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d4257740dd
This CL changes the asm syntax for section flags, making them more like ELF (previously "passive" was the only option). Now we also allow "G" to designate COMDAT group sections. In these sections we set the appropriate comdat flag on function symbols, and also avoid auto-creating a new section for them. This also adds asm-based tests for the changes D92691 to go along with the direct-to-object tests. Differential Revision: https://reviews.llvm.org/D92952 This is a reland of rG4564553b8d8a with a fix to the lit pipeline in llvm/test/MC/WebAssembly/comdat.ll
51 lines
1.7 KiB
ArmAsm
51 lines
1.7 KiB
ArmAsm
# RUN: llvm-mc -triple=wasm32 -filetype=obj %s -o - | obj2yaml | FileCheck %s
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.section .text.foo,"G",@,abc123,comdat
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.globl foo
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.type foo,@function
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foo:
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.functype foo () -> ()
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return
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end_function
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.globl bar
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bar:
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.functype bar () -> ()
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return
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end_function
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.section .debug_foo,"G",@,abc123,comdat
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.int32 42
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.section .debug_foo,"G",@,duplicate,comdat
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.int64 234
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# Check that there are 2 identically-named custom sections, with the desired
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# contents
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# CHECK: - Type: CUSTOM
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# CHECK-NEXT: Name: .debug_foo
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# CHECK-NEXT: Payload: 2A000000
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# CHECK-NEXT: - Type: CUSTOM
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# CHECK-NEXT: Name: .debug_foo
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# CHECK-NEXT: Payload: EA00000000000000
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# And check that they are in 2 different comdat groups
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# CHECK-NEXT:- Type: CUSTOM
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# CHECK-NEXT: Name: linking
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# CHECK-NEXT: Version: 2
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# CHECK: Comdats:
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# CHECK-NEXT: - Name: abc123
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# CHECK-NEXT: Entries:
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# CHECK-NEXT: - Kind: FUNCTION
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# CHECK-NEXT: Index: 0
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# If the user forgets to create a new section for a function, one is created for
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# them by the assembler. Check that it is also in the same group.
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# CHECK-NEXT: - Kind: FUNCTION
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# CHECK-NEXT: Index: 1
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# CHECK-NEXT: - Kind: SECTION
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# CHECK-NEXT: Index: 4
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# CHECK-NEXT: - Name: duplicate
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# CHECK-NEXT: Entries:
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# CHECK-NEXT: - Kind: SECTION
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# CHECK-NEXT: Index: 5
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