clang/test/CodeGen/builtin_float.c

// RUN: %clang_cc1 -emit-llvm -triple x86_64-windows-pc -o - %s | FileCheck %s --check-prefixes=CHECK,FP16
// RUN: %clang_cc1 -emit-llvm -triple ppc64-be -o - %s -DNO_FP16 | FileCheck %s --check-prefixes=CHECK,NOFP16

// test to ensure that these builtins don't do the variadic promotion of float->double.
void test_floats(float f1, float f2) {
  (void)__builtin_isgreater(f1, f2);
  // CHECK: fcmp ogt float
  // CHECK-NEXT: zext i1
  (void)__builtin_isgreaterequal(f1, f2);
  // CHECK: fcmp oge float
  // CHECK-NEXT: zext i1
  (void)__builtin_isless(f1, f2);
  // CHECK: fcmp olt float
  // CHECK-NEXT: zext i1
  (void)__builtin_islessequal(f1, f2);
  // CHECK: fcmp ole float
  // CHECK-NEXT: zext i1
  (void)__builtin_islessgreater(f1, f2);
  // CHECK: fcmp one float
  // CHECK-NEXT: zext i1
  (void)__builtin_isunordered(f1, f2);
  // CHECK: fcmp uno float
  // CHECK-NEXT: zext i1
}

void test_doubles(double d1, double f2) {
  (void)__builtin_isgreater(d1, f2);
  // CHECK: fcmp ogt double
  // CHECK-NEXT: zext i1
  (void)__builtin_isgreaterequal(d1, f2);
  // CHECK: fcmp oge double
  // CHECK-NEXT: zext i1
  (void)__builtin_isless(d1, f2);
  // CHECK: fcmp olt double
  // CHECK-NEXT: zext i1
  (void)__builtin_islessequal(d1, f2);
  // CHECK: fcmp ole double
  // CHECK-NEXT: zext i1
  (void)__builtin_islessgreater(d1, f2);
  // CHECK: fcmp one double
  // CHECK-NEXT: zext i1
  (void)__builtin_isunordered(d1, f2);
  // CHECK: fcmp uno double
  // CHECK-NEXT: zext i1
}

void test_half(__fp16 *H, __fp16 *H2) {
  (void)__builtin_isgreater(*H, *H2);
  // CHECK: fcmp ogt float
  // CHECK-NEXT: zext i1
  (void)__builtin_isinf(*H);
  // FP16: call i1 @llvm.is.fpclass.f16(half %{{.*}}, i32 516)
  // NOFP16: call i1 @llvm.is.fpclass.f32(float %{{.*}}, i32 516)
}

void test_mixed(double d1, float f2) {
  (void)__builtin_isgreater(d1, f2);
  // CHECK: fpext float {{.*}} to double
  // CHECK-NEXT: fcmp ogt double
  // CHECK-NEXT: zext i1
  (void)__builtin_isgreaterequal(d1, f2);
  // CHECK: fpext float {{.*}} to double
  // CHECK-NEXT: fcmp oge double
  // CHECK-NEXT: zext i1
  (void)__builtin_isless(d1, f2);
  // CHECK: fpext float {{.*}} to double
  // CHECK-NEXT: fcmp olt double
  // CHECK-NEXT: zext i1
  (void)__builtin_islessequal(d1, f2);
  // CHECK: fpext float {{.*}} to double
  // CHECK-NEXT: fcmp ole double
  // CHECK-NEXT: zext i1
  (void)__builtin_islessgreater(d1, f2);
  // CHECK: fpext float {{.*}} to double
  // CHECK-NEXT: fcmp one double
  // CHECK-NEXT: zext i1
  (void)__builtin_isunordered(d1, f2);
  // CHECK: fpext float {{.*}} to double
  // CHECK-NEXT: fcmp uno double
  // CHECK-NEXT: zext i1
}