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NULLSTONE Performance Results GNU GCC 2.7.2 NULLSTONE SUMMARY PERFORMANCE REPORT Nullstone Release 3.8.8 Compiler GCC 2.7.2 Architecture DEC Alpha Model 3000/300 Compiler Options /usr/local/gcc-2.7.2/bin/gcc -O2 -funroll-loops -I. %D main.o %{%T } -L. -lnull -lm -o stone Optimization Sample Size Compile Time Nullstone Rate Nullstone Ratio Alias Optimization (by type) 102 5 515737 53% Alias Optimization (const-qualified) 11 4 935813 58% Alias Optimization (by address) 52 7 451864 38% Bitfield Optimization 3 1 2228305 52% Branch Elimination 15 1 28778990 99% Instruction Combining 2510 5 1953434 60% Constant Folding 56 2 15102390 52% Constant Propagation 15 1 4113257 49% CSE Elimination 2600 29 120540 41% Dead Code Elimination 306 1 5806428 42% Integer Divide Optimization 92 2 1869212 96% Expression Simplification 181 1 9534173 82% If Optimization 69 1 3591498 63% Function Inlining 39 1 2295457 27% Induction Variable Elimination 4 2 7419 39% Strength Reduction 2 1 80988 49% Hoisting 38 1 96621 49% Loop Unrolling 13 1 1987628 43% Loop Collapsing 3 1 97091 71% Loop Fusion 2 1 19420 33% Unswitching 2 1 143161 51% Block Merging 1 2 961271 73% Cross Jumping 4 4 756631 61% Integer Modulus Optimization 92 2 1709160 84% Integer Multiply Optimization 99 1 2533516 95% Address Optimization 26 3 989407 77% Pointer Optimization 15 1 1563451 52% Printf Optimization 3 1 3918 46% Forward Store 3 2 119242 84% Value Range Optimization 30 2 235150 4% Tail Recursion 4 1 10552 60% Register Allocation 47 4 11907 85% Narrowing 3 3 4704924 16% Static Declarations 1 1 67169 22% String Optimization 4 1 4131813 83% Overall Totals 6447 2 2786501 56% GCC 2.7.2 Performance Improvement Report Performance Increased by 10% or More Compared to GCC 2.6.3 NULLSTONE SUMMARY PERFORMANCE IMPROVEMENT REPORT Nullstone Release 3.8.8 Threshold: Nullstone Rate Increased by at least 10% Baseline Compiler Comparison Compiler Compiler GCC 2.6.3 GCC 2.7.2 Architecture DEC Alpha DEC Alpha Model 3000/300 3000/300 Compiler Options /usr/local/gcc-2.6.3/bin/gcc -O2 -funroll-loops -I. %D main.o %{%T } -L. -lnull -lm -o stone /usr/local/gcc-2.7.2/bin/gcc -O2 -funroll-loops -I. %D main.o %{%T } -L. -lnull -lm -o stone Optimization Sample Size Improvements Alias Optimization (by type) 102 tests 0 tests Alias Optimization (const-qualified) 11 tests 11 tests Alias Optimization (by address) 52 tests 0 tests Bitfield Optimization 3 tests 1 tests Branch Elimination 15 tests 0 tests Instruction Combining 2510 tests 135 tests Constant Folding 56 tests 2 tests Constant Propagation 15 tests 0 tests CSE Elimination 2600 tests 131 tests Dead Code Elimination 306 tests 6 tests Integer Divide Optimization 92 tests 0 tests Expression Simplification 181 tests 4 tests If Optimization 69 tests 0 tests Function Inlining 39 tests 0 tests Induction Variable Elimination 4 tests 0 tests Strength Reduction 2 tests 0 tests Hoisting 38 tests 5 tests Loop Unrolling 13 tests 1 tests Loop Collapsing 3 tests 0 tests Loop Fusion 2 tests 0 tests Unswitching 2 tests 0 tests Block Merging 1 tests 0 tests Cross Jumping 4 tests 0 tests Integer Modulus Optimization 92 tests 0 tests Integer Multiply Optimization 99 tests 0 tests Address Optimization 26 tests 0 tests Pointer Optimization 15 tests 0 tests Printf Optimization 3 tests 1 tests Forward Store 3 tests 0 tests Value Range Optimization 30 tests 0 tests Tail Recursion 4 tests 0 tests Register Allocation 47 tests 4 tests Narrowing 3 tests 0 tests Static Declarations 1 tests 1 tests String Optimization 4 tests 1 tests Total Performance Improvements >= 10% 6447 tests 303 tests GCC 2.7.2 Performance Regression Report Performance Decreased by 10% or More Compared to GCC 2.6.3 NULLSTONE SUMMARY PERFORMANCE REGRESSION REPORT Nullstone Release 3.8.8 Threshold: Nullstone Rate Decreased by at least 10% Baseline Compiler Comparison Compiler Compiler GCC 2.6.3 GCC 2.7.2 Architecture DEC Alpha DEC Alpha Model 3000/300 3000/300 Compiler Options /usr/local/gcc-2.6.3/bin/gcc -O2 -funroll-loops -I. %D main.o %{%T } -L. -lnull -lm -o stone /usr/local/gcc-2.7.2/bin/gcc -O2 -funroll-loops -I. %D main.o %{%T } -L. -lnull -lm -o stone Optimization Sample Size Regressions Alias Optimization (by type) 102 tests 6 tests Alias Optimization (const-qualified) 11 tests 0 tests Alias Optimization (by address) 52 tests 0 tests Bitfield Optimization 3 tests 0 tests Branch Elimination 15 tests 0 tests Instruction Combining 2510 tests 72 tests Constant Folding 56 tests 4 tests Constant Propagation 15 tests 0 tests CSE Elimination 2600 tests 250 tests Dead Code Elimination 306 tests 6 tests Integer Divide Optimization 92 tests 0 tests Expression Simplification 181 tests 3 tests If Optimization 69 tests 0 tests Function Inlining 39 tests 4 tests Induction Variable Elimination 4 tests 0 tests Strength Reduction 2 tests 0 tests Hoisting 38 tests 3 tests Loop Unrolling 13 tests 0 tests Loop Collapsing 3 tests 0 tests Loop Fusion 2 tests 0 tests Unswitching 2 tests 0 tests Block Merging 1 tests 0 tests Cross Jumping 4 tests 0 tests Integer Modulus Optimization 92 tests 0 tests Integer Multiply Optimization 99 tests 0 tests Address Optimization 26 tests 2 tests Pointer Optimization 15 tests 0 tests Printf Optimization 3 tests 1 tests Forward Store 3 tests 0 tests Value Range Optimization 30 tests 0 tests Tail Recursion 4 tests 0 tests Register Allocation 47 tests 1 tests Narrowing 3 tests 3 tests Static Declarations 1 tests 0 tests String Optimization 4 tests 0 tests Total Performance Regressions >= 10% 6447 tests 355 tests GCC 2.7.2 Performance Improvement Report Performance Increased by 50% or More Compared to GCC 2.6.3 NULLSTONE SUMMARY PERFORMANCE IMPROVEMENT REPORT Nullstone Release 3.8.8 Threshold: Nullstone Rate Increased by at least 50% Baseline Compiler Comparison Compiler Compiler GCC 2.6.3 GCC 2.7.2 Architecture DEC Alpha DEC Alpha Model 3000/300 3000/300 Compiler Options /usr/local/gcc-2.6.3/bin/gcc -O2 -funroll-loops -I. %D main.o %{%T } -L. -lnull -lm -o stone /usr/local/gcc-2.7.2/bin/gcc -O2 -funroll-loops -I. %D main.o %{%T } -L. -lnull -lm -o stone Optimization Sample Size Improvements Alias Optimization (by type) 102 tests 0 tests Alias Optimization (const-qualified) 11 tests 7 tests Alias Optimization (by address) 52 tests 0 tests Bitfield Optimization 3 tests 0 tests Branch Elimination 15 tests 0 tests Instruction Combining 2510 tests 56 tests Constant Folding 56 tests 1 tests Constant Propagation 15 tests 0 tests CSE Elimination 2600 tests 30 tests Dead Code Elimination 306 tests 1 tests Integer Divide Optimization 92 tests 0 tests Expression Simplification 181 tests 0 tests If Optimization 69 tests 0 tests Function Inlining 39 tests 0 tests Induction Variable Elimination 4 tests 0 tests Strength Reduction 2 tests 0 tests Hoisting 38 tests 0 tests Loop Unrolling 13 tests 0 tests Loop Collapsing 3 tests 0 tests Loop Fusion 2 tests 0 tests Unswitching 2 tests 0 tests Block Merging 1 tests 0 tests Cross Jumping 4 tests 0 tests Integer Modulus Optimization 92 tests 0 tests Integer Multiply Optimization 99 tests 0 tests Address Optimization 26 tests 0 tests Pointer Optimization 15 tests 0 tests Printf Optimization 3 tests 0 tests Forward Store 3 tests 0 tests Value Range Optimization 30 tests 0 tests Tail Recursion 4 tests 0 tests Register Allocation 47 tests 0 tests Narrowing 3 tests 0 tests Static Declarations 1 tests 0 tests String Optimization 4 tests 0 tests Total Performance Improvements >= 50% 6447 tests 95 tests GCC 2.7.2 Performance Regression Report Performance Increased by 50% or More Compared to GCC 2.6.3 NULLSTONE SUMMARY PERFORMANCE REGRESSION REPORT Nullstone Release 3.8.8 Threshold: Nullstone Rate Decreased by at least 50% Baseline Compiler Comparison Compiler Compiler GCC 2.6.3 GCC 2.7.2 Architecture DEC Alpha DEC Alpha Model 3000/300 3000/300 Compiler Options /usr/local/gcc-2.6.3/bin/gcc -O2 -funroll-loops -I. %D main.o %{%T } -L. -lnull -lm -o stone /usr/local/gcc-2.7.2/bin/gcc -O2 -funroll-loops -I. %D main.o %{%T } -L. -lnull -lm -o stone Optimization Sample Size Regressions Alias Optimization (by type) 102 tests 0 tests Alias Optimization (const-qualified) 11 tests 0 tests Alias Optimization (by address) 52 tests 0 tests Bitfield Optimization 3 tests 0 tests Branch Elimination 15 tests 0 tests Instruction Combining 2510 tests 24 tests Constant Folding 56 tests 4 tests Constant Propagation 15 tests 0 tests CSE Elimination 2600 tests 130 tests Dead Code Elimination 306 tests 0 tests Integer Divide Optimization 92 tests 0 tests Expression Simplification 181 tests 0 tests If Optimization 69 tests 0 tests Function Inlining 39 tests 0 tests Induction Variable Elimination 4 tests 0 tests Strength Reduction 2 tests 0 tests Hoisting 38 tests 1 tests Loop Unrolling 13 tests 0 tests Loop Collapsing 3 tests 0 tests Loop Fusion 2 tests 0 tests Unswitching 2 tests 0 tests Block Merging 1 tests 0 tests Cross Jumping 4 tests 0 tests Integer Modulus Optimization 92 tests 0 tests Integer Multiply Optimization 99 tests 0 tests Address Optimization 26 tests 0 tests Pointer Optimization 15 tests 0 tests Printf Optimization 3 tests 0 tests Forward Store 3 tests 0 tests Value Range Optimization 30 tests 0 tests Tail Recursion 4 tests 0 tests Register Allocation 47 tests 0 tests Narrowing 3 tests 1 tests Static Declarations 1 tests 0 tests String Optimization 4 tests 0 tests Total Performance Regressions >= 50% 6447 tests 160 tests © 1990-2002 Nullstone Corporation. 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