Author: yhs
Date: Tue Aug 22 21:26:17 2017
New Revision: 311523
URL: http://llvm.org/viewvc/llvm-project?rev=311523&view=rev
Log:
bpf: add -mcpu=# support for bpf
-mcpu=# will support:
. generic: the default insn set
. v1: insn set version 1, the same as generic
. v2: insn set version 2, version 1 + additional jmp insns
. probe: the compiler will probe the underlying kernel to
decide proper version of insn set.
Examples:
$ clang -target bpf -mcpu=v1 -c t.c
$ clang -target bpf -mcpu=v2 -c t.c
$ clang -target bpf -mcpu=generic -c t.c
$ clang -target bpf -mcpu=probe -c t.c
$ clang -target bpf -mcpu=v3 -c t.c
error: unknown target CPU 'v3'
Signed-off-by: Yonghong Song <y...@fb.com>
Acked-by: Alexei Starovoitov <a...@kernel.org>
Modified:
cfe/trunk/lib/Basic/Targets/BPF.h
cfe/trunk/lib/Driver/ToolChains/CommonArgs.cpp
Modified: cfe/trunk/lib/Basic/Targets/BPF.h
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets/BPF.h?rev=311523&r1=311522&r2=311523&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/Targets/BPF.h (original)
+++ cfe/trunk/lib/Basic/Targets/BPF.h Tue Aug 22 21:26:17 2017
@@ -76,6 +76,18 @@ public:
return CCCR_OK;
}
}
+
+ bool isValidCPUName(StringRef Name) const override {
+ if (Name == "generic" || Name == "v1" ||
+ Name == "v2" || Name == "probe")
+ return true;
+ return false;
+ }
+
+ bool setCPU(const std::string &Name) override {
+ StringRef CPUName(Name);
+ return isValidCPUName(CPUName);
+ }
};
} // namespace targets
} // namespace clang
Modified: cfe/trunk/lib/Driver/ToolChains/CommonArgs.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/CommonArgs.cpp?rev=311523&r1=311522&r2=311523&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains/CommonArgs.cpp (original)
+++ cfe/trunk/lib/Driver/ToolChains/CommonArgs.cpp Tue Aug 22 21:26:17 2017
@@ -320,6 +320,8 @@ std::string tools::getCPUName(const ArgL
return TargetCPUName;
}
+ case llvm::Triple::bpfel:
+ case llvm::Triple::bpfeb:
case llvm::Triple::sparc:
case llvm::Triple::sparcel:
case llvm::Triple::sparcv9:
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