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Bp update #422

Merged
merged 193 commits into from
Aug 29, 2024
Merged

Bp update #422

merged 193 commits into from
Aug 29, 2024

Commits on Jul 9, 2024

  1. Adding speculative global history, moving update to ROB, and replacin… 

    …g BTBHistory with FTQ
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  2. Getting rid of print statements used to track down missing branches

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  3. Changing how globalHistory is updated in the event of a mispredicton

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  4. Clang format etc.

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  5. Adding to documentation

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  6. Fixing global history bug in generic predictor

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  7. Fixing unit test failures resulting from changes to BP structure

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  8. Getting rid of redundant info in the FTQ

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  9. Clang Format

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  10. Adding new test for speculative global history updates

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  11. Addressing superficial comments on PR

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  12. Adding EXPECT_CALL for branch predictor in reorderBufferTest.cc

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  13. Moving branch statistic collectiong to Reorder buffer and updating te… 

    …sts accordingly
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  14. Removing BP stats from in-order core getstats

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  15. Moving branch prediction stat collection to fetch unit to better alig… 

    …n with branch metrics reported by PMU events in A64FX
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  16. Fixing typo

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  17. Clang format

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  18. Adding ftq description in the BP docs

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  19. Attending to Generic Predictor comments

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  20. Docs typo fixed

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  21. Adding buffer check comment

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  22. Fixing typo

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  23. Updating comment re shifting the address to get the hashed index

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  24. Adding comment re multiplying global history length by two

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  25. Renaming getBranchExecutedCount to getBranchFetchedCount

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  26. Adding globalHistoryMask_ variable to genericPredictor

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  27. Adding more detail to virtual flush and update functions re order of … 

    …calls
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  28. reversing order of purge flush from decodeUnit

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  29. Moving buffer branch flush functionality from core.cc to PipelineBuff… 

    …er.hh
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  30. rebase

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  31. Adding comments explaining more basically the nature of the global hi… 

    …story
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  32. replacing top/bottom with front/back in the docs when referring to a … 

    …queue
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  33. Replacing left-most with most-significant

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  34. Replacing left-most with most-significant

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  35. Moving BP files to new directory

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  36. Moving AlwaysNotTakenPredictor files to BP directory

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  37. clangformat and undoing some unintended taken -> isTaken

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  38. rebase

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  39. rebase

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  40. Updating BP tests for consistency with new predict() arguments

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  41. Updating docs

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  42. Updating comments

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  43. rebase

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  44. clang format

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  45. adding flush asserts

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  46. Responding to PR comments

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  47. Responding to PR comments

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  48. Moving words around

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  49. Moving words around

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  50. Moving words around

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  51. Correcting definition of 'misprediction', and updating tests accordingly

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  52. undoing last push

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  53. Finessing update logic re target adresses

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  54. Updating predict() comment in BranchPredictor.hh

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  55. Updating predict() comment in BranchPredictor.hh

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  56. Updating haeders and comments

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  57. Fixing indentation in CMakeLists.txt

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  58. Updating metric language in Core.cc

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  59. Updating variable name in Core class

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  60. Adding assert to branch predictors to confirm that they are being upd… 

    …ated in program order
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  61. Adding test and clang formatting

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  62. rebase

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  63. Adding better comments to speculativeGlobalHistory tests in generic a… 

    …nd perceptrons predictor tests
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  64. Clang format

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  65. Changing use of prediction in loopbuffer

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  66. replacing = with ==

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  67. Typo fix

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  68. rebase

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  69. Hiding variables that are unused in Release behind ifndef clause

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  70. Adding to branch predictor docs

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  71. Changing nomenclature

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  72. Adding to branch predictor lastUpdatedInstructionId_ comment

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  73. Adding comment re unused predict() call in the fetch unit

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  74. Moving lasyUpdatedInstructionId_ to BranchPredictor.hh

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  75. clang format

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  76. Adding more detail to idndef comment in BranchPredictor.hh

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  77. Updating comments in FetchUnit.cc

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  78. U[dating expected simulated cycles

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  79. Adding to BP documentation

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  80. Adding to comments to address PR comments

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Commits on Jul 16, 2024

  1. Adjusting comment explaining ifdef in BranchPredictor.hh

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  2. Updating comment regarding maybe_unused attribute in FetchUnit.cc

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  3. Getting rid of superfluous assert in FetchUnit.cc -- the BP works reg… 

    …ardless of the prediction being the same as the loop buffers recycled prediction
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  4. Making further changes to comments

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  5. Shortening comments

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Commits on Jul 18, 2024

  1. Adding branches retired statistic, and specifying how it is calculate… 

    …d in the docs
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  2. clang format

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Commits on Jul 23, 2024

  1. Updating output metrics

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Commits on Aug 2, 2024

  1. Adding speculative global history, moving update to ROB, and replacin… 

    …g BTBHistory with FTQ
    @ABenC377
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  2. Getting rid of print statements used to track down missing branches

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  3. Changing how globalHistory is updated in the event of a mispredicton

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  4. Clang format etc.

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  5. Adding to documentation

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  6. Fixing global history bug in generic predictor

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  7. Fixing unit test failures resulting from changes to BP structure

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  8. Getting rid of redundant info in the FTQ

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  9. Clang Format

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  10. Adding new test for speculative global history updates

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  11. Addressing superficial comments on PR

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  12. Adding EXPECT_CALL for branch predictor in reorderBufferTest.cc

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  13. Moving branch statistic collectiong to Reorder buffer and updating te… 

    …sts accordingly
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  14. Removing BP stats from in-order core getstats

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  15. Moving branch prediction stat collection to fetch unit to better alig… 

    …n with branch metrics reported by PMU events in A64FX
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  16. Fixing typo

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  17. Clang format

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  18. Adding ftq description in the BP docs

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  19. Attending to Generic Predictor comments

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  20. Docs typo fixed

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  21. Adding buffer check comment

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  22. Fixing typo

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  23. Updating comment re shifting the address to get the hashed index

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  24. Adding comment re multiplying global history length by two

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  25. Renaming getBranchExecutedCount to getBranchFetchedCount

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  26. Adding globalHistoryMask_ variable to genericPredictor

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  27. Adding more detail to virtual flush and update functions re order of … 

    …calls
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  28. reversing order of purge flush from decodeUnit

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  29. Moving buffer branch flush functionality from core.cc to PipelineBuff… 

    …er.hh
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  30. Rebasing

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  31. Adding comments explaining more basically the nature of the global hi… 

    …story
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  32. replacing top/bottom with front/back in the docs when referring to a … 

    …queue
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  33. Replacing left-most with most-significant

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  34. Replacing left-most with most-significant

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  35. Moving BP files to new directory

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  36. Moving AlwaysNotTakenPredictor files to BP directory

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  37. clangformat and undoing some unintended taken -> isTaken

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  38. rebase

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  39. rebase

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  40. Updating BP tests for consistency with new predict() arguments

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  41. Updating docs

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  42. Updating comments

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  43. rebase

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  44. clang format

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  45. adding flush asserts

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  46. Responding to PR comments

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  47. Responding to PR comments

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  48. Moving words around

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  49. Moving words around

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  50. Moving words around

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  51. Rebasing

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  52. undoing last push

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  53. Finessing update logic re target adresses

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  54. Updating predict() comment in BranchPredictor.hh

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  55. Updating predict() comment in BranchPredictor.hh

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  56. Updating haeders and comments

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  57. Fixing indentation in CMakeLists.txt

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  58. Updating metric language in Core.cc

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  59. Updating variable name in Core class

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  60. Adding assert to branch predictors to confirm that they are being upd… 

    …ated in program order
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  61. Adding test and clang formatting

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  62. rebase

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  63. Adding better comments to speculativeGlobalHistory tests in generic a… 

    …nd perceptrons predictor tests
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  64. Clang format

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  65. Changing use of prediction in loopbuffer

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  66. replacing = with ==

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  67. Typo fix

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  68. rebase

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  69. Hiding variables that are unused in Release behind ifndef clause

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  70. Adding to branch predictor docs

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  71. Changing nomenclature

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  72. Adding to branch predictor lastUpdatedInstructionId_ comment

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  73. Adding comment re unused predict() call in the fetch unit

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  74. Moving lasyUpdatedInstructionId_ to BranchPredictor.hh

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  75. clang format

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  76. Adding more detail to idndef comment in BranchPredictor.hh

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  77. Updating comments in FetchUnit.cc

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  78. Adding to BP documentation

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  79. Adding to comments to address PR comments

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  80. Adjusting comment explaining ifdef in BranchPredictor.hh

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  81. Updating comment regarding maybe_unused attribute in FetchUnit.cc

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  82. Getting rid of superfluous assert in FetchUnit.cc -- the BP works reg… 

    …ardless of the prediction being the same as the loop buffers recycled prediction
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  83. Making further changes to comments

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  84. Shortening comments

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  85. Adding branches retired statistic, and specifying how it is calculate… 

    …d in the docs
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  86. clang format

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  87. Rebasing

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  88. Rebasing

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  89. Merge remote-tracking branch 'origin/BP_update' into BP_update 

    # Conflicts:
#	.jenkins/build_test_run.sh
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  90. Changing CI check test to differentiate instructions retired and bran… 

    …ches retired
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  91. Changing CI check test to differentiate instructions retired and bran… 

    …ches retired
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  92. Changing expected number of simulated cycles

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Commits on Aug 9, 2024

  1. Updating buffer flush logic

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Commits on Aug 12, 2024

  1. Attending to comments on PR

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Commits on Aug 14, 2024

  1. Making predict a wrapper function

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Commits on Aug 22, 2024

  1. Getting rid of default argument

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  2. Getting rid of default argument

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  3. Going to ull when shifting

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  4. Going to ull when shifting

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  5. Merge remote-tracking branch 'origin/BP_update' into BP_update

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  6. Adding comments

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  7. Updating comments

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Commits on Aug 23, 2024

  1. Addressing Jack's comments

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  2. Replacing pointers with references

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  3. Clang format

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