c9cdc502f3
the spec required by std::sort and friends. Ordering things this way also dramatically simplifies the code as short-circuit ensures we can skip all of the negative tests. I've left one FIXME where we're establishing a fairly arbitrary ordering. Previously, the function compared all types as equal except for the ones it explicitly handled, but it didn't delegate correctly to the atomflags when doing so, and so it would fail to be a SWO. The two possible fixes are to stop comparing the atom flags entirely, or to establish some arbitrary ordering of the types. Since it was pure luck which ordering of unequal types we ended up with previously (the caller was std::sort, not std::stable_sort) I chose to make the ordering explicit and guaranteed. This seems like the best conservative approach as I suspect we would want to switch to stable_sort otherwise in order to have deterministic output. Differential Revision: http://reviews.llvm.org/D8266 llvm-svn: 231968
100 lines
2.9 KiB
Plaintext
100 lines
2.9 KiB
Plaintext
# This test checks emission for program header for ELF binaries
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RUN: lld -flavor gnu -target i386-linux -o %t1 -e main %p/Inputs/phdr.i386 \
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RUN: && llvm-readobj -program-headers %t1 | FileCheck -check-prefix=I386 %s
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RUN: lld -flavor gnu -target x86_64-linux -o %t1 -e _start %p/Inputs/relocs.x86-64 -static \
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RUN: && llvm-objdump -p %t1 | FileCheck %s -check-prefix=X86_64
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I386: ProgramHeaders [
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I386-NEXT: ProgramHeader {
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I386-NEXT: Type: PT_PHDR (0x6)
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I386-NEXT: Offset: 0x34
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I386-NEXT: VirtualAddress: 0x34
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I386-NEXT: PhysicalAddress: 0x34
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I386-NEXT: FileSize: 224
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I386-NEXT: MemSize: 224
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I386-NEXT: Flags [ (0x5)
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I386-NEXT: PF_R (0x4)
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I386-NEXT: PF_X (0x1)
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I386-NEXT: ]
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I386-NEXT: Alignment: 8
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I386-NEXT: }
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I386-NEXT: ProgramHeader {
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I386-NEXT: Type: PT_INTERP (0x3)
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I386-NEXT: Offset: 0x114
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I386-NEXT: VirtualAddress: 0x114
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I386-NEXT: PhysicalAddress: 0x114
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I386-NEXT: FileSize: 28
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I386-NEXT: MemSize: 28
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I386-NEXT: Flags [ (0x4)
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I386-NEXT: PF_R (0x4)
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I386-NEXT: ]
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I386-NEXT: Alignment: 1
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I386-NEXT: }
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I386-NEXT: ProgramHeader {
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I386-NEXT: Type: PT_LOAD (0x1)
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I386-NEXT: Offset: 0x0
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I386-NEXT: VirtualAddress: 0x0
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I386-NEXT: PhysicalAddress: 0x0
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I386-NEXT: FileSize: 556
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I386-NEXT: MemSize: 556
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I386-NEXT: Flags [ (0x5)
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I386-NEXT: PF_R (0x4)
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I386-NEXT: PF_X (0x1)
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I386-NEXT: ]
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I386-NEXT: Alignment: 4096
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I386-NEXT: }
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I386-NEXT: ProgramHeader {
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I386-NEXT: Type: PT_LOAD (0x1)
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I386-NEXT: Offset: 0x1000
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I386-NEXT: VirtualAddress: 0x1000
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I386-NEXT: PhysicalAddress: 0x1000
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I386-NEXT: FileSize: 260
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I386-NEXT: MemSize: 260
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I386-NEXT: Flags [ (0x6)
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I386-NEXT: PF_R (0x4)
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I386-NEXT: PF_W (0x2)
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I386-NEXT: ]
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I386-NEXT: Alignment: 4096
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I386-NEXT: }
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I386-NEXT: ProgramHeader {
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I386-NEXT: Type: PT_LOAD (0x1)
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I386-NEXT: Offset: 0x4000
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I386-NEXT: VirtualAddress: 0x4000
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I386-NEXT: PhysicalAddress: 0x4000
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I386-NEXT: FileSize: 4
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I386-NEXT: MemSize: 8
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I386-NEXT: Flags [ (0x6)
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I386-NEXT: PF_R (0x4)
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I386-NEXT: PF_W (0x2)
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I386-NEXT: ]
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I386-NEXT: Alignment: 16384
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I386-NEXT: }
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I386-NEXT: ProgramHeader {
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I386-NEXT: Type: PT_DYNAMIC (0x2)
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I386-NEXT: Offset: 0x1FC
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I386-NEXT: VirtualAddress: 0x1FC
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I386-NEXT: PhysicalAddress: 0x1FC
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I386-NEXT: FileSize: 48
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I386-NEXT: MemSize: 48
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I386-NEXT: Flags [ (0x4)
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I386-NEXT: PF_R (0x4)
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I386-NEXT: ]
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I386-NEXT: Alignment: 4
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I386-NEXT: }
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I386-NEXT: ProgramHeader {
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I386-NEXT: Type: PT_GNU_EH_FRAME (0x6474E550)
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I386-NEXT: Offset: 0x1F4
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I386-NEXT: VirtualAddress: 0x1F4
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I386-NEXT: PhysicalAddress: 0x1F4
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I386-NEXT: FileSize: 8
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I386-NEXT: MemSize: 8
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I386-NEXT: Flags [ (0x4)
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I386-NEXT: PF_R (0x4)
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I386-NEXT: ]
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I386-NEXT: Alignment: 4
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I386-NEXT: }
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X86_64: LOAD off 0x0000000000000000
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X86_64: LOAD off 0x0000000000001000
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