[llvm-shlib] Fix the version naming style of libLLVM for Windows (#85710)
[llvm-project.git] / bolt / test / X86 / shrinkwrapping-pop-order.s
blob2a5db3685e526918b3ee7715fcbdaee8bf99a4b4
1 # This test reproduces a POP reordering issue in shrink wrapping where we would
2 # incorrectly put a store after a load (instead of before) when having multiple
3 # insertions at the same point. Check that the order is correct in this test.
5 # REQUIRES: system-linux
7 # RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %s -o %t.o
8 # RUN: link_fdata %s %t.o %t.fdata
9 # RUN: llvm-strip --strip-unneeded %t.o
10 # RUN: %clang %cflags %t.o -o %t.exe -Wl,-q -nostdlib
11 # RUN: llvm-bolt %t.exe -o %t.out --data %t.fdata --frame-opt=all --lite=0 \
12 # RUN: --print-fop 2>&1 | FileCheck %s
14 .globl _start
15 _start:
16 .cfi_startproc
17 # FDATA: 0 [unknown] 0 1 _start 0 0 6
18 je a
19 b: jne _start
20 # FDATA: 1 _start #b# 1 _start #c# 0 3
23 push %rbx
24 push %rbp
25 pop %rbp
26 pop %rbx
28 # This basic block is treated as having 0 execution count.
29 # push and pop will be sinked into this block.
31 ud2
32 .cfi_endproc
35 # Check shrink wrapping results:
36 # CHECK: BOLT-INFO: Shrink wrapping moved 0 spills inserting load/stores and 2 spills inserting push/pops
37 # CHECK: BOLT-INFO: Shrink wrapping reduced 6 store executions (28.6% total instructions executed, 100.0% store instructions)
38 # CHECK: BOLT-INFO: Shrink wrapping failed at reducing 0 store executions (0.0% total instructions executed, 0.0% store instructions)
40 # Check that order is correct
41 # CHECK: Binary Function "_start" after frame-optimizer
42 # Pushes are ordered according to their reg number and come first
43 # CHECK: pushq %rbp
44 # CHECK: pushq %rbx
45 # Pops are ordered according to their dominance relation and come last
46 # CHECK: popq %rbx
47 # CHECK: popq %rbp