Late evaluation of the fast-math vectorization requirement.

This patch moves the verification of fast-math to just before vectorization is done. This way we can tell clang to append the command line options would that allow floating-point commutativity. Specifically those are enableing fast-math or specifying a loop hint. 

llvm-svn: 244489

1 files changed, 5 insertions, 0 deletions

diff --git a/llvm/lib/IR/LLVMContext.cpp b/llvm/lib/IR/LLVMContext.cpp
index 59680f5..803d24b 100644
--- a/llvm/lib/IR/LLVMContext.cpp
+++ b/llvm/lib/IR/LLVMContext.cpp
@@ -199,6 +199,11 @@ static bool isDiagnosticEnabled(const DiagnosticInfo &DI) {
     if (!cast<DiagnosticInfoOptimizationRemarkAnalysis>(DI).isEnabled())
       return false;
     break;
+  case llvm::DK_OptimizationRemarkAnalysisFPCommute:
+    if (!cast<DiagnosticInfoOptimizationRemarkAnalysisFPCommute>(DI)
+             .isEnabled())
+      return false;
+    break;
   default:
     break;
   }