex(FI)
+ .addImm(0)
+ .addImm(0);
+
+ updateValueMap(II, ResultReg);
+ return true;
+ }
case Intrinsic::memcpy:
case Intrinsic::memmove: {
const auto *MTI = cast<MemTransferInst>(II);
Modified: llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp?rev=345791&r1=345790&r2=345791&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp Wed Oct 31 16:16:20 2018
@@ -2863,6 +2863,8 @@ SDValue AArch64TargetLowering::LowerOper
return LowerFP_EXTEND(Op, DAG);
case ISD::FRAMEADDR:
return LowerFRAMEADDR(Op, DAG);
+ case ISD::SPONENTRY:
+ return LowerSPONENTRY(Op, DAG);
case ISD::RETURNADDR:
return LowerRETURNADDR(Op, DAG);
case ISD::INSERT_VECTOR_ELT:
@@ -5171,6 +5173,16 @@ SDValue AArch64TargetLowering::LowerFRAM
return FrameAddr;
}
+SDValue AArch64TargetLowering::LowerSPONENTRY(SDValue Op,
+ SelectionDAG &DAG) const {
+ MachineFrameInfo &MFI = DAG.getMachineFunction().getFrameInfo();
+
+ EVT VT = getPointerTy(DAG.getDataLayout());
+ SDLoc DL(Op);
+ int FI = MFI.CreateFixedObject(4, 0, false);
+ return DAG.getFrameIndex(FI, VT);
+}
+
// FIXME? Maybe this could be a TableGen attribute on some registers and
// this table could be generated automatically from RegInfo.
unsigned AArch64TargetLowering::getRegisterByName(const char* RegName, EVT VT,
Modified: llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.h?rev=345791&r1=345790&r2=345791&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.h (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.h Wed Oct 31 16:16:20 2018
@@ -617,6 +617,7 @@ private:
SDValue LowerVACOPY(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerVAARG(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerSPONENTRY(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerFLT_ROUNDS_(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerINSERT_VECTOR_ELT(SDValue Op, SelectionDAG &DAG) const;
Added: llvm/trunk/test/CodeGen/AArch64/sponentry.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AArch64/sponentry.ll?rev=345791&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/AArch64/sponentry.ll (added)
+++ llvm/trunk/test/CodeGen/AArch64/sponentry.ll Wed Oct 31 16:16:20 2018
@@ -0,0 +1,104 @@
+; RUN: llc -mtriple=aarch64-windows-msvc -disable-fp-elim %s -o - | FileCheck %s
+; RUN: llc -mtriple=aarch64-windows-msvc -fast-isel -disable-fp-elim %s -o - | FileCheck %s
+; RUN: llc -mtriple=aarch64-windows-msvc %s -o - | FileCheck %s --check-prefix=NOFP
+; RUN: llc -mtriple=aarch64-windows-msvc -fast-isel %s -o - | FileCheck %s --check-prefix=NOFP
+
+ at env2 = common dso_local global [24 x i64]* null, align 8
+
+define dso_local void @bar() {
+ %1 = call i8* @llvm.sponentry()
+ %2 = load [24 x i64]*, [24 x i64]** @env2, align 8
+ %3 = getelementptr inbounds [24 x i64], [24 x i64]* %2, i32 0, i32 0
+ %4 = bitcast i64* %3 to i8*
+ %5 = call i32 @_setjmpex(i8* %4, i8* %1) #2
+ ret void
+}
+
+; CHECK: bar:
+; CHECK: mov x29, sp
+; CHECK: add x1, x29, #16
+; CEHCK: bl _setjmpex
+
+; NOFP: str x30, [sp, #-16]!
+; NOFP: add x1, sp, #16
+
+define dso_local void @foo([24 x i64]*) {
+ %2 = alloca [24 x i64]*, align 8
+ %3 = alloca i32, align 4
+ %4 = alloca [100 x i32], align 4
+ store [24 x i64]* %0, [24 x i64]** %2, align 8
+ %5 = call i8* @llvm.sponentry()
+ %6 = load [24 x i64]*, [24 x i64]** %2, align 8
+ %7 = getelementptr inbounds [24 x i64], [24 x i64]* %6, i32 0, i32 0
+ %8 = bitcast i64* %7 to i8*
+ %9 = call i32 @_setjmpex(i8* %8, i8* %5)
+ store i32 %9, i32* %3, align 4
+ ret void
+}
+
+; CHECK: foo:
+; CHECK: sub sp, sp, #448
+; CHECK: add x29, sp, #432
+; CHECK: add x1, x29, #16
+; CEHCK: bl _setjmpex
+
+; NOFP: sub sp, sp, #432
+; NOFP: add x1, sp, #432
+
+define dso_local void @var_args(i8*, ...) {
+ %2 = alloca i8*, align 8
+ %3 = alloca i8*, align 8
+ store i8* %0, i8** %2, align 8
+ %4 = bitcast i8** %3 to i8*
+ call void @llvm.va_start(i8* %4)
+ %5 = load i8*, i8** %3, align 8
+ %6 = getelementptr inbounds i8, i8* %5, i64 8
+ store i8* %6, i8** %3, align 8
+ %7 = bitcast i8* %5 to i32*
+ %8 = load i32, i32* %7, align 8
+ %9 = bitcast i8** %3 to i8*
+ call void @llvm.va_end(i8* %9)
+ %10 = call i8* @llvm.sponentry()
+ %11 = load [24 x i64]*, [24 x i64]** @env2, align 8
+ %12 = getelementptr inbounds [24 x i64], [24 x i64]* %11, i32 0, i32 0
+ %13 = bitcast i64* %12 to i8*
+ %14 = call i32 @_setjmpex(i8* %13, i8* %10) #3
+ ret void
+}
+
+; CHECK: var_args:
+; CHECK: sub sp, sp, #96
+; CHECK: add x29, sp, #16
+; CHECK: add x1, x29, #80
+; CEHCK: bl _setjmpex
+
+; NOFP: sub sp, sp, #96
+; NOFP: add x1, sp, #96
+
+define dso_local void @manyargs(i64 %x1, i64 %x2, i64 %x3, i64 %x4, i64 %x5, i64 %x6, i64 %x7, i64 %x8, i64 %x9, i64 %x10) {
+ %1 = call i8* @llvm.sponentry()
+ %2 = load [24 x i64]*, [24 x i64]** @env2, align 8
+ %3 = getelementptr inbounds [24 x i64], [24 x i64]* %2, i32 0, i32 0
+ %4 = bitcast i64* %3 to i8*
+ %5 = call i32 @_setjmpex(i8* %4, i8* %1) #2
+ ret void
+}
+
+; CHECK: manyargs:
+; CHECK: stp x29, x30, [sp, #-16]!
+; CHECK: add x1, x29, #16
+
+; NOFP: str x30, [sp, #-16]!
+; NOFP: add x1, sp, #16
+
+; Function Attrs: nounwind readnone
+declare i8* @llvm.sponentry()
+
+; Function Attrs: returns_twice
+declare dso_local i32 @_setjmpex(i8*, i8*)
+
+; Function Attrs: nounwind
+declare void @llvm.va_start(i8*) #1
+
+; Function Attrs: nounwind
+declare void @llvm.va_end(i8*) #1
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