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comparison gen/tollvm.cpp @ 1480:b3ba2c6ff038

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Use `llvm.memset` instead of `_d_array_init_i1` and `_d_array_init_i8`. This exposes what's happening to LLVM, and memset is probably faster than the runtime functions we were using anyway.
author Frits van Bommel <fvbommel wxs.nl>
date Sun, 07 Jun 2009 13:57:59 +0200
parents 83bdf7bed9c5
children d9c5f5a43403
comparison
equal deleted inserted replaced
1479:4f7d50c744ed 1480:b3ba2c6ff038
409 return llvm::ConstantExpr::getGetElementPtr(ptr, v, 2); 409 return llvm::ConstantExpr::getGetElementPtr(ptr, v, 2);
410 } 410 }
411 411
412 ////////////////////////////////////////////////////////////////////////////////////////// 412 //////////////////////////////////////////////////////////////////////////////////////////
413 413
414 void DtoMemSetZero(LLValue* dst, LLValue* nbytes) 414 void DtoMemSet(LLValue* dst, LLValue* val, LLValue* nbytes)
415 { 415 {
416 dst = DtoBitCast(dst,getVoidPtrType()); 416 dst = DtoBitCast(dst,getVoidPtrType());
417 417
418 const LLType* intTy = DtoSize_t(); 418 const LLType* intTy = DtoSize_t();
419 llvm::Function* fn = llvm::Intrinsic::getDeclaration(gIR->module, 419 llvm::Function* fn = llvm::Intrinsic::getDeclaration(gIR->module,
420 llvm::Intrinsic::memset, &intTy, 1); 420 llvm::Intrinsic::memset, &intTy, 1);
421 421
422 gIR->ir->CreateCall4(fn, dst, DtoConstUbyte(0), nbytes, DtoConstUint(0), ""); 422 gIR->ir->CreateCall4(fn, dst, val, nbytes, DtoConstUint(0), "");
423 }
424
425 //////////////////////////////////////////////////////////////////////////////////////////
426
427 void DtoMemSetZero(LLValue* dst, LLValue* nbytes)
428 {
429 DtoMemSet(dst, DtoConstUbyte(0), nbytes);
423 } 430 }
424 431
425 ////////////////////////////////////////////////////////////////////////////////////////// 432 //////////////////////////////////////////////////////////////////////////////////////////
426 433
427 void DtoMemCpy(LLValue* dst, LLValue* src, LLValue* nbytes, unsigned align) 434 void DtoMemCpy(LLValue* dst, LLValue* src, LLValue* nbytes, unsigned align)