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Target specific ifcvt code duplication limit.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37384 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2007-06-01 08:25:24 +00:00
parent 398898cc6a
commit 59aefd15e5
1 changed files with 21 additions and 3 deletions
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24
include/llvm/Target/TargetLowering.h
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@@ -440,6 +440,13 @@ public:
return IfCvtBlockSizeLimit;
}
/// getIfCvtDupBlockLimit - returns the target specific size limit for a
/// block to be considered for duplication. Any block whose size is greater
/// should not be duplicated to facilitate its predication.
virtual unsigned getIfCvtDupBlockSizeLimit() const {
return IfCvtDupBlockSizeLimit;
}
/// getPreIndexedAddressParts - returns true by value, base pointer and
/// offset pointer and addressing mode by reference if the node's address
/// can be legally represented as pre-indexed load / store address.
@@ -758,11 +765,18 @@ protected:
}
/// setIfCvtBlockSizeLimit - Set the target's if-conversion block size
/// (in number of instructions); default is 2.
/// limit (in number of instructions); default is 2.
void setIfCvtBlockSizeLimit(unsigned Limit) {
IfCvtBlockSizeLimit = Limit;
}
/// setIfCvtDupBlockSizeLimit - Set the target's block size limit (in number
/// of instructions) to be considered for code duplication during
/// if-conversion; default is 2.
void setIfCvtDupBlockSizeLimit(unsigned Limit) {
IfCvtDupBlockSizeLimit = Limit;
}
public:
//===--------------------------------------------------------------------===//
@@ -995,10 +1009,14 @@ private:
/// buffers
unsigned JumpBufAlignment;
/// IfCvtBlockSizeLimit - The maximum allowed block size for if-conversion.
///
/// IfCvtBlockSizeLimit - The maximum allowed size for a block to be
/// if-converted.
unsigned IfCvtBlockSizeLimit;
/// IfCvtDupBlockSizeLimit - The maximum allowed size for a block to be
/// duplicated during if-conversion.
unsigned IfCvtDupBlockSizeLimit;
/// StackPointerRegisterToSaveRestore - If set to a physical register, this
/// specifies the register that llvm.savestack/llvm.restorestack should save
/// and restore.