File: assume-aligned-and-alloc-align-attributes.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 (45 lines) | stat: -rw-r--r-- 1,737 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
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s

void *my_aligned_alloc(int size, int alignment) __attribute__((assume_aligned(32), alloc_align(2)));

// CHECK-LABEL: @t0_immediate0(
// CHECK-NEXT:  entry:
// CHECK-NEXT:    [[CALL:%.*]] = call align 32 i8* @my_aligned_alloc(i32 noundef 320, i32 noundef 16)
// CHECK-NEXT:    ret i8* [[CALL]]
//
void *t0_immediate0(void) {
  return my_aligned_alloc(320, 16);
};

// CHECK-LABEL: @t1_immediate1(
// CHECK-NEXT:  entry:
// CHECK-NEXT:    [[CALL:%.*]] = call align 32 i8* @my_aligned_alloc(i32 noundef 320, i32 noundef 32)
// CHECK-NEXT:    ret i8* [[CALL]]
//
void *t1_immediate1(void) {
  return my_aligned_alloc(320, 32);
};

// CHECK-LABEL: @t2_immediate2(
// CHECK-NEXT:  entry:
// CHECK-NEXT:    [[CALL:%.*]] = call align 64 i8* @my_aligned_alloc(i32 noundef 320, i32 noundef 64)
// CHECK-NEXT:    ret i8* [[CALL]]
//
void *t2_immediate2(void) {
  return my_aligned_alloc(320, 64);
};

// CHECK-LABEL: @t3_variable(
// CHECK-NEXT:  entry:
// CHECK-NEXT:    [[ALIGNMENT_ADDR:%.*]] = alloca i32, align 4
// CHECK-NEXT:    store i32 [[ALIGNMENT:%.*]], i32* [[ALIGNMENT_ADDR]], align 4
// CHECK-NEXT:    [[TMP0:%.*]] = load i32, i32* [[ALIGNMENT_ADDR]], align 4
// CHECK-NEXT:    [[CALL:%.*]] = call align 32 i8* @my_aligned_alloc(i32 noundef 320, i32 noundef [[TMP0]])
// CHECK-NEXT:    [[CASTED_ALIGN:%.*]] = zext i32 [[TMP0]] to i64
// CHECK-NEXT:    call void @llvm.assume(i1 true) [ "align"(i8* [[CALL]], i64 [[CASTED_ALIGN]]) ]
// CHECK-NEXT:    ret i8* [[CALL]]
//
void *t3_variable(int alignment) {
  return my_aligned_alloc(320, alignment);
};