diff options
Diffstat (limited to 'lib/CodeGen/CGBuiltin.cpp')
| -rw-r--r-- | lib/CodeGen/CGBuiltin.cpp | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp index 3b4f8854a9ca..8f0c22d1f7ef 100644 --- a/lib/CodeGen/CGBuiltin.cpp +++ b/lib/CodeGen/CGBuiltin.cpp @@ -7923,6 +7923,7 @@ Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID, } // We can't handle 8-31 immediates with native IR, use the intrinsic. + // Except for predicates that create constants. Intrinsic::ID ID; switch (BuiltinID) { default: llvm_unreachable("Unsupported intrinsic!"); @@ -7930,12 +7931,32 @@ Value *CodeGenFunction::EmitX86BuiltinExpr(unsigned BuiltinID, ID = Intrinsic::x86_sse_cmp_ps; break; case X86::BI__builtin_ia32_cmpps256: + // _CMP_TRUE_UQ, _CMP_TRUE_US produce -1,-1... vector + // on any input and _CMP_FALSE_OQ, _CMP_FALSE_OS produce 0, 0... + if (CC == 0xf || CC == 0xb || CC == 0x1b || CC == 0x1f) { + Value *Constant = (CC == 0xf || CC == 0x1f) ? + llvm::Constant::getAllOnesValue(Builder.getInt32Ty()) : + llvm::Constant::getNullValue(Builder.getInt32Ty()); + Value *Vec = Builder.CreateVectorSplat( + Ops[0]->getType()->getVectorNumElements(), Constant); + return Builder.CreateBitCast(Vec, Ops[0]->getType()); + } ID = Intrinsic::x86_avx_cmp_ps_256; break; case X86::BI__builtin_ia32_cmppd: ID = Intrinsic::x86_sse2_cmp_pd; break; case X86::BI__builtin_ia32_cmppd256: + // _CMP_TRUE_UQ, _CMP_TRUE_US produce -1,-1... vector + // on any input and _CMP_FALSE_OQ, _CMP_FALSE_OS produce 0, 0... + if (CC == 0xf || CC == 0xb || CC == 0x1b || CC == 0x1f) { + Value *Constant = (CC == 0xf || CC == 0x1f) ? + llvm::Constant::getAllOnesValue(Builder.getInt64Ty()) : + llvm::Constant::getNullValue(Builder.getInt64Ty()); + Value *Vec = Builder.CreateVectorSplat( + Ops[0]->getType()->getVectorNumElements(), Constant); + return Builder.CreateBitCast(Vec, Ops[0]->getType()); + } ID = Intrinsic::x86_avx_cmp_pd_256; break; } |