llvm-project/clang/test/CodeGen/char-literal.c

94 lines
2.6 KiB
C

// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck -check-prefix=C %s
// RUN: %clang_cc1 -x c++ -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck -check-prefix=C %s
// RUN: %clang_cc1 -x c++ -std=c++11 -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck -check-prefix=CPP0X %s
#include <stddef.h>
int main() {
// CHECK-C: store i8 97
// CHECK-CPP0X: store i8 97
char a = 'a';
// Should pick second character.
// CHECK-C: store i8 98
// CHECK-CPP0X: store i8 98
char b = 'ab';
// CHECK-C: store i32 97
// CHECK-CPP0X: store i32 97
wchar_t wa = L'a';
// Should pick second character.
// CHECK-C: store i32 98
// CHECK-CPP0X: store i32 98
wchar_t wb = L'ab';
#if __cplusplus >= 201103L
// CHECK-CPP0X: store i16 97
char16_t ua = u'a';
// Should pick second character.
// CHECK-CPP0X: store i16 98
char16_t ub = u'ab';
// CHECK-CPP0X: store i32 97
char32_t Ua = U'a';
// Should pick second character.
// CHECK-CPP0X: store i32 98
char32_t Ub = U'ab';
#endif
// Should pick last character and store its lowest byte.
// This does not match gcc, which takes the last character, converts it to
// utf8, and then picks the second-lowest byte of that (they probably store
// the utf8 in uint16_ts internally and take the lower byte of that).
// CHECK-C: store i8 48
// CHECK-CPP0X: store i8 48
char c = '\u1120\u0220\U00102030';
// CHECK-C: store i32 61451
// CHECK-CPP0X: store i32 61451
wchar_t wc = L'\uF00B';
#if __cplusplus >= 201103L
// -4085 == 0xf00b
// CHECK-CPP0X: store i16 -4085
char16_t uc = u'\uF00B';
// CHECK-CPP0X: store i32 61451
char32_t Uc = U'\uF00B';
#endif
// CHECK-C: store i32 1110027
// CHECK-CPP0X: store i32 1110027
wchar_t wd = L'\U0010F00B';
#if __cplusplus >= 201103L
// Should take lower word of the 4byte UNC sequence. This does not match
// gcc. I don't understand what gcc does (it looks like it converts to utf16,
// then takes the second (!) utf16 word, swaps the lower two nibbles, and
// stores that?).
// CHECK-CPP0X: store i16 -4085
char16_t ud = u'\U0010F00B'; // has utf16 encoding dbc8 dcb0
// CHECK-CPP0X: store i32 1110027
char32_t Ud = U'\U0010F00B';
#endif
// Should pick second character.
// CHECK-C: store i32 1110027
// CHECK-CPP0X: store i32 1110027
wchar_t we = L'\u1234\U0010F00B';
#if __cplusplus >= 201103L
// Should pick second character.
// CHECK-CPP0X: store i16 -4085
char16_t ue = u'\u1234\U0010F00B';
// Should pick second character.
// CHECK-CPP0X: store i32 1110027
char32_t Ue = U'\u1234\U0010F00B';
#endif
}