File: 2005-01-02-ConstantInits.c

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (68 lines) | stat: -rw-r--r-- 3,269 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --function-signature --check-globals --global-value-regex "@.+"
// RUN: %clang_cc1 -no-opaque-pointers -triple=x86_64-unknown-linux %s -emit-llvm -o - | FileCheck %s

// This tests all kinds of hard cases with initializers and
// array subscripts.  This corresponds to PR487.

struct X { int a[2]; };
extern int bar();

//.
// CHECK: @test.i23 = internal global i32 4, align 4
// CHECK: @i = global i32 4, align 4
// CHECK: @Arr = global [100 x i32] zeroinitializer, align 16
// CHECK: @foo2.X = internal global i32* bitcast (i8* getelementptr (i8, i8* bitcast ([100 x i32]* @Arr to i8*), i64 196) to i32*), align 8
// CHECK: @foo2.i23 = internal global i32 0, align 4
//.
// CHECK-LABEL: define {{[^@]+}}@test
// CHECK-SAME: () #[[ATTR0:[0-9]+]] {
// CHECK-NEXT:  entry:
// CHECK-NEXT:    [[TMP0:%.*]] = load i32, i32* @test.i23, align 4
// CHECK-NEXT:    ret i32 [[TMP0]]
//
int test(void) {
  static int i23 = (int) &(((struct X *)0)->a[1]);
  return i23;
}

int i = (int) &( ((struct X *)0) -> a[1]);

int Arr[100];

// CHECK-LABEL: define {{[^@]+}}@foo
// CHECK-SAME: (i32 noundef [[I:%.*]]) #[[ATTR0]] {
// CHECK-NEXT:  entry:
// CHECK-NEXT:    [[I_ADDR:%.*]] = alloca i32, align 4
// CHECK-NEXT:    store i32 [[I]], i32* [[I_ADDR]], align 4
// CHECK-NEXT:    [[CALL:%.*]] = call i32 (i32*, ...) bitcast (i32 (...)* @bar to i32 (i32*, ...)*)(i32* noundef getelementptr inbounds ([100 x i32], [100 x i32]* @Arr, i64 0, i64 49))
// CHECK-NEXT:    [[TMP0:%.*]] = load i32, i32* [[I_ADDR]], align 4
// CHECK-NEXT:    [[IDXPROM:%.*]] = sext i32 [[TMP0]] to i64
// CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds [100 x i32], [100 x i32]* @Arr, i64 0, i64 [[IDXPROM]]
// CHECK-NEXT:    [[CALL1:%.*]] = call i32 (i32*, ...) bitcast (i32 (...)* @bar to i32 (i32*, ...)*)(i32* noundef [[ARRAYIDX]])
// CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[CALL]], [[CALL1]]
// CHECK-NEXT:    ret i32 [[ADD]]
//
int foo(int i) { return bar(&Arr[49])+bar(&Arr[i]); }
// CHECK-LABEL: define {{[^@]+}}@foo2
// CHECK-SAME: (i32 noundef [[I:%.*]]) #[[ATTR0]] {
// CHECK-NEXT:  entry:
// CHECK-NEXT:    [[I_ADDR:%.*]] = alloca i32, align 4
// CHECK-NEXT:    [[P:%.*]] = alloca i32*, align 8
// CHECK-NEXT:    store i32 [[I]], i32* [[I_ADDR]], align 4
// CHECK-NEXT:    store i32* getelementptr inbounds ([100 x i32], [100 x i32]* @Arr, i64 0, i64 0), i32** [[P]], align 8
// CHECK-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[P]], align 8
// CHECK-NEXT:    [[INCDEC_PTR:%.*]] = getelementptr inbounds i32, i32* [[TMP0]], i32 1
// CHECK-NEXT:    store i32* [[INCDEC_PTR]], i32** [[P]], align 8
// CHECK-NEXT:    [[TMP1:%.*]] = load i32, i32* [[I_ADDR]], align 4
// CHECK-NEXT:    [[IDX_EXT:%.*]] = sext i32 [[TMP1]] to i64
// CHECK-NEXT:    [[ADD_PTR:%.*]] = getelementptr inbounds i32, i32* getelementptr inbounds ([100 x i32], [100 x i32]* @Arr, i64 0, i64 0), i64 [[IDX_EXT]]
// CHECK-NEXT:    [[CALL:%.*]] = call i32 (i32*, ...) bitcast (i32 (...)* @bar to i32 (i32*, ...)*)(i32* noundef [[ADD_PTR]])
// CHECK-NEXT:    ret i32 [[CALL]]
//
int foo2(int i) {
  static const int *X = &Arr[49];
   static int i23 = (int) &( ((struct X *)0) -> a[0]);
  int *P = Arr;
  ++P;
  return bar(Arr+i);
}