[test-suite] r331240 - [ubsan] Make the C++ code here not cast floating point values outside

[Chandler Carruth via llvm-commits]

Author: chandlerc
Date: Mon Apr 30 18:12:18 2018
New Revision: 331240

URL: http://llvm.org/viewvc/llvm-project?rev=331240&view=rev
Log:
[ubsan] Make the C++ code here not cast floating point values outside
the range of an integer type to that integer type.

Instead, change the random value function to cast to the destination
type first and do the devision by 8 afterward. When the destination is
floating point this should be roughly equivalent, but when it is an
integer type it will end up truncating stuff down rather than ending up
outside the range.

Differential Revision: https://reviews.llvm.org/D46295

Modified:
    test-suite/trunk/Bitcode/Regression/vector_widen/driver.cpp
    test-suite/trunk/Bitcode/simd_ops/simd_ops.cpp

Modified: test-suite/trunk/Bitcode/Regression/vector_widen/driver.cpp
URL: http://llvm.org/viewvc/llvm-project/test-suite/trunk/Bitcode/Regression/vector_widen/driver.cpp?rev=331240&r1=331239&r2=331240&view=diff
==============================================================================
--- test-suite/trunk/Bitcode/Regression/vector_widen/driver.cpp (original)
+++ test-suite/trunk/Bitcode/Regression/vector_widen/driver.cpp Mon Apr 30 18:12:18 2018
@@ -2,7 +2,7 @@
 
 template<typename T>
 T rand_value() {
-    return (T)(rand() * 0.125) - 100;
+    return (T)((T)rand() / 8) - 100;
 }
 
 template<typename T>

Modified: test-suite/trunk/Bitcode/simd_ops/simd_ops.cpp
URL: http://llvm.org/viewvc/llvm-project/test-suite/trunk/Bitcode/simd_ops/simd_ops.cpp?rev=331240&r1=331239&r2=331240&view=diff
==============================================================================
--- test-suite/trunk/Bitcode/simd_ops/simd_ops.cpp (original)
+++ test-suite/trunk/Bitcode/simd_ops/simd_ops.cpp Mon Apr 30 18:12:18 2018
@@ -24,7 +24,7 @@ int allocate_aligned(void **mem, size_t
 
 template<typename T>
 T rand_value() {
-    return (T)(rand() * 0.125) - 100;
+    return (T)((T)rand() / 8) - 100;
 }
 
 // Even on android, we want errors to stdout