diff --git a/lib/Target/Mips/MipsSubtarget.cpp b/lib/Target/Mips/MipsSubtarget.cpp
index 143b94599b2..ffc3d2f46df 100644
--- a/lib/Target/Mips/MipsSubtarget.cpp
+++ b/lib/Target/Mips/MipsSubtarget.cpp
@@ -131,6 +131,8 @@ MipsSubtarget::MipsSubtarget(const std::string &TT, const std::string &CPU,
     IsLinux = false;
 
   // Set UseSmallSection.
+  // TODO: Investigate the IsLinux check. I suspect it's really checking for
+  //       bare-metal.
   UseSmallSection = !IsLinux && (RM == Reloc::Static);
   // set some subtarget specific features
   if (inMips16Mode())
diff --git a/test/CodeGen/Mips/cconv/return-float.ll b/test/CodeGen/Mips/cconv/return-float.ll
index 4b0327bde37..28cf83d3efc 100644
--- a/test/CodeGen/Mips/cconv/return-float.ll
+++ b/test/CodeGen/Mips/cconv/return-float.ll
@@ -1,18 +1,21 @@
-; RUN: llc -march=mips -soft-float -relocation-model=static < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
-; RUN: llc -march=mipsel -soft-float -relocation-model=static < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
+; RUN: llc -mtriple=mips-linux-gnu -soft-float -relocation-model=static < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
+; RUN: llc -mtriple=mipsel-linux-gnu -soft-float -relocation-model=static < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
 
-; RUN-TODO: llc -march=mips64 -soft-float -relocation-model=static -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
-; RUN-TODO: llc -march=mips64el -soft-float -relocation-model=static -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
+; RUN-TODO: llc -mtriple=mips64-linux-gnu -soft-float -relocation-model=static -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
+; RUN-TODO: llc -mtriple=mips64el-linux-gnu -soft-float -relocation-model=static -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
 
-; RUN: llc -march=mips64 -soft-float -relocation-model=static -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s
-; RUN: llc -march=mips64el -soft-float -relocation-model=static -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s
+; RUN: llc -mtriple=mips64-linux-gnu -soft-float -relocation-model=static -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s
+; RUN: llc -mtriple=mips64el-linux-gnu -soft-float -relocation-model=static -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s
 
-; RUN: llc -march=mips64 -soft-float -relocation-model=static -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s
-; RUN: llc -march=mips64el -soft-float -relocation-model=static -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s
+; RUN: llc -mtriple=mips64-linux-gnu -soft-float -relocation-model=static -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s
+; RUN: llc -mtriple=mips64el-linux-gnu -soft-float -relocation-model=static -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s
 
 ; Test the float returns for all ABI's and byte orders as specified by
 ; section 5 of MD00305 (MIPS ABIs Described).
 
+; We only test Linux because other OS's use different relocations and I don't
+; know if this is correct.
+
 @float = global float zeroinitializer
 @double = global double zeroinitializer
 
diff --git a/test/CodeGen/Mips/cconv/return-hard-float.ll b/test/CodeGen/Mips/cconv/return-hard-float.ll
index bde43cd48f0..371b3a54598 100644
--- a/test/CodeGen/Mips/cconv/return-hard-float.ll
+++ b/test/CodeGen/Mips/cconv/return-hard-float.ll
@@ -1,18 +1,21 @@
-; RUN: llc -march=mips -relocation-model=static < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
-; RUN: llc -march=mipsel -relocation-model=static < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
+; RUN: llc -mtriple=mips-linux-gnu -relocation-model=static < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
+; RUN: llc -mtriple=mipsel-linux-gnu -relocation-model=static < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
 
-; RUN-TODO: llc -march=mips64 -relocation-model=static -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
-; RUN-TODO: llc -march=mips64el -relocation-model=static -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
+; RUN-TODO: llc -mtriple=mips64-linux-gnu -relocation-model=static -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
+; RUN-TODO: llc -mtriple=mips64el-linux-gnu -relocation-model=static -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
 
-; RUN: llc -march=mips64 -relocation-model=static -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s
-; RUN: llc -march=mips64el -relocation-model=static -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s
+; RUN: llc -mtriple=mips64-linux-gnu -relocation-model=static -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s
+; RUN: llc -mtriple=mips64el-linux-gnu -relocation-model=static -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s
 
-; RUN: llc -march=mips64 -relocation-model=static -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s
-; RUN: llc -march=mips64el -relocation-model=static -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s
+; RUN: llc -mtriple=mips64-linux-gnu -relocation-model=static -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s
+; RUN: llc -mtriple=mips64el-linux-gnu -relocation-model=static -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s
 
 ; Test the float returns for all ABI's and byte orders as specified by
 ; section 5 of MD00305 (MIPS ABIs Described).
 
+; We only test Linux because other OS's use different relocations and I don't
+; know if this is correct.
+
 @float = global float zeroinitializer
 @double = global double zeroinitializer
 
diff --git a/test/CodeGen/Mips/cconv/return.ll b/test/CodeGen/Mips/cconv/return.ll
index d24abae5540..76ce5e44c4a 100644
--- a/test/CodeGen/Mips/cconv/return.ll
+++ b/test/CodeGen/Mips/cconv/return.ll
@@ -1,18 +1,21 @@
-; RUN: llc -march=mips -relocation-model=static < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
-; RUN: llc -march=mipsel -relocation-model=static < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
+; RUN: llc -mtriple=mips-linux-gnu -relocation-model=static < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
+; RUN: llc -mtriple=mipsel-linux-gnu -relocation-model=static < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
 
-; RUN-TODO: llc -march=mips64 -relocation-model=static -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
-; RUN-TODO: llc -march=mips64el -relocation-model=static -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
+; RUN-TODO: llc -mtriple=mips64-linux-gnu -relocation-model=static -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
+; RUN-TODO: llc -mtriple=mips64el-linux-gnu -relocation-model=static -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s
 
-; RUN: llc -march=mips64 -relocation-model=static -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s
-; RUN: llc -march=mips64el -relocation-model=static -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s
+; RUN: llc -mtriple=mips64-linux-gnu -relocation-model=static -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s
+; RUN: llc -mtriple=mips64el-linux-gnu -relocation-model=static -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s
 
-; RUN: llc -march=mips64 -relocation-model=static -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s
-; RUN: llc -march=mips64el -relocation-model=static -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s
+; RUN: llc -mtriple=mips64-linux-gnu -relocation-model=static -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s
+; RUN: llc -mtriple=mips64el-linux-gnu -relocation-model=static -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s
 
 ; Test the integer returns for all ABI's and byte orders as specified by
 ; section 5 of MD00305 (MIPS ABIs Described).
-;
+
+; We only test Linux because other OS's use different relocations and I don't
+; know if this is correct.
+
 @byte = global i8 zeroinitializer
 @word = global i32 zeroinitializer
 @dword = global i64 zeroinitializer