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author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-03-04 00:58:40 +0000 |
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committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-03-04 00:58:40 +0000 |
commit | 40a42a2ccaaa19a109667ed7abf224cc8733cd9c (patch) | |
tree | bd0d560f032bf3734a16548983876f12367d3793 /lib/CodeGen/SpillPlacement.h | |
parent | 13ba2dab631636e525a44bb259aaea56a860d1c7 (diff) | |
download | llvm-40a42a2ccaaa19a109667ed7abf224cc8733cd9c.tar.gz llvm-40a42a2ccaaa19a109667ed7abf224cc8733cd9c.tar.bz2 llvm-40a42a2ccaaa19a109667ed7abf224cc8733cd9c.tar.xz |
Precompute block frequencies, pow() isn't free.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126975 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SpillPlacement.h')
-rw-r--r-- | lib/CodeGen/SpillPlacement.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/lib/CodeGen/SpillPlacement.h b/lib/CodeGen/SpillPlacement.h index ef2d516cdc..b0135cbc36 100644 --- a/lib/CodeGen/SpillPlacement.h +++ b/lib/CodeGen/SpillPlacement.h @@ -27,6 +27,7 @@ #ifndef LLVM_CODEGEN_SPILLPLACEMENT_H #define LLVM_CODEGEN_SPILLPLACEMENT_H +#include "llvm/ADT/SmallVector.h" #include "llvm/CodeGen/MachineFunctionPass.h" namespace llvm { @@ -35,7 +36,6 @@ class BitVector; class EdgeBundles; class MachineBasicBlock; class MachineLoopInfo; -template <typename> class SmallVectorImpl; class SpillPlacement : public MachineFunctionPass { struct Node; @@ -48,6 +48,9 @@ class SpillPlacement : public MachineFunctionPass { // caller. BitVector *ActiveNodes; + // Block frequencies are computed once. Indexed by block number. + SmallVector<float, 4> BlockFrequency; + public: static char ID; // Pass identification, replacement for typeid. @@ -91,7 +94,9 @@ public: /// getBlockFrequency - Return the estimated block execution frequency per /// function invocation. - float getBlockFrequency(const MachineBasicBlock*); + float getBlockFrequency(unsigned Number) const { + return BlockFrequency[Number]; + } private: virtual bool runOnMachineFunction(MachineFunction&); |