llvm-project/lld/test/MachO/compact-unwind-stack-ind.s

55 lines
1.4 KiB
ArmAsm

# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin19.0.0 %s -o %t.o
# RUN: %lld -arch x86_64 -dylib %t.o -o %t.dylib
# RUN: llvm-objdump --macho --syms --unwind-info %t.dylib | FileCheck %s
## Both _f and _g have the same compact unwind encoding,
## but different stack sizes. So their compact unwindings
## can't be merged.
# CHECK: SYMBOL TABLE:
# CHECK: [[#%x,F:]] g F __TEXT,__text _f
# CHECK: [[#%x,G:]] g F __TEXT,__text _g
# CHECK: Number of common encodings in array: 0x1
# CHECK: Common encodings: (count = 1)
# CHECK: encoding[0]: 0x03032000
# CHECK: Second level indices:
# CHECK: Second level index[0]:
# CHECK: [0]: function offset=0x[[#%.8x,F]], encoding[0]=0x03032000
# CHECK: [1]: function offset=0x[[#%.8x,G]], encoding[0]=0x03032000
## Based on compiling
## int f() {
## char alloca[3260] = { 0 };
## return alloca[0];
## }
##
## int g() {
## char alloca[2560] = { 0 };
## return alloca[0];
## }
## with `-fomit-frame-pointer -fno-stack-protector -S`.
.section __TEXT,__text,regular,pure_instructions
.build_version macos, 10, 15 sdk_version 10, 15, 6
.globl _f
.p2align 4, 0x90
_f:
.cfi_startproc
subq $3272, %rsp
.cfi_def_cfa_offset 3280
addq $3272, %rsp
retq
.cfi_endproc
.globl _g
.p2align 4, 0x90
_g:
.cfi_startproc
subq $2568, %rsp
.cfi_def_cfa_offset 2576
addq $2568, %rsp
retq
.cfi_endproc
.subsections_via_symbols