bolt/test/runtime/meta-merge-fdata.test

# Meta test using merge-fdata binary
UNSUPPORTED: asan
# Instrumentation currently only works on X86
REQUIRES: x86_64-linux

# Instrumentation, should test:
# - Direct branches
# - Unmapped calls coming from uninstrumented code (libc)
# - Direct calls
RUN: llvm-bolt merge-fdata -o %t.inst --instrument \
RUN:   --instrumentation-file=%t.fdata

# Execute with no input
RUN: %t.inst --version
RUN: mv %t.fdata %t.fdata1

# Check unmapped calls coverage - libc should be calling _start via
# uninstrumented code
RUN: cat %t.fdata1 | FileCheck %s --check-prefix=CHECK-FDATA
CHECK-FDATA: 0 [unknown] 0 1 _start 0 0 1

# Check that BOLT works with this profile
RUN: llvm-bolt merge-fdata -o %t.bolt --data %t.fdata1 \
RUN:   --reorder-blocks=ext-tsp --reorder-functions=hfsort+ \
RUN:   --split-functions \
RUN:   | FileCheck %s --check-prefix=CHECK-BOLT1
CHECK-BOLT1-NOT: invalid (possibly stale) profile

# Execute again
RUN: %t.inst --help
RUN: mv %t.fdata %t.fdata2

# Check profile coverage
RUN: llvm-boltdiff merge-fdata merge-fdata \
RUN:   --data %t.fdata1 --data2 %t.fdata2 --display-count=20 | \
RUN:   FileCheck %s --check-prefix=CHECK-BOLTDIFF
CHECK-BOLTDIFF: Inputs share [[#]] functions

# Check that instrumented binary produces the same result
RUN: merge-fdata %t.fdata1 %t.fdata2 > %t.fdata.base
RUN: %t.inst %t.fdata1 %t.fdata2 > %t.fdata.inst
RUN: cmp %t.fdata.base %t.fdata.inst

# Optimize using merged fdata
RUN: llvm-bolt merge-fdata -o %t.opt --data %t.fdata.base \
RUN:   --reorder-blocks=ext-tsp --reorder-functions=hfsort+ \
RUN:   --split-functions \
RUN:   | FileCheck %s --check-prefix=CHECK-BOLT2
CHECK-BOLT2-NOT: invalid (possibly stale) profile

# Check that optimized binary produces the same result
RUN: %t.opt %t.fdata1 %t.fdata2 > %t.fdata.opt
RUN: cmp %t.fdata.base %t.fdata.opt