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author | Chris Lattner <sabre@nondot.org> | 2006-11-15 18:00:10 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2006-11-15 18:00:10 +0000 |
commit | b71fd7897f6b4500cdbe602c5a9907316750cf5a (patch) | |
tree | bfde4bc0d508d66aa539e308ff37ea881c711a67 /include/llvm/CodeGen | |
parent | d6842e4e1805feaaf865a7b6bf59b35e4c5e0759 (diff) | |
download | llvm-b71fd7897f6b4500cdbe602c5a9907316750cf5a.tar.gz llvm-b71fd7897f6b4500cdbe602c5a9907316750cf5a.tar.bz2 llvm-b71fd7897f6b4500cdbe602c5a9907316750cf5a.tar.xz |
Simplify IntrinsicLowering and clarify that it is only for use by the
CBE and interpreter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31755 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen')
-rw-r--r-- | include/llvm/CodeGen/IntrinsicLowering.h | 33 |
1 files changed, 3 insertions, 30 deletions
diff --git a/include/llvm/CodeGen/IntrinsicLowering.h b/include/llvm/CodeGen/IntrinsicLowering.h index e56a646786..ae7526c369 100644 --- a/include/llvm/CodeGen/IntrinsicLowering.h +++ b/include/llvm/CodeGen/IntrinsicLowering.h @@ -9,24 +9,7 @@ // // This file defines the IntrinsicLowering interface. This interface allows // addition of domain-specific or front-end specific intrinsics to LLVM without -// having to modify all of the code generators to support the new intrinsic. -// Later, as desired, targets can incrementally add support for particular -// intrinsic functions, as desired, to generate better code. -// -// If a code generator cannot handle or does not know about an intrinsic -// function, it will use the intrinsic lowering interface to change an intrinsic -// function name into a concrete function name which can be used to implement -// the functionality of the intrinsic. For example, llvm.memcpy can be -// implemented as a call to the math library 'memcpy' function if the target -// doesn't have hardware support for the intrinsic, or if it has not yet been -// implemented yet. -// -// Another use for this interface is the addition of domain-specific intrinsics. -// The default implementation of this interface would then lower the intrinsics -// to noop calls, allowing the direct execution of programs with instrumentation -// or other hooks placed in them. When a specific tool or flag is used, a -// different implementation of these interfaces may be used, which activates the -// intrinsics in some way. +// having to modify all of the C backend or interpreter. // //===----------------------------------------------------------------------===// @@ -42,12 +25,11 @@ namespace llvm { class IntrinsicLowering { public: IntrinsicLowering() {} - virtual ~IntrinsicLowering() {} /// AddPrototypes - This method, if called, causes all of the prototypes /// that might be needed by an intrinsic lowering implementation to be /// inserted into the module specified. - virtual void AddPrototypes(Module &M) = 0; + void AddPrototypes(Module &M); /// LowerIntrinsicCall - This method returns the LLVM function which should /// be used to implement the specified intrinsic function call. If an @@ -59,16 +41,7 @@ namespace llvm { /// _after_ the call instruction and the call is deleted. The caller must /// be capable of handling this kind of change. /// - virtual void LowerIntrinsicCall(CallInst *CI) = 0; - }; - - /// DefaultIntrinsicLower - This is the default intrinsic lowering pass which - /// is used if no other one is specified. Custom intrinsic lowering - /// implementations should pass any unhandled intrinsics to this - /// implementation to allow for future extensibility. - struct DefaultIntrinsicLowering : public IntrinsicLowering { - virtual void AddPrototypes(Module &M); - virtual void LowerIntrinsicCall(CallInst *CI); + void LowerIntrinsicCall(CallInst *CI); }; } |