Author: fhahn Date: Fri Jul 6 03:49:59 2018 New Revision: 336429 URL: http://llvm.org/viewvc/llvm-project?rev=336429&view=rev Log: [Driver,AArch64] Add support for -mcpu=native.
This patches adds support for passing -mcpu=native for AArch64. It will get turned into the host CPU name, before we get the target features. CPU = native is handled in a similar fashion in getAArch64MicroArchFetauresFromMtune and getAArch64TargetCPU already. Having a good test case for this is hard, as it depends on the host CPU of the machine running the test. But we can check that native has been replaced with something else. When cross-compiling, we will get a CPU name from the host architecture and get ` the clang compiler does not support '-mcpu=native'` as error message, which seems reasonable to me. Reviewers: rengolin, peter.smith, dlj, javed.absar, t.p.northover Reviewed By: peter.smith Tags: #clang Differential Revision: https://reviews.llvm.org/D48931 Modified: cfe/trunk/lib/Driver/ToolChains/Arch/AArch64.cpp cfe/trunk/test/Driver/aarch64-cpus.c Modified: cfe/trunk/lib/Driver/ToolChains/Arch/AArch64.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/Arch/AArch64.cpp?rev=336429&r1=336428&r2=336429&view=diff ============================================================================== --- cfe/trunk/lib/Driver/ToolChains/Arch/AArch64.cpp (original) +++ cfe/trunk/lib/Driver/ToolChains/Arch/AArch64.cpp Fri Jul 6 03:49:59 2018 @@ -69,6 +69,9 @@ static bool DecodeAArch64Mcpu(const Driv std::pair<StringRef, StringRef> Split = Mcpu.split("+"); CPU = Split.first; + if (CPU == "native") + CPU = llvm::sys::getHostCPUName(); + if (CPU == "generic") { Features.push_back("+neon"); } else { Modified: cfe/trunk/test/Driver/aarch64-cpus.c URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/aarch64-cpus.c?rev=336429&r1=336428&r2=336429&view=diff ============================================================================== --- cfe/trunk/test/Driver/aarch64-cpus.c (original) +++ cfe/trunk/test/Driver/aarch64-cpus.c Fri Jul 6 03:49:59 2018 @@ -15,6 +15,11 @@ // ARM64-GENERIC: "-cc1"{{.*}} "-triple" "arm64{{.*}}" "-target-cpu" "generic" +// We cannot check much for -mcpu=native, but it should be replaced by either generic or a valid +// Arm cpu string, depending on the host. +// RUN: %clang -target arm64 -mcpu=native -### -c %s 2>&1 | FileCheck -check-prefix=ARM64-NATIVE %s +// ARM64-NATIVE-NOT: "-cc1"{{.*}} "-triple" "arm64{{.*}}" "-target-cpu" "native" + // RUN: %clang -target arm64-apple-darwin -arch arm64 -### -c %s 2>&1 | FileCheck -check-prefix=ARM64-DARWIN %s // ARM64-DARWIN: "-cc1"{{.*}} "-triple" "arm64{{.*}}" "-target-cpu" "cyclone" _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
