llvm-project/clang/test/AST/variadic-promotion.c

// RUN: %clang_cc1 -ast-dump %s | FileCheck %s

void variadic(int, ...);

void test_floating_promotion(__fp16 *f16, float f32, double f64) {
  variadic(3, *f16, f32, f64);

// CHECK: ImplicitCastExpr {{.*}} 'double' <FloatingCast>
// CHECK-NEXT: '__fp16'

// CHECK: ImplicitCastExpr {{.*}} 'double' <FloatingCast>
// CHECK-NEXT: 'float'
}
Also promote fp16 types to double when they're anonymous variadic arguments. __fp16 isn't covered by the standard, but this resolves the oddity that float gets promoted when passed variadically, but not the smaller type. This is required by the AArch64 ABI, and a sane action elsewhere. llvm-svn: 173918 2013-01-30 09:46:55 +00:00			`// RUN: %clang_cc1 -ast-dump %s \| FileCheck %s`

			`void variadic(int, ...);`

			`void test_floating_promotion(__fp16 *f16, float f32, double f64) {`
			`variadic(3, *f16, f32, f64);`

			`// CHECK: ImplicitCastExpr {{.*}} 'double' <FloatingCast>`
Creating a printing policy for "half": Since "half" is an OpenCL keyword and clang accepts __fp16 as an extension for other languages, error messages and metadata (and hence debug info) should refer to the half-precision floating point as "__fp16" instead of "half" when compiling for non-OpenCL languages. This patch creates a new printing policy for half in a similar manner to what is done for bool and wchar_t. Differential Revision: http://llvm-reviews.chandlerc.com/D2952 llvm-svn: 204164 2014-03-18 17:55:18 +00:00			`// CHECK-NEXT: '__fp16'`
Also promote fp16 types to double when they're anonymous variadic arguments. __fp16 isn't covered by the standard, but this resolves the oddity that float gets promoted when passed variadically, but not the smaller type. This is required by the AArch64 ABI, and a sane action elsewhere. llvm-svn: 173918 2013-01-30 09:46:55 +00:00
			`// CHECK: ImplicitCastExpr {{.*}} 'double' <FloatingCast>`
			`// CHECK-NEXT: 'float'`
			`}`