| ## Verify that the compact unwind entries for two functions with identical |
| ## unwind information and LSDA aren't folded together; see the comment in |
| ## UnwindInfoSectionImpl::finalize for why. |
| |
| # REQUIRES: x86 |
| # RUN: rm -rf %t; mkdir %t |
| # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-macos11.0 -emit-compact-unwind-non-canonical=true -o %t/lsda.o %s |
| # RUN: %lld -dylib --icf=all -lSystem -lc++ -o %t/liblsda.dylib %t/lsda.o |
| # RUN: llvm-objdump --macho --syms --unwind-info %t/liblsda.dylib | FileCheck %s |
| |
| ## Check that f and g have the same unwind encoding and LSDA offset (we need to |
| ## link with ICF above in order to get the LSDA deduplicated), and that their |
| ## compact unwind entries aren't folded. |
| |
| # CHECK-LABEL: SYMBOL TABLE: |
| # CHECK: [[#%x,G_ADDR:]] {{.*}} __Z1gv |
| # CHECK: [[#%x,H_ADDR:]] {{.*}} __Z1hv |
| |
| # CHECK-LABEL: Contents of __unwind_info section: |
| # CHECK: LSDA descriptors |
| # CHECK-NEXT: [0]: function offset=[[#%#.8x,G_ADDR]], LSDA offset=[[#%#x,LSDA:]] |
| # CHECK-NEXT: [1]: function offset=[[#%#.8x,H_ADDR]], LSDA offset=[[#%#.8x,LSDA]] |
| # CHECK-NEXT: Second level indices: |
| # CHECK: [1]: function offset=[[#%#.8x,G_ADDR]], encoding[0]=[[#%#x,ENCODING:]] |
| # CHECK: [2]: function offset=[[#%#.8x,H_ADDR]], encoding[0]=[[#%#.8x,ENCODING]] |
| |
| ## Generated from the following C++ code built with: |
| ## clang -target x86_64-apple-macosx11.0 -S -Os -fno-inline -fomit-frame-pointer |
| ## void f(int i) { throw i; } |
| ## void g() { try { f(1); } catch (int) {} } |
| ## void h() { try { f(2); } catch (int) {} } |
| |
| .section __TEXT,__text,regular,pure_instructions |
| .globl __Z1fi ## -- Begin function _Z1fi |
| __Z1fi: ## @_Z1fi |
| .cfi_startproc |
| pushq %rbx |
| .cfi_def_cfa_offset 16 |
| .cfi_offset %rbx, -16 |
| movl %edi, %ebx |
| movl $4, %edi |
| callq ___cxa_allocate_exception |
| movl %ebx, (%rax) |
| movq __ZTIi@GOTPCREL(%rip), %rsi |
| movq %rax, %rdi |
| xorl %edx, %edx |
| callq ___cxa_throw |
| .cfi_endproc |
| ## -- End function |
| .globl __Z1gv ## -- Begin function _Z1gv |
| __Z1gv: ## @_Z1gv |
| Lfunc_begin0: |
| .cfi_startproc |
| .cfi_personality 155, ___gxx_personality_v0 |
| .cfi_lsda 16, Lexception0 |
| pushq %rax |
| .cfi_def_cfa_offset 16 |
| Ltmp0: |
| movl $1, %edi |
| callq __Z1fi |
| Ltmp1: |
| ud2 |
| LBB1_2: ## %lpad |
| Ltmp2: |
| movq %rax, %rdi |
| callq ___cxa_begin_catch |
| popq %rax |
| jmp ___cxa_end_catch ## TAILCALL |
| Lfunc_end0: |
| .cfi_endproc |
| .section __TEXT,__gcc_except_tab |
| .p2align 2, 0x0 |
| GCC_except_table1: |
| 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 Ltmp0-Lfunc_begin0 ## >> Call Site 1 << |
| .uleb128 Ltmp1-Ltmp0 ## Call between Ltmp0 and Ltmp1 |
| .uleb128 Ltmp2-Lfunc_begin0 ## jumps to Ltmp2 |
| .byte 1 ## On action: 1 |
| .uleb128 Ltmp1-Lfunc_begin0 ## >> Call Site 2 << |
| .uleb128 Lfunc_end0-Ltmp1 ## Call between Ltmp1 and Lfunc_end0 |
| .byte 0 ## has no landing pad |
| .byte 0 ## On action: cleanup |
| Lcst_end0: |
| .byte 1 ## >> Action Record 1 << |
| ## Catch TypeInfo 1 |
| .byte 0 ## No further actions |
| .p2align 2, 0x0 |
| ## >> Catch TypeInfos << |
| .long __ZTIi@GOTPCREL+4 ## TypeInfo 1 |
| Lttbase0: |
| .p2align 2, 0x0 |
| ## -- End function |
| .section __TEXT,__text,regular,pure_instructions |
| .globl __Z1hv ## -- Begin function _Z1hv |
| __Z1hv: ## @_Z1hv |
| Lfunc_begin1: |
| .cfi_startproc |
| .cfi_personality 155, ___gxx_personality_v0 |
| .cfi_lsda 16, Lexception1 |
| pushq %rax |
| .cfi_def_cfa_offset 16 |
| Ltmp3: |
| movl $2, %edi |
| callq __Z1fi |
| Ltmp4: |
| ud2 |
| LBB2_2: ## %lpad |
| Ltmp5: |
| movq %rax, %rdi |
| callq ___cxa_begin_catch |
| popq %rax |
| jmp ___cxa_end_catch ## TAILCALL |
| Lfunc_end1: |
| .cfi_endproc |
| .section __TEXT,__gcc_except_tab |
| .p2align 2, 0x0 |
| GCC_except_table2: |
| Lexception1: |
| .byte 255 ## @LPStart Encoding = omit |
| .byte 155 ## @TType Encoding = indirect pcrel sdata4 |
| .uleb128 Lttbase1-Lttbaseref1 |
| Lttbaseref1: |
| .byte 1 ## Call site Encoding = uleb128 |
| .uleb128 Lcst_end1-Lcst_begin1 |
| Lcst_begin1: |
| .uleb128 Ltmp3-Lfunc_begin1 ## >> Call Site 1 << |
| .uleb128 Ltmp4-Ltmp3 ## Call between Ltmp3 and Ltmp4 |
| .uleb128 Ltmp5-Lfunc_begin1 ## jumps to Ltmp5 |
| .byte 1 ## On action: 1 |
| .uleb128 Ltmp4-Lfunc_begin1 ## >> Call Site 2 << |
| .uleb128 Lfunc_end1-Ltmp4 ## Call between Ltmp4 and Lfunc_end1 |
| .byte 0 ## has no landing pad |
| .byte 0 ## On action: cleanup |
| Lcst_end1: |
| .byte 1 ## >> Action Record 1 << |
| ## Catch TypeInfo 1 |
| .byte 0 ## No further actions |
| .p2align 2, 0x0 |
| ## >> Catch TypeInfos << |
| .long __ZTIi@GOTPCREL+4 ## TypeInfo 1 |
| Lttbase1: |
| .p2align 2, 0x0 |
| ## -- End function |
| .subsections_via_symbols |
