clang/test/Analysis/copypaste/asm.cpp

   1 // RUN: %clang_analyze_cc1 -triple x86_64-unknown-linux -analyzer-checker=alpha.clone.CloneChecker -analyzer-config alpha.clone.CloneChecker:MinimumCloneComplexity=10 -verify %s
   2
   3 // expected-no-diagnostics
   4
   5 int foo1(int src) {
   6   int dst = src;
   7   if (src < 100 && src > 0) {
   8
   9     asm ("mov %1, %0\n\t"
  10          "add $1, %0"
  11          : "=r" (dst)
  12          : "r" (src));
  13
  14   }
  15   return dst;
  16 }
  17
  18 // Identical to foo1 except that it adds two instead of one, so it's no clone.
  19 int foo2(int src) {
  20   int dst = src;
  21   if (src < 100 && src > 0) {
  22
  23     asm ("mov %1, %0\n\t"
  24          "add $2, %0"
  25          : "=r" (dst)
  26          : "r" (src));
  27
  28   }
  29   return dst;
  30 }
  31
  32 // Identical to foo1 except that its a volatile asm statement, so it's no clone.
  33 int foo3(int src) {
  34   int dst = src;
  35   if (src < 100 && src > 0) {
  36
  37     asm volatile ("mov %1, %0\n\t"
  38          "add $1, %0"
  39          : "=r" (dst)
  40          : "r" (src));
  41
  42   }
  43   return dst;
  44 }