derek.holloway
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70 lines
3.2 KiB
Plaintext
70 lines
3.2 KiB
Plaintext
# UNSUPPORTED: true
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## This script checks that YamlProfileReader in llvm-bolt is reading data
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## correctly and stale data is corrected by profile inference.
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RUN: yaml2obj %p/Inputs/blarge.yaml &> %t.exe
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RUN: llvm-bolt %t.exe -o %t.null -b %p/Inputs/blarge_profile_stale.std-hash.yaml \
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RUN: --print-cfg --print-only=usqrt,SolveCubic --infer-stale-profile=1 -v=1 \
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RUN: 2>&1 | FileCheck %s
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## Verify that yaml reader works as expected.
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CHECK: pre-processing profile using YAML profile reader
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CHECK: BOLT-INFO: YAML profile with hash: std::hash
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## Function "SolveCubic" has stale profile, since there is one jump in the
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## profile (from bid=13 to bid=2) which is not in the CFG in the binary. The test
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## verifies that the inference is able to match two blocks (bid=1 and bid=13)
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## using "loose" hashes and then correctly propagate the counts.
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CHECK: Binary Function "SolveCubic" after building cfg {
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CHECK: State : CFG constructed
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CHECK: Address : 0x400e00
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CHECK: Size : 0x368
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CHECK: Section : .text
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CHECK: IsSimple : 1
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CHECK: BB Count : 18
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CHECK: Exec Count : 151
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CHECK: Sample Count: 552
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CHECK: }
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## Verify block counts.
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CHECK: .LBB00 (43 instructions, align : 1)
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CHECK: Successors: .Ltmp[[#BB07:]] (mispreds: 0, count: 0), .LFT[[#BB01:]] (mispreds: 0, count: 151)
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CHECK: .LFT[[#BB01:]] (5 instructions, align : 1)
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CHECK: Successors: .Ltmp[[#BB013:]] (mispreds: 0, count: 151), .LFT[[#BB02:]] (mispreds: 0, count: 0)
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CHECK: .Ltmp[[#BB03:]] (26 instructions, align : 1)
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CHECK: Successors: .Ltmp[[#BB05:]] (mispreds: 0, count: 151), .LFT[[#BB04:]] (mispreds: 0, count: 0)
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CHECK: .Ltmp[[#BB05:]] (9 instructions, align : 1)
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CHECK: .Ltmp[[#BB013:]] (12 instructions, align : 1)
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CHECK: Successors: .Ltmp[[#BB03:]] (mispreds: 0, count: 151)
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CHECK: End of Function "SolveCubic"
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## Function "usqrt" has stale profile, since the number of blocks in the profile
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## (nblocks=6) does not match the size of the CFG in the binary. The entry
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## block (bid=0) has an incorrect (missing) count, which should be inferred by
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# #the algorithm.
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CHECK: Binary Function "usqrt" after building cfg {
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CHECK: State : CFG constructed
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CHECK: Address : 0x401170
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CHECK: Size : 0x43
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CHECK: Section : .text
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CHECK: IsSimple : 1
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CHECK: BB Count : 5
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CHECK: Exec Count : 20
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CHECK: Sample Count: 640
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CHECK: }
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## Verify block counts.
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CHECK: .LBB01 (4 instructions, align : 1)
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CHECK: Successors: .Ltmp[[#BB113:]] (mispreds: 0, count: 20)
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CHECK: .Ltmp[[#BB113:]] (9 instructions, align : 1)
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CHECK: Successors: .Ltmp[[#BB112:]] (mispreds: 0, count: 320), .LFT[[#BB10:]] (mispreds: 0, count: 0)
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CHECK: .LFT[[#BB10:]] (2 instructions, align : 1)
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CHECK: Successors: .Ltmp[[#BB112:]] (mispreds: 0, count: 0)
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CHECK: .Ltmp[[#BB112:]] (2 instructions, align : 1)
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CHECK: Successors: .Ltmp[[#BB113:]] (mispreds: 0, count: 300), .LFT[[#BB11:]] (mispreds: 0, count: 20)
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CHECK: .LFT[[#BB11:]] (2 instructions, align : 1)
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CHECK: End of Function "usqrt"
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## Check the overall inference stats.
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CHECK: 2 out of 7 functions in the binary (28.6%) have non-empty execution profile
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CHECK: inferred profile for 2 (100.00% of profiled, 100.00% of stale) functions responsible for {{.*}} samples ({{.*}} out of {{.*}})
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