Add the clang library to the repo (with some of my changes, too).

1 files changed, 176 insertions, 0 deletions

diff --git a/clang/test/CodeGen/exprs.c b/clang/test/CodeGen/exprs.c
new file mode 100644
index 0000000..cc03be6
--- /dev/null
+++ b/clang/test/CodeGen/exprs.c
@@ -0,0 +1,176 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown %s -emit-llvm -o - | FileCheck %s
+
+// PR1895
+// sizeof function
+int zxcv(void);
+int x=sizeof(zxcv);
+int y=__alignof__(zxcv);
+
+
+void *test(int *i) {
+ short a = 1;
+ i += a;
+ i + a;
+ a + i;
+}
+
+_Bool test2b; 
+int test2() { if (test2b); return 0; }
+
+// PR1921
+int test3() {
+  const unsigned char *bp;
+  bp -= (short)1;
+}
+
+// PR2080 - sizeof void
+int t1 = sizeof(void);
+int t2 = __alignof__(void);
+void test4() {
+  t1 = sizeof(void);
+  t2 = __alignof__(void);
+  
+  t1 = sizeof(test4());
+  t2 = __alignof__(test4());
+}
+
+// 'const float' promotes to double in varargs.
+int test5(const float x, float float_number) {
+  return __builtin_isless(x, float_number);
+}
+
+// this one shouldn't fold
+int ola() {
+  int a=2;
+  if ((0, (int)a) & 2) { return 1; }
+  return 2;
+}
+
+// this one shouldn't fold as well
+void eMaisUma() {
+  double t[1];
+  if (*t)
+    return;
+}
+
+// rdar://6520707
+void f0(void (*fp)(void), void (*fp2)(void)) {
+  int x = fp - fp2;
+}
+
+// noop casts as lvalues.
+struct X {
+  int Y;
+};
+struct X foo();
+int bar() {
+  return ((struct X)foo()).Y + 1;
+}
+
+// PR3809: INC/DEC of function pointers.
+void f2(void);
+unsigned f1(void) {
+  void (*fp)(void) = f2;
+  
+  ++fp;
+  fp++;
+  --fp;
+  fp--;
+  return (unsigned) fp;
+}  
+
+union f3_x {int x; float y;};
+int f3() {return ((union f3_x)2).x;}
+
+union f4_y {int x; _Complex float y;};
+_Complex float f4() {return ((union f4_y)(_Complex float)2.0).y;}
+
+struct f5_a { int a; } f5_a;
+union f5_z {int x; struct f5_a y;};
+struct f5_a f5() {return ((union f5_z)f5_a).y;}
+
+// ?: in "lvalue"
+struct s6 { int f0; };
+int f6(int a0, struct s6 a1, struct s6 a2) {
+  return (a0 ? a1 : a2).f0;
+}
+
+// PR4026
+void f7() {
+  __func__;
+}
+
+// PR4067
+int f8() {
+  return ({ foo(); }).Y;
+}
+
+// rdar://6880558
+struct S;
+struct C {
+  int i;
+  struct S *tab[];
+};
+struct S { struct C c; };
+void f9(struct S *x) {
+  foo(((void)1, x->c).tab[0]);
+}
+
+void f10() {
+  __builtin_sin(0);
+}
+
+// rdar://7530813
+// CHECK: define i32 @f11
+int f11(long X) {
+  int A[100];
+  return A[X];
+
+// CHECK: [[Xaddr:%[^ ]+]] = alloca i64, align 8
+// CHECK: load {{.*}}* [[Xaddr]]
+// CHECK-NEXT: getelementptr inbounds [100 x i32]* %A, i32 0, 
+// CHECK-NEXT: load i32*
+}
+
+int f12() {
+  // PR3150
+  // CHECK: define i32 @f12
+  // CHECK: ret i32 1
+  return 1||1;
+}
+
+// Make sure negate of fp uses -0.0 for proper -0 handling.
+double f13(double X) {
+  // CHECK: define double @f13
+  // CHECK: fsub double -0.0
+  return -X;
+}
+
+// Check operations on incomplete types.
+void f14(struct s14 *a) {
+  (void) &*a;
+}
+
+// CHECK: define void @f15
+void f15() {
+  extern void f15_start(void);
+  f15_start();
+  // CHECK: call void @f15_start()
+
+  extern void *f15_v(void);
+  extern const void *f15_cv(void);
+  extern volatile void *f15_vv(void);
+  *f15_v(); *f15_v(), *f15_v(); f15_v() ? *f15_v() : *f15_v();
+  *f15_cv(); *f15_cv(), *f15_cv(); f15_cv() ? *f15_cv() : *f15_cv();
+  *f15_vv(); *f15_vv(), *f15_vv(); f15_vv() ? *f15_vv() : *f15_vv();
+  // CHECK-NOT: load
+  // CHECK: ret void
+}
+
+// PR8967: this was crashing
+// CHECK: define void @f16()
+void f16() {
+  __extension__({ goto lbl; });
+ lbl:
+  ;
+}