Add intrinsics for lzcnt and tzcnt instructions.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147263 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index 71d5156..2a467b5 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -2063,6 +2063,32 @@
switch (BuiltinID) {
default: return 0;
+ case X86::BI__builtin_clzs: {
+ Value *ArgValue = EmitScalarExpr(E->getArg(0));
+
+ llvm::Type *ArgType = ArgValue->getType();
+ Value *F = CGM.getIntrinsic(Intrinsic::ctlz, ArgType);
+
+ llvm::Type *ResultType = ConvertType(E->getType());
+ Value *Result = Builder.CreateCall2(F, ArgValue, Builder.getTrue());
+ if (Result->getType() != ResultType)
+ Result = Builder.CreateIntCast(Result, ResultType, /*isSigned*/true,
+ "cast");
+ return Result;
+ }
+ case X86::BI__builtin_ctzs: {
+ Value *ArgValue = EmitScalarExpr(E->getArg(0));
+
+ llvm::Type *ArgType = ArgValue->getType();
+ Value *F = CGM.getIntrinsic(Intrinsic::cttz, ArgType);
+
+ llvm::Type *ResultType = ConvertType(E->getType());
+ Value *Result = Builder.CreateCall2(F, ArgValue, Builder.getTrue());
+ if (Result->getType() != ResultType)
+ Result = Builder.CreateIntCast(Result, ResultType, /*isSigned*/true,
+ "cast");
+ return Result;
+ }
case X86::BI__builtin_ia32_pslldi128:
case X86::BI__builtin_ia32_psllqi128:
case X86::BI__builtin_ia32_psllwi128: