diff options
| -rw-r--r-- | clang/include/clang/Basic/BuiltinsX86.def | 1 | ||||
| -rw-r--r-- | clang/lib/CodeGen/CGBuiltin.cpp | 12 | ||||
| -rw-r--r-- | clang/test/CodeGen/builtin-cpu-supports.c | 4 |
3 files changed, 14 insertions, 3 deletions
diff --git a/clang/include/clang/Basic/BuiltinsX86.def b/clang/include/clang/Basic/BuiltinsX86.def index af9796e54bd..f39048c1a56 100644 --- a/clang/include/clang/Basic/BuiltinsX86.def +++ b/clang/include/clang/Basic/BuiltinsX86.def @@ -32,6 +32,7 @@ // Miscellaneous builtin for checking x86 cpu features. // TODO: Make this somewhat generic so that other backends // can use it? +BUILTIN(__builtin_cpu_init, "v", "n") BUILTIN(__builtin_cpu_supports, "bcC*", "nc") BUILTIN(__builtin_cpu_is, "bcC*", "nc") diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp index 585c27c1811..9ced44b2e0e 100644 --- a/clang/lib/CodeGen/CGBuiltin.cpp +++ b/clang/lib/CodeGen/CGBuiltin.cpp @@ -7404,9 +7404,6 @@ static Value *EmitX86CpuIs(CodeGenFunction &CGF, const CallExpr *E) { Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID, const CallExpr *E) { - if (BuiltinID == X86::BI__builtin_cpu_is) - return EmitX86CpuIs(*this, E); - SmallVector<Value*, 4> Ops; // Find out if any arguments are required to be integer constant expressions. @@ -7457,6 +7454,15 @@ Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID, switch (BuiltinID) { default: return nullptr; + case X86::BI__builtin_cpu_init: { + llvm::FunctionType *FTy = llvm::FunctionType::get(VoidTy, + /*Variadic*/false); + llvm::Constant *Func = CGM.CreateRuntimeFunction(FTy, + "__cpu_indicator_init"); + return Builder.CreateCall(Func); + } + case X86::BI__builtin_cpu_is: + return EmitX86CpuIs(*this, E); case X86::BI__builtin_cpu_supports: { const Expr *FeatureExpr = E->getArg(0)->IgnoreParenCasts(); StringRef FeatureStr = cast<StringLiteral>(FeatureExpr)->getString(); diff --git a/clang/test/CodeGen/builtin-cpu-supports.c b/clang/test/CodeGen/builtin-cpu-supports.c index 96813923f27..b70f4aca9d4 100644 --- a/clang/test/CodeGen/builtin-cpu-supports.c +++ b/clang/test/CodeGen/builtin-cpu-supports.c @@ -5,6 +5,10 @@ extern void a(const char *); int main() { + __builtin_cpu_init(); + + // CHECK: call void @__cpu_indicator_init + if (__builtin_cpu_supports("sse4.2")) a("sse4.2"); |
