Mercurial > projects > ldc
comparison runtime/import/ldc/intrinsics.di @ 1001:7a0238db1962
Implement support for intrinsics returning struct types
(such as llvm.*.with.overflow)
| author | Frits van Bommel <fvbommel wxs.nl> |
|---|---|
| date | Thu, 26 Feb 2009 22:47:06 +0100 |
| parents | 4ac97ec7c18e |
| children | 34bc1945bc85 |
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| 1000:d6895f24dc8f | 1001:7a0238db1962 |
|---|---|
| 330 pragma(intrinsic, "llvm.atomic.load.umax.i#.p0i#") | 330 pragma(intrinsic, "llvm.atomic.load.umax.i#.p0i#") |
| 331 T llvm_atomic_load_umax(T)(T* ptr, T val); | 331 T llvm_atomic_load_umax(T)(T* ptr, T val); |
| 332 pragma(intrinsic, "llvm.atomic.load.umin.i#.p0i#") | 332 pragma(intrinsic, "llvm.atomic.load.umin.i#.p0i#") |
| 333 T llvm_atomic_load_umin(T)(T* ptr, T val); | 333 T llvm_atomic_load_umin(T)(T* ptr, T val); |
| 334 | 334 |
| 335 | |
| 336 // | |
| 337 // ARITHMETIC-WITH-OVERFLOW INTRINSICS | |
| 338 // | |
| 339 | |
| 340 struct OverflowRet(T) { | |
| 341 static assert(is(T : int), T.stringof ~ " is not an integer type!"); | |
| 342 T result; | |
| 343 bool overflow; | |
| 344 } | |
| 345 | |
| 346 // Signed and unsigned addition | |
| 347 pragma(intrinsic, "llvm.sadd.with.overflow.i#") | |
| 348 OverflowRet!(T) llvm_sadd_with_overflow(T)(T lhs, T rhs); | |
| 349 | |
| 350 pragma(intrinsic, "llvm.uadd.with.overflow.i#") | |
| 351 OverflowRet!(T) llvm_uadd_with_overflow(T)(T lhs, T rhs); | |
| 352 | |
| 353 // Signed and unsigned subtraction | |
| 354 pragma(intrinsic, "llvm.ssub.with.overflow.i#") | |
| 355 OverflowRet!(T) llvm_ssub_with_overflow(T)(T lhs, T rhs); | |
| 356 | |
| 357 pragma(intrinsic, "llvm.usub.with.overflow.i#") | |
| 358 OverflowRet!(T) llvm_usub_with_overflow(T)(T lhs, T rhs); | |
| 359 | |
| 360 // Signed and unsigned multiplication | |
| 361 pragma(intrinsic, "llvm.smul.with.overflow.i#") | |
| 362 OverflowRet!(T) llvm_smul_with_overflow(T)(T lhs, T rhs); | |
| 363 | |
| 364 /* Note: LLVM documentations says: | |
| 365 * Warning: 'llvm.umul.with.overflow' is badly broken. | |
| 366 * It is actively being fixed, but it should not currently be used! | |
| 367 * | |
| 368 * See: http://llvm.org/docs/LangRef.html#int_umul_overflow | |
| 369 */ | |
| 370 pragma(intrinsic, "llvm.umul.with.overflow.i#") | |
| 371 OverflowRet!(T) llvm_umul_with_overflow(T)(T lhs, T rhs); | |
| 372 | |
| 373 | |
| 335 // | 374 // |
| 336 // GENERAL INTRINSICS | 375 // GENERAL INTRINSICS |
| 337 // | 376 // |
| 338 | 377 |
| 339 | 378 |