| # REQUIRES: x86, aarch64 |
| |
| # RUN: rm -rf %t; split-file %s %t |
| # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-macos11.0 %t/strong.s -o %t/strong_x86_64.o |
| # RUN: llvm-mc -filetype=obj -triple=x86_64-apple-macos11.0 %t/weak.s -o %t/weak_x86_64.o |
| # RUN: %lld -dylib -dead_strip %t/strong_x86_64.o %t/weak_x86_64.o -o %t/libstrongweak_x86_64.dylib |
| # RUN: llvm-dwarfdump --eh-frame %t/libstrongweak_x86_64.dylib | FileCheck --check-prefixes CHECK,X86_64 %s |
| # RUN: %lld -dylib -dead_strip %t/weak_x86_64.o %t/strong_x86_64.o -o %t/libweakstrong_x86_64.dylib |
| # RUN: llvm-dwarfdump --eh-frame %t/libweakstrong_x86_64.dylib | FileCheck --check-prefixes CHECK,X86_64 %s |
| |
| # RUN: llvm-mc -filetype=obj -triple=arm64-apple-macos11.0 %t/strong.s -o %t/strong_arm64.o |
| # RUN: llvm-mc -filetype=obj -triple=arm64-apple-macos11.0 %t/weak.s -o %t/weak_arm64.o |
| # RUN: %lld -arch arm64 -dylib -dead_strip %t/strong_arm64.o %t/weak_arm64.o -o %t/libstrongweak_arm64.dylib |
| # RUN: llvm-dwarfdump --eh-frame %t/libstrongweak_arm64.dylib | FileCheck --check-prefixes CHECK,ARM64 %s |
| # RUN: %lld -arch arm64 -dylib -dead_strip %t/weak_arm64.o %t/strong_arm64.o -o %t/libweakstrong_arm64.dylib |
| # RUN: llvm-dwarfdump --eh-frame %t/libweakstrong_arm64.dylib | FileCheck --check-prefixes CHECK,ARM64 %s |
| |
| ## Verify that unneeded FDEs (and their CIEs) are dead-stripped even if they |
| ## point to a live symbol (e.g. because we had multiple weak definitions). |
| |
| # CHECK: .eh_frame contents: |
| # X86_64: 00000000 00000014 00000000 CIE |
| # X86_64: 00000018 0000001c 0000001c FDE cie=00000000 |
| # ARM64: 00000000 00000010 00000000 CIE |
| # ARM64: 00000014 00000018 00000018 FDE cie=00000000 |
| # CHECK-NOT: CIE |
| # CHECK-NOT: FDE |
| |
| #--- strong.s |
| .globl _fun |
| _fun: |
| .cfi_startproc |
| ## cfi_escape cannot be encoded in compact unwind |
| .cfi_escape 0 |
| ret |
| .cfi_endproc |
| |
| #--- weak.s |
| .globl _fun |
| .weak_definition _fun |
| _fun: |
| .cfi_startproc |
| ## cfi_escape cannot be encoded in compact unwind |
| .cfi_escape 0 |
| ret |
| .cfi_endproc |