Don't force promotion of return arguments on the callee.
Some architectures (like x86) don't require it.
This fixes bug 3779.

llvm-svn: 67132
diff --git a/llvm/test/CodeGen/X86/tls12.ll b/llvm/test/CodeGen/X86/tls12.ll
index c6f766d..17ea996 100644
--- a/llvm/test/CodeGen/X86/tls12.ll
+++ b/llvm/test/CodeGen/X86/tls12.ll
@@ -1,5 +1,5 @@
 ; RUN: llvm-as < %s | llc -march=x86 -mtriple=i386-linux-gnu > %t
-; RUN: grep {movzbl	%gs:i@NTPOFF, %eax} %t
+; RUN: grep {movb	%gs:i@NTPOFF, %al} %t
 
 @i = thread_local global i8 15