Some basic tests for supplementing instrumentation profile with sample profile.

Test all of goo's counters will be set to -1.
RUN: llvm-profdata merge \
RUN:     -supplement-instr-with-sample=%p/Inputs/mix_sample.proftext \
RUN:     -suppl-min-size-threshold=0 %p/Inputs/mix_instr.proftext -o %t
RUN: llvm-profdata show %t -all-functions -counts | FileCheck %s --check-prefix=MIX1

MIX1: foo:
MIX1-NEXT: Hash: 0x0000000000000007
MIX1-NEXT: Counters: 5
MIX1-NEXT: Block counts: [12, 13, 0, 0, 0]
MIX1: goo:
MIX1-NEXT: Hash: 0x0000000000000005
MIX1-NEXT: Counters: 3
MIX1-NEXT: Block counts: [18446744073709551615, 18446744073709551615, 18446744073709551615]
MIX1: moo:
MIX1-NEXT: Hash: 0x0000000000000009
MIX1-NEXT: Counters: 4
MIX1-NEXT: Block counts: [3000, 1000, 2000, 500]

Test when the zero counter ratio of foo is higher than zero-counter-threshold.
RUN: llvm-profdata merge \
RUN:     -supplement-instr-with-sample=%p/Inputs/mix_sample.proftext \
RUN:     -suppl-min-size-threshold=0 -zero-counter-threshold=0.5 \
RUN:     -instr-prof-cold-threshold=30 %p/Inputs/mix_instr.proftext -o %t
RUN: llvm-profdata show %t -all-functions -counts | FileCheck %s --check-prefix=MIX2

MIX2: foo:
MIX2-NEXT: Hash: 0x0000000000000007
MIX2-NEXT: Counters: 5
MIX2-NEXT: Block counts: [18446744073709551615, 18446744073709551615, 18446744073709551615, 18446744073709551615, 18446744073709551615]
MIX2: goo:
MIX2-NEXT: Hash: 0x0000000000000005
MIX2-NEXT: Counters: 3
MIX2-NEXT: Block counts: [18446744073709551615, 18446744073709551615, 18446744073709551615]
MIX2: moo:
MIX2-NEXT: Hash: 0x0000000000000009
MIX2-NEXT: Counters: 4
MIX2-NEXT: Block counts: [3000, 1000, 2000, 500]

Test when the zero counter ratio of foo is lower than zero-counter-threshold.
RUN: llvm-profdata merge \
RUN:     -supplement-instr-with-sample=%p/Inputs/mix_sample.proftext \
RUN:     -suppl-min-size-threshold=0 -zero-counter-threshold=0.7 \
RUN:     -instr-prof-cold-threshold=30 %p/Inputs/mix_instr.proftext -o %t
RUN: llvm-profdata show %t -all-functions -counts | FileCheck %s --check-prefix=MIX3

MIX3: foo:
MIX3-NEXT: Hash: 0x0000000000000007
MIX3-NEXT: Counters: 5
MIX3-NEXT: Block counts: [1384, 1500, 0, 0, 0]
MIX3: goo:
MIX3-NEXT: Hash: 0x0000000000000005
MIX3-NEXT: Counters: 3
MIX3-NEXT: Block counts: [18446744073709551615, 18446744073709551615, 18446744073709551615]
MIX3: moo:
MIX3-NEXT: Hash: 0x0000000000000009
MIX3-NEXT: Counters: 4
MIX3-NEXT: Block counts: [3000, 1000, 2000, 500]

Test foo's profile won't be adjusted because its size is smaller
than suppl-min-size-threshold.
RUN: llvm-profdata merge \
RUN:     -supplement-instr-with-sample=%p/Inputs/mix_sample.proftext \
RUN:     -suppl-min-size-threshold=2 -zero-counter-threshold=0.7 \
RUN:     -instr-prof-cold-threshold=30 %p/Inputs/mix_instr.proftext -o %t
RUN: llvm-profdata show %t -all-functions -counts | FileCheck %s --check-prefix=MIX4

MIX4: foo:
MIX4-NEXT: Hash: 0x0000000000000007
MIX4-NEXT: Counters: 5
MIX4-NEXT: Block counts: [12, 13, 0, 0, 0]
MIX4: goo:
MIX4-NEXT: Hash: 0x0000000000000005
MIX4-NEXT: Counters: 3
MIX4-NEXT: Block counts: [18446744073709551615, 18446744073709551615, 18446744073709551615]
MIX4: moo:
MIX4-NEXT: Hash: 0x0000000000000009
MIX4-NEXT: Counters: 4
MIX4-NEXT: Block counts: [3000, 1000, 2000, 500]

Test profile summary won't be affected by -1 counter.
RUN: llvm-profdata merge \
RUN:     -supplement-instr-with-sample=%p/Inputs/mix_sample.proftext \
RUN:     -suppl-min-size-threshold=0 %p/Inputs/mix_instr.proftext -o %t
RUN: llvm-profdata show %t -detailed-summary | FileCheck %s --check-prefix=MIX5

MIX5: Instrumentation level: IR
MIX5-NEXT: Total functions: 3
MIX5-NEXT: Maximum function count: 3000
MIX5-NEXT: Maximum internal block count: 2000
MIX5-NEXT: Total number of blocks: 9
MIX5-NEXT: Total count: 6525
MIX5-NEXT: Detailed summary:
MIX5-NEXT: 3 blocks with count >= 1000 account for 80 percentage of the total counts.
MIX5-NEXT: 3 blocks with count >= 1000 account for 90 percentage of the total counts.
MIX5-NEXT: 4 blocks with count >= 500 account for 95 percentage of the total counts.
MIX5-NEXT: 4 blocks with count >= 500 account for 99 percentage of the total counts.
MIX5-NEXT: 6 blocks with count >= 12 account for 99.9 percentage of the total counts.
MIX5-NEXT: 6 blocks with count >= 12 account for 99.99 percentage of the total counts.
MIX5-NEXT: 6 blocks with count >= 12 account for 99.999 percentage of the total counts.