1 files changed, 74 insertions, 0 deletions
diff --git a/test/CodeGen/bitfield.c b/test/CodeGen/bitfield.c
new file mode 100644
index 0000000..02f2de7
--- /dev/null
+++ b/test/CodeGen/bitfield.c
@@ -0,0 +1,74 @@
+// RUN: clang-cc -triple i386-unknown-unknown %s -emit-llvm -o %t -O3 &&
+// RUN: grep "ret i32" %t | count 4 &&
+// RUN: grep "ret i32 1" %t | count 4
+
+static int f0(int n) {
+  struct s0 {
+    int a : 30;
+    int b : 2;
+    long long c : 31;
+  } x = { 0xdeadbeef, 0xdeadbeef, 0xdeadbeef };
+  
+  x.a += n;
+  x.b += n;
+  x.c += n;
+
+  return x.a + x.b + x.c;
+}
+
+int g0(void) {
+  return f0(-1) + 44335655;
+}
+
+static int f1(void) {
+  struct s1 { 
+    int a:13; 
+    char b; 
+    unsigned short c:7;
+  } x;
+  
+  x.a = -40;
+  x.b = 10;
+  x.c = 15;
+
+  return x.a + x.b + x.c;
+}
+
+int g1(void) {
+  return f1() + 16;
+}
+
+static int f2(void) {
+  struct s2 {
+    short a[3];
+    int b : 15;
+  } x;
+  
+  x.a[0] = x.a[1] = x.a[2] = -40;
+  x.b = 10;
+
+  return x.b;
+}
+
+int g2(void) {
+  return f2() - 9;
+}
+
+static int f3(int n) {
+  struct s3 {
+    unsigned a:16;
+    unsigned b:28 __attribute__ ((packed));
+  } x = { 0xdeadbeef, 0xdeadbeef };
+  struct s4 {
+    signed a:16;
+    signed b:28 __attribute__ ((packed));
+  } y;
+  y.a = -0x56789abcL;
+  y.b = -0x56789abcL;
+  return ((y.a += x.a += n) + 
+          (y.b += x.b += n));
+}
+
+int g3(void) {
+  return f3(20) + 130725747;
+}