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0d04c2b2a9
This reverts r300535 and r300537. The newly added tests in test/CodeGen/AArch64/GlobalISel/arm64-fallback.ll produces slightly different code between LLVM versions being built with different compilers. E.g., dependent on the compiler LLVM is built with, either one of the following can be produced: remark: <unknown>:0:0: unable to legalize instruction: %vreg0<def>(p0) = G_EXTRACT_VECTOR_ELT %vreg1, %vreg2; (in function: vector_of_pointers_extractelement) remark: <unknown>:0:0: unable to legalize instruction: %vreg2<def>(p0) = G_EXTRACT_VECTOR_ELT %vreg1, %vreg0; (in function: vector_of_pointers_extractelement) Non-determinism like this is clearly a bad thing, so reverting this until I can find and fix the root cause of the non-determinism. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300538 91177308-0d34-0410-b5e6-96231b3b80d8
39 lines
1.4 KiB
C++
39 lines
1.4 KiB
C++
//===-- llvm/CodeGen/LowLevelType.cpp -------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file This file implements the more header-heavy bits of the LLT class to
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/// avoid polluting users' namespaces.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/LowLevelType.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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LLT llvm::getLLTForType(Type &Ty, const DataLayout &DL) {
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if (auto VTy = dyn_cast<VectorType>(&Ty)) {
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auto NumElements = VTy->getNumElements();
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auto ScalarSizeInBits = VTy->getElementType()->getPrimitiveSizeInBits();
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if (NumElements == 1)
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return LLT::scalar(ScalarSizeInBits);
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return LLT::vector(NumElements, ScalarSizeInBits);
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} else if (auto PTy = dyn_cast<PointerType>(&Ty)) {
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return LLT::pointer(PTy->getAddressSpace(), DL.getTypeSizeInBits(&Ty));
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} else if (Ty.isSized()) {
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// Aggregates are no different from real scalars as far as GlobalISel is
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// concerned.
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auto SizeInBits = DL.getTypeSizeInBits(&Ty);
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assert(SizeInBits != 0 && "invalid zero-sized type");
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return LLT::scalar(SizeInBits);
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}
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return LLT();
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}
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