[Transforms] Use asserts instead of ifs around llvm_unreachable. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256405 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Utils/IntegerDivision.cpp b/lib/Transforms/Utils/IntegerDivision.cpp
index add00e8d327d1586aff223d0cc892dfa95d93262..5687afa61e2a603f7f5e15f540c95ee99eeff598 100644 (file)
--- a/lib/Transforms/Utils/IntegerDivision.cpp
+++ b/lib/Transforms/Utils/IntegerDivision.cpp
@@ -380,14 +380,10 @@ bool llvm::expandRemainder(BinaryOperator *Rem) {
 
   IRBuilder<> Builder(Rem);
 
-  Type *RemTy = Rem->getType();
-  if (RemTy->isVectorTy())
-    llvm_unreachable("Div over vectors not supported");
-
-  unsigned RemTyBitWidth = RemTy->getIntegerBitWidth();
-
-  if (RemTyBitWidth != 32 && RemTyBitWidth != 64)
-    llvm_unreachable("Div of bitwidth other than 32 or 64 not supported");
+  assert(!Rem->getType()->isVectorTy() && "Div over vectors not supported");
+  assert((Rem->getType()->getIntegerBitWidth() == 32 ||
+          Rem->getType()->getIntegerBitWidth() == 64) &&
+         "Div of bitwidth other than 32 or 64 not supported");
 
   // First prepare the sign if it's a signed remainder
   if (Rem->getOpcode() == Instruction::SRem) {
@@ -440,14 +436,10 @@ bool llvm::expandDivision(BinaryOperator *Div) {
 
   IRBuilder<> Builder(Div);
 
-  Type *DivTy = Div->getType();
-  if (DivTy->isVectorTy())
-    llvm_unreachable("Div over vectors not supported");
-
-  unsigned DivTyBitWidth = DivTy->getIntegerBitWidth();
-
-  if (DivTyBitWidth != 32 && DivTyBitWidth != 64)
-    llvm_unreachable("Div of bitwidth other than 32 or 64 not supported");
+  assert(!Div->getType()->isVectorTy() && "Div over vectors not supported");
+  assert((Div->getType()->getIntegerBitWidth() == 32 ||
+          Div->getType()->getIntegerBitWidth() == 64) &&
+         "Div of bitwidth other than 32 or 64 not supported");
 
   // First prepare the sign if it's a signed division
   if (Div->getOpcode() == Instruction::SDiv) {
@@ -492,15 +484,14 @@ bool llvm::expandRemainderUpTo32Bits(BinaryOperator *Rem) {
           "Trying to expand remainder from a non-remainder function");
 
   Type *RemTy = Rem->getType();
-  if (RemTy->isVectorTy())
-    llvm_unreachable("Div over vectors not supported");
+  assert(!RemTy->isVectorTy() && "Div over vectors not supported");
 
   unsigned RemTyBitWidth = RemTy->getIntegerBitWidth();
 
-  if (RemTyBitWidth > 32) 
-    llvm_unreachable("Div of bitwidth greater than 32 not supported");
+  assert(RemTyBitWidth <= 32 &&
+         "Div of bitwidth greater than 32 not supported");
 
-  if (RemTyBitWidth == 32) 
+  if (RemTyBitWidth == 32)
     return expandRemainder(Rem);
 
   // If bitwidth smaller than 32 extend inputs, extend output and proceed
@@ -542,15 +533,13 @@ bool llvm::expandRemainderUpTo64Bits(BinaryOperator *Rem) {
           "Trying to expand remainder from a non-remainder function");
 
   Type *RemTy = Rem->getType();
-  if (RemTy->isVectorTy())
-    llvm_unreachable("Div over vectors not supported");
+  assert(!RemTy->isVectorTy() && "Div over vectors not supported");
 
   unsigned RemTyBitWidth = RemTy->getIntegerBitWidth();
 
-  if (RemTyBitWidth > 64) 
-    llvm_unreachable("Div of bitwidth greater than 64 not supported");
+  assert(RemTyBitWidth <= 64 && "Div of bitwidth greater than 64 not supported");
 
-  if (RemTyBitWidth == 64) 
+  if (RemTyBitWidth == 64)
     return expandRemainder(Rem);
 
   // If bitwidth smaller than 64 extend inputs, extend output and proceed
@@ -593,13 +582,11 @@ bool llvm::expandDivisionUpTo32Bits(BinaryOperator *Div) {
           "Trying to expand division from a non-division function");
 
   Type *DivTy = Div->getType();
-  if (DivTy->isVectorTy())
-    llvm_unreachable("Div over vectors not supported");
+  assert(!DivTy->isVectorTy() && "Div over vectors not supported");
 
   unsigned DivTyBitWidth = DivTy->getIntegerBitWidth();
 
-  if (DivTyBitWidth > 32)
-    llvm_unreachable("Div of bitwidth greater than 32 not supported");
+  assert(DivTyBitWidth <= 32 && "Div of bitwidth greater than 32 not supported");
 
   if (DivTyBitWidth == 32)
     return expandDivision(Div);
@@ -643,13 +630,12 @@ bool llvm::expandDivisionUpTo64Bits(BinaryOperator *Div) {
           "Trying to expand division from a non-division function");
 
   Type *DivTy = Div->getType();
-  if (DivTy->isVectorTy())
-    llvm_unreachable("Div over vectors not supported");
+  assert(!DivTy->isVectorTy() && "Div over vectors not supported");
 
   unsigned DivTyBitWidth = DivTy->getIntegerBitWidth();
 
-  if (DivTyBitWidth > 64)
-    llvm_unreachable("Div of bitwidth greater than 64 not supported");
+  assert(DivTyBitWidth <= 64 &&
+         "Div of bitwidth greater than 64 not supported");
 
   if (DivTyBitWidth == 64)
     return expandDivision(Div);