[clang-tidy] fix unit tests for dropped _Float16 support in X86

[JonasToth]

Summary

Because _Float16 was disabled for X86 targets the unit-tests started failing.
Extract the pieces for _Float16 and run theses tests under AArch64.

[erichkeane]

LGTM, thanks for doing this!

[lebedev.ri]

test/clang-tidy/readability-uppercase-literal-suffix-float16.cpp

2

Targets can be disabled in cmake
This needs something like // REQUIRES: aarch64.
And yes, the tests that hardcoded x86 should require x86 too.

[JonasToth]

• add REQUIRES: <arch> for the readability unit-tests where necessary

[JonasToth]

• Revert "add REQUIRES: <arch> for the readability unit-tests where necessary" as its not necessary because only the frontend is run

[JonasToth]

• last nit, remove the disabled in hexadecimal

[lebedev.ri]

@JonasToth @erichkeane thank you for taking care of this.

test/clang-tidy/readability-uppercase-literal-suffix-float16.cpp

+// RUN: %check_clang_tidy %s readability-uppercase-literal-suffix %t -- -- -target aarch64-linux-gnu -I %S
+
+#include "readability-uppercase-literal-suffix.h"
+
+void float16_normal_literals() {
+  // _Float16
+
+  static constexpr auto v14 = 1.f16;
+  // CHECK-MESSAGES: :[[@LINE-1]]:31: warning: floating point literal has suffix 'f16', which is not uppercase
+  // CHECK-MESSAGES-NEXT: static constexpr auto v14 = 1.f16;
+  // CHECK-MESSAGES-NEXT: ^ ~
+  // CHECK-MESSAGES-NEXT: {{^ *}}F16{{$}}
+  // CHECK-FIXES: static constexpr auto v14 = 1.F16;
+  static_assert(is_same<decltype(v14), const _Float16>::value, "");
+  static_assert(v14 == 1.F16, "");
+
+  static constexpr auto v15 = 1.e0f16;
+  // CHECK-MESSAGES: :[[@LINE-1]]:31: warning: floating point literal has suffix 'f16', which is not uppercase
+  // CHECK-MESSAGES-NEXT: static constexpr auto v15 = 1.e0f16;
+  // CHECK-MESSAGES-NEXT: ^ ~
+  // CHECK-MESSAGES-NEXT: {{^ *}}F16{{$}}
+  // CHECK-FIXES: static constexpr auto v15 = 1.e0F16;
+  static_assert(is_same<decltype(v15), const _Float16>::value, "");
+  static_assert(v15 == 1.F16, "");
+
+  static constexpr auto v16 = 1.F16; // OK.
+  static_assert(is_same<decltype(v16), const _Float16>::value, "");
+  static_assert(v16 == 1.F16, "");
+
+  static constexpr auto v17 = 1.e0F16; // OK.
+  static_assert(is_same<decltype(v17), const _Float16>::value, "");
+  static_assert(v17 == 1.F16, "");
+}
+
+void float16_hexadecimal_literals() {
+// _Float16
+
+  static constexpr auto v13 = 0xfp0f16;
+  // CHECK-MESSAGES: :[[@LINE-1]]:31: warning: floating point literal has suffix 'f16', which is not uppercase
+  // CHECK-MESSAGES-NEXT: static constexpr auto v13 = 0xfp0f16;
+  // CHECK-MESSAGES-NEXT: ^    ~
+  // CHECK-MESSAGES-NEXT: {{^ *}}F16{{$}}
+  // CHECK-FIXES: static constexpr auto v13 = 0xfp0F16;
+  static_assert(is_same<decltype(v13), const _Float16>::value, "");
+  static_assert(v13 == 0xfp0F16, "");
+
+  static constexpr auto v14 = 0xfp0F16; // OK.
+  static_assert(is_same<decltype(v14), const _Float16>::value, "");
+  static_assert(v14 == 0xfp0F16, "");
+
+}

test/clang-tidy/readability-uppercase-literal-suffix-floating-point.cpp

 // RUN: %check_clang_tidy %s readability-uppercase-literal-suffix %t -- -- -target x86_64-pc-linux-gnu -I %S
 // RUN: grep -Ev "// *[A-Z-]+:" %s > %t.cpp
 // RUN: clang-tidy %t.cpp -checks='-*,readability-uppercase-literal-suffix' -fix -- -target x86_64-pc-linux-gnu -I %S
 // RUN: clang-tidy %t.cpp -checks='-*,readability-uppercase-literal-suffix' -warnings-as-errors='-*,readability-uppercase-literal-suffix' -- -target x86_64-pc-linux-gnu -I %S
 
-// REQUIRES: disabled
-
 #include "readability-uppercase-literal-suffix.h"
 
 void floating_point_suffix() {
   static constexpr auto v0 = 1.; // no literal
   static_assert(is_same<decltype(v0), const double>::value, "");
   static_assert(v0 == 1., "");
 
   static constexpr auto v1 = 1.e0; // no literal
void floating_point_suffix() {
 
   static constexpr auto v12 = 1.Q; // OK.
   static_assert(is_same<decltype(v12), const __float128>::value, "");
   static_assert(v12 == 1., "");
 
   static constexpr auto v13 = 1.e0Q; // OK.
   static_assert(is_same<decltype(v13), const __float128>::value, "");
   static_assert(v13 == 1., "");
-
-  // _Float16
-
-  static constexpr auto v14 = 1.f16;
-  // CHECK-MESSAGES: :[[@LINE-1]]:31: warning: floating point literal has suffix 'f16', which is not uppercase
-  // CHECK-MESSAGES-NEXT: static constexpr auto v14 = 1.f16;
-  // CHECK-MESSAGES-NEXT: ^ ~
-  // CHECK-MESSAGES-NEXT: {{^ *}}F16{{$}}
-  // CHECK-FIXES: static constexpr auto v14 = 1.F16;
-  static_assert(is_same<decltype(v14), const _Float16>::value, "");
-  static_assert(v14 == 1.F16, "");
-
-  static constexpr auto v15 = 1.e0f16;
-  // CHECK-MESSAGES: :[[@LINE-1]]:31: warning: floating point literal has suffix 'f16', which is not uppercase
-  // CHECK-MESSAGES-NEXT: static constexpr auto v15 = 1.e0f16;
-  // CHECK-MESSAGES-NEXT: ^ ~
-  // CHECK-MESSAGES-NEXT: {{^ *}}F16{{$}}
-  // CHECK-FIXES: static constexpr auto v15 = 1.e0F16;
-  static_assert(is_same<decltype(v15), const _Float16>::value, "");
-  static_assert(v15 == 1.F16, "");
-
-  static constexpr auto v16 = 1.F16; // OK.
-  static_assert(is_same<decltype(v16), const _Float16>::value, "");
-  static_assert(v16 == 1.F16, "");
-
-  static constexpr auto v17 = 1.e0F16; // OK.
-  static_assert(is_same<decltype(v17), const _Float16>::value, "");
-  static_assert(v17 == 1.F16, "");
 }
 
 void floating_point_complex_suffix() {
   // _Complex, I
 
   static constexpr auto v14 = 1.i;
   // CHECK-MESSAGES: :[[@LINE-1]]:31: warning: floating point literal has suffix 'i', which is not uppercase
   // CHECK-MESSAGES-NEXT: static constexpr auto v14 = 1.i;

test/clang-tidy/readability-uppercase-literal-suffix-hexadecimal-floating-point.cpp

void floating_point_suffix() {
   // CHECK-MESSAGES-NEXT: {{^ *}}Q{{$}}
   // CHECK-FIXES: static constexpr auto v11 = 0xfp0Q;
   static_assert(is_same<decltype(v11), const __float128>::value, "");
   static_assert(v11 == 0xfp0, "");
 
   static constexpr auto v12 = 0xfp0Q; // OK.
   static_assert(is_same<decltype(v12), const __float128>::value, "");
   static_assert(v12 == 0xfp0, "");
-
-  // _Float16
-
-  static constexpr auto v13 = 0xfp0f16;
-  // CHECK-MESSAGES: :[[@LINE-1]]:31: warning: floating point literal has suffix 'f16', which is not uppercase
-  // CHECK-MESSAGES-NEXT: static constexpr auto v13 = 0xfp0f16;
-  // CHECK-MESSAGES-NEXT: ^    ~
-  // CHECK-MESSAGES-NEXT: {{^ *}}F16{{$}}
-  // CHECK-FIXES: static constexpr auto v13 = 0xfp0F16;
-  static_assert(is_same<decltype(v13), const _Float16>::value, "");
-  static_assert(v13 == 0xfp0F16, "");
-
-  static constexpr auto v14 = 0xfp0F16; // OK.
-  static_assert(is_same<decltype(v14), const _Float16>::value, "");
-  static_assert(v14 == 0xfp0F16, "");
 }
 
 void floating_point_complex_suffix() {
   // _Complex, I
 
   static constexpr auto v14 = 0xfp0i;
   // CHECK-MESSAGES: :[[@LINE-1]]:31: warning: floating point literal has suffix 'i', which is not uppercase
   // CHECK-MESSAGES-NEXT: static constexpr auto v14 = 0xfp0i;