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-rw-r--r--lib/Basic/Targets/AArch64.cpp31
1 files changed, 27 insertions, 4 deletions
diff --git a/lib/Basic/Targets/AArch64.cpp b/lib/Basic/Targets/AArch64.cpp
index 62919a02dc..120a0e2d4e 100644
--- a/lib/Basic/Targets/AArch64.cpp
+++ b/lib/Basic/Targets/AArch64.cpp
@@ -1,9 +1,8 @@
//===--- AArch64.cpp - Implement AArch64 target feature support -----------===//
//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
@@ -50,6 +49,7 @@ AArch64TargetInfo::AArch64TargetInfo(const llvm::Triple &Triple,
// All AArch64 implementations support ARMv8 FP, which makes half a legal type.
HasLegalHalfType = true;
+ HasFloat16 = true;
LongWidth = LongAlign = PointerWidth = PointerAlign = 64;
MaxVectorAlign = 128;
@@ -194,6 +194,9 @@ void AArch64TargetInfo::getTargetDefines(const LangOptions &Opts,
if (HasDotProd)
Builder.defineMacro("__ARM_FEATURE_DOTPROD", "1");
+ if (HasMTE)
+ Builder.defineMacro("__ARM_FEATURE_MEMORY_TAGGING", "1");
+
if ((FPU & NeonMode) && HasFP16FML)
Builder.defineMacro("__ARM_FEATURE_FP16FML", "1");
@@ -235,6 +238,7 @@ bool AArch64TargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
HasFullFP16 = 0;
HasDotProd = 0;
HasFP16FML = 0;
+ HasMTE = 0;
ArchKind = llvm::AArch64::ArchKind::ARMV8A;
for (const auto &Feature : Features) {
@@ -258,6 +262,8 @@ bool AArch64TargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
HasDotProd = 1;
if (Feature == "+fp16fml")
HasFP16FML = 1;
+ if (Feature == "+mte")
+ HasMTE = 1;
}
setDataLayout();
@@ -545,6 +551,23 @@ MicrosoftARM64TargetInfo::getCallingConvKind(bool ClangABICompat4) const {
return CCK_MicrosoftWin64;
}
+unsigned MicrosoftARM64TargetInfo::getMinGlobalAlign(uint64_t TypeSize) const {
+ unsigned Align = WindowsARM64TargetInfo::getMinGlobalAlign(TypeSize);
+
+ // MSVC does size based alignment for arm64 based on alignment section in
+ // below document, replicate that to keep alignment consistent with object
+ // files compiled by MSVC.
+ // https://docs.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions
+ if (TypeSize >= 512) { // TypeSize >= 64 bytes
+ Align = std::max(Align, 128u); // align type at least 16 bytes
+ } else if (TypeSize >= 64) { // TypeSize >= 8 bytes
+ Align = std::max(Align, 64u); // align type at least 8 butes
+ } else if (TypeSize >= 16) { // TypeSize >= 2 bytes
+ Align = std::max(Align, 32u); // align type at least 4 bytes
+ }
+ return Align;
+}
+
MinGWARM64TargetInfo::MinGWARM64TargetInfo(const llvm::Triple &Triple,
const TargetOptions &Opts)
: WindowsARM64TargetInfo(Triple, Opts) {