File: inline-asm-matching-ppc-vsx.c

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,799,624 kB
  • sloc: cpp: 6,428,607; ansic: 1,383,196; asm: 793,408; python: 223,504; objc: 75,364; f90: 60,502; lisp: 33,869; pascal: 15,282; sh: 9,684; perl: 7,453; ml: 4,937; awk: 3,523; makefile: 2,889; javascript: 2,149; xml: 888; fortran: 619; cs: 573
file content (20 lines) | stat: -rw-r--r-- 625 bytes parent folder | download | duplicates (15) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
// REQUIRES: powerpc-registered-target

// RUN: %clang_cc1 -triple powerpc64le-unknown-linux-gnu -target-feature +vsx \
// RUN:   -target-cpu pwr9 -emit-llvm %s -o - | FileCheck %s

// This case is to test VSX register support in the clobbers list for inline asm.
void testVSX (void) {
  unsigned int a = 0;
  unsigned int *dbell=&a;
  int d;
  __asm__ __volatile__ (
    "lxvw4x  %%vs32, 0, %2\n\t"
    "stxvw4x %%vs32, 0, %1"
    : "=m"(*(volatile unsigned int*)(dbell))
    : "r" (dbell), "r" (&d)
    : "vs32"
  );
}

// CHECK: call void asm sideeffect "lxvw4x  %vs32, 0, $2\0A\09stxvw4x %vs32, 0, $1", "=*m,r,r,~{vs32}"