File: asm-constraints-device.cu

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 (24 lines) | stat: -rw-r--r-- 901 bytes parent folder | download | duplicates (35) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
// Verify that we do check for constraints in device-side inline
// assembly. Passing an illegal input/output constraint and look 
// for corresponding error
// RUN: %clang_cc1 -triple nvptx-unknown-cuda -fsyntax-only -fcuda-is-device -verify %s

__attribute__((device)) void df() {
  short h;
  int a;
  // asm with PTX constraints. Some of them are PTX-specific.
  __asm__("output constraints"
          : "=h"(h), // .u16 reg, OK
            "=a"(a)  // expected-error {{invalid output constraint '=a' in asm}}
          :          // None
          );
  __asm__("input constraints"
          :           // None
          : "f"(0.0), // .f32 reg, OK
            "d"(0.0), // .f64 reg, OK
            "h"(0),   // .u16 reg, OK
            "r"(0),   // .u32 reg, OK
            "l"(0),   // .u64 reg, OK
            "a"(0)    // expected-error {{invalid input constraint 'a' in asm}}
          );
}