diff options
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp | 8 | ||||
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 5 | ||||
| -rw-r--r-- | llvm/test/CodeGen/X86/pr43157.ll | 20 |
3 files changed, 29 insertions, 4 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp index 9c99de35c89..6686b871582 100644 --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeFloatTypes.cpp @@ -895,8 +895,12 @@ bool DAGTypeLegalizer::CanSkipSoftenFloatOperand(SDNode *N, unsigned OpNo) { } SDValue DAGTypeLegalizer::SoftenFloatOp_BITCAST(SDNode *N) { - return DAG.getNode(ISD::BITCAST, SDLoc(N), N->getValueType(0), - GetSoftenedFloat(N->getOperand(0))); + SDValue Op0 = GetSoftenedFloat(N->getOperand(0)); + + if (Op0 == N->getOperand(0)) + return SDValue(); + + return DAG.getNode(ISD::BITCAST, SDLoc(N), N->getValueType(0), Op0); } SDValue DAGTypeLegalizer::SoftenFloatOp_COPY_TO_REG(SDNode *N) { diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 585ed886e4b..05de73de0de 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -45784,8 +45784,9 @@ X86TargetLowering::getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI, if (VConstraint && Subtarget.hasVLX()) return std::make_pair(0U, &X86::FR64XRegClass); return std::make_pair(0U, &X86::FR64RegClass); - // TODO: Handle f128 and i128 in FR128RegClass after it is tested well. - // Vector types. + // TODO: Handle i128 in FR128RegClass after it is tested well. + // Vector types and fp128. + case MVT::f128: case MVT::v16i8: case MVT::v8i16: case MVT::v4i32: diff --git a/llvm/test/CodeGen/X86/pr43157.ll b/llvm/test/CodeGen/X86/pr43157.ll new file mode 100644 index 00000000000..9510ed81bb3 --- /dev/null +++ b/llvm/test/CodeGen/X86/pr43157.ll @@ -0,0 +1,20 @@ +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py +; RUN: llc < %s -mtriple=x86_64-pc-linux -o - -mattr=+mmx | FileCheck %s + +define void @foo(fp128 %x) { +; CHECK-LABEL: foo: +; CHECK: # %bb.0: # %entry +; CHECK-NEXT: pushq %rax +; CHECK-NEXT: .cfi_def_cfa_offset 16 +; CHECK-NEXT: movaps {{.*}}(%rip), %xmm1 +; CHECK-NEXT: callq __multf3 +; CHECK-NEXT: #APP +; CHECK-NEXT: #NO_APP +; CHECK-NEXT: popq %rax +; CHECK-NEXT: .cfi_def_cfa_offset 8 +; CHECK-NEXT: retq +entry: + %mul = fmul fp128 %x, 0xL00000000000000003FFF800000000000 + tail call void asm sideeffect "", "x,~{dirflag},~{fpsr},~{flags}"(fp128 %mul) + ret void +} |
