| ## Ensures that a call continuation fallthrough count is set when using |
| ## pre-aggregated perf data. |
| |
| # RUN: %clang %cflags -fpic -shared -xc /dev/null -o %t.so |
| ## Link against a DSO to ensure PLT entries. |
| # RUN: %clangxx %cxxflags %s %t.so -o %t -Wl,-q -nostdlib |
| # RUN: link_fdata %s %t %t.pa1 PREAGG1 |
| # RUN: link_fdata %s %t %t.pa2 PREAGG2 |
| # RUN: link_fdata %s %t %t.pa3 PREAGG3 |
| # RUN: link_fdata %s %t %t.pat PREAGGT1 |
| # RUN: link_fdata %s %t %t.pat2 PREAGGT2 |
| # RUN: link_fdata %s %t %t.patplt PREAGGPLT |
| |
| ## Check normal case: fallthrough is not LP or secondary entry. |
| # RUN: llvm-strip --strip-unneeded %t -o %t.strip |
| # RUN: llvm-objcopy --remove-section=.eh_frame %t.strip %t.noeh |
| # RUN: llvm-bolt %t.strip --pa -p %t.pa1 -o %t.out \ |
| # RUN: --print-cfg --print-only=main | FileCheck %s |
| |
| ## Check that getFallthroughsInTrace correctly handles a trace starting at plt |
| ## call continuation |
| # RUN: llvm-bolt %t.strip --pa -p %t.pa2 -o %t.out2 \ |
| # RUN: --print-cfg --print-only=main | FileCheck %s --check-prefix=CHECK2 |
| |
| ## Check that we don't treat secondary entry points as call continuation sites. |
| # RUN: llvm-bolt %t --pa -p %t.pa3 -o %t.out \ |
| # RUN: --print-cfg --print-only=main | FileCheck %s --check-prefix=CHECK3 |
| |
| ## Check fallthrough to a landing pad case. |
| # RUN: llvm-bolt %t.strip --pa -p %t.pa3 -o %t.out \ |
| # RUN: --print-cfg --print-only=main | FileCheck %s --check-prefix=CHECK3 |
| |
| ## Check pre-aggregated traces attach call continuation fallthrough count |
| # RUN: llvm-bolt %t.noeh --pa -p %t.pat -o %t.out \ |
| # RUN: --print-cfg --print-only=main | FileCheck %s |
| |
| ## Check pre-aggregated traces don't attach call continuation fallthrough count |
| ## to secondary entry point (unstripped) |
| # RUN: llvm-bolt %t --pa -p %t.pat2 -o %t.out \ |
| # RUN: --print-cfg --print-only=main | FileCheck %s --check-prefix=CHECK3 |
| ## Check pre-aggregated traces don't attach call continuation fallthrough count |
| ## to landing pad (stripped, LP) |
| # RUN: llvm-bolt %t.strip --pa -p %t.pat2 -o %t.out \ |
| # RUN: --print-cfg --print-only=main | FileCheck %s --check-prefix=CHECK3 |
| |
| ## Check pre-aggregated traces don't report zero-sized PLT fall-through as |
| ## invalid trace |
| # RUN: llvm-bolt %t.strip --pa -p %t.patplt -o %t.out | FileCheck %s \ |
| # RUN: --check-prefix=CHECK-PLT |
| # CHECK-PLT: traces mismatching disassembled function contents: 0 |
| |
| .globl foo |
| .type foo, %function |
| foo: |
| pushq %rbp |
| movq %rsp, %rbp |
| popq %rbp |
| Lfoo_ret: |
| retq |
| .size foo, .-foo |
| |
| .globl main |
| .type main, %function |
| main: |
| .Lfunc_begin0: |
| .cfi_startproc |
| .cfi_personality 155, DW.ref.__gxx_personality_v0 |
| .cfi_lsda 27, .Lexception0 |
| pushq %rbp |
| movq %rsp, %rbp |
| subq $0x20, %rsp |
| movl $0x0, -0x4(%rbp) |
| movl %edi, -0x8(%rbp) |
| movq %rsi, -0x10(%rbp) |
| Ltmp0_br: |
| callq puts@PLT |
| ## Check PLT traces are accepted |
| # PREAGGPLT: T #Ltmp0_br# #puts@plt# #puts@plt# 3 |
| ## Target is an external-origin call continuation |
| # PREAGG1: B X:0 #Ltmp1# 2 0 |
| # PREAGGT1: T X:0 #Ltmp1# #Ltmp4_br# 2 |
| # CHECK: callq puts@PLT |
| # CHECK-NEXT: count: 2 |
| |
| Ltmp1: |
| movq -0x10(%rbp), %rax |
| movq 0x8(%rax), %rdi |
| movl %eax, -0x14(%rbp) |
| |
| Ltmp4: |
| cmpl $0x0, -0x14(%rbp) |
| Ltmp4_br: |
| je Ltmp0 |
| # CHECK2: je .Ltmp0 |
| # CHECK2-NEXT: count: 3 |
| |
| movl $0xa, -0x18(%rbp) |
| callq foo |
| ## Target is a binary-local call continuation |
| # PREAGG1: B #Lfoo_ret# #Ltmp3# 1 0 |
| # PREAGGT1: T #Lfoo_ret# #Ltmp3# #Ltmp3_br# 1 |
| # CHECK: callq foo |
| # CHECK-NEXT: count: 1 |
| |
| ## PLT call continuation fallthrough spanning the call |
| # PREAGG2: F #Ltmp1# #Ltmp3_br# 3 |
| # CHECK2: callq foo |
| # CHECK2-NEXT: count: 3 |
| |
| ## Target is a secondary entry point (unstripped) or a landing pad (stripped) |
| # PREAGG3: B X:0 #Ltmp3# 2 0 |
| # PREAGGT2: T X:0 #Ltmp3# #Ltmp3_br# 2 |
| # CHECK3: callq foo |
| # CHECK3-NEXT: count: 0 |
| |
| Ltmp3: |
| cmpl $0x0, -0x18(%rbp) |
| Ltmp3_br: |
| jmp Ltmp2 |
| |
| Ltmp2: |
| movl -0x18(%rbp), %eax |
| addl $-0x1, %eax |
| movl %eax, -0x18(%rbp) |
| jmp Ltmp3 |
| jmp Ltmp4 |
| jmp Ltmp1 |
| |
| Ltmp0: |
| xorl %eax, %eax |
| addq $0x20, %rsp |
| popq %rbp |
| retq |
| .Lfunc_end0: |
| .cfi_endproc |
| .size main, .-main |
| |
| .section .gcc_except_table,"a",@progbits |
| .p2align 2, 0x0 |
| GCC_except_table0: |
| .Lexception0: |
| .byte 255 # @LPStart Encoding = omit |
| .byte 255 # @TType Encoding = omit |
| .byte 1 # Call site Encoding = uleb128 |
| .uleb128 .Lcst_end0-.Lcst_begin0 |
| .Lcst_begin0: |
| .uleb128 .Lfunc_begin0-.Lfunc_begin0 # >> Call Site 1 << |
| .uleb128 .Lfunc_end0-.Lfunc_begin0 # Call between .Lfunc_begin0 and .Lfunc_end0 |
| .uleb128 Ltmp3-.Lfunc_begin0 # jumps to Ltmp3 |
| .byte 0 # has no landing pad |
| .byte 0 # On action: cleanup |
| .Lcst_end0: |
| .p2align 2, 0x0 |
| .hidden DW.ref.__gxx_personality_v0 |
| .weak DW.ref.__gxx_personality_v0 |
| .section .data.DW.ref.__gxx_personality_v0,"awG",@progbits,DW.ref.__gxx_personality_v0,comdat |
| .p2align 3, 0x0 |
| .type DW.ref.__gxx_personality_v0,@object |
