Add X86FastISel support for return statements. This entails refactoring
a bunch of stuff, to allow the target-independent calling convention
logic to be employed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107800 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/fast-isel-gep.ll b/test/CodeGen/X86/fast-isel-gep.ll
index 1270ab7..21551e1 100644
--- a/test/CodeGen/X86/fast-isel-gep.ll
+++ b/test/CodeGen/X86/fast-isel-gep.ll
@@ -14,8 +14,7 @@
 
 ; X64: test1:
 ; X64:  	movslq	%edi, %rax
-; X64:  	movl	(%rsi,%rax,4), %eax
-; X64:  	ret
+; X64:  	movl	(%rsi,%rax,4), %e
 
 }
 define i32 @test2(i64 %t3, i32* %t1) nounwind {