derek.holloway
7502bf64a4
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59 lines
1.9 KiB
ArmAsm
59 lines
1.9 KiB
ArmAsm
# REQUIRES: mips
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## Check that we ignore R_MIPS_JALR relocations agains non-function symbols.
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## Older versions of clang were erroneously generating them for function pointers
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## loaded from any table (not just the GOT) as well as against TLS function
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## pointers (when using the local-dynamic model), so we need to ignore these
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## relocations to avoid generating binaries that crash when executed.
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# RUN: llvm-mc -filetype=obj -triple=mips64-unknown-linux %s -o %t.o
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## Link in another object file with a .bss as a regression test:
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## Previously LLD asserted when skipping over .bss sections when determining the
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## location for a warning/error message. By adding another file with a .bss
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## section before the actual %t.o we can reproduce this case.
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# RUN: llvm-mc -filetype=obj -triple=mips64-unknown-linux %S/Inputs/common.s -o %t-common.o
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# RUN: ld.lld -shared %t-common.o %t.o -o %t.so 2>&1 | FileCheck %s -check-prefix WARNING-MESSAGE
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# RUN: llvm-objdump --no-show-raw-insn --no-leading-addr -d %t.so | FileCheck %s
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.set noreorder
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test:
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.reloc .Ltmp1, R_MIPS_JALR, tls_obj
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.Ltmp1:
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jr $t9
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nop
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# WARNING-MESSAGE: warning: {{.+}}.tmp.o:(.text+0x0): found R_MIPS_JALR relocation against non-function symbol tls_obj. This is invalid and most likely a compiler bug.
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.reloc .Ltmp2, R_MIPS_JALR, reg_obj
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.Ltmp2:
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jr $t9
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nop
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# WARNING-MESSAGE: warning: {{.+}}.tmp.o:(.text+0x8): found R_MIPS_JALR relocation against non-function symbol reg_obj. This is invalid and most likely a compiler bug.
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.reloc .Ltmp3, R_MIPS_JALR, untyped
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.Ltmp3:
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jr $t9
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nop
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## However, we do perform the optimization for untyped symbols:
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untyped:
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nop
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.type tls_obj,@object
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.section .tbss,"awT",@nobits
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tls_obj:
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.word 0
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.type reg_obj,@object
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.data
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reg_obj:
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.word 0
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# CHECK-LABEL: Disassembly of section .text:
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# CHECK-EMPTY:
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# CHECK-NEXT: <test>:
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# CHECK-NEXT: jr $25
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# CHECK-NEXT: nop
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# CHECK-NEXT: jr $25
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# CHECK-NEXT: nop
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# CHECK-NEXT: b {{.*}} <untyped>
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# CHECK-NEXT: nop
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