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| author | Craig Topper <craig.topper@intel.com> | 2018-09-07 16:58:57 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@intel.com> | 2018-09-07 16:58:57 +0000 |
| commit | 52a61fc2acb58d92291b8d47318638ae089dce6c (patch) | |
| tree | ff6899ee23727b5a16d5edd077efaf426c36ef48 /clang/lib/CodeGen | |
| parent | 72964ae99eb71cba6f6fd4c63c697010ec9a8772 (diff) | |
| download | bcm5719-llvm-52a61fc2acb58d92291b8d47318638ae089dce6c.tar.gz bcm5719-llvm-52a61fc2acb58d92291b8d47318638ae089dce6c.zip | |
[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
Diffstat (limited to 'clang/lib/CodeGen')
| -rw-r--r-- | clang/lib/CodeGen/CGBuiltin.cpp | 35 |
1 files changed, 35 insertions, 0 deletions
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: |
