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| author | Douglas Yung <douglas.yung@sony.com> | 2020-09-01 12:36:14 -0700 |
|---|---|---|
| committer | Douglas Yung <douglas.yung@sony.com> | 2020-09-01 12:37:47 -0700 |
| commit | b1f394862053867cdc6b2300e725e053504519d5 (patch) | |
| tree | 87271ceb6adbf43229961cae18513080f0bb6ea8 | |
| parent | 3e753ce1ab5288f1fa5fb03711474ac2800e2f14 (diff) | |
| download | llvm-b1f394862053867cdc6b2300e725e053504519d5.tar.gz | |
Do not emit "-tune-cpu generic" for PS4 platform
For the PS4, do not emit "-tune-cpu generic" since the platform only has 1 known CPU and we do not want to prevent optimizations by tuning for a generic rather than the specific processor it contains.
Reviewed By: probinson
Differential Revision: https://reviews.llvm.org/D86965
| -rw-r--r-- | clang/lib/Driver/ToolChains/Clang.cpp | 5 | ||||
| -rw-r--r-- | clang/test/Driver/ps4-cpu-defaults.cpp | 3 |
2 files changed, 5 insertions, 3 deletions
diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp index 976502c3ca73..3023c94bf10c 100644 --- a/clang/lib/Driver/ToolChains/Clang.cpp +++ b/clang/lib/Driver/ToolChains/Clang.cpp @@ -2075,9 +2075,10 @@ void Clang::AddX86TargetArgs(const ArgList &Args, // Handle -mtune. - // Default to "generic" unless -march is present. + // Default to "generic" unless -march is present or targetting the PS4. std::string TuneCPU; - if (!Args.hasArg(clang::driver::options::OPT_march_EQ)) + if (!Args.hasArg(clang::driver::options::OPT_march_EQ) && + !getToolChain().getTriple().isPS4CPU()) TuneCPU = "generic"; // Override based on -mtune. diff --git a/clang/test/Driver/ps4-cpu-defaults.cpp b/clang/test/Driver/ps4-cpu-defaults.cpp index 99547d4e02a2..46fa8897e6fa 100644 --- a/clang/test/Driver/ps4-cpu-defaults.cpp +++ b/clang/test/Driver/ps4-cpu-defaults.cpp @@ -1,6 +1,7 @@ // Check that on the PS4 we default to: -// -target-cpu btver2 and no exceptions +// -target-cpu btver2, no exceptions and not -tune-cpu generic // RUN: %clang -target x86_64-scei-ps4 -c %s -### 2>&1 | FileCheck %s // CHECK: "-target-cpu" "btver2" // CHECK-NOT: exceptions +// CHECK-NOT: "-tune-cpu" |