From 6b3f41ed88e8e440e11a4fbf20b6600529f80049 Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Tue, 16 May 2017 19:46:52 +0000
Subject: Vendor import of llvm trunk r303197:
 https://llvm.org/svn/llvm-project/llvm/trunk@303197

---
 lib/CodeGen/GlobalISel/LegalizerInfo.cpp | 10 +++++-----
 lib/CodeGen/GlobalISel/RegBankSelect.cpp |  9 +++++----
 lib/CodeGen/GlobalISel/Utils.cpp         |  8 ++++++++
 3 files changed, 18 insertions(+), 9 deletions(-)

(limited to 'lib/CodeGen/GlobalISel')

diff --git a/lib/CodeGen/GlobalISel/LegalizerInfo.cpp b/lib/CodeGen/GlobalISel/LegalizerInfo.cpp
index eaf4056e47ea..4d4591042296 100644
--- a/lib/CodeGen/GlobalISel/LegalizerInfo.cpp
+++ b/lib/CodeGen/GlobalISel/LegalizerInfo.cpp
@@ -162,7 +162,7 @@ bool LegalizerInfo::isLegal(const MachineInstr &MI,
   return std::get<0>(getAction(MI, MRI)) == Legal;
 }
 
-LLT LegalizerInfo::findLegalType(const InstrAspect &Aspect,
+Optional<LLT> LegalizerInfo::findLegalType(const InstrAspect &Aspect,
                                  LegalizeAction Action) const {
   switch(Action) {
   default:
@@ -174,20 +174,20 @@ LLT LegalizerInfo::findLegalType(const InstrAspect &Aspect,
     return Aspect.Type;
   case NarrowScalar: {
     return findLegalType(Aspect,
-                         [&](LLT Ty) -> LLT { return Ty.halfScalarSize(); });
+                         [](LLT Ty) -> LLT { return Ty.halfScalarSize(); });
   }
   case WidenScalar: {
-    return findLegalType(Aspect, [&](LLT Ty) -> LLT {
+    return findLegalType(Aspect, [](LLT Ty) -> LLT {
       return Ty.getSizeInBits() < 8 ? LLT::scalar(8) : Ty.doubleScalarSize();
     });
   }
   case FewerElements: {
     return findLegalType(Aspect,
-                         [&](LLT Ty) -> LLT { return Ty.halfElements(); });
+                         [](LLT Ty) -> LLT { return Ty.halfElements(); });
   }
   case MoreElements: {
     return findLegalType(Aspect,
-                         [&](LLT Ty) -> LLT { return Ty.doubleElements(); });
+                         [](LLT Ty) -> LLT { return Ty.doubleElements(); });
   }
   }
 }
diff --git a/lib/CodeGen/GlobalISel/RegBankSelect.cpp b/lib/CodeGen/GlobalISel/RegBankSelect.cpp
index 7248f50945d0..2eb3cdee694d 100644
--- a/lib/CodeGen/GlobalISel/RegBankSelect.cpp
+++ b/lib/CodeGen/GlobalISel/RegBankSelect.cpp
@@ -204,12 +204,8 @@ uint64_t RegBankSelect::getRepairCost(
     // TODO: use a dedicated constant for ImpossibleCost.
     if (Cost != UINT_MAX)
       return Cost;
-    assert(!TPC->isGlobalISelAbortEnabled() &&
-           "Legalization not available yet");
     // Return the legalization cost of that repairing.
   }
-  assert(!TPC->isGlobalISelAbortEnabled() &&
-         "Complex repairing not implemented yet");
   return UINT_MAX;
 }
 
@@ -452,6 +448,11 @@ RegBankSelect::MappingCost RegBankSelect::computeMapping(
 
     // Sums up the repairing cost of MO at each insertion point.
     uint64_t RepairCost = getRepairCost(MO, ValMapping);
+
+    // This is an impossible to repair cost.
+    if (RepairCost == UINT_MAX)
+      continue;
+
     // Bias used for splitting: 5%.
     const uint64_t PercentageForBias = 5;
     uint64_t Bias = (RepairCost * PercentageForBias + 99) / 100;
diff --git a/lib/CodeGen/GlobalISel/Utils.cpp b/lib/CodeGen/GlobalISel/Utils.cpp
index 3c93f8123b0d..254bdf10d804 100644
--- a/lib/CodeGen/GlobalISel/Utils.cpp
+++ b/lib/CodeGen/GlobalISel/Utils.cpp
@@ -110,3 +110,11 @@ Optional<int64_t> llvm::getConstantVRegVal(unsigned VReg,
 
   return None;
 }
+
+const llvm::ConstantFP* llvm::getConstantFPVRegVal(unsigned VReg,
+                                       const MachineRegisterInfo &MRI) {
+  MachineInstr *MI = MRI.getVRegDef(VReg);
+  if (TargetOpcode::G_FCONSTANT != MI->getOpcode())
+    return nullptr;
+  return MI->getOperand(1).getFPImm();
+}
-- 
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