File: 2008-07-31-promotion-of-compound-pointer-arithmetic.c

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-16
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 1,496,368 kB
  • sloc: cpp: 5,593,980; ansic: 986,873; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,547; xml: 953; cs: 573; fortran: 567
file content (31 lines) | stat: -rw-r--r-- 572 bytes parent folder | download | duplicates (6)
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
// RUN: %clang_cc1 -triple i386-unknown-unknown -O1 -emit-llvm -o - %s | FileCheck %s
// CHECK-LABEL: define{{.*}} i32 @f0
// CHECK:   ret i32 1
// CHECK-LABEL: define{{.*}} i32 @f1
// CHECK:   ret i32 1
// CHECK-LABEL: define{{.*}} i32 @f2
// CHECK:   ret i32 1
// <rdr://6115726>

int f0() {
  int x;
  unsigned short n = 1;
  int *a = &x;
  int *b = &x;
  a = a - n;
  b -= n;
  return a == b;
}

int f1(int *a) {
  long b = a - (int*) 1;
  a -= (int*) 1;
  return b == (long) a;
}

int f2(long n) {
  int *b = n + (int*) 1;
  n += (int*) 1;
  return b == (int*) n;
}