| # Test that landing pads at fragment entries are not omitted during unwinding. |
| # This uses profile2 splitting with a fake fdata, so SplitFunctions splits main |
| # right before landing pad. |
| |
| # RUN: llvm-mc --filetype=obj --triple x86_64-unknown-unknown %s -o %t.o |
| # RUN: link_fdata %s %t.o %t.fdata |
| # RUN: llvm-strip --strip-unneeded %t.o |
| # RUN: %clang++ %cflags %t.o -o %t.exe -Wl,-q |
| # RUN: llvm-bolt %t.exe -o %t.bolt --split-functions --data=%t.fdata \ |
| # RUN: --print-split --print-only=main --split-eh --split-all-cold \ |
| # RUN: 2>&1 | FileCheck --check-prefix=BOLT-CHECK %s |
| # RUN: %t.bolt | FileCheck --check-prefix=RUN-CHECK %s |
| |
| # BOLT-CHECK: ------- HOT-COLD SPLIT POINT ------- |
| # BOLT-CHECK-EMPTY: |
| # BOLT-CHECK-NEXT: .LLP1 |
| |
| # RUN-CHECK: failed successfully |
| |
| |
| .text |
| .file "lp-fragment-start.cpp" |
| .globl main # -- Begin function main |
| .p2align 4, 0x90 |
| .type main,@function |
| main: # @main |
| .Lfunc_begin0: |
| .cfi_startproc |
| .cfi_personality 155, DW.ref.__gxx_personality_v0 |
| .cfi_lsda 27, .Lexception0 |
| pushq %r15 |
| .cfi_def_cfa_offset 16 |
| pushq %r14 |
| .cfi_def_cfa_offset 24 |
| pushq %rbx |
| .cfi_def_cfa_offset 32 |
| .cfi_offset %rbx, -32 |
| .cfi_offset %r14, -24 |
| .cfi_offset %r15, -16 |
| movl $16, %edi |
| LL_fdata0: |
| callq __cxa_allocate_exception@PLT |
| # FDATA: 1 main #LL_fdata0# 1 __cxa_allocate_exception@PLT 0 0 1 |
| movq %rax, %rbx |
| .Ltmp0: |
| leaq .L.str(%rip), %rsi |
| movq %rax, %rdi |
| callq _ZNSt13runtime_errorC1EPKc@PLT |
| jmp .Ltmp3 |
| .Ltmp1: |
| # Cause split here, so .Ltmp5 is the first block of the fragment |
| .Ltmp5: # LP for .Ltmp3 to .Ltmp4 |
| movq %rdx, %r15 |
| movq %rax, %r14 |
| jmp .LBB0_4 |
| .Ltmp3: # throw std::runtime_error |
| movq _ZTISt13runtime_error@GOTPCREL(%rip), %rsi |
| movq _ZNSt13runtime_errorD1Ev@GOTPCREL(%rip), %rdx |
| movq %rbx, %rdi |
| callq __cxa_throw@PLT # LP: .Ltmp5 |
| .Ltmp4: |
| .Ltmp2: |
| movq %rdx, %r15 |
| movq %rax, %r14 |
| movq %rbx, %rdi |
| callq __cxa_free_exception@PLT |
| .LBB0_4: |
| movq %r14, %rdi |
| cmpl $1, %r15d |
| jne .LBB0_5 |
| callq __cxa_begin_catch@PLT |
| movq (%rax), %rcx |
| movq %rax, %rdi |
| callq *16(%rcx) |
| movq %rax, %rdi |
| callq puts@PLT |
| callq __cxa_end_catch@PLT |
| xorl %eax, %eax |
| popq %rbx |
| .cfi_def_cfa_offset 24 |
| popq %r14 |
| .cfi_def_cfa_offset 16 |
| popq %r15 |
| .cfi_def_cfa_offset 8 |
| retq |
| .LBB0_5: |
| .cfi_def_cfa_offset 32 |
| callq _Unwind_Resume@PLT |
| .Lfunc_end0: |
| .size main, .Lfunc_end0-main |
| .cfi_endproc |
| .section .gcc_except_table,"a",@progbits |
| .p2align 2 |
| GCC_except_table0: |
| .Lexception0: |
| .byte 255 # @LPStart Encoding = omit |
| .byte 155 # @TType Encoding = indirect pcrel sdata4 |
| .uleb128 .Lttbase0-.Lttbaseref0 |
| .Lttbaseref0: |
| .byte 1 # Call site Encoding = uleb128 |
| .uleb128 .Lcst_end0-.Lcst_begin0 |
| .Lcst_begin0: |
| .uleb128 .Lfunc_begin0-.Lfunc_begin0 # >> Call Site 1 << |
| .uleb128 .Ltmp0-.Lfunc_begin0 # Call between .Lfunc_begin0 and .Ltmp0 |
| .byte 0 # has no landing pad |
| .byte 0 # On action: cleanup |
| .uleb128 .Ltmp0-.Lfunc_begin0 # >> Call Site 2 << |
| .uleb128 .Ltmp1-.Ltmp0 # Call between .Ltmp0 and .Ltmp1 |
| .uleb128 .Ltmp2-.Lfunc_begin0 # jumps to .Ltmp2 |
| .byte 3 # On action: 2 |
| .uleb128 .Ltmp3-.Lfunc_begin0 # >> Call Site 3 << |
| .uleb128 .Ltmp4-.Ltmp3 # Call between .Ltmp3 and .Ltmp4 |
| .uleb128 .Ltmp5-.Lfunc_begin0 # jumps to .Ltmp5 |
| .byte 5 # On action: 3 |
| .uleb128 .Ltmp4-.Lfunc_begin0 # >> Call Site 4 << |
| .uleb128 .Lfunc_end0-.Ltmp4 # Call between .Ltmp4 and .Lfunc_end0 |
| .byte 0 # has no landing pad |
| .byte 0 # On action: cleanup |
| .Lcst_end0: |
| .byte 0 # >> Action Record 1 << |
| .byte 0 # No further actions |
| .byte 1 # >> Action Record 2 << |
| .byte 125 # Continue to action 1 |
| .byte 1 # >> Action Record 3 << |
| .byte 0 # No further actions |
| .p2align 2 |
| .Ltmp6: # TypeInfo 1 |
| .long .L_ZTISt13runtime_error.DW.stub-.Ltmp6 |
| .Lttbase0: |
| .p2align 2 |
| .type .L.str,@object # @.str |
| .section .rodata.str1.1,"aMS",@progbits,1 |
| .L.str: |
| .asciz "failed successfully" |
| .size .L.str, 20 |
| |
| .data |
| .p2align 3 |
| .L_ZTISt13runtime_error.DW.stub: |
| .quad _ZTISt13runtime_error |
| .hidden DW.ref.__gxx_personality_v0 |
| .weak DW.ref.__gxx_personality_v0 |
| .section .data.DW.ref.__gxx_personality_v0,"aGw",@progbits,DW.ref.__gxx_personality_v0,comdat |
| .p2align 3 |
| .type DW.ref.__gxx_personality_v0,@object |
| .size DW.ref.__gxx_personality_v0, 8 |
| DW.ref.__gxx_personality_v0: |
| .quad __gxx_personality_v0 |
| .ident "clang version 14.0.0 (https://github.com/llvm/llvm-project.git 329fda39c507e8740978d10458451dcdb21563be)" |
| .section ".note.GNU-stack","",@progbits |
| .addrsig |
| .addrsig_sym __gxx_personality_v0 |
| .addrsig_sym _Unwind_Resume |
| .addrsig_sym _ZTISt13runtime_error |
| |
| |
| # #include <cstdio> |
| # #include <stdexcept> |
| # |
| # int main() { |
| # try { |
| # throw std::runtime_error("failed successfully"); |
| # } catch (const std::runtime_error &e) { |
| # puts(e.what()); |
| # } |
| # return 0; |
| # } |
