File: finegrain-bitfield-type.cpp

package info (click to toggle)
llvm-toolchain-13 1%3A13.0.1-11
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,418,840 kB
  • sloc: cpp: 5,290,826; ansic: 996,570; asm: 544,593; python: 188,212; objc: 72,027; lisp: 30,291; f90: 25,395; sh: 24,898; javascript: 9,780; pascal: 9,398; perl: 7,484; ml: 5,432; awk: 3,523; makefile: 2,913; xml: 953; cs: 573; fortran: 539
file content (29 lines) | stat: -rw-r--r-- 837 bytes parent folder | download | duplicates (23) 
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
 
// RUN: %clang_cc1 -triple x86_64-linux-gnu -ffine-grained-bitfield-accesses \
// RUN:   -emit-llvm -o - %s | FileCheck %s
// RUN: %clang_cc1 -triple riscv64-linux-gnu -ffine-grained-bitfield-accesses \
// RUN:   -emit-llvm -o - %s | FileCheck %s

// Note: This test checks the X86-64 and RISC-V targets in order to explore
// behaviour when i8/i16 are native integer widths (X86-64) and when they're
// not (RISC-V).

struct S4 {
  unsigned long f1:28;
  unsigned long f2:4;
  unsigned long f3:12;
};
struct S4 a4;

struct S5 {
  unsigned long f1:28;
  unsigned long f2:4;
  unsigned long f3:28;
  unsigned long f4:4;
  unsigned long f5:12;
};
struct S5 a5;

// CHECK: %struct.S4 = type { i32, i16 }
// CHECK-NOT: %struct.S4 = type { i48 }
// CHECK: %struct.S5 = type { i32, i32, i16, [6 x i8] }
// CHECK-NOT: %struct.S5 = type { i80 }