[SLC] Refactor simplification of pow() (NFC)

llvm-svn: 338730
diff --git a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
index 15e0358..bf92399 100644
--- a/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp
@@ -1178,7 +1178,7 @@
   // Evaluate special cases related to the base.
 
   // pow(1.0, x) -> 1.0
-  if (match(Base, m_SpecificFP(1.0)))
+  if (match(Base, m_FPOne()))
     return Base;
 
   // pow(2.0, x) -> exp2(x)