llvm-project/clang/test/Sema/ext_vector_comparisons.c
Aaron Ballman 8c5edb59cf Use functions with prototypes when appropriate; NFC
A significant number of our tests in C accidentally use functions
without prototypes. This patch converts the function signatures to have
a prototype for the situations where the test is not specific to K&R C
declarations. e.g.,

  void func();

becomes

  void func(void);

This is the second batch of tests being updated (there are a significant
number of other tests left to be updated).
2022-02-04 15:20:36 -05:00

47 lines
1.5 KiB
C

// RUN: %clang_cc1 -fsyntax-only -verify -Wno-unreachable-code %s
typedef __attribute__(( ext_vector_type(4) )) int int4;
static int4 test1(void) {
int4 vec, rv;
// comparisons to self...
return vec == vec; // expected-warning{{self-comparison always evaluates to true}}
return vec != vec; // expected-warning{{self-comparison always evaluates to false}}
return vec < vec; // expected-warning{{self-comparison always evaluates to false}}
return vec <= vec; // expected-warning{{self-comparison always evaluates to true}}
return vec > vec; // expected-warning{{self-comparison always evaluates to false}}
return vec >= vec; // expected-warning{{self-comparison always evaluates to true}}
}
typedef __attribute__(( ext_vector_type(4) )) float float4;
static int4 test2(void) {
float4 vec, rv;
// comparisons to self. no warning, they're floats
return vec == vec; // no-warning
return vec != vec; // no-warning
return vec < vec; // no-warning
return vec <= vec; // no-warning
return vec > vec; // no-warning
return vec >= vec; // no-warning
}
static int4 test3(void) {
int4 i0, i1;
return i0 > i1 ? i0 : i1; // no-error
return i0 ? i0 : i1; // no-error
}
static float4 test4(void) {
float4 f0, f1;
// This would actually generate implicit casting warning
// under Weverything flag but we don't really care here
return f0 > f1 ? f0 : f1; // no-error
return f0 ? f0 : f1; // expected-error {{used type 'float4' (vector of 4 'float' values) where floating point type is not allowed}}
}