Change -mno-mmx to be more compatible with gcc. Specifically, -mno-mmx should not imply -mno-sse.
Note that because we don't usually touch the MMX registers anyway, all -mno-mmx needs to do is tweak the x86-32 calling convention a little for vectors that look like MMX vectors, and prevent the definition of __MMX__.
clang doesn't actually stop the user from using MMX inline asm operands or MMX builtins in -mno-mmx mode; as a QOI issue, it would be nice to diagnose, but I doubt it really matters much.
<rdar://problem/9694837>
llvm-svn: 134770
diff --git a/clang/test/CodeGen/x86_32-arguments-linux.c b/clang/test/CodeGen/x86_32-arguments-linux.c
index 2f246f8..81dcaf6 100644
--- a/clang/test/CodeGen/x86_32-arguments-linux.c
+++ b/clang/test/CodeGen/x86_32-arguments-linux.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -w -fblocks -triple i386-pc-linux-gnu -emit-llvm -o %t %s
+// RUN: %clang_cc1 -w -fblocks -triple i386-pc-linux-gnu -target-cpu pentium4 -emit-llvm -o %t %s
// RUN: FileCheck < %t %s
// CHECK: define void @f56(