derek.holloway
7502bf64a4
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164 lines
4.9 KiB
ArmAsm
164 lines
4.9 KiB
ArmAsm
# REQUIRES: x86
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# RUN: rm -rf %t; split-file %s %t
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/foo1.s -o %t/foo1.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/foo2.s -o %t/foo2.o
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# RUN: %lld -dylib --icf=all -framework CoreFoundation %t/foo1.o %t/foo2.o -o %t/foo
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# RUN: llvm-objdump --no-print-imm-hex --macho --rebase --bind --syms -d %t/foo | FileCheck %s --check-prefixes=CHECK,LITERALS
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# RUN: %lld -dylib -framework CoreFoundation %t/foo1.o %t/foo2.o -o %t/foo
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# RUN: llvm-objdump --no-print-imm-hex --macho --rebase --bind --syms -d %t/foo | FileCheck %s --check-prefix=LITERALS
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# Check that string deduplication for symbol names is working
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# RUN: %lld -dylib -framework CoreFoundation %t/foo1.o %t/foo2.o -o %t/foo_no_dedup -no-deduplicate-symbol-strings
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# RUN: llvm-strings %t/foo | FileCheck %s --check-prefix=CHECK-DEDUP
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# RUN: llvm-strings %t/foo_no_dedup | FileCheck %s --check-prefix=CHECK-NO-DEDUP
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# CHECK-DEDUP: _named_cfstring
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# CHECK-DEDUP-NOT: _named_cfstring
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# CHECK-NO-DEDUP: _named_cfstring
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# CHECK-NO-DEDUP: _named_cfstring
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# CHECK-NO-DEDUP-NOT: _named_cfstring
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# CHECK: (__TEXT,__text) section
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# CHECK-NEXT: _foo1:
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# CHECK-NEXT: _foo2:
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# CHECK-NEXT: movq _named_cfstring(%rip), %rax
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# CHECK-NEXT: _foo1_utf16:
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# CHECK-NEXT: movq [[#]](%rip), %rax
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# CHECK-NEXT: _named_foo1:
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# CHECK-NEXT: _named_foo2:
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# CHECK-NEXT: movq _named_cfstring(%rip), %rax
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# CHECK-NEXT: _foo2_utf16:
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# CHECK-NEXT: movq [[#]](%rip), %rax
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# CHECK: SYMBOL TABLE:
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# CHECK-DAG: [[#%.16x,FOO:]] g F __TEXT,__text _foo1
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# CHECK-DAG: [[#FOO]] g F __TEXT,__text _foo2
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## Make sure we don't emit redundant bind / rebase opcodes for folded sections.
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# LITERALS: Rebase table:
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# LITERALS-NEXT: segment section address type
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# LITERALS-NEXT: __DATA_CONST __cfstring {{.*}} pointer
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# LITERALS-NEXT: __DATA_CONST __cfstring {{.*}} pointer
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# LITERALS-NEXT: __DATA_CONST __cfstring {{.*}} pointer
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# LITERALS-EMPTY:
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# LITERALS-NEXT: Bind table:
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# LITERALS-NEXT: segment section address type addend dylib symbol
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# LITERALS-NEXT: __DATA_CONST __cfstring {{.*}} pointer 0 CoreFoundation ___CFConstantStringClassReference
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# LITERALS-NEXT: __DATA_CONST __cfstring {{.*}} pointer 0 CoreFoundation ___CFConstantStringClassReference
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# LITERALS-NEXT: __DATA_CONST __cfstring {{.*}} pointer 0 CoreFoundation ___CFConstantStringClassReference
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# LITERALS-EMPTY:
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#--- foo1.s
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.cstring
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L_.str.0:
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.asciz "bar"
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## This string is at a different offset than the corresponding "foo" string in
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## foo2.s. Make sure that we treat references to either string as equivalent.
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L_.str:
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.asciz "foo"
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.section __DATA,__cfstring
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.p2align 3
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L__unnamed_cfstring_:
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.quad ___CFConstantStringClassReference
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.long 1992 ## utf-8
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.space 4
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.quad L_.str
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.quad 3 ## strlen
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_named_cfstring:
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.quad ___CFConstantStringClassReference
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.long 1992 ## utf-8
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.space 4
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.quad L_.str
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.quad 3 ## strlen
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.section __TEXT,__ustring
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l_.ustr:
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.short 102 ## f
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.short 111 ## o
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.short 0 ## \0
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.short 111 ## o
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.short 0 ## \0
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## FIXME: We should be able to deduplicate UTF-16 CFStrings too.
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## Note that this string contains a null byte in the middle -- any dedup code
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## we add should take care to handle this correctly.
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## Technically, UTF-8 should support encoding null bytes too, but since we
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## atomize the __cstring section at every null byte, this isn't supported. ld64
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## doesn't support it either, and clang seems to always emit a UTF-16 CFString
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## if it needs to contain a null, so I think we're good here.
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.section __DATA,__cfstring
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.p2align 3
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L__unnamed_cfstring_.2:
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.quad ___CFConstantStringClassReference
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.long 2000 ## utf-16
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.space 4
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.quad l_.ustr
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.quad 4 ## strlen
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.text
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.globl _foo1, _foo1_utf16, _named_foo1
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_foo1:
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movq L__unnamed_cfstring_(%rip), %rax
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_foo1_utf16:
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movq L__unnamed_cfstring_.2(%rip), %rax
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_named_foo1:
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movq _named_cfstring(%rip), %rax
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.subsections_via_symbols
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#--- foo2.s
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.cstring
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L_.str:
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.asciz "foo"
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.section __DATA,__cfstring
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.p2align 3
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L__unnamed_cfstring_:
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.quad ___CFConstantStringClassReference
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.long 1992 ## utf-8
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.space 4
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.quad L_.str
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.quad 3 ## strlen
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_named_cfstring:
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.quad ___CFConstantStringClassReference
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.long 1992 ## utf-8
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.space 4
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.quad L_.str
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.quad 3 ## strlen
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.section __TEXT,__ustring
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.p2align 1
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l_.ustr:
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.short 102 ## f
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.short 111 ## o
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.short 0 ## \0
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.short 111 ## o
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.short 0 ## \0
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.section __DATA,__cfstring
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.p2align 3
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L__unnamed_cfstring_.2:
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.quad ___CFConstantStringClassReference
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.long 2000 ## utf-16
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.space 4
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.quad l_.ustr
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.quad 4 ## strlen
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.text
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.globl _foo2, _foo2_utf16, _named_foo2
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_foo2:
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movq L__unnamed_cfstring_(%rip), %rax
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_foo2_utf16:
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movq L__unnamed_cfstring_.2(%rip), %rax
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_named_foo2:
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movq _named_cfstring(%rip), %rax
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.subsections_via_symbols
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