Compile and test i128 math builtins for Win64

Summary:
Windows has always been LLP64, not LP64, so the macros were incorrect.
Check for _WIN64, since AArch64 sets that too.

The tests have to be fixed up in two main ways:
1. Use 'ULL' suffixes to avoid sign extension when passing hex literals
   with the sign bit set to signed 128 arguments. Clang
   -fms-compatibility makes such hex literals signed, not unsigned.
2. Disable various tests for 80-bit long double interoperation with i128
   values.

Reviewers: joerg, mstorsjo

Subscribers: javed.absar, kristof.beyls, hiraditya, aheejin, llvm-commits

Differential Revision: https://reviews.llvm.org/D53918

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@345796 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 5 deletions

diff --git a/test/builtins/Unit/floattixf_test.c b/test/builtins/Unit/floattixf_test.c
index 77a6f7dbf..501a8dc6c 100644
--- a/test/builtins/Unit/floattixf_test.c
+++ b/test/builtins/Unit/floattixf_test.c
@@ -18,7 +18,7 @@
 #include <float.h>
 #include <stdio.h>
 
-#ifdef CRT_HAS_128BIT
+#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
 
 // Returns: convert a to a long double, rounding toward even.
 
@@ -43,15 +43,15 @@ int test__floattixf(ti_int a, long double expected)
     return x != expected;
 }
 
-char assumption_1[sizeof(ti_int) == 2*sizeof(di_int)] = {0};
-char assumption_2[sizeof(ti_int)*CHAR_BIT == 128] = {0};
-char assumption_3[sizeof(long double)*CHAR_BIT == 128] = {0};
+COMPILE_TIME_ASSERT(sizeof(ti_int) == 2*sizeof(di_int));
+COMPILE_TIME_ASSERT(sizeof(ti_int)*CHAR_BIT == 128);
+COMPILE_TIME_ASSERT(sizeof(long double)*CHAR_BIT == 128);
 
 #endif
 
 int main()
 {
-#ifdef CRT_HAS_128BIT
+#if defined(CRT_HAS_128BIT) && HAS_80_BIT_LONG_DOUBLE
     if (test__floattixf(0, 0.0))
         return 1;