Express the number of ULPs in fpaccuracy metadata as a real rather than a

rational number, eg as 2.5 rather than 5, 2.  OK'd by Peter Collingbourne.

llvm-svn: 154388

1 files changed, 4 insertions, 7 deletions

diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index 0efb50884cc..dbf41f38b8f 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -3001,16 +3001,13 @@ RValue CodeGenFunction::EmitAtomicExpr(AtomicExpr *E, llvm::Value *Dest) {
   return ConvertTempToRValue(*this, E->getType(), OrigDest);
 }
 
-void CodeGenFunction::SetFPAccuracy(llvm::Value *Val, unsigned AccuracyN,
-                                    unsigned AccuracyD) {
+void CodeGenFunction::SetFPAccuracy(llvm::Value *Val, float Accuracy) {
   assert(Val->getType()->isFPOrFPVectorTy());
-  if (!AccuracyN || !isa<llvm::Instruction>(Val))
+  if (Accuracy == 0.0 || !isa<llvm::Instruction>(Val))
     return;
 
-  llvm::Value *Vals[2];
-  Vals[0] = llvm::ConstantInt::get(Int32Ty, AccuracyN);
-  Vals[1] = llvm::ConstantInt::get(Int32Ty, AccuracyD);
-  llvm::MDNode *Node = llvm::MDNode::get(getLLVMContext(), Vals);
+  llvm::Value *ULPs = llvm::ConstantFP::get(Builder.getFloatTy(), Accuracy);
+  llvm::MDNode *Node = llvm::MDNode::get(getLLVMContext(), ULPs);
 
   cast<llvm::Instruction>(Val)->setMetadata(llvm::LLVMContext::MD_fpaccuracy,
                                             Node);