From 52a61fc2acb58d92291b8d47318638ae089dce6c Mon Sep 17 00:00:00 2001 From: Craig Topper Date: Fri, 7 Sep 2018 16:58:57 +0000 Subject: [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 --- clang/lib/CodeGen/CGBuiltin.cpp | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) (limited to 'clang/lib/CodeGen') diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp index 789f01cc822..a472bf59d71 100644 --- a/clang/lib/CodeGen/CGBuiltin.cpp +++ b/clang/lib/CodeGen/CGBuiltin.cpp @@ -10405,6 +10405,41 @@ Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID, 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: -- cgit v1.2.3