gcc/testsuite/c-c++-common/pr81376.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-original" } */
   3
   4 typedef double c_t;
   5 typedef int a_t;
   6 int f(a_t a1, a_t a2) {
   7   return (c_t) a1 < (c_t) a2;
   8   /* { dg-final { scan-tree-dump "return (<retval> = )?a1 < a2" "original" } } */
   9 }
  10
  11 void f1(short a, short b)
  12 {
  13   volatile int s_s;
  14   s_s = (float) a < (float) b;
  15   /* { dg-final { scan-tree-dump "s_s = a < b" "original" } } */
  16 }
  17
  18 void f2(unsigned short a, unsigned short b)
  19 {
  20   volatile int us_us;
  21   us_us = (float) a < (float) b;
  22   /* { dg-final { scan-tree-dump "us_us = a < b" "original" } } */
  23 }
  24
  25 /* We don't optimize here because neither of integral types is
  26    subset of the other.  */
  27 void f3(unsigned short a, short b)
  28 {
  29   volatile int us_s;
  30   us_s = (float) a < (float) b;
  31   /* { dg-final { scan-tree-dump "us_s = \\(float\\) a < \\(float\\) b" "original" } } */
  32 }
  33
  34 void f4(unsigned short a, int b)
  35 {
  36   volatile int us_i;
  37   us_i = (double) a < (double) b;
  38   /* { dg-final { scan-tree-dump "us_i = \\(int\\) a < b" "original" } } */
  39 }
  40
  41 /* We don't optimize here because neither of integral types is
  42    subset of the other.  */
  43 void f5(short a, unsigned int b)
  44 {
  45   volatile int s_ui;
  46   s_ui = (double) a < (double) b;
  47   /* { dg-final { scan-tree-dump "s_ui = \\(double\\) a < \\(double\\) b" "original" } } */
  48 }