srhines created this revision.
srhines added a reviewer: cfe-commits.
srhines added subscribers: danalbert, pirama.
Herald added subscribers: tberghammer, rengolin, aemerson.
This is only forced on if there is no non-Cortex-A53 CPU specified as
well. Android's platform and NDK builds need to assume that the code can
be run on Cortex-A53 devices, so we always enable the fix unless we know
specifically that the code is only running on a different kind of CPU.
https://reviews.llvm.org/D25761
Files:
lib/Driver/Tools.cpp
Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp
+++ lib/Driver/Tools.cpp
@@ -9677,6 +9677,14 @@
if (Arch == llvm::Triple::armeb || Arch == llvm::Triple::thumbeb)
arm::appendEBLinkFlags(Args, CmdArgs, Triple);
+ // Most Android ARM64 targets should enable the linker fix for erratum
+ // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
+ if (Arch == llvm::Triple::aarch64 && isAndroid) {
+ std::string CPU = getCPUName(Args, Triple);
+ if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
+ CmdArgs.push_back("--fix-cortex-a53-843419");
+ }
+
for (const auto &Opt : ToolChain.ExtraOpts)
CmdArgs.push_back(Opt.c_str());
Index: lib/Driver/Tools.cpp
===================================================================
--- lib/Driver/Tools.cpp
+++ lib/Driver/Tools.cpp
@@ -9677,6 +9677,14 @@
if (Arch == llvm::Triple::armeb || Arch == llvm::Triple::thumbeb)
arm::appendEBLinkFlags(Args, CmdArgs, Triple);
+ // Most Android ARM64 targets should enable the linker fix for erratum
+ // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
+ if (Arch == llvm::Triple::aarch64 && isAndroid) {
+ std::string CPU = getCPUName(Args, Triple);
+ if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
+ CmdArgs.push_back("--fix-cortex-a53-843419");
+ }
+
for (const auto &Opt : ToolChain.ExtraOpts)
CmdArgs.push_back(Opt.c_str());
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