derek.holloway
7502bf64a4
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74 lines
2.7 KiB
LLVM
74 lines
2.7 KiB
LLVM
; REQUIRES: aarch64
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; RUN: rm -rf %t; mkdir %t
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; RUN: llc -filetype=obj %s -O3 -o %t/icf-obj.o -enable-machine-outliner=never -mtriple arm64-apple-macos -addrsig
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; RUN: %lld -arch arm64 -lSystem --icf=safe -dylib -o %t/icf-safe.dylib %t/icf-obj.o
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; RUN: %lld -arch arm64 -lSystem --icf=all -dylib -o %t/icf-all.dylib %t/icf-obj.o
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; RUN: llvm-objdump %t/icf-safe.dylib -d -h --macho | FileCheck %s --check-prefixes=ICFSAFE,CHECK
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; RUN: llvm-objdump %t/icf-all.dylib -d -h --macho | FileCheck %s --check-prefixes=ICFALL,CHECK
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; RUN: llvm-as %s -o %t/icf-bitcode.o
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; RUN: %lld -arch arm64 -lSystem --icf=safe -dylib -o %t/icf-safe-bitcode.dylib %t/icf-bitcode.o
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; RUN: %lld -arch arm64 -lSystem --icf=all -dylib -o %t/icf-all-bitcode.dylib %t/icf-bitcode.o
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; RUN: llvm-objdump %t/icf-safe-bitcode.dylib -d -h --macho | FileCheck %s --check-prefixes=ICFSAFE,CHECK
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; RUN: llvm-objdump %t/icf-all-bitcode.dylib -d -h --macho | FileCheck %s --check-prefixes=ICFALL,CHECK
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;; Regression test: if we tried writing __llvm_addrsig to the output, -fixup_chains would fail with a "fixups overlap"
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;; error, as the relocations (which reference the address-taken functions) are all at offset 0.
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; RUN: %lld -arch arm64 -lSystem --icf=safe -fixup_chains -dylib -o %t/icf-safe-chained.dylib %t/icf-obj.o
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; RUN: llvm-objdump %t/icf-safe-chained.dylib -d -h --macho | FileCheck %s --check-prefixes=ICFSAFE,CHECK
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; ICFSAFE-LABEL: _callAllFunctions
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; ICFSAFE: bl _func02
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; ICFSAFE-NEXT: bl _func02
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; ICFSAFE-NEXT: bl _func03_takeaddr
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; ICFALL-LABEL: _callAllFunctions
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; ICFALL: bl _func03_takeaddr
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; ICFALL-NEXT: bl _func03_takeaddr
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; ICFALL-NEXT: bl _func03_takeaddr
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; CHECK-LABEL: Sections:
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; CHECK-NOT: __llvm_addrsig
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target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
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target triple = "arm64-apple-macos11.0"
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@result = global i32 0, align 4
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define void @func01() local_unnamed_addr noinline {
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entry:
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%0 = load volatile i32, ptr @result, align 4
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%add = add nsw i32 %0, 1
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store volatile i32 %add, ptr @result, align 4
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ret void
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}
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define void @func02() local_unnamed_addr noinline {
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entry:
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%0 = load volatile i32, ptr @result, align 4
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%add = add nsw i32 %0, 1
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store volatile i32 %add, ptr @result, align 4
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ret void
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}
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define void @func03_takeaddr() noinline {
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entry:
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%0 = load volatile i32, ptr @result, align 4
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%add = add nsw i32 %0, 1
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store volatile i32 %add, ptr @result, align 4
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ret void
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}
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define void @callAllFunctions() local_unnamed_addr {
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entry:
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tail call void @func01()
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tail call void @func02()
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tail call void @func03_takeaddr()
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%0 = load volatile i32, ptr @result, align 4
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%add = add nsw i32 %0, ptrtoint (ptr @func03_takeaddr to i32)
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store volatile i32 %add, ptr @result, align 4
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ret void
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}
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