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2016 Jun 13
2
LLVM IR intrinsics placeholder for strings [was Re: Back end with special loop instructions (using LLVM IR intrinsics)]
...Intrinsic<[], [llvm_anyint_ty], []>; > def int_ppc_is_decremented_ctr_nonzero : Intrinsic<[llvm_i1_ty], [], []>; > > And these intrinsics are instantiated in the LLVM program, for example with the > following code in PPCCTRLoops.cpp: > IRBuilder<> CountBuilder(Preheader->getTerminator()); > Module *M = Preheader->getParent()->getParent(); > Value *MTCTRFunc = Intrinsic::getDeclaration(M, Intrinsic::ppc_mtctr,CountType); > CountBuilder.CreateCall(MTCTRFunc, ECValue); > > I have defined also some intrinsi...
2016 May 30
1
Back end with special loop instructions
Hi Alex, You might find it useful to look at how lib/Target/PowerPC/PPCCTRLoops.cpp works. -Hal ----- Original Message ----- > From: "Alex Susu via llvm-dev" <llvm-dev at lists.llvm.org> > To: "llvm-dev" <llvm-dev at lists.llvm.org> > Sent: Monday, May 30, 2016 5:09:37 PM > Subject: [llvm-dev] Back end with special loop instructions > > Hello.
2016 May 30
2
Back end with special loop instructions
Hello. I'm writing a back end for my research SIMD processor that has an assembly language that is blocked structured, with one-level loops. An example program with my assembly language: REPEAT_X_TIMES(Param2) R0 = LS[offset_A]; END_REPEAT; The LLVM code somewhat equivalent to the above ASM program is: vector.body: %index = phi i64 [