forked from OSchip/llvm-project
38 lines
952 B
ArmAsm
38 lines
952 B
ArmAsm
# REQUIRES: x86
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## basicblock-sections tests.
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## This simple test checks if redundant direct jumps are converted to
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## implicit fallthrus when PC32 reloc is present. The jcc's must be converted
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## to their inverted opcode, for instance jne to je and jmp must be deleted.
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
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# RUN: llvm-objdump -dr %t.o| FileCheck %s --check-prefix=RELOC
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# RUN: ld.lld --optimize-bb-jumps %t.o -o %t.out
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# RUN: llvm-objdump -d %t.out| FileCheck %s
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# RELOC: jmp
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# RELOC-NEXT: R_X86_64_PC32
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# CHECK: <foo>:
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# CHECK-NEXT: nopl (%rax)
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# CHECK-NEXT: jne 0x{{[[:xdigit:]]+}} <r.BB.foo>
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# CHECK-NOT: jmp
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.section .text,"ax",@progbits
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.type foo,@function
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foo:
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nopl (%rax)
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je a.BB.foo
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# Encode a jmp r.BB.foo insn using a PC32 reloc
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.byte 0xe9
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.long r.BB.foo - . - 4
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# CHECK: <a.BB.foo>:
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# CHECK-NEXT: nopl (%rax)
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.section .text,"ax",@progbits,unique,3
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a.BB.foo:
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nopl (%rax)
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r.BB.foo:
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ret
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