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-rw-r--r--contrib/llvm-project/clang/lib/Driver/ToolChains/Arch/AArch64.cpp289
1 files changed, 105 insertions, 184 deletions
diff --git a/contrib/llvm-project/clang/lib/Driver/ToolChains/Arch/AArch64.cpp b/contrib/llvm-project/clang/lib/Driver/ToolChains/Arch/AArch64.cpp
index 0e354a49b59a..0cf96bb5c9cb 100644
--- a/contrib/llvm-project/clang/lib/Driver/ToolChains/Arch/AArch64.cpp
+++ b/contrib/llvm-project/clang/lib/Driver/ToolChains/Arch/AArch64.cpp
@@ -7,12 +7,13 @@
//===----------------------------------------------------------------------===//
#include "AArch64.h"
+#include "../CommonArgs.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/Options.h"
#include "llvm/Option/ArgList.h"
-#include "llvm/Support/TargetParser.h"
-#include "llvm/Support/Host.h"
+#include "llvm/TargetParser/AArch64TargetParser.h"
+#include "llvm/TargetParser/Host.h"
using namespace clang::driver;
using namespace clang::driver::tools;
@@ -37,6 +38,8 @@ std::string aarch64::getAArch64TargetCPU(const ArgList &Args,
CPU = Mcpu.split("+").first.lower();
}
+ CPU = llvm::AArch64::resolveCPUAlias(CPU);
+
// Handle CPU name is 'native'.
if (CPU == "native")
return std::string(llvm::sys::getHostCPUName());
@@ -50,13 +53,17 @@ std::string aarch64::getAArch64TargetCPU(const ArgList &Args,
return "apple-m1";
}
+ if (Triple.isXROS()) {
+ // The xrOS simulator runs on M1 as well, it should have been covered above.
+ assert(!Triple.isSimulatorEnvironment() && "xrossim should be mac-like");
+ return "apple-a12";
+ }
// arm64e requires v8.3a and only runs on apple-a12 and later CPUs.
if (Triple.isArm64e())
return "apple-a12";
- // Make sure we pick the appropriate Apple CPU if -arch is used or when
- // targetting a Darwin OS.
- if (Args.getLastArg(options::OPT_arch) || Triple.isOSDarwin())
+ // Make sure we pick the appropriate Apple CPU when targetting a Darwin OS.
+ if (Triple.isOSDarwin())
return Triple.getArch() == llvm::Triple::aarch64_32 ? "apple-s4"
: "apple-a7";
@@ -65,71 +72,68 @@ std::string aarch64::getAArch64TargetCPU(const ArgList &Args,
// Decode AArch64 features from string like +[no]featureA+[no]featureB+...
static bool DecodeAArch64Features(const Driver &D, StringRef text,
- std::vector<StringRef> &Features,
- llvm::AArch64::ArchKind ArchKind) {
+ llvm::AArch64::ExtensionSet &Extensions) {
SmallVector<StringRef, 8> Split;
text.split(Split, StringRef("+"), -1, false);
for (StringRef Feature : Split) {
- StringRef FeatureName = llvm::AArch64::getArchExtFeature(Feature);
- if (!FeatureName.empty())
- Features.push_back(FeatureName);
- else if (Feature == "neon" || Feature == "noneon")
+ if (Feature == "neon" || Feature == "noneon") {
D.Diag(clang::diag::err_drv_no_neon_modifier);
- else
+ continue;
+ }
+ if (!Extensions.parseModifier(Feature))
return false;
-
- // +sve implies +f32mm if the base architecture is v8.6A or v8.7A
- // it isn't the case in general that sve implies both f64mm and f32mm
- if ((ArchKind == llvm::AArch64::ArchKind::ARMV8_6A ||
- ArchKind == llvm::AArch64::ArchKind::ARMV8_7A) && Feature == "sve")
- Features.push_back("+f32mm");
}
+
return true;
}
// Check if the CPU name and feature modifiers in -mcpu are legal. If yes,
// decode CPU and feature.
static bool DecodeAArch64Mcpu(const Driver &D, StringRef Mcpu, StringRef &CPU,
- std::vector<StringRef> &Features) {
+ llvm::AArch64::ExtensionSet &Extensions) {
std::pair<StringRef, StringRef> Split = Mcpu.split("+");
CPU = Split.first;
- llvm::AArch64::ArchKind ArchKind = llvm::AArch64::ArchKind::ARMV8A;
if (CPU == "native")
CPU = llvm::sys::getHostCPUName();
if (CPU == "generic") {
- Features.push_back("+neon");
+ Extensions.enable(llvm::AArch64::AEK_SIMD);
} else {
- ArchKind = llvm::AArch64::parseCPUArch(CPU);
- if (!llvm::AArch64::getArchFeatures(ArchKind, Features))
+ const std::optional<llvm::AArch64::CpuInfo> CpuInfo =
+ llvm::AArch64::parseCpu(CPU);
+ if (!CpuInfo)
return false;
- uint64_t Extension = llvm::AArch64::getDefaultExtensions(CPU, ArchKind);
- if (!llvm::AArch64::getExtensionFeatures(Extension, Features))
- return false;
- }
+ Extensions.addCPUDefaults(*CpuInfo);
+ }
- if (Split.second.size() &&
- !DecodeAArch64Features(D, Split.second, Features, ArchKind))
- return false;
+ if (Split.second.size() &&
+ !DecodeAArch64Features(D, Split.second, Extensions))
+ return false;
- return true;
+ return true;
}
static bool
getAArch64ArchFeaturesFromMarch(const Driver &D, StringRef March,
const ArgList &Args,
- std::vector<StringRef> &Features) {
+ llvm::AArch64::ExtensionSet &Extensions) {
std::string MarchLowerCase = March.lower();
std::pair<StringRef, StringRef> Split = StringRef(MarchLowerCase).split("+");
- llvm::AArch64::ArchKind ArchKind = llvm::AArch64::parseArch(Split.first);
- if (ArchKind == llvm::AArch64::ArchKind::INVALID ||
- !llvm::AArch64::getArchFeatures(ArchKind, Features) ||
- (Split.second.size() &&
- !DecodeAArch64Features(D, Split.second, Features, ArchKind)))
+ const llvm::AArch64::ArchInfo *ArchInfo =
+ llvm::AArch64::parseArch(Split.first);
+ if (Split.first == "native")
+ ArchInfo = llvm::AArch64::getArchForCpu(llvm::sys::getHostCPUName().str());
+ if (!ArchInfo)
+ return false;
+
+ Extensions.addArchDefaults(*ArchInfo);
+
+ if ((Split.second.size() &&
+ !DecodeAArch64Features(D, Split.second, Extensions)))
return false;
return true;
@@ -138,10 +142,10 @@ getAArch64ArchFeaturesFromMarch(const Driver &D, StringRef March,
static bool
getAArch64ArchFeaturesFromMcpu(const Driver &D, StringRef Mcpu,
const ArgList &Args,
- std::vector<StringRef> &Features) {
+ llvm::AArch64::ExtensionSet &Extensions) {
StringRef CPU;
std::string McpuLowerCase = Mcpu.lower();
- if (!DecodeAArch64Mcpu(D, McpuLowerCase, CPU, Features))
+ if (!DecodeAArch64Mcpu(D, McpuLowerCase, CPU, Extensions))
return false;
return true;
@@ -152,17 +156,17 @@ getAArch64MicroArchFeaturesFromMtune(const Driver &D, StringRef Mtune,
const ArgList &Args,
std::vector<StringRef> &Features) {
std::string MtuneLowerCase = Mtune.lower();
- // Check CPU name is valid
- std::vector<StringRef> MtuneFeatures;
+ // Check CPU name is valid, but ignore any extensions on it.
+ llvm::AArch64::ExtensionSet Extensions;
StringRef Tune;
- if (!DecodeAArch64Mcpu(D, MtuneLowerCase, Tune, MtuneFeatures))
+ if (!DecodeAArch64Mcpu(D, MtuneLowerCase, Tune, Extensions))
return false;
// Handle CPU name is 'native'.
if (MtuneLowerCase == "native")
MtuneLowerCase = std::string(llvm::sys::getHostCPUName());
if (MtuneLowerCase == "cyclone" ||
- StringRef(MtuneLowerCase).startswith("apple")) {
+ StringRef(MtuneLowerCase).starts_with("apple")) {
Features.push_back("+zcm");
Features.push_back("+zcz");
}
@@ -174,7 +178,8 @@ getAArch64MicroArchFeaturesFromMcpu(const Driver &D, StringRef Mcpu,
const ArgList &Args,
std::vector<StringRef> &Features) {
StringRef CPU;
- std::vector<StringRef> DecodedFeature;
+ // Check CPU name is valid, but ignore any extensions on it.
+ llvm::AArch64::ExtensionSet DecodedFeature;
std::string McpuLowerCase = Mcpu.lower();
if (!DecodeAArch64Mcpu(D, McpuLowerCase, CPU, DecodedFeature))
return false;
@@ -189,27 +194,31 @@ void aarch64::getAArch64TargetFeatures(const Driver &D,
bool ForAS) {
Arg *A;
bool success = true;
- // Enable NEON by default.
- Features.push_back("+neon");
llvm::StringRef WaMArch;
+ llvm::AArch64::ExtensionSet Extensions;
if (ForAS)
for (const auto *A :
Args.filtered(options::OPT_Wa_COMMA, options::OPT_Xassembler))
for (StringRef Value : A->getValues())
- if (Value.startswith("-march="))
+ if (Value.starts_with("-march="))
WaMArch = Value.substr(7);
// Call getAArch64ArchFeaturesFromMarch only if "-Wa,-march=" or
// "-Xassembler -march" is detected. Otherwise it may return false
// and causes Clang to error out.
if (!WaMArch.empty())
- success = getAArch64ArchFeaturesFromMarch(D, WaMArch, Args, Features);
+ success = getAArch64ArchFeaturesFromMarch(D, WaMArch, Args, Extensions);
else if ((A = Args.getLastArg(options::OPT_march_EQ)))
- success = getAArch64ArchFeaturesFromMarch(D, A->getValue(), Args, Features);
+ success =
+ getAArch64ArchFeaturesFromMarch(D, A->getValue(), Args, Extensions);
else if ((A = Args.getLastArg(options::OPT_mcpu_EQ)))
- success = getAArch64ArchFeaturesFromMcpu(D, A->getValue(), Args, Features);
- else if (Args.hasArg(options::OPT_arch) || isCPUDeterminedByTriple(Triple))
+ success =
+ getAArch64ArchFeaturesFromMcpu(D, A->getValue(), Args, Extensions);
+ else if (isCPUDeterminedByTriple(Triple))
success = getAArch64ArchFeaturesFromMcpu(
- D, getAArch64TargetCPU(Args, Triple, A), Args, Features);
+ D, getAArch64TargetCPU(Args, Triple, A), Args, Extensions);
+ else
+ // Default to 'A' profile if the architecture is not specified.
+ success = getAArch64ArchFeaturesFromMarch(D, "armv8-a", Args, Extensions);
if (success && (A = Args.getLastArg(clang::driver::options::OPT_mtune_EQ)))
success =
@@ -217,36 +226,48 @@ void aarch64::getAArch64TargetFeatures(const Driver &D,
else if (success && (A = Args.getLastArg(options::OPT_mcpu_EQ)))
success =
getAArch64MicroArchFeaturesFromMcpu(D, A->getValue(), Args, Features);
- else if (success &&
- (Args.hasArg(options::OPT_arch) || isCPUDeterminedByTriple(Triple)))
+ else if (success && isCPUDeterminedByTriple(Triple))
success = getAArch64MicroArchFeaturesFromMcpu(
D, getAArch64TargetCPU(Args, Triple, A), Args, Features);
if (!success) {
- auto Diag = D.Diag(diag::err_drv_clang_unsupported);
+ auto Diag = D.Diag(diag::err_drv_unsupported_option_argument);
// If "-Wa,-march=" is used, 'WaMArch' will contain the argument's value,
// while 'A' is uninitialized. Only dereference 'A' in the other case.
if (!WaMArch.empty())
- Diag << "-march=" + WaMArch.str();
+ Diag << "-march=" << WaMArch;
else
- Diag << A->getAsString(Args);
+ Diag << A->getSpelling() << A->getValue();
}
+ // -mgeneral-regs-only disables all floating-point features.
if (Args.getLastArg(options::OPT_mgeneral_regs_only)) {
- Features.push_back("-fp-armv8");
- Features.push_back("-crypto");
- Features.push_back("-neon");
+ Extensions.disable(llvm::AArch64::AEK_FP);
+ }
+
+ // En/disable crc
+ if (Arg *A = Args.getLastArg(options::OPT_mcrc, options::OPT_mnocrc)) {
+ if (A->getOption().matches(options::OPT_mcrc))
+ Extensions.enable(llvm::AArch64::AEK_CRC);
+ else
+ Extensions.disable(llvm::AArch64::AEK_CRC);
}
+ // At this point all hardware features are decided, so convert the extensions
+ // set to a feature list.
+ Extensions.toLLVMFeatureList(Features);
+
if (Arg *A = Args.getLastArg(options::OPT_mtp_mode_EQ)) {
StringRef Mtp = A->getValue();
- if (Mtp == "el3")
+ if (Mtp == "el3" || Mtp == "tpidr_el3")
Features.push_back("+tpidr-el3");
- else if (Mtp == "el2")
+ else if (Mtp == "el2" || Mtp == "tpidr_el2")
Features.push_back("+tpidr-el2");
- else if (Mtp == "el1")
+ else if (Mtp == "el1" || Mtp == "tpidr_el1")
Features.push_back("+tpidr-el1");
- else if (Mtp != "el0")
+ else if (Mtp == "tpidrro_el0")
+ Features.push_back("+tpidrro-el0");
+ else if (Mtp != "el0" && Mtp != "tpidr_el0")
D.Diag(diag::err_drv_invalid_mtp) << A->getAsString(Args);
}
@@ -282,8 +303,8 @@ void aarch64::getAArch64TargetFeatures(const Driver &D,
DisableComdat = true;
continue;
}
- D.Diag(diag::err_invalid_sls_hardening)
- << Scope << A->getAsString(Args);
+ D.Diag(diag::err_drv_unsupported_option_argument)
+ << A->getSpelling() << Scope;
break;
}
}
@@ -297,124 +318,6 @@ void aarch64::getAArch64TargetFeatures(const Driver &D,
}
}
- // En/disable crc
- if (Arg *A = Args.getLastArg(options::OPT_mcrc, options::OPT_mnocrc)) {
- if (A->getOption().matches(options::OPT_mcrc))
- Features.push_back("+crc");
- else
- Features.push_back("-crc");
- }
-
- // Handle (arch-dependent) fp16fml/fullfp16 relationship.
- // FIXME: this fp16fml option handling will be reimplemented after the
- // TargetParser rewrite.
- const auto ItRNoFullFP16 = std::find(Features.rbegin(), Features.rend(), "-fullfp16");
- const auto ItRFP16FML = std::find(Features.rbegin(), Features.rend(), "+fp16fml");
- if (llvm::is_contained(Features, "+v8.4a")) {
- const auto ItRFullFP16 = std::find(Features.rbegin(), Features.rend(), "+fullfp16");
- if (ItRFullFP16 < ItRNoFullFP16 && ItRFullFP16 < ItRFP16FML) {
- // Only entangled feature that can be to the right of this +fullfp16 is -fp16fml.
- // Only append the +fp16fml if there is no -fp16fml after the +fullfp16.
- if (std::find(Features.rbegin(), ItRFullFP16, "-fp16fml") == ItRFullFP16)
- Features.push_back("+fp16fml");
- }
- else
- goto fp16_fml_fallthrough;
- } else {
-fp16_fml_fallthrough:
- // In both of these cases, putting the 'other' feature on the end of the vector will
- // result in the same effect as placing it immediately after the current feature.
- if (ItRNoFullFP16 < ItRFP16FML)
- Features.push_back("-fp16fml");
- else if (ItRNoFullFP16 > ItRFP16FML)
- Features.push_back("+fullfp16");
- }
-
- // FIXME: this needs reimplementation too after the TargetParser rewrite
- //
- // Context sensitive meaning of Crypto:
- // 1) For Arch >= ARMv8.4a: crypto = sm4 + sha3 + sha2 + aes
- // 2) For Arch <= ARMv8.3a: crypto = sha2 + aes
- const auto ItBegin = Features.begin();
- const auto ItEnd = Features.end();
- const auto ItRBegin = Features.rbegin();
- const auto ItREnd = Features.rend();
- const auto ItRCrypto = std::find(ItRBegin, ItREnd, "+crypto");
- const auto ItRNoCrypto = std::find(ItRBegin, ItREnd, "-crypto");
- const auto HasCrypto = ItRCrypto != ItREnd;
- const auto HasNoCrypto = ItRNoCrypto != ItREnd;
- const ptrdiff_t PosCrypto = ItRCrypto - ItRBegin;
- const ptrdiff_t PosNoCrypto = ItRNoCrypto - ItRBegin;
-
- bool NoCrypto = false;
- if (HasCrypto && HasNoCrypto) {
- if (PosNoCrypto < PosCrypto)
- NoCrypto = true;
- }
-
- if (std::find(ItBegin, ItEnd, "+v8.4a") != ItEnd) {
- if (HasCrypto && !NoCrypto) {
- // Check if we have NOT disabled an algorithm with something like:
- // +crypto, -algorithm
- // And if "-algorithm" does not occur, we enable that crypto algorithm.
- const bool HasSM4 = (std::find(ItBegin, ItEnd, "-sm4") == ItEnd);
- const bool HasSHA3 = (std::find(ItBegin, ItEnd, "-sha3") == ItEnd);
- const bool HasSHA2 = (std::find(ItBegin, ItEnd, "-sha2") == ItEnd);
- const bool HasAES = (std::find(ItBegin, ItEnd, "-aes") == ItEnd);
- if (HasSM4)
- Features.push_back("+sm4");
- if (HasSHA3)
- Features.push_back("+sha3");
- if (HasSHA2)
- Features.push_back("+sha2");
- if (HasAES)
- Features.push_back("+aes");
- } else if (HasNoCrypto) {
- // Check if we have NOT enabled a crypto algorithm with something like:
- // -crypto, +algorithm
- // And if "+algorithm" does not occur, we disable that crypto algorithm.
- const bool HasSM4 = (std::find(ItBegin, ItEnd, "+sm4") != ItEnd);
- const bool HasSHA3 = (std::find(ItBegin, ItEnd, "+sha3") != ItEnd);
- const bool HasSHA2 = (std::find(ItBegin, ItEnd, "+sha2") != ItEnd);
- const bool HasAES = (std::find(ItBegin, ItEnd, "+aes") != ItEnd);
- if (!HasSM4)
- Features.push_back("-sm4");
- if (!HasSHA3)
- Features.push_back("-sha3");
- if (!HasSHA2)
- Features.push_back("-sha2");
- if (!HasAES)
- Features.push_back("-aes");
- }
- } else {
- if (HasCrypto && !NoCrypto) {
- const bool HasSHA2 = (std::find(ItBegin, ItEnd, "-sha2") == ItEnd);
- const bool HasAES = (std::find(ItBegin, ItEnd, "-aes") == ItEnd);
- if (HasSHA2)
- Features.push_back("+sha2");
- if (HasAES)
- Features.push_back("+aes");
- } else if (HasNoCrypto) {
- const bool HasSHA2 = (std::find(ItBegin, ItEnd, "+sha2") != ItEnd);
- const bool HasAES = (std::find(ItBegin, ItEnd, "+aes") != ItEnd);
- const bool HasV82a = (std::find(ItBegin, ItEnd, "+v8.2a") != ItEnd);
- const bool HasV83a = (std::find(ItBegin, ItEnd, "+v8.3a") != ItEnd);
- const bool HasV84a = (std::find(ItBegin, ItEnd, "+v8.4a") != ItEnd);
- if (!HasSHA2)
- Features.push_back("-sha2");
- if (!HasAES)
- Features.push_back("-aes");
- if (HasV82a || HasV83a || HasV84a) {
- Features.push_back("-sm4");
- Features.push_back("-sha3");
- }
- }
- }
-
- auto V8_6Pos = llvm::find(Features, "+v8.6a");
- if (V8_6Pos != std::end(Features))
- V8_6Pos = Features.insert(std::next(V8_6Pos), {"+i8mm", "+bf16"});
-
if (Arg *A = Args.getLastArg(options::OPT_mno_unaligned_access,
options::OPT_munaligned_access)) {
if (A->getOption().matches(options::OPT_mno_unaligned_access))
@@ -526,4 +429,22 @@ fp16_fml_fallthrough:
if (Args.hasArg(options::OPT_mno_neg_immediates))
Features.push_back("+no-neg-immediates");
+
+ if (Arg *A = Args.getLastArg(options::OPT_mfix_cortex_a53_835769,
+ options::OPT_mno_fix_cortex_a53_835769)) {
+ if (A->getOption().matches(options::OPT_mfix_cortex_a53_835769))
+ Features.push_back("+fix-cortex-a53-835769");
+ else
+ Features.push_back("-fix-cortex-a53-835769");
+ } else if (Triple.isAndroid() || Triple.isOHOSFamily()) {
+ // Enabled A53 errata (835769) workaround by default on android
+ Features.push_back("+fix-cortex-a53-835769");
+ } else if (Triple.isOSFuchsia()) {
+ std::string CPU = getCPUName(D, Args, Triple);
+ if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
+ Features.push_back("+fix-cortex-a53-835769");
+ }
+
+ if (Args.getLastArg(options::OPT_mno_bti_at_return_twice))
+ Features.push_back("+no-bti-at-return-twice");
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 09:34:14 +0000