1 files changed, 100 insertions, 0 deletions
diff --git a/clang/test/CodeGen/volatile.c b/clang/test/CodeGen/volatile.c
new file mode 100644
index 0000000..1a996de
--- /dev/null
+++ b/clang/test/CodeGen/volatile.c
@@ -0,0 +1,100 @@
+// RUN: %clang_cc1 -emit-llvm < %s -o %t
+// RUN: grep volatile %t | count 28
+// RUN: grep memcpy %t | count 7
+
+// The number 28 comes from the current codegen for volatile loads;
+// if this number changes, it's not necessarily something wrong, but
+// something has changed to affect volatile load/store codegen
+
+int S;
+volatile int vS;
+
+int* pS;
+volatile int* pvS;
+
+int A[10];
+volatile int vA[10];
+
+struct { int x; } F;
+struct { volatile int x; } vF;
+
+struct { int x; } F2;
+volatile struct { int x; } vF2;
+volatile struct { int x; } *vpF2;
+
+struct { struct { int y; } x; } F3;
+volatile struct { struct { int y; } x; } vF3;
+
+struct { int x:3; } BF;
+struct { volatile int x:3; } vBF;
+
+typedef int v4si __attribute__ ((vector_size (16)));
+v4si V;
+volatile v4si vV;
+
+typedef __attribute__(( ext_vector_type(4) )) int extv4;
+extv4 VE;
+volatile extv4 vVE;
+
+volatile struct {int x;} aggFct(void);
+
+typedef volatile int volatile_int;
+volatile_int vtS;
+
+int main() {
+  int i;
+
+  // load
+  i=S;
+  i=vS;
+  i=*pS;
+  i=*pvS;
+  i=A[2];
+  i=vA[2];
+  i=F.x;
+  i=vF.x;
+  i=F2.x;
+  i=vF2.x;
+  i=vpF2->x;
+  i=F3.x.y;
+  i=vF3.x.y;
+  i=BF.x;
+  i=vBF.x;
+  i=V[3];
+  i=vV[3];
+  i=VE.yx[1];
+  i=vVE.zy[1];
+  i = aggFct().x; // Note: not volatile
+  i=vtS;
+
+
+  // store
+  S=i;
+  vS=i;
+  *pS=i;
+  *pvS=i;
+  A[2]=i;
+  vA[2]=i;
+  F.x=i;
+  vF.x=i;
+  F2.x=i;
+  vF2.x=i;
+  vpF2->x=i;
+  vF3.x.y=i;
+  BF.x=i;
+  vBF.x=i;
+  V[3]=i;
+  vV[3]=i;
+  vtS=i;
+
+  // other ops:
+  ++S;
+  ++vS;
+  i+=S;
+  i+=vS;
+  ++vtS;
+  (void)vF2;
+  vF2 = vF2;
+  vF2 = vF2 = vF2;
+  vF2 = (vF2, vF2);
+}