bolt/test/X86/shrinkwrapping.test

# Verifies that llvm-bolt updates CFI correctly after
# shrink-wrapping when optimizing a function without
# frame pointers.

# This test has commands that rely on shell capabilities that won't execute
# correctly on Windows e.g. subshell execution to capture command output.
REQUIRES: shell

RUN: %clangxx %cxxflags -no-pie %S/Inputs/exc4sw.S -o %t.exe -Wl,-q
RUN: llvm-bolt %t.exe -o %t --relocs --frame-opt=all \
RUN:   --data=%p/Inputs/exc4sw.fdata --reorder-blocks=cache 2>&1 | \
RUN:   FileCheck %s --check-prefix=CHECK-BOLT

RUN: llvm-objdump --dwarf=frames %t.exe | grep -A20 -e \
RUN:   `llvm-nm --numeric-sort %t.exe | grep main | tail -n 1 | \
RUN:    cut -f1 -d' ' | tail -c9` 2>&1 | FileCheck %s --check-prefix=CHECK-INPUT

RUN: llvm-objdump --dwarf=frames %t | grep -A20 -e \
RUN:   `llvm-nm --numeric-sort %t | grep main | tail -n 1 | cut -f1 -d' ' | \
RUN:    tail -c9` 2>&1 | FileCheck %s --check-prefix=CHECK-OUTPUT

CHECK-BOLT: Shrink wrapping moved 2 spills inserting load/stores and 0 spills inserting push/pops

CHECK-INPUT:  DW_CFA_advance_loc: 2
CHECK-INPUT-NEXT:  DW_CFA_def_cfa_offset: +16
CHECK-INPUT-NEXT:  DW_CFA_offset: reg13 -16
CHECK-INPUT-NEXT:  DW_CFA_advance_loc: 2
CHECK-INPUT-NEXT:  DW_CFA_def_cfa_offset: +24
CHECK-INPUT-NEXT:  DW_CFA_offset: reg12 -24
CHECK-INPUT-NEXT:  DW_CFA_advance_loc: 1
CHECK-INPUT-NEXT:  DW_CFA_def_cfa_offset: +32
CHECK-INPUT-NEXT:  DW_CFA_offset: reg6 -32
CHECK-INPUT-NEXT:  DW_CFA_advance_loc: 6
CHECK-INPUT-NEXT:  DW_CFA_def_cfa_offset: +40
CHECK-INPUT-NEXT:  DW_CFA_offset: reg3 -40
CHECK-INPUT-NEXT:  DW_CFA_advance_loc: 6
CHECK-INPUT-NEXT:  DW_CFA_def_cfa_offset: +48

CHECK-OUTPUT:  DW_CFA_advance_loc: 4
CHECK-OUTPUT-NEXT:  DW_CFA_def_cfa_offset: +16
CHECK-OUTPUT-NEXT:  DW_CFA_def_cfa_offset: +24
CHECK-OUTPUT-NEXT:  DW_CFA_advance_loc: 1
CHECK-OUTPUT-NEXT:  DW_CFA_def_cfa_offset: +32
CHECK-OUTPUT-NEXT:  DW_CFA_offset: reg6 -32
CHECK-OUTPUT-NEXT:  DW_CFA_advance_loc: 6
CHECK-OUTPUT-NEXT:  DW_CFA_def_cfa_offset: +40
CHECK-OUTPUT-NEXT:  DW_CFA_offset: reg3 -40
CHECK-OUTPUT-NEXT:  DW_CFA_advance_loc: 6
CHECK-OUTPUT-NEXT:  DW_CFA_def_cfa_offset: +48