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Add support for musl-libc on ARM Linux. 

Patch by Lei Zhang!

llvm-svn: 273726
This commit is contained in:
Rafael Espindola 2016-06-24 21:14:33 +00:00
parent cd7f886e06
commit a895a0cd01
13 changed files with 69 additions and 5 deletions
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9
llvm/include/llvm/ADT/Triple.h
View File

@ -180,6 +180,8 @@ public:
EABIHF,
Android,
Musl,
MuslEABI,
MuslEABIHF,
MSVC,
Itanium,
@ -571,6 +573,13 @@ public:
/// Tests whether the target is Android
bool isAndroid() const { return getEnvironment() == Triple::Android; }
/// Tests whether the environment is musl-libc
bool isMusl() const {
return getEnvironment() == Triple::Musl ||
getEnvironment() == Triple::MuslEABI ||
getEnvironment() == Triple::MuslEABIHF;
}
/// Tests whether the target is NVPTX (32- or 64-bit).
bool isNVPTX() const {
return getArch() == Triple::nvptx || getArch() == Triple::nvptx64;

5
llvm/lib/Support/Triple.cpp
View File

@ -206,6 +206,8 @@ const char *Triple::getEnvironmentTypeName(EnvironmentType Kind) {
case EABIHF: return "eabihf";
case Android: return "android";
case Musl: return "musl";
case MuslEABI: return "musleabi";
case MuslEABIHF: return "musleabihf";
case MSVC: return "msvc";
case Itanium: return "itanium";
case Cygnus: return "cygnus";
@ -465,6 +467,8 @@ static Triple::EnvironmentType parseEnvironment(StringRef EnvironmentName) {
.StartsWith("code16", Triple::CODE16)
.StartsWith("gnu", Triple::GNU)
.StartsWith("android", Triple::Android)
.StartsWith("musleabihf", Triple::MuslEABIHF)
.StartsWith("musleabi", Triple::MuslEABI)
.StartsWith("musl", Triple::Musl)
.StartsWith("msvc", Triple::MSVC)
.StartsWith("itanium", Triple::Itanium)
@ -1454,6 +1458,7 @@ StringRef Triple::getARMCPUForArch(StringRef MArch) const {
switch (getEnvironment()) {
case llvm::Triple::EABIHF:
case llvm::Triple::GNUEABIHF:
case llvm::Triple::MuslEABIHF:
return "arm1176jzf-s";
default:
return "arm7tdmi";

3
llvm/lib/Target/ARM/ARMAsmPrinter.cpp
View File

@ -562,7 +562,8 @@ void ARMAsmPrinter::EmitEndOfAsmFile(Module &M) {
ARMTargetStreamer &ATS = static_cast<ARMTargetStreamer &>(TS);
if (OptimizationGoals > 0 &&
(Subtarget->isTargetAEABI() || Subtarget->isTargetGNUAEABI()))
(Subtarget->isTargetAEABI() || Subtarget->isTargetGNUAEABI() ||
Subtarget->isTargetMuslAEABI()))
ATS.emitAttribute(ARMBuildAttrs::ABI_optimization_goals, OptimizationGoals);
OptimizationGoals = -1;

6
llvm/lib/Target/ARM/ARMISelLowering.cpp
View File

@ -255,7 +255,7 @@ ARMTargetLowering::ARMTargetLowering(const TargetMachine &TM,
// RTLIB
if (Subtarget->isAAPCS_ABI() &&
(Subtarget->isTargetAEABI() || Subtarget->isTargetGNUAEABI() ||
Subtarget->isTargetAndroid())) {
Subtarget->isTargetMuslAEABI() || Subtarget->isTargetAndroid())) {
static const struct {
const RTLIB::Libcall Op;
const char * const Name;
@ -793,7 +793,7 @@ ARMTargetLowering::ARMTargetLowering(const TargetMachine &TM,
setOperationAction(ISD::UREM, MVT::i32, Expand);
// Register based DivRem for AEABI (RTABI 4.2)
if (Subtarget->isTargetAEABI() || Subtarget->isTargetAndroid() ||
Subtarget->isTargetGNUAEABI()) {
Subtarget->isTargetGNUAEABI() || Subtarget->isTargetMuslAEABI()) {
setOperationAction(ISD::SREM, MVT::i64, Custom);
setOperationAction(ISD::UREM, MVT::i64, Custom);
@ -12048,7 +12048,7 @@ static TargetLowering::ArgListTy getDivRemArgList(
SDValue ARMTargetLowering::LowerDivRem(SDValue Op, SelectionDAG &DAG) const {
assert((Subtarget->isTargetAEABI() || Subtarget->isTargetAndroid() ||
Subtarget->isTargetGNUAEABI()) &&
Subtarget->isTargetGNUAEABI() || Subtarget->isTargetMuslAEABI()) &&
"Register-based DivRem lowering only");
unsigned Opcode = Op->getOpcode();
assert((Opcode == ISD::SDIVREM || Opcode == ISD::UDIVREM) &&

8
llvm/lib/Target/ARM/ARMSubtarget.h
View File

@ -446,14 +446,21 @@ public:
TargetTriple.getEnvironment() == Triple::GNUEABIHF) &&
!isTargetDarwin() && !isTargetWindows();
}
bool isTargetMuslAEABI() const {
return (TargetTriple.getEnvironment() == Triple::MuslEABI ||
TargetTriple.getEnvironment() == Triple::MuslEABIHF) &&
!isTargetDarwin() && !isTargetWindows();
}
// 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();
}
@ -461,6 +468,7 @@ public:
bool isTargetHardFloat() const {
// FIXME: this is invalid for WindowsCE
return TargetTriple.getEnvironment() == Triple::GNUEABIHF ||
TargetTriple.getEnvironment() == Triple::MuslEABIHF ||
TargetTriple.getEnvironment() == Triple::EABIHF ||
isTargetWindows() || isAAPCS16_ABI();
}

5
llvm/lib/Target/ARM/ARMTargetMachine.cpp
View File

@ -100,6 +100,8 @@ computeTargetABI(const Triple &TT, StringRef CPU,
case llvm::Triple::Android:
case llvm::Triple::GNUEABI:
case llvm::Triple::GNUEABIHF:
case llvm::Triple::MuslEABI:
case llvm::Triple::MuslEABIHF:
case llvm::Triple::EABIHF:
case llvm::Triple::EABI:
TargetABI = ARMBaseTargetMachine::ARM_ABI_AAPCS;
@ -208,7 +210,8 @@ ARMBaseTargetMachine::ARMBaseTargetMachine(const Target &T, const Triple &TT,
// Default to triple-appropriate EABI
if (Options.EABIVersion == EABI::Default ||
Options.EABIVersion == EABI::Unknown) {
if (Subtarget.isTargetGNUAEABI())
// musl is compatible with glibc with regard to EABI version
if (Subtarget.isTargetGNUAEABI() || Subtarget.isTargetMuslAEABI())
this->Options.EABIVersion = EABI::GNU;
else
this->Options.EABIVersion = EABI::EABI5;

8
llvm/test/CodeGen/ARM/arm-eabi.ll
View File

@ -3,21 +3,29 @@
; RUN: llc < %s -mtriple=arm-none-androideabi -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-gnueabi -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI
; RUN: llc < %s -mtriple=arm-none-gnueabihf -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI
; RUN: llc < %s -mtriple=arm-none-musleabi -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI
; RUN: llc < %s -mtriple=arm-none-musleabihf -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI
; RUN: llc < %s -mtriple=arm-none-eabi -meabi=gnu -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI
; RUN: llc < %s -mtriple=arm-none-eabihf -meabi=gnu -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI
; RUN: llc < %s -mtriple=arm-none-androideabi -meabi=gnu -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI
; RUN: llc < %s -mtriple=arm-none-gnueabi -meabi=gnu -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI
; RUN: llc < %s -mtriple=arm-none-gnueabihf -meabi=gnu -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI
; RUN: llc < %s -mtriple=arm-none-musleabi -meabi=gnu -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI
; RUN: llc < %s -mtriple=arm-none-musleabihf -meabi=gnu -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI
; RUN: llc < %s -mtriple=arm-none-eabi -meabi=4 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-eabihf -meabi=4 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-androideabi -meabi=4 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-gnueabi -meabi=4 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-gnueabihf -meabi=4 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-musleabi -meabi=4 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-musleabihf -meabi=4 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-eabi -meabi=5 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-eabihf -meabi=5 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-androideabi -meabi=5 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-gnueabi -meabi=5 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-gnueabihf -meabi=5 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-musleabi -meabi=5 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
; RUN: llc < %s -mtriple=arm-none-musleabihf -meabi=5 -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI
%struct.my_s = type { [18 x i32] }

3
llvm/test/CodeGen/ARM/default-float-abi.ll
View File

@ -1,7 +1,10 @@
; RUN: llc -mtriple=armv7-linux-gnueabihf %s -o - | FileCheck %s --check-prefix=CHECK-HARD
; RUN: llc -mtriple=armv7-linux-musleabihf %s -o - | FileCheck %s --check-prefix=CHECK-HARD
; RUN: llc -mtriple=armv7-linux-eabihf %s -o - | FileCheck %s --check-prefix=CHECK-HARD
; RUN: llc -mtriple=armv7-linux-gnueabihf -float-abi=soft %s -o - | FileCheck %s --check-prefix=CHECK-SOFT
; RUN: llc -mtriple=armv7-linux-musleabihf -float-abi=soft %s -o - | FileCheck %s --check-prefix=CHECK-SOFT
; RUN: llc -mtriple=armv7-linux-gnueabi %s -o - | FileCheck %s --check-prefix=CHECK-SOFT
; RUN: llc -mtriple=armv7-linux-musleabi %s -o - | FileCheck %s --check-prefix=CHECK-SOFT
; RUN: llc -mtriple=armv7-linux-eabi -float-abi=hard %s -o - | FileCheck %s --check-prefix=CHECK-HARD
; RUN: llc -mtriple=thumbv7-apple-ios6.0 %s -o - | FileCheck %s --check-prefix=CHECK-SOFT

1
llvm/test/CodeGen/ARM/divmod-eabi.ll
View File

@ -3,6 +3,7 @@
; All "eabi" (Bare, GNU and Android) must lower SREM/UREM to __aeabi_{u,i}divmod
; RUN: llc -mtriple armv7-linux-androideabi %s -o - | FileCheck %s --check-prefix=EABI
; RUN: llc -mtriple armv7-linux-gnueabi %s -o - | FileCheck %s --check-prefix=EABI
; RUN: llc -mtriple armv7-linux-musleabi %s -o - | FileCheck %s --check-prefix=EABI
; RUN: llc -mtriple armv7-apple-darwin %s -o - | FileCheck %s --check-prefix=DARWIN
; FIXME: long-term, we will use "-apple-macho" and won't need this exception:
; RUN: llc -mtriple armv7-apple-darwin-eabi %s -o - | FileCheck %s --check-prefix=DARWIN

16
llvm/test/CodeGen/ARM/ehabi.ll
View File

@ -34,6 +34,22 @@
; RUN: -filetype=asm -o - %s \
; RUN: | FileCheck %s --check-prefix=CHECK-V7-FP-ELIM
; RUN: llc -mtriple arm-unknown-linux-musleabi \
; RUN: -disable-fp-elim -filetype=asm -o - %s \
; RUN: | FileCheck %s --check-prefix=CHECK-FP
; RUN: llc -mtriple arm-unknown-linux-musleabi \
; RUN: -filetype=asm -o - %s \
; RUN: | FileCheck %s --check-prefix=CHECK-FP-ELIM
; RUN: llc -mtriple armv7-unknown-linux-musleabi \
; RUN: -disable-fp-elim -filetype=asm -o - %s \
; RUN: | FileCheck %s --check-prefix=CHECK-V7-FP
; RUN: llc -mtriple armv7-unknown-linux-musleabi \
; RUN: -filetype=asm -o - %s \
; RUN: | FileCheck %s --check-prefix=CHECK-V7-FP-ELIM
; RUN: llc -mtriple arm-unknown-linux-androideabi \
; RUN: -disable-fp-elim -filetype=asm -o - %s \
; RUN: | FileCheck %s --check-prefix=CHECK-FP

2
llvm/test/CodeGen/ARM/fp16.ll
View File

@ -1,8 +1,10 @@
; RUN: llc -mtriple=armv7a--none-eabi < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-HARDFLOAT-EABI %s
; RUN: llc -mtriple=armv7a--none-gnueabi < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-HARDFLOAT-GNU %s
; RUN: llc -mtriple=armv7a--none-musleabi < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-HARDFLOAT-GNU %s
; RUN: llc -mtriple=armv8-eabihf < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-ARMV8 %s
; RUN: llc -mtriple=thumbv7m-eabi < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-SOFTFLOAT-EABI %s
; RUN: llc -mtriple=thumbv7m-gnueabi < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-SOFTFLOAT-GNU %s
; RUN: llc -mtriple=thumbv7m-musleabi < %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-SOFTFLOAT-GNU %s
;; +fp16 is special: it has f32->f16 (unlike v7), but not f64->f16 (unlike v8).
;; This exposes unsafe-fp-math optimization opportunities; test that.

2
llvm/test/CodeGen/ARM/memfunc.ll
View File

@ -5,6 +5,8 @@
; RUN: llc < %s -mtriple=arm-none-androideabi -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-EABI --check-prefix=CHECK
; RUN: llc < %s -mtriple=arm-none-gnueabi -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI --check-prefix=CHECK
; RUN: llc < %s -mtriple=arm-none-gnueabihf -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI --check-prefix=CHECK
; RUN: llc < %s -mtriple=arm-none-musleabi -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI --check-prefix=CHECK
; RUN: llc < %s -mtriple=arm-none-musleabihf -disable-post-ra -o - | FileCheck %s --check-prefix=CHECK-GNUEABI --check-prefix=CHECK
define void @f1(i8* %dest, i8* %src) {
entry:

6
llvm/unittests/ADT/TripleTest.cpp
View File

@ -141,6 +141,12 @@ TEST(TripleTest, ParsedIDs) {
EXPECT_EQ(Triple::UnknownOS, T.getOS());
EXPECT_EQ(Triple::EABI, T.getEnvironment());
T = Triple("arm-none-linux-musleabi");
EXPECT_EQ(Triple::arm, T.getArch());
EXPECT_EQ(Triple::UnknownVendor, T.getVendor());
EXPECT_EQ(Triple::Linux, T.getOS());
EXPECT_EQ(Triple::MuslEABI, T.getEnvironment());
T = Triple("armv6hl-none-linux-gnueabi");
EXPECT_EQ(Triple::arm, T.getArch());
EXPECT_EQ(Triple::Linux, T.getOS());