Fix the C-API MCJIT test for 32-bit big endian machines.

Avoid using unions for storing the return value from
LLVMGetGlobalValueAddress() and LLVMGetFunctionAddress() and accessing it as
a pointer through another pointer member. This causes problems on 32-bit big
endian machines since the pointer gets the higher part of the return value of
the aforementioned functions.

llvm-svn: 226170

1 files changed, 6 insertions, 12 deletions

diff --git a/llvm/unittests/ExecutionEngine/MCJIT/MCJITCAPITest.cpp b/llvm/unittests/ExecutionEngine/MCJIT/MCJITCAPITest.cpp
index 62967bdd327..f2a3000906e 100644
--- a/llvm/unittests/ExecutionEngine/MCJIT/MCJITCAPITest.cpp
+++ b/llvm/unittests/ExecutionEngine/MCJIT/MCJITCAPITest.cpp
@@ -359,13 +359,10 @@ TEST_F(MCJITCAPITest, gva) {
   buildMCJITEngine();
   buildAndRunPasses();
 
-  union {
-    uint64_t raw;
-    int32_t *usable;
-  } valuePointer;
-  valuePointer.raw = LLVMGetGlobalValueAddress(Engine, "simple_value");
+  uint64_t raw = LLVMGetGlobalValueAddress(Engine, "simple_value");
+  int32_t *usable  = (int32_t *) raw;
 
-  EXPECT_EQ(42, *valuePointer.usable);
+  EXPECT_EQ(42, *usable);
 }
 
 TEST_F(MCJITCAPITest, gfa) {
@@ -376,13 +373,10 @@ TEST_F(MCJITCAPITest, gfa) {
   buildMCJITEngine();
   buildAndRunPasses();
 
-  union {
-    uint64_t raw;
-    int (*usable)();
-  } functionPointer;
-  functionPointer.raw = LLVMGetFunctionAddress(Engine, "simple_function");
+  uint64_t raw = LLVMGetFunctionAddress(Engine, "simple_function");
+  int (*usable)() = (int (*)()) raw;
 
-  EXPECT_EQ(42, functionPointer.usable());
+  EXPECT_EQ(42, usable());
 }
 
 TEST_F(MCJITCAPITest, custom_memory_manager) {