https://github.com/neildhickey created
https://github.com/llvm/llvm-project/pull/97749
…info
This pull request adds code to call getHostCPUInfo into the AArch64 Target
Parser to query the cpuinfo for the device in the case where we are compiling
with -mcpu=native
>From c942cb269560c6472a814e2d31f1545c6b80a890 Mon Sep 17 00:00:00 2001
From: Neil Hickey <nhic...@nvidia.com>
Date: Wed, 3 Jul 2024 07:22:46 -0700
Subject: [PATCH] [AArch64] Add getHostCPUFeatures to query for enabled
features in cpuinfo
---
clang/lib/Driver/ToolChains/Arch/AArch64.cpp | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/clang/lib/Driver/ToolChains/Arch/AArch64.cpp
b/clang/lib/Driver/ToolChains/Arch/AArch64.cpp
index ec248b80251ea..2862c297622fa 100644
--- a/clang/lib/Driver/ToolChains/Arch/AArch64.cpp
+++ b/clang/lib/Driver/ToolChains/Arch/AArch64.cpp
@@ -445,4 +445,21 @@ void aarch64::getAArch64TargetFeatures(const Driver &D,
if (Args.getLastArg(options::OPT_mno_bti_at_return_twice))
Features.push_back("+no-bti-at-return-twice");
+
+ // Parse AArch64 CPU Features
+ const Arg *CPUArg = Args.getLastArg(options::OPT_mcpu_EQ);
+ StringRef CPUName;
+
+ if (CPUArg) {
+ CPUName = CPUArg->getValue();
+ if (CPUName == "native") {
+ llvm::StringMap<bool> HostFeatures;
+ if (llvm::sys::getHostCPUFeatures(HostFeatures)) {
+ for (auto &F : HostFeatures) {
+ Features.push_back(
+ Args.MakeArgString((F.second ? "+" : "-") + F.first()));
+ }
+ }
+ }
+ }
}
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