199 lines
3.7 KiB
C
199 lines
3.7 KiB
C
// RUN: %clang_cc1 -triple x86_64-unknown-unknown %s -emit-llvm -o - | FileCheck %s
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// PR1895
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// sizeof function
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int zxcv(void);
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int x=sizeof(zxcv);
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int y=__alignof__(zxcv);
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void *test(int *i) {
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short a = 1;
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i += a;
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i + a;
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a + i;
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}
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_Bool test2b;
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int test2() { if (test2b); return 0; }
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// PR1921
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int test3() {
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const unsigned char *bp;
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bp -= (short)1;
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}
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// PR2080 - sizeof void
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int t1 = sizeof(void);
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int t2 = __alignof__(void);
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void test4() {
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t1 = sizeof(void);
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t2 = __alignof__(void);
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t1 = sizeof(test4());
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t2 = __alignof__(test4());
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}
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// 'const float' promotes to double in varargs.
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int test5(const float x, float float_number) {
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return __builtin_isless(x, float_number);
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}
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// this one shouldn't fold
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int ola() {
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int a=2;
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if ((0, (int)a) & 2) { return 1; }
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return 2;
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}
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// this one shouldn't fold as well
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void eMaisUma() {
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double t[1];
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if (*t)
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return;
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}
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// rdar://6520707
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void f0(void (*fp)(void), void (*fp2)(void)) {
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int x = fp - fp2;
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}
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// noop casts as lvalues.
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struct X {
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int Y;
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};
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struct X foo();
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int bar() {
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return ((struct X)foo()).Y + 1;
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}
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// PR3809: INC/DEC of function pointers.
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void f2(void);
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unsigned f1(void) {
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void (*fp)(void) = f2;
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++fp;
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fp++;
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--fp;
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fp--;
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return (unsigned) fp;
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}
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union f3_x {int x; float y;};
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int f3() {return ((union f3_x)2).x;}
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union f4_y {int x; _Complex float y;};
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_Complex float f4() {return ((union f4_y)(_Complex float)2.0).y;}
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struct f5_a { int a; } f5_a;
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union f5_z {int x; struct f5_a y;};
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struct f5_a f5() {return ((union f5_z)f5_a).y;}
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// ?: in "lvalue"
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struct s6 { int f0; };
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int f6(int a0, struct s6 a1, struct s6 a2) {
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return (a0 ? a1 : a2).f0;
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}
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// PR4026
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void f7() {
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__func__;
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}
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// PR4067
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int f8() {
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return ({ foo(); }).Y;
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}
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// rdar://6880558
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struct S;
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struct C {
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int i;
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struct S *tab[];
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};
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struct S { struct C c; };
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void f9(struct S *x) {
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foo(((void)1, x->c).tab[0]);
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}
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void f10() {
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__builtin_sin(0);
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}
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// rdar://7530813
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// CHECK-LABEL: define i32 @f11
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int f11(long X) {
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int A[100];
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return A[X];
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// CHECK: [[Xaddr:%[^ ]+]] = alloca i64, align 8
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// CHECK: [[A:%.*]] = alloca [100 x i32], align
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// CHECK: [[X:%.*]] = load {{.*}}, {{.*}}* [[Xaddr]]
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// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [100 x i32], [100 x i32]* [[A]], i64 0, i64 [[X]]
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// CHECK-NEXT: load i32, i32* [[T0]], align 4
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}
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int f12() {
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// PR3150
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// CHECK-LABEL: define i32 @f12
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// CHECK: ret i32 1
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return 1||1;
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}
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// Make sure negate of fp uses -0.0 for proper -0 handling.
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double f13(double X) {
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// CHECK-LABEL: define double @f13
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// CHECK: fsub double -0.0
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return -X;
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}
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// Check operations on incomplete types.
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void f14(struct s14 *a) {
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(void) &*a;
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}
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// CHECK-LABEL: define void @f15
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void f15() {
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extern void f15_start(void);
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f15_start();
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// CHECK: call void @f15_start()
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extern void *f15_v(void);
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extern const void *f15_cv(void);
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extern volatile void *f15_vv(void);
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*f15_v(); *f15_v(), *f15_v(); f15_v() ? *f15_v() : *f15_v();
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*f15_cv(); *f15_cv(), *f15_cv(); f15_cv() ? *f15_cv() : *f15_cv();
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*f15_vv(); *f15_vv(), *f15_vv(); f15_vv() ? *f15_vv() : *f15_vv();
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// CHECK-NOT: load
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// CHECK: ret void
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}
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// PR8967: this was crashing
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// CHECK-LABEL: define void @f16()
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void f16() {
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__extension__({ goto lbl; });
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lbl:
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;
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}
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// PR13704: negative increment in i128 is not preserved.
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// CHECK-LABEL: define void @f17()
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void f17() {
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extern void extfunc(__int128);
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__int128 x = 2;
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x--;
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extfunc(x);
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// CHECK: add nsw i128 %{{.}}, -1
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}
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// PR23597: We should evaluate union cast operands even if the cast is unused.
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typedef union u {
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int i;
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} strct;
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int returns_int(void);
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void f18() {
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(strct)returns_int();
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}
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// CHECK-LABEL: define void @f18()
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// CHECK: call i32 @returns_int()
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