fda24dbc16
## Change: * Added `--dump-dot-func` command-line option that allows users to dump CFGs only for specific functions instead of dumping all functions (the current only available option being `--dump-dot-all`) ## Usage: * Users can now specify function names or regex patterns (e.g., `--dump-dot-func=main,helper` or `--dump-dot-func="init.*`") to generate .dot files only for functions of interest * Aims to save time when analysing specific functions in large binaries (e.g., only dumping graphs for performance-critical functions identified through profiling) and we can now avoid reduce output clutter from generating thousands of unnecessary .dot files when analysing large binaries ## Testing The introduced test `dump-dot-func.test` confirms the new option does the following: - [x] 1. `dump-dot-func` can correctly filter a specified functions - [x] 2. Can achieve the above with regexes - [x] 3. Can do 1. with a list of functions - [x] No option specified creates no dot files - [x] Passing in a non-existent function generates no dumping messages - [x] `dump-dot-all` continues to work as expected
52 lines
2.5 KiB
Plaintext
52 lines
2.5 KiB
Plaintext
# Test the --dump-dot-func option with multiple functions
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# (includes tests for both mangled/unmangled names)
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RUN: %clang++ %p/Inputs/multi-func.cpp -o %t.exe -Wl,-q
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# Test 1: --dump-dot-func with specific function name (mangled)
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RUN: llvm-bolt %t.exe -o %t.bolt1 --dump-dot-func=_Z3addii -v=1 2>&1 | FileCheck %s --check-prefix=ADD
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# Test 2: --dump-dot-func with regex pattern (main.*)
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RUN: llvm-bolt %t.exe -o %t.bolt2 --dump-dot-func="main.*" -v=1 2>&1 | FileCheck %s --check-prefix=MAIN-REGEX
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# Test 3: --dump-dot-func with multiple specific functions (mangled names)
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RUN: llvm-bolt %t.exe -o %t.bolt3 --dump-dot-func=_Z3addii,_Z8multiplyii -v=1 2>&1 | FileCheck %s --check-prefix=MULTI
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# Test 4: No option specified should create no dot files
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RUN: llvm-bolt %t.exe -o %t.bolt4 2>&1 | FileCheck %s --check-prefix=NONE
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# Test 5: --dump-dot-func with non-existent function
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RUN: llvm-bolt %t.exe -o %t.bolt5 --dump-dot-func=nonexistent -v=1 2>&1 | FileCheck %s --check-prefix=NONEXISTENT
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# Test 6: Backward compatibility - --dump-dot-all should still work
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RUN: llvm-bolt %t.exe -o %t.bolt6 --dump-dot-all -v=1 2>&1 | FileCheck %s --check-prefix=ALL
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# Test 7: Test with unmangled function name (main function)
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RUN: llvm-bolt %t.exe -o %t.bolt7 --dump-dot-func=main -v=1 2>&1 | FileCheck %s --check-prefix=MAIN-UNMANGLED
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# Check that specific functions are dumped
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ADD: BOLT-INFO: dumping CFG to _Z3addii-00_build-cfg.dot
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ADD-NOT: BOLT-INFO: dumping CFG to main-00_build-cfg.dot
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ADD-NOT: BOLT-INFO: dumping CFG to _Z8multiplyii-00_build-cfg.dot
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ADD-NOT: BOLT-INFO: dumping CFG to _Z11main_helperv-00_build-cfg.dot
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MAIN-REGEX-DAG: BOLT-INFO: dumping CFG to main-00_build-cfg.dot
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MAIN-REGEX-NOT: BOLT-INFO: dumping CFG to _Z3addii-00_build-cfg.dot
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MAIN-REGEX-NOT: BOLT-INFO: dumping CFG to _Z8multiplyii-00_build-cfg.dot
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MULTI-DAG: BOLT-INFO: dumping CFG to _Z3addii-00_build-cfg.dot
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MULTI-DAG: BOLT-INFO: dumping CFG to _Z8multiplyii-00_build-cfg.dot
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MULTI-NOT: BOLT-INFO: dumping CFG to main-00_build-cfg.dot
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MULTI-NOT: BOLT-INFO: dumping CFG to _Z11main_helperv-00_build-cfg.dot
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# Should be no dumping messages when no option is specified
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NONE-NOT: BOLT-INFO: dumping CFG
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# Should be no dumping messages for non-existent function
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NONEXISTENT-NOT: BOLT-INFO: dumping CFG
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ALL: BOLT-INFO: dumping CFG to main-00_build-cfg.dot
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MAIN-UNMANGLED: BOLT-INFO: dumping CFG to main-00_build-cfg.dot
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MAIN-UNMANGLED-NOT: BOLT-INFO: dumping CFG to _Z3addii-00_build-cfg.dot
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MAIN-UNMANGLED-NOT: BOLT-INFO: dumping CFG to _Z8multiplyii-00_build-cfg.dot |