It's not necessary to do rounding for alloca operations when the requested

alignment is equal to the stack alignment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 24 insertions, 0 deletions

diff --git a/test/C++Frontend/2007-05-16-ReverseBitFieldCrash.cpp b/test/C++Frontend/2007-05-16-ReverseBitFieldCrash.cpp
new file mode 100644
index 0000000..8392c0b
--- /dev/null
+++ b/test/C++Frontend/2007-05-16-ReverseBitFieldCrash.cpp
@@ -0,0 +1,24 @@
+// RUN: %llvmgxx %s -emit-llvm -S -o -
+
+#pragma reverse_bitfields on
+typedef unsigned long UINT32;
+
+extern void abort(void);
+
+typedef struct TestStruct
+{
+  long	first: 15,
+    second: 17;	
+} TestStruct;
+
+int main (int argc, char * const argv[]) {
+
+  TestStruct testStruct = {1, 0};
+  
+  UINT32 dw = *(UINT32 *)(&testStruct);
+  
+  if(!(dw & 0xFFFF))
+    abort ();
+
+  return 0;
+}