[Driver][AArch64] Simplify -mtune
authorFangrui Song <i@maskray.me>
Fri, 22 Jul 2022 21:19:27 +0000 (14:19 -0700)
committerFangrui Song <i@maskray.me>
Fri, 22 Jul 2022 21:19:27 +0000 (14:19 -0700)
commit475e526d85003404ba521e15f8acef1b439fb910
tree88727b1a551ed32bddf7caec2e2216de86a3474b
parentff1920d106b5286085eb50233a444154a653b0d0
[Driver][AArch64] Simplify -mtune

llvm::sys::getHostCPUName()'s return value is not empty. `-mtune=` (empty value)
has caused a driver error. So we can omit `!TuneCPU.empty()` check.
clang/lib/Driver/ToolChains/Clang.cpp