[X86] Disable SGX for Skylake Server - CPP test

[GBuella]

Summary

Fix test case - corresponding to r329701

[davezarzycki]

I don't think this change is correct. To the best of my knowledge, SKL does support SGX but SKX does not.

[GBuella]

In D45488#1063067, @davezarzycki wrote:

I don't think this change is correct. To the best of my knowledge, SKL does support SGX but SKX does not.

llvm-lit test/Preprocessor/predefined-arch-macros.c passes now.
I didn't know tests are not run automatically precommit around here, now I know I must always check them manually... sorry

test/Preprocessor/predefined-arch-macros.c

 // CHECK_SKL_M32: #define __MMX__ 1
 // CHECK_SKL_M32: #define __MPX__ 1
 // CHECK_SKL_M32: #define __PCLMUL__ 1
 // CHECK_SKL_M32: #define __POPCNT__ 1
 // CHECK_SKL_M32: #define __PRFCHW__ 1
 // CHECK_SKL_M32: #define __RDRND__ 1
 // CHECK_SKL_M32: #define __RDSEED__ 1
 // CHECK_SKL_M32: #define __RTM__ 1
-// CHECK_SKL_M32: #define __SGX__ 1
+// CHECK_SKL_M32-NOT: #define __SGX__ 1
 // CHECK_SKL_M32: #define __SSE2__ 1
 // CHECK_SKL_M32: #define __SSE3__ 1
 // CHECK_SKL_M32: #define __SSE4_1__ 1
 // CHECK_SKL_M32: #define __SSE4_2__ 1
 // CHECK_SKL_M32: #define __SSE__ 1
 // CHECK_SKL_M32: #define __SSSE3__ 1
 // CHECK_SKL_M32: #define __XSAVEC__ 1
 // CHECK_SKL_M32: #define __XSAVEOPT__ 1

 // CHECK_SKL_M64: #define __MMX__ 1
 // CHECK_SKL_M64: #define __MPX__ 1
 // CHECK_SKL_M64: #define __PCLMUL__ 1
 // CHECK_SKL_M64: #define __POPCNT__ 1
 // CHECK_SKL_M64: #define __PRFCHW__ 1
 // CHECK_SKL_M64: #define __RDRND__ 1
 // CHECK_SKL_M64: #define __RDSEED__ 1
 // CHECK_SKL_M64: #define __RTM__ 1
-// CHECK_SKL_M64: #define __SGX__ 1
+// CHECK_SKL_M64-NOT: #define __SGX__ 1
 // CHECK_SKL_M64: #define __SSE2_MATH__ 1
 // CHECK_SKL_M64: #define __SSE2__ 1
 // CHECK_SKL_M64: #define __SSE3__ 1
 // CHECK_SKL_M64: #define __SSE4_1__ 1
 // CHECK_SKL_M64: #define __SSE4_2__ 1
 // CHECK_SKL_M64: #define __SSE_MATH__ 1
 // CHECK_SKL_M64: #define __SSE__ 1
 // CHECK_SKL_M64: #define __SSSE3__ 1