Replace more uses of sse41 with sse4.1.

llc using the host cpu features and *waning* on unknown features is probably
not a good thing :-(

llvm-svn: 189144
diff --git a/llvm/test/CodeGen/X86/rounding-ops.ll b/llvm/test/CodeGen/X86/rounding-ops.ll
index ace31cf..69f4bfb 100644
--- a/llvm/test/CodeGen/X86/rounding-ops.ll
+++ b/llvm/test/CodeGen/X86/rounding-ops.ll
@@ -1,4 +1,4 @@
-; RUN: llc < %s -mtriple=x86_64-apple-macosx -mattr=+sse41 | FileCheck -check-prefix=CHECK-SSE %s
+; RUN: llc < %s -mtriple=x86_64-apple-macosx -mattr=+sse4.1 | FileCheck -check-prefix=CHECK-SSE %s
 ; RUN: llc < %s -mtriple=x86_64-apple-macosx -mattr=+avx | FileCheck -check-prefix=CHECK-AVX %s
 
 define float @test1(float %x) nounwind  {