[X86] Modify addcarry/subborrow builtins to emit an 2 result and intrinsic and an store instruction.
This is the clang side of D51769. The llvm intrinsics now return two results instead of using an out parameter.
Differential Revision: https://reviews.llvm.org/D51771
llvm-svn: 341678
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 789f01c..a472bf5 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -10405,6 +10405,41 @@
Ops[0]);
return Builder.CreateExtractValue(Call, 1);
}
+ case X86::BI__builtin_ia32_addcarryx_u32:
+ case X86::BI__builtin_ia32_addcarryx_u64:
+ case X86::BI__builtin_ia32_addcarry_u32:
+ case X86::BI__builtin_ia32_addcarry_u64:
+ case X86::BI__builtin_ia32_subborrow_u32:
+ case X86::BI__builtin_ia32_subborrow_u64: {
+ Intrinsic::ID IID;
+ switch (BuiltinID) {
+ default: llvm_unreachable("Unsupported intrinsic!");
+ case X86::BI__builtin_ia32_addcarryx_u32:
+ IID = Intrinsic::x86_addcarryx_u32;
+ break;
+ case X86::BI__builtin_ia32_addcarryx_u64:
+ IID = Intrinsic::x86_addcarryx_u64;
+ break;
+ case X86::BI__builtin_ia32_addcarry_u32:
+ IID = Intrinsic::x86_addcarry_u32;
+ break;
+ case X86::BI__builtin_ia32_addcarry_u64:
+ IID = Intrinsic::x86_addcarry_u64;
+ break;
+ case X86::BI__builtin_ia32_subborrow_u32:
+ IID = Intrinsic::x86_subborrow_u32;
+ break;
+ case X86::BI__builtin_ia32_subborrow_u64:
+ IID = Intrinsic::x86_subborrow_u64;
+ break;
+ }
+
+ Value *Call = Builder.CreateCall(CGM.getIntrinsic(IID),
+ { Ops[0], Ops[1], Ops[2] });
+ Builder.CreateDefaultAlignedStore(Builder.CreateExtractValue(Call, 1),
+ Ops[3]);
+ return Builder.CreateExtractValue(Call, 0);
+ }
case X86::BI__builtin_ia32_fpclassps128_mask:
case X86::BI__builtin_ia32_fpclassps256_mask: