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d1c89447ca
Summary: - Add CoreCLR to if/else ladders and switches as appropriate. - Rename isMSVCEHPersonality to isFuncletEHPersonality to better reflect what it captures. Reviewers: majnemer, andrew.w.kaylor, rnk Subscribers: pgavlin, AndyAyers, llvm-commits Differential Revision: http://reviews.llvm.org/D13449 llvm-svn: 249455
85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
//===- LibCallSemantics.h - Describe library semantics --------------------===//
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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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// This file defines interfaces that can be used to describe language specific
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// runtime library interfaces (e.g. libc, libm, etc) to LLVM optimizers.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ANALYSIS_LIBCALLSEMANTICS_H
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#define LLVM_ANALYSIS_LIBCALLSEMANTICS_H
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#include "llvm/Analysis/AliasAnalysis.h"
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namespace llvm {
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class InvokeInst;
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enum class EHPersonality {
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Unknown,
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GNU_Ada,
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GNU_C,
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GNU_CXX,
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GNU_ObjC,
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MSVC_X86SEH,
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MSVC_Win64SEH,
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MSVC_CXX,
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CoreCLR
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};
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/// \brief See if the given exception handling personality function is one
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/// that we understand. If so, return a description of it; otherwise return
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/// Unknown.
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EHPersonality classifyEHPersonality(const Value *Pers);
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/// \brief Returns true if this personality function catches asynchronous
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/// exceptions.
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inline bool isAsynchronousEHPersonality(EHPersonality Pers) {
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// The two SEH personality functions can catch asynch exceptions. We assume
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// unknown personalities don't catch asynch exceptions.
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switch (Pers) {
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case EHPersonality::MSVC_X86SEH:
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case EHPersonality::MSVC_Win64SEH:
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return true;
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default: return false;
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}
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llvm_unreachable("invalid enum");
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}
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/// \brief Returns true if this is a personality function that invokes
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/// handler funclets (which must return to it).
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inline bool isFuncletEHPersonality(EHPersonality Pers) {
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switch (Pers) {
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case EHPersonality::MSVC_CXX:
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case EHPersonality::MSVC_X86SEH:
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case EHPersonality::MSVC_Win64SEH:
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case EHPersonality::CoreCLR:
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return true;
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default: return false;
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}
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llvm_unreachable("invalid enum");
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}
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/// \brief Return true if this personality may be safely removed if there
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/// are no invoke instructions remaining in the current function.
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inline bool isNoOpWithoutInvoke(EHPersonality Pers) {
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switch (Pers) {
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case EHPersonality::Unknown:
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return false;
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// All known personalities currently have this behavior
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default: return true;
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}
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llvm_unreachable("invalid enum");
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}
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bool canSimplifyInvokeNoUnwind(const Function *F);
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} // end namespace llvm
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#endif
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