Viewing file:  pr103973-13.C (1.23 KB) -rw-r--r--
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// PR target/103973
// { dg-do run }
// { dg-options "-O2 -ffast-math -std=c++20 -save-temps" }
// { dg-final { scan-assembler-not "'\t\[v\]?ucomisd" { target { ! ia32 } } } }
// { dg-final { scan-assembler-times "\t\[v\]?comisd" 2 { target { ! ia32 } } } }
#include <compare>
#ifndef double_type
#define double_type double
#endif
__attribute__((noipa)) auto
foo (double_type a, double_type b)
{
return a <=> b;
}
__attribute__((noipa)) int
bar (double_type a, double_type b)
{
auto c = foo (a, b);
if (c == std::partial_ordering::less)
return -1;
if (c == std::partial_ordering::equivalent)
return 0;
return 1;
}
__attribute__((noipa)) auto
baz (double_type a)
{
return a <=> 0.0f;
}
__attribute__((noipa)) int
qux (double_type a)
{
auto c = baz (a);
if (c == std::partial_ordering::greater)
return 1;
if (c == std::partial_ordering::equivalent)
return 0;
return -1;
}
int
main ()
{
double_type m5 = -5.0;
double_type p5 = 5.0;
double_type p0 = 0.0;
if (bar (p5, p5) != 0 || bar (m5, m5) != 0)
__builtin_abort ();
if (bar (m5, p5) != -1 || bar (p5, m5) != 1)
__builtin_abort ();
if (qux (p0) != 0)
__builtin_abort ();
if (qux (m5) != -1 || qux (p5) != 1)
__builtin_abort ();
return 0;
}
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