## This script checks that YamlProfileReader in llvm-bolt is reading data
## correctly and stale data is corrected by profile inference.
REQUIRES: asserts
RUN: yaml2obj %p/Inputs/blarge.yaml &> %t.exe
RUN: llvm-bolt %t.exe -o %t.null --b %p/Inputs/blarge_profile_stale.yaml \
RUN: --infer-stale-profile=0 --profile-ignore-hash=1 --profile-use-dfs=0 \
RUN: 2>&1 | FileCheck %s -check-prefix=CHECK0
## Testing "usqrt"
RUN: llvm-bolt %t.exe -o %t.null --b %p/Inputs/blarge_profile_stale.yaml \
RUN: --print-cfg --print-only=usqrt --infer-stale-profile=1 \
RUN: --profile-ignore-hash=1 --profile-use-dfs=0 --debug-only=bolt-prof 2>&1 | FileCheck %s -check-prefix=CHECK1
## Testing "SolveCubic"
RUN: llvm-bolt %t.exe -o %t.null --b %p/Inputs/blarge_profile_stale.yaml \
RUN: --print-cfg --print-only=SolveCubic --infer-stale-profile=1 \
RUN: --profile-ignore-hash=1 --profile-use-dfs=0 --debug-only=bolt-prof 2>&1 | FileCheck %s -check-prefix=CHECK2
## Testing skipped function
RUN: llvm-bolt %t.exe -o %t.null --b %p/Inputs/blarge_profile_stale.yaml \
RUN: --print-cfg --print-only=usqrt --infer-stale-profile=1 --skip-funcs=usqrt \
RUN: --profile-ignore-hash=1 --profile-use-dfs=0
CHECK0: BOLT-INFO: 2 out of 7 functions in the binary (28.6%) have non-empty execution profile
CHECK0: BOLT-WARNING: 2 (100.0% of all profiled) functions have invalid (possibly stale) profile
CHECK0: BOLT-WARNING: 1192 out of 1192 samples in the binary (100.0%) belong to functions with invalid (possibly stale) profile
## Function "usqrt" has stale profile, since the number of blocks in the profile
## (nblocks=6) does not match the size of the CFG in the binary. The entry
## block (bid=0) has an incorrect (missing) count, which should be inferred by
## the algorithm.
## Verify inference details.
CHECK1: pre-processing profile using YAML profile reader
CHECK1: applying profile inference for "usqrt"
CHECK1: Matched yaml block (bid = 0) with hash 1111111111111111 to BB (index = 0) with hash 36007ba1d80c0000
CHECK1-NEXT: loose match
CHECK1: Matched yaml block (bid = 1) with hash d70d7a64320e0010 to BB (index = 1) with hash d70d7a64320e0010
CHECK1-NEXT: exact match
CHECK1: Matched yaml block (bid = 3) with hash 5c06705524800039 to BB (index = 3) with hash 5c06705524800039
CHECK1-NEXT: exact match
## Verify that yaml reader works as expected.
CHECK1: Binary Function "usqrt" after building cfg {
CHECK1: State : CFG constructed
CHECK1: Address : 0x401170
CHECK1: Size : 0x43
CHECK1: Section : .text
CHECK1: IsSimple : 1
CHECK1: BB Count : 5
CHECK1: Exec Count : 20
CHECK1: Branch Count: 640
CHECK1: }
## Verify block counts.
CHECK1: .LBB01 (4 instructions, align : 1)
CHECK1: Successors: .Ltmp[[#BB13:]] (mispreds: 0, count: 20)
CHECK1: .Ltmp[[#BB13:]] (9 instructions, align : 1)
CHECK1: Successors: .Ltmp[[#BB12:]] (mispreds: 0, count: 320), .LFT[[#BB0:]] (mispreds: 0, count: 0)
CHECK1: .LFT[[#BB0:]] (2 instructions, align : 1)
CHECK1: Successors: .Ltmp[[#BB12:]] (mispreds: 0, count: 0)
CHECK1: .Ltmp[[#BB12:]] (2 instructions, align : 1)
CHECK1: Successors: .Ltmp[[#BB13:]] (mispreds: 0, count: 300), .LFT[[#BB1:]] (mispreds: 0, count: 20)
CHECK1: .LFT[[#BB1:]] (2 instructions, align : 1)
## Check the overall inference stats.
CHECK1: 2 out of 7 functions in the binary (28.6%) have non-empty execution profile
CHECK1: BOLT-WARNING: 2 (100.0% of all profiled) functions have invalid (possibly stale) profile
CHECK1: BOLT-WARNING: 1192 out of 1192 samples in the binary (100.0%) belong to functions with invalid (possibly stale) profile
CHECK1: inferred profile for 2 (100.00% of profiled, 100.00% of stale) functions responsible for {{.*}} samples ({{.*}} out of {{.*}})
## Function "SolveCubic" has stale profile, since there is one jump in the
## profile (from bid=13 to bid=2) which is not in the CFG in the binary. The test
## verifies that the inference is able to match two blocks (bid=1 and bid=13)
## using "loose" hashes and then correctly propagate the counts.
## Verify inference details.
CHECK2: pre-processing profile using YAML profile reader
CHECK2: applying profile inference for "SolveCubic"
CHECK2: Matched yaml block (bid = 0) with hash 4600940a609c0000 to BB (index = 0) with hash 4600940a609c0000
CHECK2-NEXT: exact match
CHECK2: Matched yaml block (bid = 1) with hash 167a1f084f130088 to BB (index = 1) with hash 167a1f084f130088
CHECK2-NEXT: exact match
CHECK2: Matched yaml block (bid = 13) with hash a8d50000f81902a7 to BB (index = 13) with hash a8d5aa43f81902a7
CHECK2-NEXT: loose match
CHECK2: Matched yaml block (bid = 3) with hash c516000073dc00a0 to BB (index = 3) with hash c516b1c973dc00a0
CHECK2-NEXT: loose match
CHECK2: Matched yaml block (bid = 5) with hash 6446e1ea500111 to BB (index = 5) with hash 6446e1ea500111
CHECK2-NEXT: exact match
## Verify that yaml reader works as expected.
CHECK2: Binary Function "SolveCubic" after building cfg {
CHECK2: State : CFG constructed
CHECK2: Address : 0x400e00
CHECK2: Size : 0x368
CHECK2: Section : .text
CHECK2: IsSimple : 1
CHECK2: BB Count : 18
CHECK2: Exec Count : 151
CHECK2: Branch Count: 552
## Verify block counts.
CHECK2: .LBB00 (43 instructions, align : 1)
CHECK2: Successors: .Ltmp[[#BB7:]] (mispreds: 0, count: 0), .LFT[[#BB1:]] (mispreds: 0, count: 151)
CHECK2: .LFT[[#BB1:]] (5 instructions, align : 1)
CHECK2: Successors: .Ltmp[[#BB13:]] (mispreds: 0, count: 151), .LFT[[#BB2:]] (mispreds: 0, count: 0)
CHECK2: .Ltmp[[#BB3:]] (26 instructions, align : 1)
CHECK2: Successors: .Ltmp[[#BB5:]] (mispreds: 0, count: 151), .LFT[[#BB4:]] (mispreds: 0, count: 0)
CHECK2: .Ltmp[[#BB5:]] (9 instructions, align : 1)
CHECK2: .Ltmp[[#BB13:]] (12 instructions, align : 1)
CHECK2: Successors: .Ltmp[[#BB3:]] (mispreds: 0, count: 151)
CHECK2: 2 out of 7 functions in the binary (28.6%) have non-empty execution profile
Codebase Browser
llvm