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ffcf3c8688
This introduces a new cgdata format for stable function maps. The raw data is embedded in the __llvm_merge section during compile time. This data can be read and merged using the llvm-cgdata tool, into an indexed cgdata file. Consequently, the tool is now capable of handling either outlined hash trees, stable function maps, or both, as they are orthogonal. Depends on #112662. This is a patch for https://discourse.llvm.org/t/rfc-global-function-merging/82608.
84 lines
2.9 KiB
Plaintext
84 lines
2.9 KiB
Plaintext
# REQUIRES: shell, aarch64-registered-target
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# UNSUPPORTED: system-windows
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# Merge a binary file (e.g., a linked executable) having concatenated cgdata (__llvm_outline)
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RUN: split-file %s %t
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# Synthesize two sets of raw cgdata without the header (32 byte) from the indexed cgdata.
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# Concatenate them in merge-concat.ll
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RUN: llvm-cgdata --convert --format binary %t/raw-1.cgtext -o %t/raw-1.cgdata
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RUN: od -t x1 -j 32 -An %t/raw-1.cgdata | tr -d '\n\r\t' | sed 's/[ ]*$//' | sed 's/[ ][ ]*/\\\\/g' > %t/raw-1-bytes.txt
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RUN: sed "s/<RAW_1_BYTES>/$(cat %t/raw-1-bytes.txt)/g" %t/merge-concat-template.ll > %t/merge-concat-template-2.ll
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RUN: llvm-cgdata --convert --format binary %t/raw-2.cgtext -o %t/raw-2.cgdata
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RUN: od -t x1 -j 32 -An %t/raw-2.cgdata | tr -d '\n\r\t' | sed 's/[ ]*$//' | sed 's/[ ][ ]*/\\\\/g' > %t/raw-2-bytes.txt
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RUN: sed "s/<RAW_2_BYTES>/$(cat %t/raw-2-bytes.txt)/g" %t/merge-concat-template-2.ll > %t/merge-concat.ll
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RUN: llc -filetype=obj -mtriple arm64-apple-darwin %t/merge-concat.ll -o %t/merge-concat.o
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RUN: llvm-cgdata --merge %t/merge-concat.o -o %t/merge-concat.cgdata
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RUN: llvm-cgdata --show %t/merge-concat.cgdata | FileCheck %s
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CHECK: Outlined hash tree:
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CHECK-NEXT: Total Node Count: 4
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CHECK-NEXT: Terminal Node Count: 2
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CHECK-NEXT: Depth: 2
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RUN: llvm-cgdata --convert %t/merge-concat.cgdata | FileCheck %s --check-prefix=TREE
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TREE: # Outlined stable hash tree
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TREE-NEXT: :outlined_hash_tree
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TREE-NEXT: ---
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TREE-NEXT: 0:
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TREE-NEXT: Hash: 0x0
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TREE-NEXT: Terminals: 0
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TREE-NEXT: SuccessorIds: [ 1 ]
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TREE-NEXT: 1:
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TREE-NEXT: Hash: 0x1
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TREE-NEXT: Terminals: 0
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TREE-NEXT: SuccessorIds: [ 2, 3 ]
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TREE-NEXT: 2:
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TREE-NEXT: Hash: 0x3
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TREE-NEXT: Terminals: 5
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TREE-NEXT: SuccessorIds: [ ]
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TREE-NEXT: 3:
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TREE-NEXT: Hash: 0x2
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TREE-NEXT: Terminals: 4
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TREE-NEXT: SuccessorIds: [ ]
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TREE-NEXT: ...
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;--- raw-1.cgtext
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:outlined_hash_tree
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0:
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Hash: 0x0
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Terminals: 0
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SuccessorIds: [ 1 ]
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1:
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Hash: 0x1
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Terminals: 0
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SuccessorIds: [ 2 ]
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2:
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Hash: 0x2
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Terminals: 4
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SuccessorIds: [ ]
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...
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;--- raw-2.cgtext
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:outlined_hash_tree
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0:
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Hash: 0x0
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Terminals: 0
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SuccessorIds: [ 1 ]
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1:
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Hash: 0x1
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Terminals: 0
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SuccessorIds: [ 2 ]
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2:
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Hash: 0x3
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Terminals: 5
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SuccessorIds: [ ]
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...
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;--- merge-concat-template.ll
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; In an linked executable (as opposed to an object file), cgdata in __llvm_outline might be concatenated. Although this is not a typical workflow, we simply support this case to parse cgdata that is concatenated. In other words, the following two trees are encoded back-to-back in a binary format.
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@.data1 = private unnamed_addr constant [72 x i8] c"<RAW_1_BYTES>", section "__DATA,__llvm_outline"
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@.data2 = private unnamed_addr constant [72 x i8] c"<RAW_2_BYTES>", section "__DATA,__llvm_outline"
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