derek.holloway
7502bf64a4
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157 lines
5.3 KiB
ArmAsm
157 lines
5.3 KiB
ArmAsm
## Check that --function-order can be combined with
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## --reorder-functions algorithms to pin specific functions first
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## while remaining functions are ordered by the selected algorithm.
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# REQUIRES: system-linux
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# RUN: llvm-mc -filetype=obj -triple aarch64-unknown-unknown %s -o %t.o
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# RUN: link_fdata %s %t.o %t.fdata
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# RUN: %clang %cflags --target=aarch64-unknown-linux %t.o -o %t.exe -Wl,-q
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## Create order file pinning func_b first, then func_a.
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# RUN: echo "func_b" > %t.order
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# RUN: echo "func_a" >> %t.order
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## Test 1: Hybrid exec-count + order file.
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## Order-file functions come first (func_b, func_a), then remaining sorted by
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## execution count descending (func_c=100, func_d=50).
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# RUN: llvm-bolt %t.exe --data %t.fdata --reorder-functions=exec-count \
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# RUN: --function-order=%t.order --generate-function-order=%t.genorder1 \
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# RUN: -o %t.null 2>&1 | FileCheck %s --check-prefix=CHECK-HYBRID
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# RUN: FileCheck %s --input-file %t.genorder1 --check-prefix=CHECK-HYBRID-ORDER
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# CHECK-HYBRID: BOLT-INFO: hybrid mode: functions from
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# CHECK-HYBRID-SAME: order file will be pinned first,
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# CHECK-HYBRID-SAME: remaining functions ordered by exec-count
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# CHECK-HYBRID: BOLT-INFO: 2 functions pinned by order file
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# CHECK-HYBRID-ORDER: func_b
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# CHECK-HYBRID-ORDER-NEXT: func_a
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# CHECK-HYBRID-ORDER-NEXT: func_c
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# CHECK-HYBRID-ORDER-NEXT: func_d
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## Test 2: Standalone order file (no --reorder-functions).
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## Should auto-default to --reorder-functions=user.
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## Order-file functions come first, then remaining in original address order
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## (func_d before func_c in the binary).
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# RUN: llvm-bolt %t.exe --data %t.fdata \
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# RUN: --function-order=%t.order --generate-function-order=%t.genorder2 \
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# RUN: -o %t.null 2>&1 | FileCheck %s --check-prefix=CHECK-STANDALONE
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# RUN: FileCheck %s --input-file %t.genorder2 \
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# RUN: --check-prefix=CHECK-STANDALONE-ORDER
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# CHECK-STANDALONE: BOLT-INFO: --function-order specified
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# CHECK-STANDALONE-SAME: without --reorder-functions,
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# CHECK-STANDALONE-SAME: defaulting to --reorder-functions=user
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# CHECK-STANDALONE: BOLT-INFO: 2 functions pinned by order file
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# CHECK-STANDALONE-ORDER: func_b
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# CHECK-STANDALONE-ORDER-NEXT: func_a
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# CHECK-STANDALONE-ORDER-NEXT: func_d
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# CHECK-STANDALONE-ORDER-NEXT: func_c
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## Test 3: User mode + order file. Same result as none + order file since
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## RT_USER delegates entirely to the order file.
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# RUN: llvm-bolt %t.exe --data %t.fdata --reorder-functions=user \
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# RUN: --function-order=%t.order --generate-function-order=%t.genorder3 \
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# RUN: -o %t.null 2>&1 | FileCheck %s --check-prefix=CHECK-USER
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# RUN: FileCheck %s --input-file %t.genorder3 --check-prefix=CHECK-USER-ORDER
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# CHECK-USER: BOLT-INFO: 2 functions pinned by order file
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# CHECK-USER-ORDER: func_b
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# CHECK-USER-ORDER-NEXT: func_a
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# CHECK-USER-ORDER-NEXT: func_d
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# CHECK-USER-ORDER-NEXT: func_c
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## Test 4: Explicit --reorder-functions=none + order file.
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## Should warn and reset to --reorder-functions=user.
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# RUN: llvm-bolt %t.exe --data %t.fdata --reorder-functions=none \
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# RUN: --function-order=%t.order --generate-function-order=%t.genorder4 \
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# RUN: -o %t.null 2>&1 | FileCheck %s --check-prefix=CHECK-RESET
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# RUN: FileCheck %s --input-file %t.genorder4 --check-prefix=CHECK-RESET-ORDER
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# CHECK-RESET: BOLT-WARNING: --reorder-functions=none
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# CHECK-RESET-SAME: is incompatible with --function-order,
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# CHECK-RESET-SAME: resetting to --reorder-functions=user
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# CHECK-RESET: BOLT-INFO: 2 functions pinned by order file
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# CHECK-RESET-ORDER: func_b
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# CHECK-RESET-ORDER-NEXT: func_a
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# CHECK-RESET-ORDER-NEXT: func_d
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# CHECK-RESET-ORDER-NEXT: func_c
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## Test 5: Order file with a missing function.
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## The nonexistent function is skipped with a warning, valid functions are still
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## pinned correctly.
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# RUN: echo "func_b" > %t.order_missing
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# RUN: echo "nonexist" >> %t.order_missing
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# RUN: echo "func_a" >> %t.order_missing
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# RUN: llvm-bolt %t.exe --data %t.fdata --reorder-functions=exec-count \
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# RUN: --function-order=%t.order_missing \
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# RUN: --generate-function-order=%t.genorder5 -v=1 \
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# RUN: -o %t.null 2>&1 | FileCheck %s --check-prefix=CHECK-MISS
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# RUN: FileCheck %s --input-file %t.genorder5 \
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# RUN: --check-prefix=CHECK-MISS-ORDER
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# CHECK-MISS-DAG: can't find function for nonexist
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# CHECK-MISS-DAG: can't find functions for 1 entries
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# CHECK-MISS-DAG: 2 functions pinned by order file
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# CHECK-MISS-ORDER: func_b
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# CHECK-MISS-ORDER-NEXT: func_a
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# CHECK-MISS-ORDER-NEXT: func_c
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# CHECK-MISS-ORDER-NEXT: func_d
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.text
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.align 4
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.globl main
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.type main, %function
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main:
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.cfi_startproc
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bl func_a
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ret
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.cfi_endproc
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.size main, .-main
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.globl func_a
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.type func_a, %function
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func_a:
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# FDATA: 0 [unknown] 0 1 func_a 0 0 10
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.cfi_startproc
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ret
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.cfi_endproc
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.size func_a, .-func_a
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.globl func_b
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.type func_b, %function
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func_b:
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# FDATA: 0 [unknown] 0 1 func_b 0 0 5
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.cfi_startproc
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ret
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.cfi_endproc
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.size func_b, .-func_b
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## func_d is placed before func_c in the assembly to distinguish address-order
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## results (func_d, func_c) from exec-count results (func_c, func_d).
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.globl func_d
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.type func_d, %function
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func_d:
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# FDATA: 0 [unknown] 0 1 func_d 0 0 50
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.cfi_startproc
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ret
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.cfi_endproc
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.size func_d, .-func_d
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.globl func_c
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.type func_c, %function
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func_c:
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# FDATA: 0 [unknown] 0 1 func_c 0 0 100
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.cfi_startproc
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ret
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.cfi_endproc
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.size func_c, .-func_c
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## Force relocation mode.
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.reloc 0, R_AARCH64_NONE
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