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Diffstat (limited to 'test/Sema/conversion-target-dep.c')
| -rw-r--r-- | test/Sema/conversion-target-dep.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/Sema/conversion-target-dep.c b/test/Sema/conversion-target-dep.c new file mode 100644 index 0000000000..e16685fa06 --- /dev/null +++ b/test/Sema/conversion-target-dep.c @@ -0,0 +1,24 @@ +// RUN: %clang_cc1 -Wdouble-promotion -Wimplicit-float-conversion %s -triple x86_64-apple-macosx10.12 -verify=x86,expected +// RUN: %clang_cc1 -Wdouble-promotion -Wimplicit-float-conversion %s -triple armv7-apple-ios9.0 -verify=arm,expected + +// On ARM, long double and double both map to double precision 754s, so there +// isn't any reason to warn on conversions back and forth. + +long double ld; +double d; +_Float16 f16; // x86-error {{_Float16 is not supported on this target}} + +int main() { + ld = d; // x86-warning {{implicit conversion increases floating-point precision: 'double' to 'long double'}} + d = ld; // x86-warning {{implicit conversion loses floating-point precision: 'long double' to 'double'}} + + ld += d; // x86-warning {{implicit conversion increases floating-point precision: 'double' to 'long double'}} + d += ld; // x86-warning {{implicit conversion when assigning computation result loses floating-point precision: 'long double' to 'double'}} + + f16 = ld; // expected-warning {{implicit conversion loses floating-point precision: 'long double' to '_Float16'}} + ld = f16; // expected-warning {{implicit conversion increases floating-point precision: '_Float16' to 'long double'}} + + f16 += ld; // expected-warning {{implicit conversion when assigning computation result loses floating-point precision: 'long double' to '_Float16'}} + ld += f16; // expected-warning {{implicit conversion increases floating-point precision: '_Float16' to 'long double'}} +} + |