mirror of
https://github.com/Gericom/teak-llvm.git
synced 2025-06-23 21:45:46 -04:00
0e525a4d6b
Summary: The definition of the builtins __builtin_bswap32, __builtin_bitreverse32, __builtin_rotateleft32 and __builtin_rotateright32 rely on that the int type is 32 bits wide on the target. The defintions of the builtins __builtin_bswap64, __builtin_bitreverse64, __builtin_rotateleft64, and __builtin_rotateright64 rely on that the long long type is 64 bits wide. On targets where this is not the case (e.g. AVR) clang will generate faulty code (wrong llvm assembler intrinsics). This patch add support for using 'Z' (the int32_t type) in Bultins.def. The builtins above are changed to be based on the int32_t type instead of the int type, and the int64_t type instead of the long long type. The AVR backend (experimental) have a native int type that is only 16 bits wide. The supplied testcase will therefore fail if running the testcase on trunk as clang will convert e.g. __builtin_bitreverse32 into llvm.bitreverse.i16 on AVR. Reviewers: dylanmckay, spatel, rsmith, efriedma Reviewed By: efriedma Differential Revision: https://reviews.llvm.org/D61845 llvm-svn: 360863
53 lines
1.9 KiB
C++
53 lines
1.9 KiB
C++
// RUN: %clang_cc1 -std=c++11 -triple x86_64-linux-gnu -ffreestanding -verify %s
|
|
// RUN: %clang_cc1 -std=c++11 -triple i686-pc-linux-gnu -ffreestanding -verify %s
|
|
// RUN: %clang_cc1 -std=c++11 -triple avr-unknown-unknown -ffreestanding -verify %s
|
|
|
|
// expected-no-diagnostics
|
|
|
|
// Test that checks that the builtins return the same type as the stdint.h type
|
|
// withe the same witdh. This is done by first declaring a variable of a stdint
|
|
// type of the correct width and the redeclaring the variable with the type that
|
|
// the builting return. If the types are different you should the an error from
|
|
// clang of the form:
|
|
// "redefinition of '<varname>' with a different type: '<type1>' vs '<type2>'
|
|
// (with gcc you get an error message
|
|
// "conflicting declaration '<type> <varname>'").
|
|
|
|
#include <stdint.h>
|
|
|
|
extern uint16_t bswap16;
|
|
decltype(__builtin_bswap16(0)) bswap16 = 42;
|
|
extern uint32_t bswap32;
|
|
decltype(__builtin_bswap32(0)) bswap32 = 42;
|
|
extern uint64_t bswap64;
|
|
decltype(__builtin_bswap64(0)) bswap64 = 42;
|
|
|
|
#ifdef __clang__
|
|
extern uint8_t bitrev8;
|
|
decltype(__builtin_bitreverse8(0)) bitrev8 = 42;
|
|
extern uint16_t bitrev16;
|
|
decltype(__builtin_bitreverse16(0)) bitrev16 = 42;
|
|
extern uint32_t bitrev32;
|
|
decltype(__builtin_bitreverse32(0)) bitrev32 = 42;
|
|
extern uint64_t bitrev64;
|
|
decltype(__builtin_bitreverse64(0)) bitrev64 = 42;
|
|
|
|
extern uint8_t rotl8;
|
|
decltype(__builtin_rotateleft8(0,0)) rotl8 = 42;
|
|
extern uint16_t rotl16;
|
|
decltype(__builtin_rotateleft16(0,0)) rotl16 = 42;
|
|
extern uint32_t rotl32;
|
|
decltype(__builtin_rotateleft32(0,0)) rotl32 = 42;
|
|
extern uint64_t rotl64;
|
|
decltype(__builtin_rotateleft64(0,0)) rotl64 = 42;
|
|
|
|
extern uint8_t rotr8;
|
|
decltype(__builtin_rotateright8(0,0)) rotr8 = 42;
|
|
extern uint16_t rotr16;
|
|
decltype(__builtin_rotateright16(0,0)) rotr16 = 42;
|
|
extern uint32_t rotr32;
|
|
decltype(__builtin_rotateright32(0,0)) rotr32 = 42;
|
|
extern uint64_t rotr64;
|
|
decltype(__builtin_rotateright64(0,0)) rotr64 = 42;
|
|
#endif
|