[llvm] 6d648e6 - [AIX] Add support for non var_arg extended vector ABI calling convention on AIX
Zarko Todorovski via llvm-commits
llvm-commits at lists.llvm.org
Thu Nov 26 09:04:30 PST 2020
Author: Zarko Todorovski
Date: 2020-11-26T12:03:51-05:00
New Revision: 6d648e69c0949e8942cab88e7ec13f5037364338
URL: https://github.com/llvm/llvm-project/commit/6d648e69c0949e8942cab88e7ec13f5037364338
DIFF: https://github.com/llvm/llvm-project/commit/6d648e69c0949e8942cab88e7ec13f5037364338.diff
LOG: [AIX] Add support for non var_arg extended vector ABI calling convention on AIX
This patch enables passing non variadic vector type parameters on the caller and callee side and vector return on AIX that are passed in vector registers only.
So far, support is enabled for only the AIX extended Altivec ABI Calling convention.
Reviewed By: sfertile, DiggerLin
Differential Revision: https://reviews.llvm.org/D86476
Added:
llvm/test/CodeGen/PowerPC/aix-cc-ext-vec-abi.ll
llvm/test/CodeGen/PowerPC/aix-vector-stack-caller.ll
llvm/test/CodeGen/PowerPC/aix-vector-stack.ll
Modified:
llvm/lib/Target/PowerPC/PPCISelLowering.cpp
llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp
llvm/test/CodeGen/PowerPC/aix-cc-altivec.ll
llvm/test/CodeGen/PowerPC/aix-vec-abi.ll
Removed:
llvm/test/CodeGen/PowerPC/aix-vector-return.ll
################################################################################
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 1f3ef3efa2c2..cf369f5f12c1 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -6998,24 +6998,12 @@ static bool CC_AIX(unsigned ValNo, MVT ValVT, MVT LocVT,
.Options.EnableAIXExtendedAltivecABI)
report_fatal_error("the default Altivec AIX ABI is not yet supported");
- if (ValVT.isVector() && State.getMachineFunction()
- .getTarget()
- .Options.EnableAIXExtendedAltivecABI)
- report_fatal_error("the extended Altivec AIX ABI is not yet supported");
-
- assert((!ValVT.isInteger() ||
- (ValVT.getFixedSizeInBits() <= RegVT.getFixedSizeInBits())) &&
- "Integer argument exceeds register size: should have been legalized");
-
if (ValVT == MVT::f128)
report_fatal_error("f128 is unimplemented on AIX.");
if (ArgFlags.isNest())
report_fatal_error("Nest arguments are unimplemented.");
- if (ValVT.isVector() || LocVT.isVector())
- report_fatal_error("Vector arguments are unimplemented on AIX.");
-
static const MCPhysReg GPR_32[] = {// 32-bit registers.
PPC::R3, PPC::R4, PPC::R5, PPC::R6,
PPC::R7, PPC::R8, PPC::R9, PPC::R10};
@@ -7023,6 +7011,11 @@ static bool CC_AIX(unsigned ValNo, MVT ValVT, MVT LocVT,
PPC::X3, PPC::X4, PPC::X5, PPC::X6,
PPC::X7, PPC::X8, PPC::X9, PPC::X10};
+ static const MCPhysReg VR[] = {// Vector registers.
+ PPC::V2, PPC::V3, PPC::V4, PPC::V5,
+ PPC::V6, PPC::V7, PPC::V8, PPC::V9,
+ PPC::V10, PPC::V11, PPC::V12, PPC::V13};
+
if (ArgFlags.isByVal()) {
if (ArgFlags.getNonZeroByValAlign() > PtrAlign)
report_fatal_error("Pass-by-value arguments with alignment greater than "
@@ -7118,6 +7111,25 @@ static bool CC_AIX(unsigned ValNo, MVT ValVT, MVT LocVT,
return false;
}
+ case MVT::v4f32:
+ case MVT::v4i32:
+ case MVT::v8i16:
+ case MVT::v16i8:
+ case MVT::v2i64:
+ case MVT::v2f64:
+ case MVT::v1i128: {
+ if (State.isVarArg())
+ report_fatal_error(
+ "variadic arguments for vector types are unimplemented for AIX");
+
+ if (unsigned VReg = State.AllocateReg(VR))
+ State.addLoc(CCValAssign::getReg(ValNo, ValVT, VReg, LocVT, LocInfo));
+ else {
+ report_fatal_error(
+ "passing vector parameters to the stack is unimplemented for AIX");
+ }
+ return false;
+ }
}
return true;
}
@@ -7138,6 +7150,14 @@ static const TargetRegisterClass *getRegClassForSVT(MVT::SimpleValueType SVT,
return &PPC::F4RCRegClass;
case MVT::f64:
return &PPC::F8RCRegClass;
+ case MVT::v4f32:
+ case MVT::v4i32:
+ case MVT::v8i16:
+ case MVT::v16i8:
+ case MVT::v2i64:
+ case MVT::v2f64:
+ case MVT::v1i128:
+ return &PPC::VRRCRegClass;
}
}
@@ -7254,6 +7274,9 @@ SDValue PPCTargetLowering::LowerFormalArguments_AIX(
CCValAssign &VA = ArgLocs[I++];
MVT LocVT = VA.getLocVT();
ISD::ArgFlagsTy Flags = Ins[VA.getValNo()].Flags;
+ if (VA.isMemLoc() && VA.getValVT().isVector())
+ report_fatal_error(
+ "passing vector parameters to the stack is unimplemented for AIX");
// For compatibility with the AIX XL compiler, the float args in the
// parameter save area are initialized even if the argument is available
@@ -7451,8 +7474,6 @@ SDValue PPCTargetLowering::LowerCall_AIX(
const PPCSubtarget& Subtarget =
static_cast<const PPCSubtarget&>(DAG.getSubtarget());
- if (Subtarget.hasAltivec())
- report_fatal_error("Altivec support is unimplemented on AIX.");
MachineFunction &MF = DAG.getMachineFunction();
SmallVector<CCValAssign, 16> ArgLocs;
@@ -7598,6 +7619,10 @@ SDValue PPCTargetLowering::LowerCall_AIX(
const MVT LocVT = VA.getLocVT();
const MVT ValVT = VA.getValVT();
+ if (VA.isMemLoc() && VA.getValVT().isVector())
+ report_fatal_error(
+ "passing vector parameters to the stack is unimplemented for AIX");
+
switch (VA.getLocInfo()) {
default:
report_fatal_error("Unexpected argument extension type.");
@@ -7742,10 +7767,6 @@ PPCTargetLowering::LowerReturn(SDValue Chain, CallingConv::ID CallConv,
SDValue Arg = OutVals[RealResIdx];
- if (Subtarget.isAIXABI() &&
- (VA.getLocVT().isVector() || VA.getValVT().isVector()))
- report_fatal_error("Returning vector types not yet supported on AIX.");
-
switch (VA.getLocInfo()) {
default: llvm_unreachable("Unknown loc info!");
case CCValAssign::Full: break;
diff --git a/llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp b/llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp
index 9ff6bdd6e51c..03672f40b2af 100644
--- a/llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp
+++ b/llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp
@@ -231,8 +231,10 @@ PPCRegisterInfo::getCallPreservedMask(const MachineFunction &MF,
}
if (Subtarget.isAIXABI()) {
- assert(!Subtarget.hasAltivec() && "Altivec is not implemented on AIX yet.");
- return TM.isPPC64() ? CSR_PPC64_RegMask : CSR_AIX32_RegMask;
+ return TM.isPPC64() ? (Subtarget.hasAltivec() ? CSR_PPC64_Altivec_RegMask
+ : CSR_PPC64_RegMask)
+ : (Subtarget.hasAltivec() ? CSR_AIX32_Altivec_RegMask
+ : CSR_AIX32_RegMask);
}
if (CC == CallingConv::Cold) {
diff --git a/llvm/test/CodeGen/PowerPC/aix-cc-altivec.ll b/llvm/test/CodeGen/PowerPC/aix-cc-altivec.ll
index 5be6213398da..a801a65229e4 100644
--- a/llvm/test/CodeGen/PowerPC/aix-cc-altivec.ll
+++ b/llvm/test/CodeGen/PowerPC/aix-cc-altivec.ll
@@ -1,12 +1,7 @@
-; RUN: not --crash llc < %s -mtriple powerpc64-ibm-aix-xcoff -mcpu=pwr8 2>&1 | FileCheck %s
-; RUN: not --crash llc < %s -mtriple powerpc-ibm-aix-xcoff -mcpu=pwr8 2>&1 | FileCheck %s
-
-; This test expects a compiler diagnostic for an AIX limitation on Altivec
-; support. When the Altivec limitation diagnostic is removed, this test
-; should compile clean and fail in order to alert the author to validate the
-; instructions emitted to initialize the GPR for the double vararg.
-; The mfvsrwz and mfvsrd instructions should be used to initialize the GPR for
-; the double vararg without going through memory.
+; RUN: llc < %s -mtriple powerpc64-ibm-aix-xcoff -vec-extabi -mcpu=pwr8 2>&1
+; | FileCheck %s --check-prefix=ASM64
+; RUN: llc < %s -mtriple powerpc-ibm-aix-xcoff -vec-extabi -mcpu=pwr8 2>&1
+; | FileCheck %s --check-prefix=ASM32
@f1 = global float 0.000000e+00, align 4
@@ -20,4 +15,15 @@ entry:
declare void @test_vararg(i32, ...)
-; CHECK: LLVM ERROR: Altivec support is unimplemented on AIX.
+
+; ASM64: xscvdpspn
+; ASM64: mffprd
+; ASM64: xxsldwi
+; ASM64: mffprwz
+
+
+; ASM32: lfsx
+; ASM32: fmr
+; ASM32: stfs
+; ASM32: lwz
+; ASM32: stfd
diff --git a/llvm/test/CodeGen/PowerPC/aix-cc-ext-vec-abi.ll b/llvm/test/CodeGen/PowerPC/aix-cc-ext-vec-abi.ll
new file mode 100644
index 000000000000..120083ed36bd
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/aix-cc-ext-vec-abi.ll
@@ -0,0 +1,115 @@
+; RUN: llc -verify-machineinstrs -mcpu=pwr7 -mattr=+altivec \
+; RUN: -vec-extabi -mtriple powerpc-ibm-aix-xcoff < %s | \
+; RUN: FileCheck --check-prefixes=ASM32,ASM %s
+
+; RUN: llc -verify-machineinstrs -mcpu=pwr7 -mattr=+altivec \
+; RUN: -vec-extabi -mtriple powerpc64-ibm-aix-xcoff < %s | \
+; RUN: FileCheck --check-prefixes=ASM64,ASM %s
+
+define dso_local <4 x i32> @vec_callee(<4 x i32> %vec1, <4 x i32> %vec2, <4 x i32> %vec3, <4 x i32> %vec4, <4 x i32> %vec5, <4 x i32> %vec6, <4 x i32> %vec7, <4 x i32> %vec8, <4 x i32> %vec9, <4 x i32> %vec10, <4 x i32> %vec11, <4 x i32> %vec12) {
+entry:
+ %add = add <4 x i32> %vec1, %vec2
+ %add1 = add <4 x i32> %add, %vec3
+ %add2 = add <4 x i32> %add1, %vec4
+ %add3 = add <4 x i32> %add2, %vec5
+ %add4 = add <4 x i32> %add3, %vec6
+ %add5 = add <4 x i32> %add4, %vec7
+ %add6 = add <4 x i32> %add5, %vec8
+ %add7 = add <4 x i32> %add6, %vec9
+ %add8 = add <4 x i32> %add7, %vec10
+ %add9 = add <4 x i32> %add8, %vec11
+ %add10 = add <4 x i32> %add9, %vec12
+ ret <4 x i32> %add10
+}
+
+; ASM-LABEL: .vec_callee:
+
+; ASM: %entry
+; ASM-DAG: vadduwm 2, 2, 3
+; ASM-DAG: vadduwm 2, 2, 4
+; ASM-DAG: vadduwm 2, 2, 5
+; ASM-DAG: vadduwm 2, 2, 6
+; ASM-DAG: vadduwm 2, 2, 7
+; ASM-DAG: vadduwm 2, 2, 8
+; ASM-DAG: vadduwm 2, 2, 9
+; ASM-DAG: vadduwm 2, 2, 10
+; ASM-DAG: vadduwm 2, 2, 11
+; ASM-DAG: vadduwm 2, 2, 12
+; ASM-DAG: vadduwm 2, 2, 13
+; ASM: blr
+
+define dso_local i32 @vec_caller() {
+entry:
+ %call = call <4 x i32> @vec_callee(<4 x i32> <i32 1, i32 2, i32 3, i32 4>, <4 x i32> <i32 5, i32 6, i32 7, i32 8>, <4 x i32> <i32 9, i32 10, i32 11, i32 12>, <4 x i32> <i32 13, i32 14, i32 15, i32 16>, <4 x i32> <i32 17, i32 18, i32 19, i32 20>, <4 x i32> <i32 21, i32 22, i32 23, i32 24>, <4 x i32> <i32 25, i32 26, i32 27, i32 28>, <4 x i32> <i32 29, i32 30, i32 31, i32 32>, <4 x i32> <i32 33, i32 34, i32 35, i32 36>, <4 x i32> <i32 37, i32 38, i32 39, i32 40>, <4 x i32> <i32 41, i32 42, i32 43, i32 44>, <4 x i32> <i32 45, i32 46, i32 47, i32 48>)
+ ret i32 0
+}
+
+; ASM-LABEL: .vec_caller:
+; ASM32: # %bb.0: # %entry
+; ASM32-DAG: mflr 0
+; ASM32-DAG: stw 0, 8(1)
+; ASM32-DAG: stwu 1, -64(1)
+; ASM32-DAG: lwz [[REG1:[0-9]+]], L..C0(2)
+; ASM32-DAG: lxvw4x 34, 0, [[REG1]]
+; ASM32-DAG: lwz [[REG2:[0-9]+]], L..C1(2)
+; ASM32-DAG: lxvw4x 35, 0, [[REG2]]
+; ASM32-DAG: lwz [[REG3:[0-9]+]], L..C2(2)
+; ASM32-DAG: lxvw4x 36, 0, [[REG3]]
+; ASM32-DAG: lwz [[REG4:[0-9]+]], L..C3(2)
+; ASM32-DAG: lxvw4x 37, 0, [[REG4]]
+; ASM32-DAG: lwz [[REG5:[0-9]+]], L..C4(2)
+; ASM32-DAG: lxvw4x 38, 0, [[REG5]]
+; ASM32-DAG: lwz [[REG6:[0-9]+]], L..C5(2)
+; ASM32-DAG: lxvw4x 39, 0, [[REG6]]
+; ASM32-DAG: lwz [[REG7:[0-9]+]], L..C6(2)
+; ASM32-DAG: lxvw4x 40, 0, [[REG7]]
+; ASM32-DAG: lwz [[REG8:[0-9]+]], L..C7(2)
+; ASM32-DAG: lxvw4x 41, 0, [[REG8]]
+; ASM32-DAG: lwz [[REG9:[0-9]+]], L..C8(2)
+; ASM32-DAG: lxvw4x 42, 0, [[REG9]]
+; ASM32-DAG: lwz [[REG10:[0-9]+]], L..C9(2)
+; ASM32-DAG: lxvw4x 43, 0, [[REG10]]
+; ASM32-DAG: lwz [[REG11:[0-9]+]], L..C10(2)
+; ASM32-DAG: lxvw4x 44, 0, [[REG11]]
+; ASM32-DAG: lwz [[REG12:[0-9]+]], L..C11(2)
+; ASM32-DAG: lxvw4x 45, 0, [[REG12]]
+; ASM32-DAG: bl .vec_callee
+; ASM32-DAG: li 3, 0
+; ASM32-DAG: addi 1, 1, 64
+; ASM32-DAG: lwz 0, 8(1)
+; ASM32-DAG: mtlr 0
+; ASM32: blr
+
+; ASM64: # %entry
+; ASM64-DAG: std 0, 16(1)
+; ASM64-DAG: stdu 1, -112(1)
+; ASM64-DAG: ld [[REG1:[0-9]+]], L..C0(2)
+; ASM64-DAG: lxvw4x 34, 0, [[REG1]]
+; ASM64-DAG: ld [[REG2:[0-9]+]], L..C1(2)
+; ASM64-DAG: lxvw4x 35, 0, [[REG2]]
+; ASM64-DAG: ld [[REG3:[0-9]+]], L..C2(2)
+; ASM64-DAG: lxvw4x 36, 0, [[REG3]]
+; ASM64-DAG: ld [[REG4:[0-9]+]], L..C3(2)
+; ASM64-DAG: lxvw4x 37, 0, [[REG4]]
+; ASM64-DAG: ld [[REG5:[0-9]+]], L..C4(2)
+; ASM64-DAG: lxvw4x 38, 0, [[REG5]]
+; ASM64-DAG: ld [[REG6:[0-9]+]], L..C5(2)
+; ASM64-DAG: lxvw4x 39, 0, [[REG6]]
+; ASM64-DAG: ld [[REG7:[0-9]+]], L..C6(2)
+; ASM64-DAG: lxvw4x 40, 0, [[REG7]]
+; ASM64-DAG: ld [[REG8:[0-9]+]], L..C7(2)
+; ASM64-DAG: lxvw4x 41, 0, [[REG8]]
+; ASM64-DAG: ld [[REG9:[0-9]+]], L..C8(2)
+; ASM64-DAG: lxvw4x 42, 0, [[REG9]]
+; ASM64-DAG: ld [[REG10:[0-9]+]], L..C9(2)
+; ASM64-DAG: lxvw4x 43, 0, [[REG10]]
+; ASM64-DAG: ld [[REG11:[0-9]+]], L..C10(2)
+; ASM64-DAG: lxvw4x 44, 0, [[REG11]]
+; ASM64-DAG: ld [[REG12:[0-9]+]], L..C11(2)
+; ASM64-DAG: lxvw4x 45, 0, [[REG12]]
+; ASM64-DAG: bl .vec_callee
+; ASM64-DAG: li 3, 0
+; ASM64-DAG: addi 1, 1, 112
+; ASM64-DAG: ld 0, 16(1)
+; ASM64-DAG: mtlr 0
+; ASM64: blr
diff --git a/llvm/test/CodeGen/PowerPC/aix-vec-abi.ll b/llvm/test/CodeGen/PowerPC/aix-vec-abi.ll
index 31087372dede..9dac55c37b93 100644
--- a/llvm/test/CodeGen/PowerPC/aix-vec-abi.ll
+++ b/llvm/test/CodeGen/PowerPC/aix-vec-abi.ll
@@ -1,12 +1,8 @@
; RUN: not --crash llc < %s -mtriple powerpc64-ibm-aix-xcoff -mcpu=pwr8 2>&1 | FileCheck %s --check-prefix=DFLTERROR
; RUN: not --crash llc < %s -mtriple powerpc-ibm-aix-xcoff -mcpu=pwr8 2>&1 | FileCheck %s --check-prefix=DFLTERROR
-; RUN: not --crash llc < %s -mtriple powerpc64-ibm-aix-xcoff -mcpu=pwr8 -vec-extabi 2>&1 | FileCheck %s --check-prefix=VEXTERROR
-; RUN: not --crash llc < %s -mtriple powerpc-ibm-aix-xcoff -mcpu=pwr8 -vec-extabi 2>&1 | FileCheck %s --check-prefix=VEXTERROR
-
define void @vec_callee(<4 x i32> %vec1) {
ret void
}
; DFLTERROR: LLVM ERROR: the default Altivec AIX ABI is not yet supported
-; VEXTERROR: LLVM ERROR: the extended Altivec AIX ABI is not yet supported
diff --git a/llvm/test/CodeGen/PowerPC/aix-vector-return.ll b/llvm/test/CodeGen/PowerPC/aix-vector-return.ll
deleted file mode 100644
index b4e39d6c05fe..000000000000
--- a/llvm/test/CodeGen/PowerPC/aix-vector-return.ll
+++ /dev/null
@@ -1,12 +0,0 @@
-; RUN: not --crash llc --verify-machineinstrs -mtriple powerpc-ibm-aix-xcoff \
-; RUN: -mattr=+altivec 2>&1 < %s | FileCheck %s
-
-; RUN: not --crash llc --verify-machineinstrs -mtriple powerpc64-ibm-aix-xcoff \
-; RUN: -mattr=+altivec 2>&1 < %s | FileCheck %s
-
-; CHECK: LLVM ERROR: Returning vector types not yet supported on AIX.
-
-define dso_local <4 x i32> @test() local_unnamed_addr #0 {
- entry:
- ret <4 x i32> zeroinitializer
-}
diff --git a/llvm/test/CodeGen/PowerPC/aix-vector-stack-caller.ll b/llvm/test/CodeGen/PowerPC/aix-vector-stack-caller.ll
new file mode 100644
index 000000000000..63653f524c5d
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/aix-vector-stack-caller.ll
@@ -0,0 +1,17 @@
+; RUN: not --crash llc < %s -verify-machineinstrs -mcpu=pwr7 -mattr=+altivec \
+; RUN: -vec-extabi -mtriple powerpc-ibm-aix-xcoff 2>&1 | \
+; RUN: FileCheck %s --check-prefix=AIX-ERROR
+
+; RUN: not --crash llc < %s -verify-machineinstrs -mcpu=pwr7 -mattr=+altivec \
+; RUN: -vec-extabi -mtriple powerpc64-ibm-aix-xcoff 2>&1 | \
+; RUN: FileCheck %s --check-prefix=AIX-ERROR
+
+define dso_local i32 @vec_caller() {
+entry:
+ %call = call i32 bitcast (i32 (...)* @vec_callee_stack to i32 (<4 x i32>, <4 x i32>, <4 x i32>, <4 x i32>, <4 x i32>, <4 x i32>, <4 x i32>, <4 x i32>, <4 x i32>, <4 x i32>, <4 x i32>, <4 x i32>, <4 x i32>, <4 x i32>)*)(<4 x i32> <i32 1, i32 2, i32 3, i32 4>, <4 x i32> <i32 5, i32 6, i32 7, i32 8>, <4 x i32> <i32 9, i32 10, i32 11, i32 12>, <4 x i32> <i32 13, i32 14, i32 15, i32 16>, <4 x i32> <i32 17, i32 18, i32 19, i32 20>, <4 x i32> <i32 21, i32 22, i32 23, i32 24>, <4 x i32> <i32 25, i32 26, i32 27, i32 28>, <4 x i32> <i32 29, i32 30, i32 31, i32 32>, <4 x i32> <i32 33, i32 34, i32 35, i32 36>, <4 x i32> <i32 37, i32 38, i32 39, i32 40>, <4 x i32> <i32 41, i32 42, i32 43, i32 44>, <4 x i32> <i32 45, i32 46, i32 47, i32 48>, <4 x i32> <i32 49, i32 50, i32 51, i32 52>, <4 x i32> <i32 53, i32 54, i32 55, i32 56>)
+ ret i32 0
+}
+
+declare i32 @vec_callee_stack(...)
+
+; AIX-ERROR: LLVM ERROR: passing vector parameters to the stack is unimplemented for AIX
diff --git a/llvm/test/CodeGen/PowerPC/aix-vector-stack.ll b/llvm/test/CodeGen/PowerPC/aix-vector-stack.ll
new file mode 100644
index 000000000000..8809de9c5019
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/aix-vector-stack.ll
@@ -0,0 +1,27 @@
+; RUN: not --crash llc < %s -verify-machineinstrs -mcpu=pwr7 -mattr=+altivec \
+; RUN: -vec-extabi -mtriple powerpc-ibm-aix-xcoff 2>&1 | \
+; RUN: FileCheck %s --check-prefix=AIX-ERROR
+
+; RUN: not --crash llc < %s -verify-machineinstrs -mcpu=pwr7 -mattr=+altivec \
+; RUN: -vec-extabi -mtriple powerpc64-ibm-aix-xcoff 2>&1 | \
+; RUN: FileCheck %s --check-prefix=AIX-ERROR
+
+define dso_local <4 x i32> @vec_callee_stack(<4 x i32> %vec1, <4 x i32> %vec2, <4 x i32> %vec3, <4 x i32> %vec4, <4 x i32> %vec5, <4 x i32> %vec6, <4 x i32> %vec7, <4 x i32> %vec8, <4 x i32> %vec9, <4 x i32> %vec10, <4 x i32> %vec11, <4 x i32> %vec12, <4 x i32> %vec13, <4 x i32> %vec14) {
+entry:
+ %add = add <4 x i32> %vec1, %vec2
+ %add1 = add <4 x i32> %add, %vec3
+ %add2 = add <4 x i32> %add1, %vec4
+ %add3 = add <4 x i32> %add2, %vec5
+ %add4 = add <4 x i32> %add3, %vec6
+ %add5 = add <4 x i32> %add4, %vec7
+ %add6 = add <4 x i32> %add5, %vec8
+ %add7 = add <4 x i32> %add6, %vec9
+ %add8 = add <4 x i32> %add7, %vec10
+ %add9 = add <4 x i32> %add8, %vec11
+ %add10 = add <4 x i32> %add9, %vec12
+ %add11 = add <4 x i32> %add10, %vec13
+ %add12 = add <4 x i32> %add11, %vec14
+ ret <4 x i32> %add12
+}
+
+; AIX-ERROR: LLVM ERROR: passing vector parameters to the stack is unimplemented for AIX
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