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-rw-r--r--clang/test/CodeGen/bitfield.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/clang/test/CodeGen/bitfield.c b/clang/test/CodeGen/bitfield.c
new file mode 100644
index 0000000..dea5e43
--- /dev/null
+++ b/clang/test/CodeGen/bitfield.c
@@ -0,0 +1,74 @@
+// RUN: %clang_cc1 -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;
+}