e341e9f094
For test purposes, we want to split functions at a random split point to be able to test different layouts without relying on the profile. This patch introduces an option, that randomly chooses a split point to partition blocks of a function into hot and cold regions. Reviewed By: Amir, yota9 Differential Revision: https://reviews.llvm.org/D128773
46 lines
1.0 KiB
ArmAsm
46 lines
1.0 KiB
ArmAsm
# Test random function splitting option
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# RUN: llvm-mc --filetype=obj --triple x86_64-unknown-unknown %s -o %t.o
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# RUN: %clang %cflags %t.o -o %t.exe
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# RUN: llvm-bolt %t.exe -o %t.out --split-functions --split-random \
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# RUN: --print-finalized --print-only=two_block --bolt-seed=7 2>&1 | \
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# RUN: FileCheck %s
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# CHECK: Binary Function "two_block"
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# CHECK: IsSplit :
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# CHECK-SAME: {{ 1$}}
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.text
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.globl single_block
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.type single_block, @function
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single_block:
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ret
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.size single_block, .-single_block
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.globl two_block
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.type two_block, @function
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two_block:
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.L3:
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subl $1, %edi
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testl %edi, %edi
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jg .L3
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jmp .L4
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.L4:
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subl $1, %edi
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subl $1, %edi
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subl $1, %edi
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subl $1, %edi
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ret
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.size two_block, .-two_block
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.globl main
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.type main, @function
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main:
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call single_block
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movl $10, %edi
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call two_block
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ret
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.size main, .-main
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