A MemorySSAWalker that does no alias queries, or anything else. More...
#include "llvm/Analysis/MemorySSA.h"
Public Member Functions | |
| MemoryAccess * | getClobberingMemoryAccess (MemoryAccess *, BatchAAResults &) override |
| Does the same thing as getClobberingMemoryAccess(const Instruction *I), but takes a MemoryAccess instead of an Instruction. | |
| MemoryAccess * | getClobberingMemoryAccess (MemoryAccess *, const MemoryLocation &, BatchAAResults &) override |
| Given a potentially clobbering memory access and a new location, calling this will give you the nearest dominating clobbering MemoryAccess (by skipping non-aliasing def links). | |
| MemoryAccess * | getClobberingMemoryAccess (const Instruction *I, BatchAAResults &AA) |
| Given a memory Mod/Ref/ModRef'ing instruction, calling this will give you the nearest dominating MemoryAccess that Mod's the location the instruction accesses (by skipping any def which AA can prove does not alias the location(s) accessed by the instruction given). | |
| virtual MemoryAccess * | getClobberingMemoryAccess (MemoryAccess *, BatchAAResults &AA)=0 |
| Does the same thing as getClobberingMemoryAccess(const Instruction *I), but takes a MemoryAccess instead of an Instruction. | |
| virtual MemoryAccess * | getClobberingMemoryAccess (MemoryAccess *, const MemoryLocation &, BatchAAResults &AA)=0 |
| Given a potentially clobbering memory access and a new location, calling this will give you the nearest dominating clobbering MemoryAccess (by skipping non-aliasing def links). | |
| MemoryAccess * | getClobberingMemoryAccess (const Instruction *I) |
| MemoryAccess * | getClobberingMemoryAccess (MemoryAccess *MA) |
| MemoryAccess * | getClobberingMemoryAccess (MemoryAccess *MA, const MemoryLocation &Loc) |
 Public Member Functions inherited from llvm::MemorySSAWalker | |
| MemorySSAWalker (MemorySSA *) | |
| virtual | ~MemorySSAWalker ()=default |
| MemoryAccess * | getClobberingMemoryAccess (const Instruction *I, BatchAAResults &AA) |
| Given a memory Mod/Ref/ModRef'ing instruction, calling this will give you the nearest dominating MemoryAccess that Mod's the location the instruction accesses (by skipping any def which AA can prove does not alias the location(s) accessed by the instruction given). | |
| virtual MemoryAccess * | getClobberingMemoryAccess (MemoryAccess *, BatchAAResults &AA)=0 |
| Does the same thing as getClobberingMemoryAccess(const Instruction *I), but takes a MemoryAccess instead of an Instruction. | |
| virtual MemoryAccess * | getClobberingMemoryAccess (MemoryAccess *, const MemoryLocation &, BatchAAResults &AA)=0 |
| Given a potentially clobbering memory access and a new location, calling this will give you the nearest dominating clobbering MemoryAccess (by skipping non-aliasing def links). | |
| MemoryAccess * | getClobberingMemoryAccess (const Instruction *I) |
| MemoryAccess * | getClobberingMemoryAccess (MemoryAccess *MA) |
| MemoryAccess * | getClobberingMemoryAccess (MemoryAccess *MA, const MemoryLocation &Loc) |
| virtual void | invalidateInfo (MemoryAccess *) |
| Given a memory access, invalidate anything this walker knows about that access. | |
Additional Inherited Members | |
| Public Types inherited from llvm::MemorySSAWalker | |
| using | MemoryAccessSet = SmallVector< MemoryAccess *, 8 > |
| Protected Attributes inherited from llvm::MemorySSAWalker | |
| MemorySSA * | MSSA |
Detailed Description
A MemorySSAWalker that does no alias queries, or anything else.
It simply returns the links as they were constructed by the builder.
Definition at line 1103 of file MemorySSA.h.
Member Function Documentation
◆ getClobberingMemoryAccess() [1/8]
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inline |
Definition at line 1072 of file MemorySSA.h.
◆ getClobberingMemoryAccess() [2/8]
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inline |
Given a memory Mod/Ref/ModRef'ing instruction, calling this will give you the nearest dominating MemoryAccess that Mod's the location the instruction accesses (by skipping any def which AA can prove does not alias the location(s) accessed by the instruction given).
Note that this will return a single access, and it must dominate the Instruction, so if an operand of a MemoryPhi node Mod's the instruction, this will return the MemoryPhi, not the operand. This means that given: if (a) { 1 = MemoryDef(liveOnEntry) store a } else { 2 = MemoryDef(liveOnEntry) store b } 3 = MemoryPhi(2, 1) MemoryUse(3) load a
calling this API on load(a) will return the MemoryPhi, not the MemoryDef in the if (a) branch.
Definition at line 1045 of file MemorySSA.h.
◆ getClobberingMemoryAccess() [3/8]
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overridevirtual |
Does the same thing as getClobberingMemoryAccess(const Instruction *I), but takes a MemoryAccess instead of an Instruction.
Implements llvm::MemorySSAWalker.
Definition at line 2615 of file MemorySSA.cpp.
◆ getClobberingMemoryAccess() [4/8]
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virtual |
Does the same thing as getClobberingMemoryAccess(const Instruction *I), but takes a MemoryAccess instead of an Instruction.
Implements llvm::MemorySSAWalker.
◆ getClobberingMemoryAccess() [5/8]
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overridevirtual |
Given a potentially clobbering memory access and a new location, calling this will give you the nearest dominating clobbering MemoryAccess (by skipping non-aliasing def links).
This version of the function is mainly used to disambiguate phi translated pointers, where the value of a pointer may have changed from the initial memory access. Note that this expects to be handed either a MemoryUse, or an already potentially clobbering access. Unlike the above API, if given a MemoryDef that clobbers the pointer as the starting access, it will return that MemoryDef, whereas the above would return the clobber starting from the use side of the memory def.
Implements llvm::MemorySSAWalker.
Definition at line 2622 of file MemorySSA.cpp.
◆ getClobberingMemoryAccess() [6/8]
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virtual |
Given a potentially clobbering memory access and a new location, calling this will give you the nearest dominating clobbering MemoryAccess (by skipping non-aliasing def links).
This version of the function is mainly used to disambiguate phi translated pointers, where the value of a pointer may have changed from the initial memory access. Note that this expects to be handed either a MemoryUse, or an already potentially clobbering access. Unlike the above API, if given a MemoryDef that clobbers the pointer as the starting access, it will return that MemoryDef, whereas the above would return the clobber starting from the use side of the memory def.
Implements llvm::MemorySSAWalker.
◆ getClobberingMemoryAccess() [7/8]
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inline |
Definition at line 1077 of file MemorySSA.h.
◆ getClobberingMemoryAccess() [8/8]
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inline |
Definition at line 1082 of file MemorySSA.h.
The documentation for this class was generated from the following files:
- include/llvm/Analysis/MemorySSA.h
- lib/Analysis/MemorySSA.cpp
