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1; REQUIRES: aarch642 3; RUN: rm -rf %t; mkdir %t4 5; RUN: llc -filetype=obj %s -O3 -o %t/icf-obj.o -enable-machine-outliner=never -mtriple arm64-apple-macos -addrsig6; RUN: %lld -arch arm64 -lSystem --icf=safe -dylib -o %t/icf-safe.dylib %t/icf-obj.o7; RUN: %lld -arch arm64 -lSystem --icf=all -dylib -o %t/icf-all.dylib %t/icf-obj.o8; RUN: llvm-objdump %t/icf-safe.dylib -d -h --macho | FileCheck %s --check-prefixes=ICFSAFE,CHECK9; RUN: llvm-objdump %t/icf-all.dylib -d -h --macho | FileCheck %s --check-prefixes=ICFALL,CHECK10 11; RUN: llvm-as %s -o %t/icf-bitcode.o12; RUN: %lld -arch arm64 -lSystem --icf=safe -dylib -o %t/icf-safe-bitcode.dylib %t/icf-bitcode.o13; RUN: %lld -arch arm64 -lSystem --icf=all -dylib -o %t/icf-all-bitcode.dylib %t/icf-bitcode.o14; RUN: llvm-objdump %t/icf-safe-bitcode.dylib -d -h --macho | FileCheck %s --check-prefixes=ICFSAFE,CHECK15; RUN: llvm-objdump %t/icf-all-bitcode.dylib -d -h --macho | FileCheck %s --check-prefixes=ICFALL,CHECK16 17;; Regression test: if we tried writing __llvm_addrsig to the output, -fixup_chains would fail with a "fixups overlap"18;; error, as the relocations (which reference the address-taken functions) are all at offset 0.19; RUN: %lld -arch arm64 -lSystem --icf=safe -fixup_chains -dylib -o %t/icf-safe-chained.dylib %t/icf-obj.o20; RUN: llvm-objdump %t/icf-safe-chained.dylib -d -h --macho | FileCheck %s --check-prefixes=ICFSAFE,CHECK21 22; ICFSAFE-LABEL: _callAllFunctions23; ICFSAFE: bl _func0224; ICFSAFE-NEXT: bl _func0225; ICFSAFE-NEXT: bl _func03_takeaddr26 27; ICFALL-LABEL: _callAllFunctions28; ICFALL: bl _func03_takeaddr29; ICFALL-NEXT: bl _func03_takeaddr30; ICFALL-NEXT: bl _func03_takeaddr31 32; CHECK-LABEL: Sections:33; CHECK-NOT: __llvm_addrsig34 35target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"36target triple = "arm64-apple-macos11.0"37 38@result = global i32 0, align 439 40define void @func01() local_unnamed_addr noinline {41entry:42 %0 = load volatile i32, ptr @result, align 443 %add = add nsw i32 %0, 144 store volatile i32 %add, ptr @result, align 445 ret void46}47 48define void @func02() local_unnamed_addr noinline {49entry:50 %0 = load volatile i32, ptr @result, align 451 %add = add nsw i32 %0, 152 store volatile i32 %add, ptr @result, align 453 ret void54}55 56define void @func03_takeaddr() noinline {57entry:58 %0 = load volatile i32, ptr @result, align 459 %add = add nsw i32 %0, 160 store volatile i32 %add, ptr @result, align 461 ret void62}63 64define void @callAllFunctions() local_unnamed_addr {65entry:66 tail call void @func01()67 tail call void @func02()68 tail call void @func03_takeaddr()69 %0 = load volatile i32, ptr @result, align 470 %add = add nsw i32 %0, ptrtoint (ptr @func03_takeaddr to i32)71 store volatile i32 %add, ptr @result, align 472 ret void73}74