d054c7ee2e
See https://lists.llvm.org/pipermail/llvm-dev/2020-July/143373.html "[llvm-dev] Multiple documents in one test file" for some discussions. `extract part filename` splits the input file into multiple parts separated by regex `^(.|//)--- ` and extract the specified part to stdout or the output file (if specified). Use case A (organizing input of different formats (e.g. linker script+assembly) in one file). ``` // RUN: extract lds %s -o %t.lds // RUN: extract asm %s -o %t.s // RUN: llvm-mc %t.s -o %t.o // RUN: ld.lld -T %t.lds %t.o -o %t This is sometimes better than the %S/Inputs/ approach because the user can see the auxiliary files immediately and don't have to open another file. ``` Use case B (for utilities which don't have built-in input splitting feature): ``` // RUN: extract case1 %s | llc | FileCheck %s --check-prefix=CASE1 // RUN: extract case2 %s | llc | FileCheck %s --check-prefix=CASE2 Combing tests prudently can improve readability. This is sometimes better than having multiple test files. ``` Since this is a new utility, there is no git history concerns for UpperCase variable names. I use lowerCase variable names like mlir/lld. Reviewed By: jhenderson Differential Revision: https://reviews.llvm.org/D83834
32 lines
1.0 KiB
ArmAsm
32 lines
1.0 KiB
ArmAsm
# REQUIRES: x86
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# RUN: extract asm %s -o %t.s && extract lds %s -o %t.lds
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %t.s -o %t.o
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# RUN: ld.lld -o %t --script %t.lds %t.o
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# RUN: llvm-readelf -S -l %t | FileCheck %s
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# CHECK: Name Type Address Off Size
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# CHECK: .data_noload_a NOBITS 0000000000000000 [[OFF:[0-9a-f]+]] 001000
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# CHECK-NEXT: .data_noload_b NOBITS 0000000000010000 [[OFF]] 001000
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# CHECK-NEXT: .no_input_sec_noload NOBITS 0000000000011000 [[OFF]] 000001
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# CHECK: Type Offset VirtAddr PhysAddr
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# CHECK-NEXT: LOAD 0x001000 0x0000000000020000 0x0000000000020000
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#--- asm
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.section .text,"ax",@progbits
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nop
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.section .data_noload_a,"aw",@progbits
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.zero 4096
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.section .data_noload_b,"aw",@progbits
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.zero 4096
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#--- lds
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SECTIONS {
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.data_noload_a (NOLOAD) : { *(.data_noload_a) }
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.data_noload_b (0x10000) (NOLOAD) : { *(.data_noload_b) }
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.no_input_sec_noload (NOLOAD) : { . += 1; }
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.text (0x20000) : { *(.text) }
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}
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