From: Craig Topper <craig.topper@gmail.com>
Date: Sun, 2 Oct 2016 06:13:43 +0000 (+0000)
Subject: [X86] Don't set i64 ADDC/ADDE/SUBC/SUBE as Custom if the target isn't 64-bit. This... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=a8c3c60282e72753981b0e88c351821911476dc5;p=llvm

[X86] Don't set i64 ADDC/ADDE/SUBC/SUBE as Custom if the target isn't 64-bit. This way we don't have to catch them and do nothing with them in ReplaceNodeResults.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283066 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index e5de78fd8f2..1bece04a38d 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -286,7 +286,11 @@ X86TargetLowering::X86TargetLowering(const X86TargetMachine &TM,
     setOperationAction(ISD::UDIV, VT, Expand);
     setOperationAction(ISD::SREM, VT, Expand);
     setOperationAction(ISD::UREM, VT, Expand);
+  }
 
+  for (auto VT : { MVT::i8, MVT::i16, MVT::i32, MVT::i64 }) {
+    if (VT == MVT::i64 && !Subtarget.is64Bit())
+      continue;
     // Add/Sub overflow ops with MVT::Glues are lowered to EFLAGS dependences.
     setOperationAction(ISD::ADDC, VT, Custom);
     setOperationAction(ISD::ADDE, VT, Custom);
@@ -22152,13 +22156,6 @@ void X86TargetLowering::ReplaceNodeResults(SDNode *N,
     Results.push_back(DAG.getNode(N->getOpcode(), dl, MVT::v4f32, LHS, RHS));
     return;
   }
-  case ISD::SIGN_EXTEND_INREG:
-  case ISD::ADDC:
-  case ISD::ADDE:
-  case ISD::SUBC:
-  case ISD::SUBE:
-    // We don't want to expand or promote these.
-    return;
   case ISD::SDIV:
   case ISD::UDIV:
   case ISD::SREM: