llc: Eliminate a use of getDarwinMajorNumber().

 - As before, there is a minor semantic change here (evidenced by the test
   change) for Darwin triples that have no version component. I debated changing
   the default behavior of isOSVersionLT, but decided it made more sense for
   triples to be explicit.

llvm-svn: 129805
diff --git a/llvm/test/CodeGen/X86/2010-05-26-DotDebugLoc.ll b/llvm/test/CodeGen/X86/2010-05-26-DotDebugLoc.ll
index ac26def..6600cc3 100644
--- a/llvm/test/CodeGen/X86/2010-05-26-DotDebugLoc.ll
+++ b/llvm/test/CodeGen/X86/2010-05-26-DotDebugLoc.ll
@@ -1,7 +1,7 @@
 ; RUN: llc -O2 < %s | FileCheck %s
 ; RUN: llc -O2 -regalloc=basic < %s | FileCheck %s
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
-target triple = "x86_64-apple-darwin"
+target triple = "x86_64-apple-darwin10"
 
 %struct.a = type { i32, %struct.a* }
 
diff --git a/llvm/test/CodeGen/X86/dbg-value-range.ll b/llvm/test/CodeGen/X86/dbg-value-range.ll
index 67e3eee..da49f2d 100644
--- a/llvm/test/CodeGen/X86/dbg-value-range.ll
+++ b/llvm/test/CodeGen/X86/dbg-value-range.ll
@@ -1,5 +1,5 @@
-; RUN: llc -mtriple=x86_64-apple-darwin < %s | FileCheck %s
-; RUN: llc -mtriple=x86_64-apple-darwin -regalloc=basic < %s | FileCheck %s
+; RUN: llc -mtriple=x86_64-apple-darwin10 < %s | FileCheck %s
+; RUN: llc -mtriple=x86_64-apple-darwin10 -regalloc=basic < %s | FileCheck %s
 
 %struct.a = type { i32 }