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COFF normally doesn't allow us to describe the alignment of COMMON symbols. It turns out that most linkers use the symbol size as a hint as to how aligned the symbol should be. However the BFD folks have added a .drectve command, which we now support as of r219229, that allows us to specify the alignment precisely. With this in mind, stop rounding sizes up. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219281 91177308-0d34-0410-b5e6-96231b3b80d8
58 lines
1.3 KiB
ArmAsm
58 lines
1.3 KiB
ArmAsm
# RUN: llvm-mc -triple i686-windows-gnu -filetype obj -o - %s \
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# RUN: | llvm-readobj -coff-directives -symbols | FileCheck %s
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# NOTE: this test checks multiple things:
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# - that -aligncomm is not emitted for 1-byte alignment
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# - that -aligncomm is emitted for the various alignments (greater than 1)
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# - that the alignment is represented as a log_2 of the alignment
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# - that the section switching occurs correctly
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# - that functions after the switch also are emitted into the correct section
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.text
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.def _a
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.scl 3
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.type 32
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.endef
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_a:
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ret
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.data
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.comm _s_1,4,0 # @s_1
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.comm _s_2,4,1 # @s_2
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.comm _s_4,4,2 # @s_3
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.comm _s_8,4,3 # @s_4
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.comm _small_but_overaligned,1,3 # @s_4
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.text
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.def _b
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.scl 3
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.type 32
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.endef
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_b:
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ret
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# CHECK-NOT: -aligncomm:"_s_1",0
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# CHECK: Symbols [
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# CHECK: Symbol {
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# CHECK: Name: _a
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# CHECK: Section: .text (1)
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# CHECK: }
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# CHECK: Symbol {
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# CHECK: Name: _small_but_overaligned
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# CHECK-NEXT:Value: 1
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# CHECK-NEXT:Section: IMAGE_SYM_UNDEFINED (0)
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# CHECK: }
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# CHECK: Symbol {
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# CHECK: Name: _b
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# CHECK: Section: .text (1)
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# CHECK: }
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# CHECK: ]
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# CHECK: Directive(s): -aligncomm:"_s_2",1 -aligncomm:"_s_4",2 -aligncomm:"_s_8",3 -aligncomm:"_small_but_overaligned",3
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