commit c587bee405a4c542488412541753f2e1126392cf
author Olivier Sallenave <ohsallen@us.ibm.com> Wed Apr 22 14:07:26 2015 +0000
committer Olivier Sallenave <ohsallen@us.ibm.com> Wed Apr 22 14:07:26 2015 +0000
tree e48d3df7ab1f330587693f10a04fd4b5064c9f64
parent 1d67713b443e640a3d7dab9a955c73b4452c5316

Fixed logic to enable complex FMA formation.

llvm-svn: 235508

llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 4b98da7..f85582d 100644
--- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -7164,7 +7164,7 @@
                                      N0));
     }
 
-    if (LookThroughFPExt) {
+    if (UnsafeFPMath && LookThroughFPExt) {
       // fold (fadd (fma x, y, (fpext (fmul u, v))), z)
       //   -> (fma x, y, (fma (fpext u), (fpext v), z))
       auto FoldFAddFMAFPExtFMul = [&] (
@@ -7415,7 +7415,7 @@
                                      N21, N0));
     }
 
-    if (LookThroughFPExt) {
+    if (UnsafeFPMath && LookThroughFPExt) {
       // fold (fsub (fma x, y, (fpext (fmul u, v))), z)
       //   -> (fma x, y (fma (fpext u), (fpext v), (fneg z)))
       if (N0.getOpcode() == PreferredFusedOpcode) {